Bump go.opentelemetry.io/otel/trace from 1.15.1 to 1.16.0

Bumps [go.opentelemetry.io/otel/trace](https://github.com/open-telemetry/opentelemetry-go) from 1.15.1 to 1.16.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-go/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-go/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-telemetry/opentelemetry-go/compare/v1.15.1...v1.16.0)

---
updated-dependencies:
- dependency-name: go.opentelemetry.io/otel/trace
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -72,7 +72,7 @@ require (
 	github.com/shamaton/msgpack/v2 v2.1.1
 	github.com/sirupsen/logrus v1.9.0
 	github.com/spf13/cobra v1.7.0
-	github.com/stretchr/testify v1.8.2
+	github.com/stretchr/testify v1.8.3
 	github.com/test-go/testify v1.1.4
 	github.com/thejerf/suture/v4 v4.0.2
 	github.com/tus/tusd v1.10.1
@@ -81,11 +81,11 @@ require (
 	go-micro.dev/v4 v4.9.0
 	go.etcd.io/bbolt v1.3.7
 	go.opentelemetry.io/contrib/zpages v0.41.1
-	go.opentelemetry.io/otel v1.15.1
+	go.opentelemetry.io/otel v1.16.0
 	go.opentelemetry.io/otel/exporters/jaeger v1.15.1
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.15.1
 	go.opentelemetry.io/otel/sdk v1.15.1
-	go.opentelemetry.io/otel/trace v1.15.1
+	go.opentelemetry.io/otel/trace v1.16.0
 	golang.org/x/crypto v0.9.0
 	golang.org/x/exp v0.0.0-20221026004748-78e5e7837ae6
 	golang.org/x/image v0.6.0
@@ -310,6 +310,7 @@ require (
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.36.4 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.15.1 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.15.1 // indirect
+	go.opentelemetry.io/otel/metric v1.16.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
 	go.uber.org/atomic v1.10.0 // indirect
 	go.uber.org/multierr v1.8.0 // indirect

go.sum

@@ -1576,8 +1576,8 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.7.2/go.mod h1:R6va5+xMeoiuVRoj+gSkQ7d3FALtqAAGI1FQKckRals=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
+github.com/stretchr/testify v1.8.3 h1:RP3t2pwF7cMEbC1dqtB6poj3niw/9gnV4Cjg5oW5gtY=
-github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/stretchr/testify v1.8.3/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stvp/go-udp-testing v0.0.0-20201019212854-469649b16807/go.mod h1:7jxmlfBCDBXRzr0eAQJ48XC1hBu1np4CS5+cHEYfwpc=
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/tchap/go-patricia/v2 v2.3.1 h1:6rQp39lgIYZ+MHmdEq4xzuk1t7OdC35z/xm0BGhTkes=
@@ -1677,8 +1677,8 @@ go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.3
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.36.4/go.mod h1:05eWWy6ZWzmpeImD3UowLTB3VjDMU1yxQ+ENuVWDM3c=
 go.opentelemetry.io/contrib/zpages v0.41.1 h1:FReY8OWFNtYm4mWleTRxTUyD3r02uGcwS6ZeElahs00=
 go.opentelemetry.io/contrib/zpages v0.41.1/go.mod h1:C3iy146ccMyv1+gEaxVDDHuoT7yXAKKmbg+twudDpeg=
-go.opentelemetry.io/otel v1.15.1 h1:3Iwq3lfRByPaws0f6bU3naAqOR1n5IeDWd9390kWHa8=
+go.opentelemetry.io/otel v1.16.0 h1:Z7GVAX/UkAXPKsy94IU+i6thsQS4nb7LviLpnaNeW8s=
-go.opentelemetry.io/otel v1.15.1/go.mod h1:mHHGEHVDLal6YrKMmk9LqC4a3sF5g+fHfrttQIB1NTc=
+go.opentelemetry.io/otel v1.16.0/go.mod h1:vl0h9NUa1D5s1nv3A5vZOYWn8av4K8Ml6JDeHrT/bx4=
 go.opentelemetry.io/otel/exporters/jaeger v1.15.1 h1:x3SLvwli0OyAJapNcOIzf1xXBRBA+HD3elrMQmFfmXo=
 go.opentelemetry.io/otel/exporters/jaeger v1.15.1/go.mod h1:0Ck9b5oLL/bFZvfAEEqtrb1U0jZXjm5fWXMCOCG3vvM=
 go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.15.1 h1:XYDQtNzdb2T4uM1pku2m76eSMDJgqhJ+6KzkqgQBALc=
@@ -1687,10 +1687,12 @@ go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.15.1 h1:tyoeaUh8REKay72DVYs
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.15.1/go.mod h1:HUSnrjQQ19KX9ECjpQxufsF+3ioD3zISPMlauTPZu2g=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.15.1 h1:pIfoG5IAZFzp9EUlJzdSkpUwpaUAAnD+Ru1nBLTACIQ=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.15.1/go.mod h1:poNKBqF5+nR/6ke2oGTDjHfksrsHDOHXAl2g4+9ONsY=
+go.opentelemetry.io/otel/metric v1.16.0 h1:RbrpwVG1Hfv85LgnZ7+txXioPDoh6EdbZHo26Q3hqOo=
+go.opentelemetry.io/otel/metric v1.16.0/go.mod h1:QE47cpOmkwipPiefDwo2wDzwJrlfxxNYodqc4xnGCo4=
 go.opentelemetry.io/otel/sdk v1.15.1 h1:5FKR+skgpzvhPQHIEfcwMYjCBr14LWzs3uSqKiQzETI=
 go.opentelemetry.io/otel/sdk v1.15.1/go.mod h1:8rVtxQfrbmbHKfqzpQkT5EzZMcbMBwTzNAggbEAM0KA=
-go.opentelemetry.io/otel/trace v1.15.1 h1:uXLo6iHJEzDfrNC0L0mNjItIp06SyaBQxu5t3xMlngY=
+go.opentelemetry.io/otel/trace v1.16.0 h1:8JRpaObFoW0pxuVPapkgH8UhHQj+bJW8jJsCZEu5MQs=
-go.opentelemetry.io/otel/trace v1.15.1/go.mod h1:IWdQG/5N1x7f6YUlmdLeJvH9yxtuJAfc4VW5Agv9r/8=
+go.opentelemetry.io/otel/trace v1.16.0/go.mod h1:Yt9vYq1SdNz3xdjZZK7wcXv1qv2pwLkqr2QVwea0ef0=
 go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
 go.opentelemetry.io/proto/otlp v0.19.0 h1:IVN6GR+mhC4s5yfcTbmzHYODqvWAp3ZedA2SJPI1Nnw=
 go.opentelemetry.io/proto/otlp v0.19.0/go.mod h1:H7XAot3MsfNsj7EXtrA2q5xSNQ10UqI405h3+duxN4U=

vendor/github.com/stretchr/testify/assert/assertion_compare.go

@@ -352,9 +352,9 @@ func compare(obj1, obj2 interface{}, kind reflect.Kind) (CompareType, bool) {
 
 // Greater asserts that the first element is greater than the second
 //
-//    assert.Greater(t, 2, 1)
+//	assert.Greater(t, 2, 1)
-//    assert.Greater(t, float64(2), float64(1))
+//	assert.Greater(t, float64(2), float64(1))
-//    assert.Greater(t, "b", "a")
+//	assert.Greater(t, "b", "a")
 func Greater(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -364,10 +364,10 @@ func Greater(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface
 
 // GreaterOrEqual asserts that the first element is greater than or equal to the second
 //
-//    assert.GreaterOrEqual(t, 2, 1)
+//	assert.GreaterOrEqual(t, 2, 1)
-//    assert.GreaterOrEqual(t, 2, 2)
+//	assert.GreaterOrEqual(t, 2, 2)
-//    assert.GreaterOrEqual(t, "b", "a")
+//	assert.GreaterOrEqual(t, "b", "a")
-//    assert.GreaterOrEqual(t, "b", "b")
+//	assert.GreaterOrEqual(t, "b", "b")
 func GreaterOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -377,9 +377,9 @@ func GreaterOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...in
 
 // Less asserts that the first element is less than the second
 //
-//    assert.Less(t, 1, 2)
+//	assert.Less(t, 1, 2)
-//    assert.Less(t, float64(1), float64(2))
+//	assert.Less(t, float64(1), float64(2))
-//    assert.Less(t, "a", "b")
+//	assert.Less(t, "a", "b")
 func Less(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -389,10 +389,10 @@ func Less(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{})
 
 // LessOrEqual asserts that the first element is less than or equal to the second
 //
-//    assert.LessOrEqual(t, 1, 2)
+//	assert.LessOrEqual(t, 1, 2)
-//    assert.LessOrEqual(t, 2, 2)
+//	assert.LessOrEqual(t, 2, 2)
-//    assert.LessOrEqual(t, "a", "b")
+//	assert.LessOrEqual(t, "a", "b")
-//    assert.LessOrEqual(t, "b", "b")
+//	assert.LessOrEqual(t, "b", "b")
 func LessOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -402,8 +402,8 @@ func LessOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...inter
 
 // Positive asserts that the specified element is positive
 //
-//    assert.Positive(t, 1)
+//	assert.Positive(t, 1)
-//    assert.Positive(t, 1.23)
+//	assert.Positive(t, 1.23)
 func Positive(t TestingT, e interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -414,8 +414,8 @@ func Positive(t TestingT, e interface{}, msgAndArgs ...interface{}) bool {
 
 // Negative asserts that the specified element is negative
 //
-//    assert.Negative(t, -1)
+//	assert.Negative(t, -1)
-//    assert.Negative(t, -1.23)
+//	assert.Negative(t, -1.23)
 func Negative(t TestingT, e interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()

vendor/github.com/stretchr/testify/assert/assertion_format.go

@@ -22,9 +22,9 @@ func Conditionf(t TestingT, comp Comparison, msg string, args ...interface{}) bo
 // Containsf asserts that the specified string, list(array, slice...) or map contains the
 // specified substring or element.
 //
-//    assert.Containsf(t, "Hello World", "World", "error message %s", "formatted")
+//	assert.Containsf(t, "Hello World", "World", "error message %s", "formatted")
-//    assert.Containsf(t, ["Hello", "World"], "World", "error message %s", "formatted")
+//	assert.Containsf(t, ["Hello", "World"], "World", "error message %s", "formatted")
-//    assert.Containsf(t, {"Hello": "World"}, "Hello", "error message %s", "formatted")
+//	assert.Containsf(t, {"Hello": "World"}, "Hello", "error message %s", "formatted")
 func Containsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -56,7 +56,7 @@ func ElementsMatchf(t TestingT, listA interface{}, listB interface{}, msg string
 // Emptyf asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
 // a slice or a channel with len == 0.
 //
-//  assert.Emptyf(t, obj, "error message %s", "formatted")
+//	assert.Emptyf(t, obj, "error message %s", "formatted")
 func Emptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -66,7 +66,7 @@ func Emptyf(t TestingT, object interface{}, msg string, args ...interface{}) boo
 
 // Equalf asserts that two objects are equal.
 //
-//    assert.Equalf(t, 123, 123, "error message %s", "formatted")
+//	assert.Equalf(t, 123, 123, "error message %s", "formatted")
 //
 // Pointer variable equality is determined based on the equality of the
 // referenced values (as opposed to the memory addresses). Function equality
@@ -81,8 +81,8 @@ func Equalf(t TestingT, expected interface{}, actual interface{}, msg string, ar
 // EqualErrorf asserts that a function returned an error (i.e. not `nil`)
 // and that it is equal to the provided error.
 //
-//   actualObj, err := SomeFunction()
+//	actualObj, err := SomeFunction()
-//   assert.EqualErrorf(t, err,  expectedErrorString, "error message %s", "formatted")
+//	assert.EqualErrorf(t, err,  expectedErrorString, "error message %s", "formatted")
 func EqualErrorf(t TestingT, theError error, errString string, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -90,10 +90,27 @@ func EqualErrorf(t TestingT, theError error, errString string, msg string, args
 	return EqualError(t, theError, errString, append([]interface{}{msg}, args...)...)
 }
 
+// EqualExportedValuesf asserts that the types of two objects are equal and their public
+// fields are also equal. This is useful for comparing structs that have private fields
+// that could potentially differ.
+//
+//	 type S struct {
+//		Exported     	int
+//		notExported   	int
+//	 }
+//	 assert.EqualExportedValuesf(t, S{1, 2}, S{1, 3}, "error message %s", "formatted") => true
+//	 assert.EqualExportedValuesf(t, S{1, 2}, S{2, 3}, "error message %s", "formatted") => false
+func EqualExportedValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
+	if h, ok := t.(tHelper); ok {
+		h.Helper()
+	}
+	return EqualExportedValues(t, expected, actual, append([]interface{}{msg}, args...)...)
+}
+
 // EqualValuesf asserts that two objects are equal or convertable to the same types
 // and equal.
 //
-//    assert.EqualValuesf(t, uint32(123), int32(123), "error message %s", "formatted")
+//	assert.EqualValuesf(t, uint32(123), int32(123), "error message %s", "formatted")
 func EqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -103,10 +120,10 @@ func EqualValuesf(t TestingT, expected interface{}, actual interface{}, msg stri
 
 // Errorf asserts that a function returned an error (i.e. not `nil`).
 //
-//   actualObj, err := SomeFunction()
+//	  actualObj, err := SomeFunction()
-//   if assert.Errorf(t, err, "error message %s", "formatted") {
+//	  if assert.Errorf(t, err, "error message %s", "formatted") {
-// 	   assert.Equal(t, expectedErrorf, err)
+//		   assert.Equal(t, expectedErrorf, err)
-//   }
+//	  }
 func Errorf(t TestingT, err error, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -126,8 +143,8 @@ func ErrorAsf(t TestingT, err error, target interface{}, msg string, args ...int
 // ErrorContainsf asserts that a function returned an error (i.e. not `nil`)
 // and that the error contains the specified substring.
 //
-//   actualObj, err := SomeFunction()
+//	actualObj, err := SomeFunction()
-//   assert.ErrorContainsf(t, err,  expectedErrorSubString, "error message %s", "formatted")
+//	assert.ErrorContainsf(t, err,  expectedErrorSubString, "error message %s", "formatted")
 func ErrorContainsf(t TestingT, theError error, contains string, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -147,7 +164,7 @@ func ErrorIsf(t TestingT, err error, target error, msg string, args ...interface
 // Eventuallyf asserts that given condition will be met in waitFor time,
 // periodically checking target function each tick.
 //
-//    assert.Eventuallyf(t, func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")
+//	assert.Eventuallyf(t, func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")
 func Eventuallyf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -155,9 +172,34 @@ func Eventuallyf(t TestingT, condition func() bool, waitFor time.Duration, tick
 	return Eventually(t, condition, waitFor, tick, append([]interface{}{msg}, args...)...)
 }
 
+// EventuallyWithTf asserts that given condition will be met in waitFor time,
+// periodically checking target function each tick. In contrast to Eventually,
+// it supplies a CollectT to the condition function, so that the condition
+// function can use the CollectT to call other assertions.
+// The condition is considered "met" if no errors are raised in a tick.
+// The supplied CollectT collects all errors from one tick (if there are any).
+// If the condition is not met before waitFor, the collected errors of
+// the last tick are copied to t.
+//
+//	externalValue := false
+//	go func() {
+//		time.Sleep(8*time.Second)
+//		externalValue = true
+//	}()
+//	assert.EventuallyWithTf(t, func(c *assert.CollectT, "error message %s", "formatted") {
+//		// add assertions as needed; any assertion failure will fail the current tick
+//		assert.True(c, externalValue, "expected 'externalValue' to be true")
+//	}, 1*time.Second, 10*time.Second, "external state has not changed to 'true'; still false")
+func EventuallyWithTf(t TestingT, condition func(collect *CollectT), waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool {
+	if h, ok := t.(tHelper); ok {
+		h.Helper()
+	}
+	return EventuallyWithT(t, condition, waitFor, tick, append([]interface{}{msg}, args...)...)
+}
+
 // Exactlyf asserts that two objects are equal in value and type.
 //
-//    assert.Exactlyf(t, int32(123), int64(123), "error message %s", "formatted")
+//	assert.Exactlyf(t, int32(123), int64(123), "error message %s", "formatted")
 func Exactlyf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -183,7 +225,7 @@ func FailNowf(t TestingT, failureMessage string, msg string, args ...interface{}
 
 // Falsef asserts that the specified value is false.
 //
-//    assert.Falsef(t, myBool, "error message %s", "formatted")
+//	assert.Falsef(t, myBool, "error message %s", "formatted")
 func Falsef(t TestingT, value bool, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -202,9 +244,9 @@ func FileExistsf(t TestingT, path string, msg string, args ...interface{}) bool
 
 // Greaterf asserts that the first element is greater than the second
 //
-//    assert.Greaterf(t, 2, 1, "error message %s", "formatted")
+//	assert.Greaterf(t, 2, 1, "error message %s", "formatted")
-//    assert.Greaterf(t, float64(2), float64(1), "error message %s", "formatted")
+//	assert.Greaterf(t, float64(2), float64(1), "error message %s", "formatted")
-//    assert.Greaterf(t, "b", "a", "error message %s", "formatted")
+//	assert.Greaterf(t, "b", "a", "error message %s", "formatted")
 func Greaterf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -214,10 +256,10 @@ func Greaterf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...in
 
 // GreaterOrEqualf asserts that the first element is greater than or equal to the second
 //
-//    assert.GreaterOrEqualf(t, 2, 1, "error message %s", "formatted")
+//	assert.GreaterOrEqualf(t, 2, 1, "error message %s", "formatted")
-//    assert.GreaterOrEqualf(t, 2, 2, "error message %s", "formatted")
+//	assert.GreaterOrEqualf(t, 2, 2, "error message %s", "formatted")
-//    assert.GreaterOrEqualf(t, "b", "a", "error message %s", "formatted")
+//	assert.GreaterOrEqualf(t, "b", "a", "error message %s", "formatted")
-//    assert.GreaterOrEqualf(t, "b", "b", "error message %s", "formatted")
+//	assert.GreaterOrEqualf(t, "b", "b", "error message %s", "formatted")
 func GreaterOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -228,7 +270,7 @@ func GreaterOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, arg
 // HTTPBodyContainsf asserts that a specified handler returns a
 // body that contains a string.
 //
-//  assert.HTTPBodyContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//	assert.HTTPBodyContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
@@ -241,7 +283,7 @@ func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url
 // HTTPBodyNotContainsf asserts that a specified handler returns a
 // body that does not contain a string.
 //
-//  assert.HTTPBodyNotContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//	assert.HTTPBodyNotContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
@@ -253,7 +295,7 @@ func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, u
 
 // HTTPErrorf asserts that a specified handler returns an error status code.
 //
-//  assert.HTTPErrorf(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//	assert.HTTPErrorf(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPErrorf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
@@ -265,7 +307,7 @@ func HTTPErrorf(t TestingT, handler http.HandlerFunc, method string, url string,
 
 // HTTPRedirectf asserts that a specified handler returns a redirect status code.
 //
-//  assert.HTTPRedirectf(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//	assert.HTTPRedirectf(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPRedirectf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
@@ -277,7 +319,7 @@ func HTTPRedirectf(t TestingT, handler http.HandlerFunc, method string, url stri
 
 // HTTPStatusCodef asserts that a specified handler returns a specified status code.
 //
-//  assert.HTTPStatusCodef(t, myHandler, "GET", "/notImplemented", nil, 501, "error message %s", "formatted")
+//	assert.HTTPStatusCodef(t, myHandler, "GET", "/notImplemented", nil, 501, "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPStatusCodef(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, statuscode int, msg string, args ...interface{}) bool {
@@ -289,7 +331,7 @@ func HTTPStatusCodef(t TestingT, handler http.HandlerFunc, method string, url st
 
 // HTTPSuccessf asserts that a specified handler returns a success status code.
 //
-//  assert.HTTPSuccessf(t, myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
+//	assert.HTTPSuccessf(t, myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPSuccessf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
@@ -301,7 +343,7 @@ func HTTPSuccessf(t TestingT, handler http.HandlerFunc, method string, url strin
 
 // Implementsf asserts that an object is implemented by the specified interface.
 //
-//    assert.Implementsf(t, (*MyInterface)(nil), new(MyObject), "error message %s", "formatted")
+//	assert.Implementsf(t, (*MyInterface)(nil), new(MyObject), "error message %s", "formatted")
 func Implementsf(t TestingT, interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -311,7 +353,7 @@ func Implementsf(t TestingT, interfaceObject interface{}, object interface{}, ms
 
 // InDeltaf asserts that the two numerals are within delta of each other.
 //
-// 	 assert.InDeltaf(t, math.Pi, 22/7.0, 0.01, "error message %s", "formatted")
+//	assert.InDeltaf(t, math.Pi, 22/7.0, 0.01, "error message %s", "formatted")
 func InDeltaf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -353,9 +395,9 @@ func InEpsilonSlicef(t TestingT, expected interface{}, actual interface{}, epsil
 
 // IsDecreasingf asserts that the collection is decreasing
 //
-//    assert.IsDecreasingf(t, []int{2, 1, 0}, "error message %s", "formatted")
+//	assert.IsDecreasingf(t, []int{2, 1, 0}, "error message %s", "formatted")
-//    assert.IsDecreasingf(t, []float{2, 1}, "error message %s", "formatted")
+//	assert.IsDecreasingf(t, []float{2, 1}, "error message %s", "formatted")
-//    assert.IsDecreasingf(t, []string{"b", "a"}, "error message %s", "formatted")
+//	assert.IsDecreasingf(t, []string{"b", "a"}, "error message %s", "formatted")
 func IsDecreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -365,9 +407,9 @@ func IsDecreasingf(t TestingT, object interface{}, msg string, args ...interface
 
 // IsIncreasingf asserts that the collection is increasing
 //
-//    assert.IsIncreasingf(t, []int{1, 2, 3}, "error message %s", "formatted")
+//	assert.IsIncreasingf(t, []int{1, 2, 3}, "error message %s", "formatted")
-//    assert.IsIncreasingf(t, []float{1, 2}, "error message %s", "formatted")
+//	assert.IsIncreasingf(t, []float{1, 2}, "error message %s", "formatted")
-//    assert.IsIncreasingf(t, []string{"a", "b"}, "error message %s", "formatted")
+//	assert.IsIncreasingf(t, []string{"a", "b"}, "error message %s", "formatted")
 func IsIncreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -377,9 +419,9 @@ func IsIncreasingf(t TestingT, object interface{}, msg string, args ...interface
 
 // IsNonDecreasingf asserts that the collection is not decreasing
 //
-//    assert.IsNonDecreasingf(t, []int{1, 1, 2}, "error message %s", "formatted")
+//	assert.IsNonDecreasingf(t, []int{1, 1, 2}, "error message %s", "formatted")
-//    assert.IsNonDecreasingf(t, []float{1, 2}, "error message %s", "formatted")
+//	assert.IsNonDecreasingf(t, []float{1, 2}, "error message %s", "formatted")
-//    assert.IsNonDecreasingf(t, []string{"a", "b"}, "error message %s", "formatted")
+//	assert.IsNonDecreasingf(t, []string{"a", "b"}, "error message %s", "formatted")
 func IsNonDecreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -389,9 +431,9 @@ func IsNonDecreasingf(t TestingT, object interface{}, msg string, args ...interf
 
 // IsNonIncreasingf asserts that the collection is not increasing
 //
-//    assert.IsNonIncreasingf(t, []int{2, 1, 1}, "error message %s", "formatted")
+//	assert.IsNonIncreasingf(t, []int{2, 1, 1}, "error message %s", "formatted")
-//    assert.IsNonIncreasingf(t, []float{2, 1}, "error message %s", "formatted")
+//	assert.IsNonIncreasingf(t, []float{2, 1}, "error message %s", "formatted")
-//    assert.IsNonIncreasingf(t, []string{"b", "a"}, "error message %s", "formatted")
+//	assert.IsNonIncreasingf(t, []string{"b", "a"}, "error message %s", "formatted")
 func IsNonIncreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -409,7 +451,7 @@ func IsTypef(t TestingT, expectedType interface{}, object interface{}, msg strin
 
 // JSONEqf asserts that two JSON strings are equivalent.
 //
-//  assert.JSONEqf(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
+//	assert.JSONEqf(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
 func JSONEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -420,7 +462,7 @@ func JSONEqf(t TestingT, expected string, actual string, msg string, args ...int
 // Lenf asserts that the specified object has specific length.
 // Lenf also fails if the object has a type that len() not accept.
 //
-//    assert.Lenf(t, mySlice, 3, "error message %s", "formatted")
+//	assert.Lenf(t, mySlice, 3, "error message %s", "formatted")
 func Lenf(t TestingT, object interface{}, length int, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -430,9 +472,9 @@ func Lenf(t TestingT, object interface{}, length int, msg string, args ...interf
 
 // Lessf asserts that the first element is less than the second
 //
-//    assert.Lessf(t, 1, 2, "error message %s", "formatted")
+//	assert.Lessf(t, 1, 2, "error message %s", "formatted")
-//    assert.Lessf(t, float64(1), float64(2), "error message %s", "formatted")
+//	assert.Lessf(t, float64(1), float64(2), "error message %s", "formatted")
-//    assert.Lessf(t, "a", "b", "error message %s", "formatted")
+//	assert.Lessf(t, "a", "b", "error message %s", "formatted")
 func Lessf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -442,10 +484,10 @@ func Lessf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...inter
 
 // LessOrEqualf asserts that the first element is less than or equal to the second
 //
-//    assert.LessOrEqualf(t, 1, 2, "error message %s", "formatted")
+//	assert.LessOrEqualf(t, 1, 2, "error message %s", "formatted")
-//    assert.LessOrEqualf(t, 2, 2, "error message %s", "formatted")
+//	assert.LessOrEqualf(t, 2, 2, "error message %s", "formatted")
-//    assert.LessOrEqualf(t, "a", "b", "error message %s", "formatted")
+//	assert.LessOrEqualf(t, "a", "b", "error message %s", "formatted")
-//    assert.LessOrEqualf(t, "b", "b", "error message %s", "formatted")
+//	assert.LessOrEqualf(t, "b", "b", "error message %s", "formatted")
 func LessOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -455,8 +497,8 @@ func LessOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args .
 
 // Negativef asserts that the specified element is negative
 //
-//    assert.Negativef(t, -1, "error message %s", "formatted")
+//	assert.Negativef(t, -1, "error message %s", "formatted")
-//    assert.Negativef(t, -1.23, "error message %s", "formatted")
+//	assert.Negativef(t, -1.23, "error message %s", "formatted")
 func Negativef(t TestingT, e interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -467,7 +509,7 @@ func Negativef(t TestingT, e interface{}, msg string, args ...interface{}) bool
 // Neverf asserts that the given condition doesn't satisfy in waitFor time,
 // periodically checking the target function each tick.
 //
-//    assert.Neverf(t, func() bool { return false; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")
+//	assert.Neverf(t, func() bool { return false; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")
 func Neverf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -477,7 +519,7 @@ func Neverf(t TestingT, condition func() bool, waitFor time.Duration, tick time.
 
 // Nilf asserts that the specified object is nil.
 //
-//    assert.Nilf(t, err, "error message %s", "formatted")
+//	assert.Nilf(t, err, "error message %s", "formatted")
 func Nilf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -496,10 +538,10 @@ func NoDirExistsf(t TestingT, path string, msg string, args ...interface{}) bool
 
 // NoErrorf asserts that a function returned no error (i.e. `nil`).
 //
-//   actualObj, err := SomeFunction()
+//	  actualObj, err := SomeFunction()
-//   if assert.NoErrorf(t, err, "error message %s", "formatted") {
+//	  if assert.NoErrorf(t, err, "error message %s", "formatted") {
-// 	   assert.Equal(t, expectedObj, actualObj)
+//		   assert.Equal(t, expectedObj, actualObj)
-//   }
+//	  }
 func NoErrorf(t TestingT, err error, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -519,9 +561,9 @@ func NoFileExistsf(t TestingT, path string, msg string, args ...interface{}) boo
 // NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the
 // specified substring or element.
 //
-//    assert.NotContainsf(t, "Hello World", "Earth", "error message %s", "formatted")
+//	assert.NotContainsf(t, "Hello World", "Earth", "error message %s", "formatted")
-//    assert.NotContainsf(t, ["Hello", "World"], "Earth", "error message %s", "formatted")
+//	assert.NotContainsf(t, ["Hello", "World"], "Earth", "error message %s", "formatted")
-//    assert.NotContainsf(t, {"Hello": "World"}, "Earth", "error message %s", "formatted")
+//	assert.NotContainsf(t, {"Hello": "World"}, "Earth", "error message %s", "formatted")
 func NotContainsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -532,9 +574,9 @@ func NotContainsf(t TestingT, s interface{}, contains interface{}, msg string, a
 // NotEmptyf asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
 // a slice or a channel with len == 0.
 //
-//  if assert.NotEmptyf(t, obj, "error message %s", "formatted") {
+//	if assert.NotEmptyf(t, obj, "error message %s", "formatted") {
-//    assert.Equal(t, "two", obj[1])
+//	  assert.Equal(t, "two", obj[1])
-//  }
+//	}
 func NotEmptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -544,7 +586,7 @@ func NotEmptyf(t TestingT, object interface{}, msg string, args ...interface{})
 
 // NotEqualf asserts that the specified values are NOT equal.
 //
-//    assert.NotEqualf(t, obj1, obj2, "error message %s", "formatted")
+//	assert.NotEqualf(t, obj1, obj2, "error message %s", "formatted")
 //
 // Pointer variable equality is determined based on the equality of the
 // referenced values (as opposed to the memory addresses).
@@ -557,7 +599,7 @@ func NotEqualf(t TestingT, expected interface{}, actual interface{}, msg string,
 
 // NotEqualValuesf asserts that two objects are not equal even when converted to the same type
 //
-//    assert.NotEqualValuesf(t, obj1, obj2, "error message %s", "formatted")
+//	assert.NotEqualValuesf(t, obj1, obj2, "error message %s", "formatted")
 func NotEqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -576,7 +618,7 @@ func NotErrorIsf(t TestingT, err error, target error, msg string, args ...interf
 
 // NotNilf asserts that the specified object is not nil.
 //
-//    assert.NotNilf(t, err, "error message %s", "formatted")
+//	assert.NotNilf(t, err, "error message %s", "formatted")
 func NotNilf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -586,7 +628,7 @@ func NotNilf(t TestingT, object interface{}, msg string, args ...interface{}) bo
 
 // NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
 //
-//   assert.NotPanicsf(t, func(){ RemainCalm() }, "error message %s", "formatted")
+//	assert.NotPanicsf(t, func(){ RemainCalm() }, "error message %s", "formatted")
 func NotPanicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -596,8 +638,8 @@ func NotPanicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bo
 
 // NotRegexpf asserts that a specified regexp does not match a string.
 //
-//  assert.NotRegexpf(t, regexp.MustCompile("starts"), "it's starting", "error message %s", "formatted")
+//	assert.NotRegexpf(t, regexp.MustCompile("starts"), "it's starting", "error message %s", "formatted")
-//  assert.NotRegexpf(t, "^start", "it's not starting", "error message %s", "formatted")
+//	assert.NotRegexpf(t, "^start", "it's not starting", "error message %s", "formatted")
 func NotRegexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -607,7 +649,7 @@ func NotRegexpf(t TestingT, rx interface{}, str interface{}, msg string, args ..
 
 // NotSamef asserts that two pointers do not reference the same object.
 //
-//    assert.NotSamef(t, ptr1, ptr2, "error message %s", "formatted")
+//	assert.NotSamef(t, ptr1, ptr2, "error message %s", "formatted")
 //
 // Both arguments must be pointer variables. Pointer variable sameness is
 // determined based on the equality of both type and value.
@@ -621,7 +663,7 @@ func NotSamef(t TestingT, expected interface{}, actual interface{}, msg string,
 // NotSubsetf asserts that the specified list(array, slice...) contains not all
 // elements given in the specified subset(array, slice...).
 //
-//    assert.NotSubsetf(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
+//	assert.NotSubsetf(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
 func NotSubsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -639,7 +681,7 @@ func NotZerof(t TestingT, i interface{}, msg string, args ...interface{}) bool {
 
 // Panicsf asserts that the code inside the specified PanicTestFunc panics.
 //
-//   assert.Panicsf(t, func(){ GoCrazy() }, "error message %s", "formatted")
+//	assert.Panicsf(t, func(){ GoCrazy() }, "error message %s", "formatted")
 func Panicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -651,7 +693,7 @@ func Panicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool
 // panics, and that the recovered panic value is an error that satisfies the
 // EqualError comparison.
 //
-//   assert.PanicsWithErrorf(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
+//	assert.PanicsWithErrorf(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
 func PanicsWithErrorf(t TestingT, errString string, f PanicTestFunc, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -662,7 +704,7 @@ func PanicsWithErrorf(t TestingT, errString string, f PanicTestFunc, msg string,
 // PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that
 // the recovered panic value equals the expected panic value.
 //
-//   assert.PanicsWithValuef(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
+//	assert.PanicsWithValuef(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
 func PanicsWithValuef(t TestingT, expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -672,8 +714,8 @@ func PanicsWithValuef(t TestingT, expected interface{}, f PanicTestFunc, msg str
 
 // Positivef asserts that the specified element is positive
 //
-//    assert.Positivef(t, 1, "error message %s", "formatted")
+//	assert.Positivef(t, 1, "error message %s", "formatted")
-//    assert.Positivef(t, 1.23, "error message %s", "formatted")
+//	assert.Positivef(t, 1.23, "error message %s", "formatted")
 func Positivef(t TestingT, e interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -683,8 +725,8 @@ func Positivef(t TestingT, e interface{}, msg string, args ...interface{}) bool
 
 // Regexpf asserts that a specified regexp matches a string.
 //
-//  assert.Regexpf(t, regexp.MustCompile("start"), "it's starting", "error message %s", "formatted")
+//	assert.Regexpf(t, regexp.MustCompile("start"), "it's starting", "error message %s", "formatted")
-//  assert.Regexpf(t, "start...$", "it's not starting", "error message %s", "formatted")
+//	assert.Regexpf(t, "start...$", "it's not starting", "error message %s", "formatted")
 func Regexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -694,7 +736,7 @@ func Regexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...in
 
 // Samef asserts that two pointers reference the same object.
 //
-//    assert.Samef(t, ptr1, ptr2, "error message %s", "formatted")
+//	assert.Samef(t, ptr1, ptr2, "error message %s", "formatted")
 //
 // Both arguments must be pointer variables. Pointer variable sameness is
 // determined based on the equality of both type and value.
@@ -708,7 +750,7 @@ func Samef(t TestingT, expected interface{}, actual interface{}, msg string, arg
 // Subsetf asserts that the specified list(array, slice...) contains all
 // elements given in the specified subset(array, slice...).
 //
-//    assert.Subsetf(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
+//	assert.Subsetf(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
 func Subsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -718,7 +760,7 @@ func Subsetf(t TestingT, list interface{}, subset interface{}, msg string, args
 
 // Truef asserts that the specified value is true.
 //
-//    assert.Truef(t, myBool, "error message %s", "formatted")
+//	assert.Truef(t, myBool, "error message %s", "formatted")
 func Truef(t TestingT, value bool, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -728,7 +770,7 @@ func Truef(t TestingT, value bool, msg string, args ...interface{}) bool {
 
 // WithinDurationf asserts that the two times are within duration delta of each other.
 //
-//   assert.WithinDurationf(t, time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
+//	assert.WithinDurationf(t, time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
 func WithinDurationf(t TestingT, expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -738,7 +780,7 @@ func WithinDurationf(t TestingT, expected time.Time, actual time.Time, delta tim
 
 // WithinRangef asserts that a time is within a time range (inclusive).
 //
-//   assert.WithinRangef(t, time.Now(), time.Now().Add(-time.Second), time.Now().Add(time.Second), "error message %s", "formatted")
+//	assert.WithinRangef(t, time.Now(), time.Now().Add(-time.Second), time.Now().Add(time.Second), "error message %s", "formatted")
 func WithinRangef(t TestingT, actual time.Time, start time.Time, end time.Time, msg string, args ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()

vendor/github.com/stretchr/testify/assert/assertion_order.go

@@ -46,36 +46,36 @@ func isOrdered(t TestingT, object interface{}, allowedComparesResults []CompareT
 
 // IsIncreasing asserts that the collection is increasing
 //
-//    assert.IsIncreasing(t, []int{1, 2, 3})
+//	assert.IsIncreasing(t, []int{1, 2, 3})
-//    assert.IsIncreasing(t, []float{1, 2})
+//	assert.IsIncreasing(t, []float{1, 2})
-//    assert.IsIncreasing(t, []string{"a", "b"})
+//	assert.IsIncreasing(t, []string{"a", "b"})
 func IsIncreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 	return isOrdered(t, object, []CompareType{compareLess}, "\"%v\" is not less than \"%v\"", msgAndArgs...)
 }
 
 // IsNonIncreasing asserts that the collection is not increasing
 //
-//    assert.IsNonIncreasing(t, []int{2, 1, 1})
+//	assert.IsNonIncreasing(t, []int{2, 1, 1})
-//    assert.IsNonIncreasing(t, []float{2, 1})
+//	assert.IsNonIncreasing(t, []float{2, 1})
-//    assert.IsNonIncreasing(t, []string{"b", "a"})
+//	assert.IsNonIncreasing(t, []string{"b", "a"})
 func IsNonIncreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 	return isOrdered(t, object, []CompareType{compareEqual, compareGreater}, "\"%v\" is not greater than or equal to \"%v\"", msgAndArgs...)
 }
 
 // IsDecreasing asserts that the collection is decreasing
 //
-//    assert.IsDecreasing(t, []int{2, 1, 0})
+//	assert.IsDecreasing(t, []int{2, 1, 0})
-//    assert.IsDecreasing(t, []float{2, 1})
+//	assert.IsDecreasing(t, []float{2, 1})
-//    assert.IsDecreasing(t, []string{"b", "a"})
+//	assert.IsDecreasing(t, []string{"b", "a"})
 func IsDecreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 	return isOrdered(t, object, []CompareType{compareGreater}, "\"%v\" is not greater than \"%v\"", msgAndArgs...)
 }
 
 // IsNonDecreasing asserts that the collection is not decreasing
 //
-//    assert.IsNonDecreasing(t, []int{1, 1, 2})
+//	assert.IsNonDecreasing(t, []int{1, 1, 2})
-//    assert.IsNonDecreasing(t, []float{1, 2})
+//	assert.IsNonDecreasing(t, []float{1, 2})
-//    assert.IsNonDecreasing(t, []string{"a", "b"})
+//	assert.IsNonDecreasing(t, []string{"a", "b"})
 func IsNonDecreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 	return isOrdered(t, object, []CompareType{compareLess, compareEqual}, "\"%v\" is not less than or equal to \"%v\"", msgAndArgs...)
 }

vendor/github.com/stretchr/testify/assert/assertions.go

@@ -75,6 +75,77 @@ func ObjectsAreEqual(expected, actual interface{}) bool {
 	return bytes.Equal(exp, act)
 }
 
+// copyExportedFields iterates downward through nested data structures and creates a copy
+// that only contains the exported struct fields.
+func copyExportedFields(expected interface{}) interface{} {
+	if isNil(expected) {
+		return expected
+	}
+
+	expectedType := reflect.TypeOf(expected)
+	expectedKind := expectedType.Kind()
+	expectedValue := reflect.ValueOf(expected)
+
+	switch expectedKind {
+	case reflect.Struct:
+		result := reflect.New(expectedType).Elem()
+		for i := 0; i < expectedType.NumField(); i++ {
+			field := expectedType.Field(i)
+			isExported := field.IsExported()
+			if isExported {
+				fieldValue := expectedValue.Field(i)
+				if isNil(fieldValue) || isNil(fieldValue.Interface()) {
+					continue
+				}
+				newValue := copyExportedFields(fieldValue.Interface())
+				result.Field(i).Set(reflect.ValueOf(newValue))
+			}
+		}
+		return result.Interface()
+
+	case reflect.Ptr:
+		result := reflect.New(expectedType.Elem())
+		unexportedRemoved := copyExportedFields(expectedValue.Elem().Interface())
+		result.Elem().Set(reflect.ValueOf(unexportedRemoved))
+		return result.Interface()
+
+	case reflect.Array, reflect.Slice:
+		result := reflect.MakeSlice(expectedType, expectedValue.Len(), expectedValue.Len())
+		for i := 0; i < expectedValue.Len(); i++ {
+			index := expectedValue.Index(i)
+			if isNil(index) {
+				continue
+			}
+			unexportedRemoved := copyExportedFields(index.Interface())
+			result.Index(i).Set(reflect.ValueOf(unexportedRemoved))
+		}
+		return result.Interface()
+
+	case reflect.Map:
+		result := reflect.MakeMap(expectedType)
+		for _, k := range expectedValue.MapKeys() {
+			index := expectedValue.MapIndex(k)
+			unexportedRemoved := copyExportedFields(index.Interface())
+			result.SetMapIndex(k, reflect.ValueOf(unexportedRemoved))
+		}
+		return result.Interface()
+
+	default:
+		return expected
+	}
+}
+
+// ObjectsExportedFieldsAreEqual determines if the exported (public) fields of two objects are
+// considered equal. This comparison of only exported fields is applied recursively to nested data
+// structures.
+//
+// This function does no assertion of any kind.
+func ObjectsExportedFieldsAreEqual(expected, actual interface{}) bool {
+	expectedCleaned := copyExportedFields(expected)
+	actualCleaned := copyExportedFields(actual)
+	return ObjectsAreEqualValues(expectedCleaned, actualCleaned)
+}
+
 // ObjectsAreEqualValues gets whether two objects are equal, or if their
 // values are equal.
 func ObjectsAreEqualValues(expected, actual interface{}) bool {
@@ -271,7 +342,7 @@ type labeledContent struct {
 
 // labeledOutput returns a string consisting of the provided labeledContent. Each labeled output is appended in the following manner:
 //
-//   \t{{label}}:{{align_spaces}}\t{{content}}\n
+//	\t{{label}}:{{align_spaces}}\t{{content}}\n
 //
 // The initial carriage return is required to undo/erase any padding added by testing.T.Errorf. The "\t{{label}}:" is for the label.
 // If a label is shorter than the longest label provided, padding spaces are added to make all the labels match in length. Once this
@@ -294,7 +365,7 @@ func labeledOutput(content ...labeledContent) string {
 
 // Implements asserts that an object is implemented by the specified interface.
 //
-//    assert.Implements(t, (*MyInterface)(nil), new(MyObject))
+//	assert.Implements(t, (*MyInterface)(nil), new(MyObject))
 func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -326,7 +397,7 @@ func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs
 
 // Equal asserts that two objects are equal.
 //
-//    assert.Equal(t, 123, 123)
+//	assert.Equal(t, 123, 123)
 //
 // Pointer variable equality is determined based on the equality of the
 // referenced values (as opposed to the memory addresses). Function equality
@@ -367,7 +438,7 @@ func validateEqualArgs(expected, actual interface{}) error {
 
 // Same asserts that two pointers reference the same object.
 //
-//    assert.Same(t, ptr1, ptr2)
+//	assert.Same(t, ptr1, ptr2)
 //
 // Both arguments must be pointer variables. Pointer variable sameness is
 // determined based on the equality of both type and value.
@@ -387,7 +458,7 @@ func Same(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) b
 
 // NotSame asserts that two pointers do not reference the same object.
 //
-//    assert.NotSame(t, ptr1, ptr2)
+//	assert.NotSame(t, ptr1, ptr2)
 //
 // Both arguments must be pointer variables. Pointer variable sameness is
 // determined based on the equality of both type and value.
@@ -455,7 +526,7 @@ func truncatingFormat(data interface{}) string {
 // EqualValues asserts that two objects are equal or convertable to the same types
 // and equal.
 //
-//    assert.EqualValues(t, uint32(123), int32(123))
+//	assert.EqualValues(t, uint32(123), int32(123))
 func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -473,9 +544,53 @@ func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interfa
 
 }
 
+// EqualExportedValues asserts that the types of two objects are equal and their public
+// fields are also equal. This is useful for comparing structs that have private fields
+// that could potentially differ.
+//
+//	 type S struct {
+//		Exported     	int
+//		notExported   	int
+//	 }
+//	 assert.EqualExportedValues(t, S{1, 2}, S{1, 3}) => true
+//	 assert.EqualExportedValues(t, S{1, 2}, S{2, 3}) => false
+func EqualExportedValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+	if h, ok := t.(tHelper); ok {
+		h.Helper()
+	}
+
+	aType := reflect.TypeOf(expected)
+	bType := reflect.TypeOf(actual)
+
+	if aType != bType {
+		return Fail(t, fmt.Sprintf("Types expected to match exactly\n\t%v != %v", aType, bType), msgAndArgs...)
+	}
+
+	if aType.Kind() != reflect.Struct {
+		return Fail(t, fmt.Sprintf("Types expected to both be struct \n\t%v != %v", aType.Kind(), reflect.Struct), msgAndArgs...)
+	}
+
+	if bType.Kind() != reflect.Struct {
+		return Fail(t, fmt.Sprintf("Types expected to both be struct \n\t%v != %v", bType.Kind(), reflect.Struct), msgAndArgs...)
+	}
+
+	expected = copyExportedFields(expected)
+	actual = copyExportedFields(actual)
+
+	if !ObjectsAreEqualValues(expected, actual) {
+		diff := diff(expected, actual)
+		expected, actual = formatUnequalValues(expected, actual)
+		return Fail(t, fmt.Sprintf("Not equal (comparing only exported fields): \n"+
+			"expected: %s\n"+
+			"actual  : %s%s", expected, actual, diff), msgAndArgs...)
+	}
+
+	return true
+}
+
 // Exactly asserts that two objects are equal in value and type.
 //
-//    assert.Exactly(t, int32(123), int64(123))
+//	assert.Exactly(t, int32(123), int64(123))
 func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -494,7 +609,7 @@ func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}
 
 // NotNil asserts that the specified object is not nil.
 //
-//    assert.NotNil(t, err)
+//	assert.NotNil(t, err)
 func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 	if !isNil(object) {
 		return true
@@ -540,7 +655,7 @@ func isNil(object interface{}) bool {
 
 // Nil asserts that the specified object is nil.
 //
-//    assert.Nil(t, err)
+//	assert.Nil(t, err)
 func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 	if isNil(object) {
 		return true
@@ -583,7 +698,7 @@ func isEmpty(object interface{}) bool {
 // Empty asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
 // a slice or a channel with len == 0.
 //
-//  assert.Empty(t, obj)
+//	assert.Empty(t, obj)
 func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 	pass := isEmpty(object)
 	if !pass {
@@ -600,9 +715,9 @@ func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 // NotEmpty asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
 // a slice or a channel with len == 0.
 //
-//  if assert.NotEmpty(t, obj) {
+//	if assert.NotEmpty(t, obj) {
-//    assert.Equal(t, "two", obj[1])
+//	  assert.Equal(t, "two", obj[1])
-//  }
+//	}
 func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
 	pass := !isEmpty(object)
 	if !pass {
@@ -631,7 +746,7 @@ func getLen(x interface{}) (ok bool, length int) {
 // Len asserts that the specified object has specific length.
 // Len also fails if the object has a type that len() not accept.
 //
-//    assert.Len(t, mySlice, 3)
+//	assert.Len(t, mySlice, 3)
 func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -649,7 +764,7 @@ func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{})
 
 // True asserts that the specified value is true.
 //
-//    assert.True(t, myBool)
+//	assert.True(t, myBool)
 func True(t TestingT, value bool, msgAndArgs ...interface{}) bool {
 	if !value {
 		if h, ok := t.(tHelper); ok {
@@ -664,7 +779,7 @@ func True(t TestingT, value bool, msgAndArgs ...interface{}) bool {
 
 // False asserts that the specified value is false.
 //
-//    assert.False(t, myBool)
+//	assert.False(t, myBool)
 func False(t TestingT, value bool, msgAndArgs ...interface{}) bool {
 	if value {
 		if h, ok := t.(tHelper); ok {
@@ -679,7 +794,7 @@ func False(t TestingT, value bool, msgAndArgs ...interface{}) bool {
 
 // NotEqual asserts that the specified values are NOT equal.
 //
-//    assert.NotEqual(t, obj1, obj2)
+//	assert.NotEqual(t, obj1, obj2)
 //
 // Pointer variable equality is determined based on the equality of the
 // referenced values (as opposed to the memory addresses).
@@ -702,7 +817,7 @@ func NotEqual(t TestingT, expected, actual interface{}, msgAndArgs ...interface{
 
 // NotEqualValues asserts that two objects are not equal even when converted to the same type
 //
-//    assert.NotEqualValues(t, obj1, obj2)
+//	assert.NotEqualValues(t, obj1, obj2)
 func NotEqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -761,9 +876,9 @@ func containsElement(list interface{}, element interface{}) (ok, found bool) {
 // Contains asserts that the specified string, list(array, slice...) or map contains the
 // specified substring or element.
 //
-//    assert.Contains(t, "Hello World", "World")
+//	assert.Contains(t, "Hello World", "World")
-//    assert.Contains(t, ["Hello", "World"], "World")
+//	assert.Contains(t, ["Hello", "World"], "World")
-//    assert.Contains(t, {"Hello": "World"}, "Hello")
+//	assert.Contains(t, {"Hello": "World"}, "Hello")
 func Contains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -784,9 +899,9 @@ func Contains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bo
 // NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
 // specified substring or element.
 //
-//    assert.NotContains(t, "Hello World", "Earth")
+//	assert.NotContains(t, "Hello World", "Earth")
-//    assert.NotContains(t, ["Hello", "World"], "Earth")
+//	assert.NotContains(t, ["Hello", "World"], "Earth")
-//    assert.NotContains(t, {"Hello": "World"}, "Earth")
+//	assert.NotContains(t, {"Hello": "World"}, "Earth")
 func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -794,10 +909,10 @@ func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{})
 
 	ok, found := containsElement(s, contains)
 	if !ok {
-		return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", s), msgAndArgs...)
+		return Fail(t, fmt.Sprintf("%#v could not be applied builtin len()", s), msgAndArgs...)
 	}
 	if found {
-		return Fail(t, fmt.Sprintf("\"%s\" should not contain \"%s\"", s, contains), msgAndArgs...)
+		return Fail(t, fmt.Sprintf("%#v should not contain %#v", s, contains), msgAndArgs...)
 	}
 
 	return true
@@ -807,7 +922,7 @@ func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{})
 // Subset asserts that the specified list(array, slice...) contains all
 // elements given in the specified subset(array, slice...).
 //
-//    assert.Subset(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
+//	assert.Subset(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
 func Subset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool) {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -863,7 +978,7 @@ func Subset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok
 // NotSubset asserts that the specified list(array, slice...) contains not all
 // elements given in the specified subset(array, slice...).
 //
-//    assert.NotSubset(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
+//	assert.NotSubset(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
 func NotSubset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool) {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1048,7 +1163,7 @@ func didPanic(f PanicTestFunc) (didPanic bool, message interface{}, stack string
 
 // Panics asserts that the code inside the specified PanicTestFunc panics.
 //
-//   assert.Panics(t, func(){ GoCrazy() })
+//	assert.Panics(t, func(){ GoCrazy() })
 func Panics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1064,7 +1179,7 @@ func Panics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
 // PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that
 // the recovered panic value equals the expected panic value.
 //
-//   assert.PanicsWithValue(t, "crazy error", func(){ GoCrazy() })
+//	assert.PanicsWithValue(t, "crazy error", func(){ GoCrazy() })
 func PanicsWithValue(t TestingT, expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1085,7 +1200,7 @@ func PanicsWithValue(t TestingT, expected interface{}, f PanicTestFunc, msgAndAr
 // panics, and that the recovered panic value is an error that satisfies the
 // EqualError comparison.
 //
-//   assert.PanicsWithError(t, "crazy error", func(){ GoCrazy() })
+//	assert.PanicsWithError(t, "crazy error", func(){ GoCrazy() })
 func PanicsWithError(t TestingT, errString string, f PanicTestFunc, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1105,7 +1220,7 @@ func PanicsWithError(t TestingT, errString string, f PanicTestFunc, msgAndArgs .
 
 // NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
 //
-//   assert.NotPanics(t, func(){ RemainCalm() })
+//	assert.NotPanics(t, func(){ RemainCalm() })
 func NotPanics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1120,7 +1235,7 @@ func NotPanics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
 
 // WithinDuration asserts that the two times are within duration delta of each other.
 //
-//   assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second)
+//	assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second)
 func WithinDuration(t TestingT, expected, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1136,7 +1251,7 @@ func WithinDuration(t TestingT, expected, actual time.Time, delta time.Duration,
 
 // WithinRange asserts that a time is within a time range (inclusive).
 //
-//   assert.WithinRange(t, time.Now(), time.Now().Add(-time.Second), time.Now().Add(time.Second))
+//	assert.WithinRange(t, time.Now(), time.Now().Add(-time.Second), time.Now().Add(time.Second))
 func WithinRange(t TestingT, actual, start, end time.Time, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1195,7 +1310,7 @@ func toFloat(x interface{}) (float64, bool) {
 
 // InDelta asserts that the two numerals are within delta of each other.
 //
-// 	 assert.InDelta(t, math.Pi, 22/7.0, 0.01)
+//	assert.InDelta(t, math.Pi, 22/7.0, 0.01)
 func InDelta(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1368,10 +1483,10 @@ func InEpsilonSlice(t TestingT, expected, actual interface{}, epsilon float64, m
 
 // NoError asserts that a function returned no error (i.e. `nil`).
 //
-//   actualObj, err := SomeFunction()
+//	  actualObj, err := SomeFunction()
-//   if assert.NoError(t, err) {
+//	  if assert.NoError(t, err) {
-//	   assert.Equal(t, expectedObj, actualObj)
+//		   assert.Equal(t, expectedObj, actualObj)
-//   }
+//	  }
 func NoError(t TestingT, err error, msgAndArgs ...interface{}) bool {
 	if err != nil {
 		if h, ok := t.(tHelper); ok {
@@ -1385,10 +1500,10 @@ func NoError(t TestingT, err error, msgAndArgs ...interface{}) bool {
 
 // Error asserts that a function returned an error (i.e. not `nil`).
 //
-//   actualObj, err := SomeFunction()
+//	  actualObj, err := SomeFunction()
-//   if assert.Error(t, err) {
+//	  if assert.Error(t, err) {
-//	   assert.Equal(t, expectedError, err)
+//		   assert.Equal(t, expectedError, err)
-//   }
+//	  }
 func Error(t TestingT, err error, msgAndArgs ...interface{}) bool {
 	if err == nil {
 		if h, ok := t.(tHelper); ok {
@@ -1403,8 +1518,8 @@ func Error(t TestingT, err error, msgAndArgs ...interface{}) bool {
 // EqualError asserts that a function returned an error (i.e. not `nil`)
 // and that it is equal to the provided error.
 //
-//   actualObj, err := SomeFunction()
+//	actualObj, err := SomeFunction()
-//   assert.EqualError(t, err,  expectedErrorString)
+//	assert.EqualError(t, err,  expectedErrorString)
 func EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1426,8 +1541,8 @@ func EqualError(t TestingT, theError error, errString string, msgAndArgs ...inte
 // ErrorContains asserts that a function returned an error (i.e. not `nil`)
 // and that the error contains the specified substring.
 //
-//   actualObj, err := SomeFunction()
+//	actualObj, err := SomeFunction()
-//   assert.ErrorContains(t, err,  expectedErrorSubString)
+//	assert.ErrorContains(t, err,  expectedErrorSubString)
 func ErrorContains(t TestingT, theError error, contains string, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1460,8 +1575,8 @@ func matchRegexp(rx interface{}, str interface{}) bool {
 
 // Regexp asserts that a specified regexp matches a string.
 //
-//  assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
+//	assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
-//  assert.Regexp(t, "start...$", "it's not starting")
+//	assert.Regexp(t, "start...$", "it's not starting")
 func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1478,8 +1593,8 @@ func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface
 
 // NotRegexp asserts that a specified regexp does not match a string.
 //
-//  assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
+//	assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
-//  assert.NotRegexp(t, "^start", "it's not starting")
+//	assert.NotRegexp(t, "^start", "it's not starting")
 func NotRegexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1591,7 +1706,7 @@ func NoDirExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
 
 // JSONEq asserts that two JSON strings are equivalent.
 //
-//  assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+//	assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
 func JSONEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1714,7 +1829,7 @@ type tHelper interface {
 // Eventually asserts that given condition will be met in waitFor time,
 // periodically checking target function each tick.
 //
-//    assert.Eventually(t, func() bool { return true; }, time.Second, 10*time.Millisecond)
+//	assert.Eventually(t, func() bool { return true; }, time.Second, 10*time.Millisecond)
 func Eventually(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
@@ -1744,10 +1859,93 @@ func Eventually(t TestingT, condition func() bool, waitFor time.Duration, tick t
 	}
 }
 
+// CollectT implements the TestingT interface and collects all errors.
+type CollectT struct {
+	errors []error
+}
+
+// Errorf collects the error.
+func (c *CollectT) Errorf(format string, args ...interface{}) {
+	c.errors = append(c.errors, fmt.Errorf(format, args...))
+}
+
+// FailNow panics.
+func (c *CollectT) FailNow() {
+	panic("Assertion failed")
+}
+
+// Reset clears the collected errors.
+func (c *CollectT) Reset() {
+	c.errors = nil
+}
+
+// Copy copies the collected errors to the supplied t.
+func (c *CollectT) Copy(t TestingT) {
+	if tt, ok := t.(tHelper); ok {
+		tt.Helper()
+	}
+	for _, err := range c.errors {
+		t.Errorf("%v", err)
+	}
+}
+
+// EventuallyWithT asserts that given condition will be met in waitFor time,
+// periodically checking target function each tick. In contrast to Eventually,
+// it supplies a CollectT to the condition function, so that the condition
+// function can use the CollectT to call other assertions.
+// The condition is considered "met" if no errors are raised in a tick.
+// The supplied CollectT collects all errors from one tick (if there are any).
+// If the condition is not met before waitFor, the collected errors of
+// the last tick are copied to t.
+//
+//	externalValue := false
+//	go func() {
+//		time.Sleep(8*time.Second)
+//		externalValue = true
+//	}()
+//	assert.EventuallyWithT(t, func(c *assert.CollectT) {
+//		// add assertions as needed; any assertion failure will fail the current tick
+//		assert.True(c, externalValue, "expected 'externalValue' to be true")
+//	}, 1*time.Second, 10*time.Second, "external state has not changed to 'true'; still false")
+func EventuallyWithT(t TestingT, condition func(collect *CollectT), waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool {
+	if h, ok := t.(tHelper); ok {
+		h.Helper()
+	}
+
+	collect := new(CollectT)
+	ch := make(chan bool, 1)
+
+	timer := time.NewTimer(waitFor)
+	defer timer.Stop()
+
+	ticker := time.NewTicker(tick)
+	defer ticker.Stop()
+
+	for tick := ticker.C; ; {
+		select {
+		case <-timer.C:
+			collect.Copy(t)
+			return Fail(t, "Condition never satisfied", msgAndArgs...)
+		case <-tick:
+			tick = nil
+			collect.Reset()
+			go func() {
+				condition(collect)
+				ch <- len(collect.errors) == 0
+			}()
+		case v := <-ch:
+			if v {
+				return true
+			}
+			tick = ticker.C
+		}
+	}
+}
+
 // Never asserts that the given condition doesn't satisfy in waitFor time,
 // periodically checking the target function each tick.
 //
-//    assert.Never(t, func() bool { return false; }, time.Second, 10*time.Millisecond)
+//	assert.Never(t, func() bool { return false; }, time.Second, 10*time.Millisecond)
 func Never(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()

vendor/github.com/stretchr/testify/assert/doc.go

@@ -1,39 +1,40 @@
 // Package assert provides a set of comprehensive testing tools for use with the normal Go testing system.
 //
-// Example Usage
+// # Example Usage
 //
 // The following is a complete example using assert in a standard test function:
-//    import (
-//      "testing"
-//      "github.com/stretchr/testify/assert"
-//    )
 //
-//    func TestSomething(t *testing.T) {
+//	import (
+//	  "testing"
+//	  "github.com/stretchr/testify/assert"
+//	)
 //
-//      var a string = "Hello"
+//	func TestSomething(t *testing.T) {
-//      var b string = "Hello"
 //
-//      assert.Equal(t, a, b, "The two words should be the same.")
+//	  var a string = "Hello"
+//	  var b string = "Hello"
 //
-//    }
+//	  assert.Equal(t, a, b, "The two words should be the same.")
+//
+//	}
 //
 // if you assert many times, use the format below:
 //
-//    import (
+//	import (
-//      "testing"
+//	  "testing"
-//      "github.com/stretchr/testify/assert"
+//	  "github.com/stretchr/testify/assert"
-//    )
+//	)
 //
-//    func TestSomething(t *testing.T) {
+//	func TestSomething(t *testing.T) {
-//      assert := assert.New(t)
+//	  assert := assert.New(t)
 //
-//      var a string = "Hello"
+//	  var a string = "Hello"
-//      var b string = "Hello"
+//	  var b string = "Hello"
 //
-//      assert.Equal(a, b, "The two words should be the same.")
+//	  assert.Equal(a, b, "The two words should be the same.")
-//    }
+//	}
 //
-// Assertions
+// # Assertions
 //
 // Assertions allow you to easily write test code, and are global funcs in the `assert` package.
 // All assertion functions take, as the first argument, the `*testing.T` object provided by the

vendor/github.com/stretchr/testify/assert/http_assertions.go

@@ -23,7 +23,7 @@ func httpCode(handler http.HandlerFunc, method, url string, values url.Values) (
 
 // HTTPSuccess asserts that a specified handler returns a success status code.
 //
-//  assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)
+//	assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
@@ -45,7 +45,7 @@ func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, value
 
 // HTTPRedirect asserts that a specified handler returns a redirect status code.
 //
-//  assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//	assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPRedirect(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
@@ -67,7 +67,7 @@ func HTTPRedirect(t TestingT, handler http.HandlerFunc, method, url string, valu
 
 // HTTPError asserts that a specified handler returns an error status code.
 //
-//  assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//	assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPError(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
@@ -89,7 +89,7 @@ func HTTPError(t TestingT, handler http.HandlerFunc, method, url string, values
 
 // HTTPStatusCode asserts that a specified handler returns a specified status code.
 //
-//  assert.HTTPStatusCode(t, myHandler, "GET", "/notImplemented", nil, 501)
+//	assert.HTTPStatusCode(t, myHandler, "GET", "/notImplemented", nil, 501)
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPStatusCode(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, statuscode int, msgAndArgs ...interface{}) bool {
@@ -124,7 +124,7 @@ func HTTPBody(handler http.HandlerFunc, method, url string, values url.Values) s
 // HTTPBodyContains asserts that a specified handler returns a
 // body that contains a string.
 //
-//  assert.HTTPBodyContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
+//	assert.HTTPBodyContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {
@@ -144,7 +144,7 @@ func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method, url string,
 // HTTPBodyNotContains asserts that a specified handler returns a
 // body that does not contain a string.
 //
-//  assert.HTTPBodyNotContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
+//	assert.HTTPBodyNotContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool {

vendor/github.com/stretchr/testify/mock/doc.go

@@ -1,17 +1,17 @@
 // Package mock provides a system by which it is possible to mock your objects
 // and verify calls are happening as expected.
 //
-// Example Usage
+// # Example Usage
 //
 // The mock package provides an object, Mock, that tracks activity on another object.  It is usually
 // embedded into a test object as shown below:
 //
-//   type MyTestObject struct {
+//	type MyTestObject struct {
-//     // add a Mock object instance
+//	  // add a Mock object instance
-//     mock.Mock
+//	  mock.Mock
 //
-//     // other fields go here as normal
+//	  // other fields go here as normal
-//   }
+//	}
 //
 // When implementing the methods of an interface, you wire your functions up
 // to call the Mock.Called(args...) method, and return the appropriate values.
@@ -19,25 +19,25 @@
 // For example, to mock a method that saves the name and age of a person and returns
 // the year of their birth or an error, you might write this:
 //
-//     func (o *MyTestObject) SavePersonDetails(firstname, lastname string, age int) (int, error) {
+//	func (o *MyTestObject) SavePersonDetails(firstname, lastname string, age int) (int, error) {
-//       args := o.Called(firstname, lastname, age)
+//	  args := o.Called(firstname, lastname, age)
-//       return args.Int(0), args.Error(1)
+//	  return args.Int(0), args.Error(1)
-//     }
+//	}
 //
 // The Int, Error and Bool methods are examples of strongly typed getters that take the argument
 // index position. Given this argument list:
 //
-//     (12, true, "Something")
+//	(12, true, "Something")
 //
 // You could read them out strongly typed like this:
 //
-//     args.Int(0)
+//	args.Int(0)
-//     args.Bool(1)
+//	args.Bool(1)
-//     args.String(2)
+//	args.String(2)
 //
 // For objects of your own type, use the generic Arguments.Get(index) method and make a type assertion:
 //
-//     return args.Get(0).(*MyObject), args.Get(1).(*AnotherObjectOfMine)
+//	return args.Get(0).(*MyObject), args.Get(1).(*AnotherObjectOfMine)
 //
 // This may cause a panic if the object you are getting is nil (the type assertion will fail), in those
 // cases you should check for nil first.

vendor/github.com/stretchr/testify/mock/mock.go

@@ -3,6 +3,7 @@ package mock
 import (
 	"errors"
 	"fmt"
+	"path"
 	"reflect"
 	"regexp"
 	"runtime"
@@ -13,6 +14,7 @@ import (
 	"github.com/davecgh/go-spew/spew"
 	"github.com/pmezard/go-difflib/difflib"
 	"github.com/stretchr/objx"
+
 	"github.com/stretchr/testify/assert"
 )
 
@@ -99,7 +101,7 @@ func (c *Call) unlock() {
 
 // Return specifies the return arguments for the expectation.
 //
-//    Mock.On("DoSomething").Return(errors.New("failed"))
+//	Mock.On("DoSomething").Return(errors.New("failed"))
 func (c *Call) Return(returnArguments ...interface{}) *Call {
 	c.lock()
 	defer c.unlock()
@@ -111,7 +113,7 @@ func (c *Call) Return(returnArguments ...interface{}) *Call {
 
 // Panic specifies if the functon call should fail and the panic message
 //
-//    Mock.On("DoSomething").Panic("test panic")
+//	Mock.On("DoSomething").Panic("test panic")
 func (c *Call) Panic(msg string) *Call {
 	c.lock()
 	defer c.unlock()
@@ -123,14 +125,14 @@ func (c *Call) Panic(msg string) *Call {
 
 // Once indicates that that the mock should only return the value once.
 //
-//    Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Once()
+//	Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Once()
 func (c *Call) Once() *Call {
 	return c.Times(1)
 }
 
 // Twice indicates that that the mock should only return the value twice.
 //
-//    Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Twice()
+//	Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Twice()
 func (c *Call) Twice() *Call {
 	return c.Times(2)
 }
@@ -138,7 +140,7 @@ func (c *Call) Twice() *Call {
 // Times indicates that that the mock should only return the indicated number
 // of times.
 //
-//    Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Times(5)
+//	Mock.On("MyMethod", arg1, arg2).Return(returnArg1, returnArg2).Times(5)
 func (c *Call) Times(i int) *Call {
 	c.lock()
 	defer c.unlock()
@@ -149,7 +151,7 @@ func (c *Call) Times(i int) *Call {
 // WaitUntil sets the channel that will block the mock's return until its closed
 // or a message is received.
 //
-//    Mock.On("MyMethod", arg1, arg2).WaitUntil(time.After(time.Second))
+//	Mock.On("MyMethod", arg1, arg2).WaitUntil(time.After(time.Second))
 func (c *Call) WaitUntil(w <-chan time.Time) *Call {
 	c.lock()
 	defer c.unlock()
@@ -159,7 +161,7 @@ func (c *Call) WaitUntil(w <-chan time.Time) *Call {
 
 // After sets how long to block until the call returns
 //
-//    Mock.On("MyMethod", arg1, arg2).After(time.Second)
+//	Mock.On("MyMethod", arg1, arg2).After(time.Second)
 func (c *Call) After(d time.Duration) *Call {
 	c.lock()
 	defer c.unlock()
@@ -171,10 +173,10 @@ func (c *Call) After(d time.Duration) *Call {
 // mocking a method (such as an unmarshaler) that takes a pointer to a struct and
 // sets properties in such struct
 //
-//    Mock.On("Unmarshal", AnythingOfType("*map[string]interface{}")).Return().Run(func(args Arguments) {
+//	Mock.On("Unmarshal", AnythingOfType("*map[string]interface{}")).Return().Run(func(args Arguments) {
-//    	arg := args.Get(0).(*map[string]interface{})
+//		arg := args.Get(0).(*map[string]interface{})
-//    	arg["foo"] = "bar"
+//		arg["foo"] = "bar"
-//    })
+//	})
 func (c *Call) Run(fn func(args Arguments)) *Call {
 	c.lock()
 	defer c.unlock()
@@ -194,16 +196,18 @@ func (c *Call) Maybe() *Call {
 // On chains a new expectation description onto the mocked interface. This
 // allows syntax like.
 //
-//    Mock.
+//	Mock.
-//       On("MyMethod", 1).Return(nil).
+//	   On("MyMethod", 1).Return(nil).
-//       On("MyOtherMethod", 'a', 'b', 'c').Return(errors.New("Some Error"))
+//	   On("MyOtherMethod", 'a', 'b', 'c').Return(errors.New("Some Error"))
+//
 //go:noinline
 func (c *Call) On(methodName string, arguments ...interface{}) *Call {
 	return c.Parent.On(methodName, arguments...)
 }
 
 // Unset removes a mock handler from being called.
-//    test.On("func", mock.Anything).Unset()
+//
+//	test.On("func", mock.Anything).Unset()
 func (c *Call) Unset() *Call {
 	var unlockOnce sync.Once
 
@@ -249,9 +253,9 @@ func (c *Call) Unset() *Call {
 // calls have been called as expected. The referenced calls may be from the
 // same mock instance and/or other mock instances.
 //
-//     Mock.On("Do").Return(nil).Notbefore(
+//	Mock.On("Do").Return(nil).Notbefore(
-//         Mock.On("Init").Return(nil)
+//	    Mock.On("Init").Return(nil)
-//     )
+//	)
 func (c *Call) NotBefore(calls ...*Call) *Call {
 	c.lock()
 	defer c.unlock()
@@ -334,7 +338,7 @@ func (m *Mock) fail(format string, args ...interface{}) {
 // On starts a description of an expectation of the specified method
 // being called.
 //
-//     Mock.On("MyMethod", arg1, arg2)
+//	Mock.On("MyMethod", arg1, arg2)
 func (m *Mock) On(methodName string, arguments ...interface{}) *Call {
 	for _, arg := range arguments {
 		if v := reflect.ValueOf(arg); v.Kind() == reflect.Func {
@@ -424,6 +428,10 @@ func callString(method string, arguments Arguments, includeArgumentValues bool)
 	if includeArgumentValues {
 		var argVals []string
 		for argIndex, arg := range arguments {
+			if _, ok := arg.(*FunctionalOptionsArgument); ok {
+				argVals = append(argVals, fmt.Sprintf("%d: %s", argIndex, arg))
+				continue
+			}
 			argVals = append(argVals, fmt.Sprintf("%d: %#v", argIndex, arg))
 		}
 		argValsString = fmt.Sprintf("\n\t\t%s", strings.Join(argVals, "\n\t\t"))
@@ -758,6 +766,7 @@ type AnythingOfTypeArgument string
 // name of the type to check for.  Used in Diff and Assert.
 //
 // For example:
+//
 //	Assert(t, AnythingOfType("string"), AnythingOfType("int"))
 func AnythingOfType(t string) AnythingOfTypeArgument {
 	return AnythingOfTypeArgument(t)
@@ -780,6 +789,34 @@ func IsType(t interface{}) *IsTypeArgument {
 	return &IsTypeArgument{t: t}
 }
 
+// FunctionalOptionsArgument is a struct that contains the type and value of an functional option argument
+// for use when type checking.
+type FunctionalOptionsArgument struct {
+	value interface{}
+}
+
+// String returns the string representation of FunctionalOptionsArgument
+func (f *FunctionalOptionsArgument) String() string {
+	var name string
+	tValue := reflect.ValueOf(f.value)
+	if tValue.Len() > 0 {
+		name = "[]" + reflect.TypeOf(tValue.Index(0).Interface()).String()
+	}
+
+	return strings.Replace(fmt.Sprintf("%#v", f.value), "[]interface {}", name, 1)
+}
+
+// FunctionalOptions returns an FunctionalOptionsArgument object containing the functional option type
+// and the values to check of
+//
+// For example:
+// Assert(t, FunctionalOptions("[]foo.FunctionalOption", foo.Opt1(), foo.Opt2()))
+func FunctionalOptions(value ...interface{}) *FunctionalOptionsArgument {
+	return &FunctionalOptionsArgument{
+		value: value,
+	}
+}
+
 // argumentMatcher performs custom argument matching, returning whether or
 // not the argument is matched by the expectation fixture function.
 type argumentMatcher struct {
@@ -926,6 +963,29 @@ func (args Arguments) Diff(objects []interface{}) (string, int) {
 				differences++
 				output = fmt.Sprintf("%s\t%d: FAIL:  type %s != type %s - %s\n", output, i, reflect.TypeOf(t).Name(), reflect.TypeOf(actual).Name(), actualFmt)
 			}
+		} else if reflect.TypeOf(expected) == reflect.TypeOf((*FunctionalOptionsArgument)(nil)) {
+			t := expected.(*FunctionalOptionsArgument).value
+
+			var name string
+			tValue := reflect.ValueOf(t)
+			if tValue.Len() > 0 {
+				name = "[]" + reflect.TypeOf(tValue.Index(0).Interface()).String()
+			}
+
+			tName := reflect.TypeOf(t).Name()
+			if name != reflect.TypeOf(actual).String() && tValue.Len() != 0 {
+				differences++
+				output = fmt.Sprintf("%s\t%d: FAIL:  type %s != type %s - %s\n", output, i, tName, reflect.TypeOf(actual).Name(), actualFmt)
+			} else {
+				if ef, af := assertOpts(t, actual); ef == "" && af == "" {
+					// match
+					output = fmt.Sprintf("%s\t%d: PASS:  %s == %s\n", output, i, tName, tName)
+				} else {
+					// not match
+					differences++
+					output = fmt.Sprintf("%s\t%d: FAIL:  %s != %s\n", output, i, af, ef)
+				}
+			}
 		} else {
 			// normal checking
 
@@ -1102,3 +1162,65 @@ var spewConfig = spew.ConfigState{
 type tHelper interface {
 	Helper()
 }
+
+func assertOpts(expected, actual interface{}) (expectedFmt, actualFmt string) {
+	expectedOpts := reflect.ValueOf(expected)
+	actualOpts := reflect.ValueOf(actual)
+	var expectedNames []string
+	for i := 0; i < expectedOpts.Len(); i++ {
+		expectedNames = append(expectedNames, funcName(expectedOpts.Index(i).Interface()))
+	}
+	var actualNames []string
+	for i := 0; i < actualOpts.Len(); i++ {
+		actualNames = append(actualNames, funcName(actualOpts.Index(i).Interface()))
+	}
+	if !assert.ObjectsAreEqual(expectedNames, actualNames) {
+		expectedFmt = fmt.Sprintf("%v", expectedNames)
+		actualFmt = fmt.Sprintf("%v", actualNames)
+		return
+	}
+
+	for i := 0; i < expectedOpts.Len(); i++ {
+		expectedOpt := expectedOpts.Index(i).Interface()
+		actualOpt := actualOpts.Index(i).Interface()
+
+		expectedFunc := expectedNames[i]
+		actualFunc := actualNames[i]
+		if expectedFunc != actualFunc {
+			expectedFmt = expectedFunc
+			actualFmt = actualFunc
+			return
+		}
+
+		ot := reflect.TypeOf(expectedOpt)
+		var expectedValues []reflect.Value
+		var actualValues []reflect.Value
+		if ot.NumIn() == 0 {
+			return
+		}
+
+		for i := 0; i < ot.NumIn(); i++ {
+			vt := ot.In(i).Elem()
+			expectedValues = append(expectedValues, reflect.New(vt))
+			actualValues = append(actualValues, reflect.New(vt))
+		}
+
+		reflect.ValueOf(expectedOpt).Call(expectedValues)
+		reflect.ValueOf(actualOpt).Call(actualValues)
+
+		for i := 0; i < ot.NumIn(); i++ {
+			if !assert.ObjectsAreEqual(expectedValues[i].Interface(), actualValues[i].Interface()) {
+				expectedFmt = fmt.Sprintf("%s %+v", expectedNames[i], expectedValues[i].Interface())
+				actualFmt = fmt.Sprintf("%s %+v", expectedNames[i], actualValues[i].Interface())
+				return
+			}
+		}
+	}
+
+	return "", ""
+}
+
+func funcName(opt interface{}) string {
+	n := runtime.FuncForPC(reflect.ValueOf(opt).Pointer()).Name()
+	return strings.TrimSuffix(path.Base(n), path.Ext(n))
+}

vendor/github.com/stretchr/testify/require/doc.go

@@ -1,24 +1,25 @@
 // Package require implements the same assertions as the `assert` package but
 // stops test execution when a test fails.
 //
-// Example Usage
+// # Example Usage
 //
 // The following is a complete example using require in a standard test function:
-//    import (
-//      "testing"
-//      "github.com/stretchr/testify/require"
-//    )
 //
-//    func TestSomething(t *testing.T) {
+//	import (
+//	  "testing"
+//	  "github.com/stretchr/testify/require"
+//	)
 //
-//      var a string = "Hello"
+//	func TestSomething(t *testing.T) {
-//      var b string = "Hello"
 //
-//      require.Equal(t, a, b, "The two words should be the same.")
+//	  var a string = "Hello"
+//	  var b string = "Hello"
 //
-//    }
+//	  require.Equal(t, a, b, "The two words should be the same.")
 //
-// Assertions
+//	}
+//
+// # Assertions
 //
 // The `require` package have same global functions as in the `assert` package,
 // but instead of returning a boolean result they call `t.FailNow()`.

vendor/go.opentelemetry.io/otel/.codespellignore

@@ -0,0 +1,5 @@
+ot
+fo
+te
+collison
+consequentially

vendor/go.opentelemetry.io/otel/.codespellrc

@@ -0,0 +1,10 @@
+# https://github.com/codespell-project/codespell
+[codespell]
+builtin = clear,rare,informal
+check-filenames =
+check-hidden =
+ignore-words = .codespellignore
+interactive = 1
+skip = .git,go.mod,go.sum,semconv,venv,.tools
+uri-ignore-words-list = *
+write =

vendor/go.opentelemetry.io/otel/.gitignore

@@ -2,6 +2,7 @@
 Thumbs.db
 
 .tools/
+venv/
 .idea/
 .vscode/
 *.iml

vendor/go.opentelemetry.io/otel/.golangci.yml

@@ -113,7 +113,7 @@ linters-settings:
       - name: constant-logical-expr
         disabled: false
       # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#context-as-argument
-      # TODO (#3372) reenable linter when it is compatible. https://github.com/golangci/golangci-lint/issues/3280
+      # TODO (#3372) re-enable linter when it is compatible. https://github.com/golangci/golangci-lint/issues/3280
       - name: context-as-argument
         disabled: true
         arguments:

vendor/go.opentelemetry.io/otel/CHANGELOG.md

@@ -8,6 +8,55 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
+## [1.16.0/0.39.0] 2023-05-18
+
+This release contains the first stable release of the OpenTelemetry Go [metric API].
+Our project stability guarantees now apply to the `go.opentelemetry.io/otel/metric` package.
+See our [versioning policy](VERSIONING.md) for more information about these stability guarantees.
+
+### Added
+
+- The `go.opentelemetry.io/otel/semconv/v1.19.0` package.
+  The package contains semantic conventions from the `v1.19.0` version of the OpenTelemetry specification. (#3848)
+- The `go.opentelemetry.io/otel/semconv/v1.20.0` package.
+  The package contains semantic conventions from the `v1.20.0` version of the OpenTelemetry specification. (#4078)
+
+### Changed
+
+- Use `strings.Cut()` instead of `string.SplitN()` for better readability and memory use. (#4049)
+
+### Removed
+
+- The deprecated `go.opentelemetry.io/otel/metric/instrument` package is removed.
+  Use `go.opentelemetry.io/otel/metric` instead. (#4055)
+
+### Fixed
+
+- Fix build for BSD based systems in `go.opentelemetry.io/otel/sdk/resource`. (#4077)
+
+## [1.16.0-rc.1/0.39.0-rc.1] 2023-05-03
+
+This is a release candidate for the v1.16.0/v0.39.0 release.
+That release is expected to include the `v1` release of the OpenTelemetry Go metric API and will provide stability guarantees of that API.
+See our [versioning policy](VERSIONING.md) for more information about these stability guarantees.
+
+### Added
+
+- Support global `MeterProvider` in `go.opentelemetry.io/otel`. (#4039)
+  - Use `Meter` for a `metric.Meter` from the global `metric.MeterProvider`.
+  - Use `GetMeterProivder` for a global `metric.MeterProvider`.
+  - Use `SetMeterProivder` to set the global `metric.MeterProvider`.
+
+### Changed
+
+- Move the `go.opentelemetry.io/otel/metric` module to the `stable-v1` module set.
+  This stages the metric API to be released as a stable module. (#4038)
+
+### Removed
+
+- The `go.opentelemetry.io/otel/metric/global` package is removed.
+  Use `go.opentelemetry.io/otel` instead. (#4039)
+
 ## [1.15.1/0.38.1] 2023-05-02
 
 ### Fixed
@@ -2443,7 +2492,9 @@ It contains api and sdk for trace and meter.
 - CircleCI build CI manifest files.
 - CODEOWNERS file to track owners of this project.
 
-[Unreleased]: https://github.com/open-telemetry/opentelemetry-go/compare/v1.15.1...HEAD
+[Unreleased]: https://github.com/open-telemetry/opentelemetry-go/compare/v1.16.0...HEAD
+[1.16.0/0.39.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.16.0
+[1.16.0-rc.1/0.39.0-rc.1]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.16.0-rc.1
 [1.15.1/0.38.1]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.15.1
 [1.15.0/0.38.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.15.0
 [1.15.0-rc.2/0.38.0-rc.2]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.15.0-rc.2
@@ -2512,3 +2563,5 @@ It contains api and sdk for trace and meter.
 [Go 1.20]: https://go.dev/doc/go1.20
 [Go 1.19]: https://go.dev/doc/go1.19
 [Go 1.18]: https://go.dev/doc/go1.18
+
+[metric API]:https://pkg.go.dev/go.opentelemetry.io/otel/metric

vendor/go.opentelemetry.io/otel/CONTRIBUTING.md

@@ -28,6 +28,11 @@ precommit` - the `precommit` target is the default).
 The `precommit` target also fixes the formatting of the code and
 checks the status of the go module files.
 
+Additionally, there is a `codespell` target that checks for common
+typos in the code. It is not run by default, but you can run it
+manually with `make codespell`. It will set up a virtual environment
+in `venv` and install `codespell` there.
+
 If after running `make precommit` the output of `git status` contains
 `nothing to commit, working tree clean` then it means that everything
 is up-to-date and properly formatted.
@@ -150,10 +155,10 @@ Any [Maintainer] can merge the PR once the above criteria have been met.
 ## Design Choices
 
 As with other OpenTelemetry clients, opentelemetry-go follows the
-[opentelemetry-specification](https://github.com/open-telemetry/opentelemetry-specification).
+[OpenTelemetry Specification](https://opentelemetry.io/docs/specs/otel).
 
 It's especially valuable to read through the [library
-guidelines](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/library-guidelines.md).
+guidelines](https://opentelemetry.io/docs/specs/otel/library-guidelines).
 
 ### Focus on Capabilities, Not Structure Compliance
 

vendor/go.opentelemetry.io/otel/Makefile

@@ -25,8 +25,8 @@ TIMEOUT = 60
 .DEFAULT_GOAL := precommit
 
 .PHONY: precommit ci
-precommit: dependabot-generate license-check vanity-import-fix misspell go-mod-tidy golangci-lint-fix test-default
+precommit: generate dependabot-generate license-check vanity-import-fix misspell go-mod-tidy golangci-lint-fix test-default
-ci: dependabot-check license-check lint vanity-import-check build test-default check-clean-work-tree test-coverage
+ci: generate dependabot-check license-check lint vanity-import-check build test-default check-clean-work-tree test-coverage
 
 # Tools
 
@@ -74,9 +74,42 @@ $(TOOLS)/gojq: PACKAGE=github.com/itchyny/gojq/cmd/gojq
 .PHONY: tools
 tools: $(CROSSLINK) $(DBOTCONF) $(GOLANGCI_LINT) $(MISSPELL) $(GOCOVMERGE) $(STRINGER) $(PORTO) $(GOJQ) $(SEMCONVGEN) $(MULTIMOD) $(SEMCONVKIT)
 
-# Build
+# Virtualized python tools via docker
 
-.PHONY: generate build
+# The directory where the virtual environment is created.
+VENVDIR := venv
+
+# The directory where the python tools are installed.
+PYTOOLS := $(VENVDIR)/bin
+
+# The pip executable in the virtual environment.
+PIP := $(PYTOOLS)/pip
+
+# The directory in the docker image where the current directory is mounted.
+WORKDIR := /workdir
+
+# The python image to use for the virtual environment.
+PYTHONIMAGE := python:3.11.3-slim-bullseye
+
+# Run the python image with the current directory mounted.
+DOCKERPY := docker run --rm -v "$(CURDIR):$(WORKDIR)" -w $(WORKDIR) $(PYTHONIMAGE)
+
+# Create a virtual environment for Python tools.
+$(PYTOOLS):
+# The `--upgrade` flag is needed to ensure that the virtual environment is
+# created with the latest pip version.
+	@$(DOCKERPY) bash -c "python3 -m venv $(VENVDIR) && $(PIP) install --upgrade pip"
+
+# Install python packages into the virtual environment.
+$(PYTOOLS)/%: | $(PYTOOLS)
+	@$(DOCKERPY) $(PIP) install -r requirements.txt
+
+CODESPELL = $(PYTOOLS)/codespell
+$(CODESPELL): PACKAGE=codespell
+
+# Generate
+
+.PHONY: generate
 
 generate: $(OTEL_GO_MOD_DIRS:%=generate/%)
 generate/%: DIR=$*
@@ -85,7 +118,11 @@ generate/%: | $(STRINGER) $(PORTO)
 		&& cd $(DIR) \
 		&& PATH="$(TOOLS):$${PATH}" $(GO) generate ./... && $(PORTO) -w .
 
-build: generate $(OTEL_GO_MOD_DIRS:%=build/%) $(OTEL_GO_MOD_DIRS:%=build-tests/%)
+# Build
+
+.PHONY: build
+
+build: $(OTEL_GO_MOD_DIRS:%=build/%) $(OTEL_GO_MOD_DIRS:%=build-tests/%)
 build/%: DIR=$*
 build/%:
 	@echo "$(GO) build $(DIR)/..." \
@@ -176,6 +213,10 @@ vanity-import-fix: | $(PORTO)
 misspell: | $(MISSPELL)
 	@$(MISSPELL) -w $(ALL_DOCS)
 
+.PHONY: codespell
+codespell: | $(CODESPELL)
+	@$(DOCKERPY) $(CODESPELL)
+
 .PHONY: license-check
 license-check:
 	@licRes=$$(for f in $$(find . -type f \( -iname '*.go' -o -iname '*.sh' \) ! -path '**/third_party/*' ! -path './.git/*' ) ; do \
@@ -211,6 +252,7 @@ semconv-generate: | $(SEMCONVGEN) $(SEMCONVKIT)
 	[ "$(TAG)" ] || ( echo "TAG unset: missing opentelemetry specification tag"; exit 1 )
 	[ "$(OTEL_SPEC_REPO)" ] || ( echo "OTEL_SPEC_REPO unset: missing path to opentelemetry specification repo"; exit 1 )
 	$(SEMCONVGEN) -i "$(OTEL_SPEC_REPO)/semantic_conventions/." --only=span -p conventionType=trace -f trace.go -t "$(SEMCONVPKG)/template.j2" -s "$(TAG)"
+	$(SEMCONVGEN) -i "$(OTEL_SPEC_REPO)/semantic_conventions/." --only=attribute_group -p conventionType=trace -f attribute_group.go -t "$(SEMCONVPKG)/template.j2" -s "$(TAG)"
 	$(SEMCONVGEN) -i "$(OTEL_SPEC_REPO)/semantic_conventions/." --only=event -p conventionType=event -f event.go -t "$(SEMCONVPKG)/template.j2" -s "$(TAG)"
 	$(SEMCONVGEN) -i "$(OTEL_SPEC_REPO)/semantic_conventions/." --only=resource -p conventionType=resource -f resource.go -t "$(SEMCONVPKG)/template.j2" -s "$(TAG)"
 	$(SEMCONVKIT) -output "$(SEMCONVPKG)/$(TAG)" -tag "$(TAG)"

vendor/go.opentelemetry.io/otel/RELEASING.md

@@ -2,10 +2,10 @@
 
 ## Semantic Convention Generation
 
-New versions of the [OpenTelemetry specification] mean new versions of the `semconv` package need to be generated.
+New versions of the [OpenTelemetry Specification] mean new versions of the `semconv` package need to be generated.
 The `semconv-generate` make target is used for this.
 
-1. Checkout a local copy of the [OpenTelemetry specification] to the desired release tag.
+1. Checkout a local copy of the [OpenTelemetry Specification] to the desired release tag.
 2. Pull the latest `otel/semconvgen` image: `docker pull otel/semconvgen:latest`
 3. Run the `make semconv-generate ...` target from this repository.
 
@@ -14,7 +14,6 @@ For example,
 ```sh
 export TAG="v1.13.0" # Change to the release version you are generating.
 export OTEL_SPEC_REPO="/absolute/path/to/opentelemetry-specification"
-git -C "$OTEL_SPEC_REPO" checkout "tags/$TAG" -b "$TAG"
 docker pull otel/semconvgen:latest
 make semconv-generate # Uses the exported TAG and OTEL_SPEC_REPO.
 ```
@@ -124,4 +123,4 @@ Once verified be sure to [make a release for the `contrib` repository](https://g
 Update [the documentation](./website_docs) for [the OpenTelemetry website](https://opentelemetry.io/docs/go/).
 Importantly, bump any package versions referenced to be the latest one you just released and ensure all code examples still compile and are accurate.
 
-[OpenTelemetry specification]: https://github.com/open-telemetry/opentelemetry-specification
+[OpenTelemetry Specification]: https://github.com/open-telemetry/opentelemetry-specification

vendor/go.opentelemetry.io/otel/baggage/baggage.go

@@ -289,45 +289,37 @@ func parseMember(member string) (Member, error) {
 		props      properties
 	)
 
-	parts := strings.SplitN(member, propertyDelimiter, 2)
+	keyValue, properties, found := strings.Cut(member, propertyDelimiter)
-	switch len(parts) {
+	if found {
-	case 2:
 		// Parse the member properties.
-		for _, pStr := range strings.Split(parts[1], propertyDelimiter) {
+		for _, pStr := range strings.Split(properties, propertyDelimiter) {
 			p, err := parseProperty(pStr)
 			if err != nil {
 				return newInvalidMember(), err
 			}
 			props = append(props, p)
 		}
-		fallthrough
+	}
-	case 1:
+	// Parse the member key/value pair.
-		// Parse the member key/value pair.
 
-		// Take into account a value can contain equal signs (=).
+	// Take into account a value can contain equal signs (=).
-		kv := strings.SplitN(parts[0], keyValueDelimiter, 2)
+	k, v, found := strings.Cut(keyValue, keyValueDelimiter)
-		if len(kv) != 2 {
+	if !found {
-			return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidMember, member)
+		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidMember, member)
-		}
+	}
-		// "Leading and trailing whitespaces are allowed but MUST be trimmed
+	// "Leading and trailing whitespaces are allowed but MUST be trimmed
-		// when converting the header into a data structure."
+	// when converting the header into a data structure."
-		key = strings.TrimSpace(kv[0])
+	key = strings.TrimSpace(k)
-		var err error
+	var err error
-		value, err = url.QueryUnescape(strings.TrimSpace(kv[1]))
+	value, err = url.QueryUnescape(strings.TrimSpace(v))
-		if err != nil {
+	if err != nil {
-			return newInvalidMember(), fmt.Errorf("%w: %q", err, value)
+		return newInvalidMember(), fmt.Errorf("%w: %q", err, value)
-		}
+	}
-		if !keyRe.MatchString(key) {
+	if !keyRe.MatchString(key) {
-			return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidKey, key)
+		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidKey, key)
-		}
+	}
-		if !valueRe.MatchString(value) {
+	if !valueRe.MatchString(value) {
-			return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidValue, value)
+		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidValue, value)
-		}
-	default:
-		// This should never happen unless a developer has changed the string
-		// splitting somehow. Panic instead of failing silently and allowing
-		// the bug to slip past the CI checks.
-		panic("failed to parse baggage member")
 	}
 
 	return Member{key: key, value: value, properties: props, hasData: true}, nil

vendor/go.opentelemetry.io/otel/codes/doc.go

@@ -16,6 +16,6 @@
 Package codes defines the canonical error codes used by OpenTelemetry.
 
 It conforms to [the OpenTelemetry
-specification](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#statuscanonicalcode).
+specification](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/trace/api.md#set-status).
 */
 package codes // import "go.opentelemetry.io/otel/codes"

vendor/go.opentelemetry.io/otel/exporters/otlp/internal/envconfig/envconfig.go

@@ -166,20 +166,20 @@ func stringToHeader(value string) map[string]string {
 	headers := make(map[string]string)
 
 	for _, header := range headersPairs {
-		nameValue := strings.SplitN(header, "=", 2)
+		n, v, found := strings.Cut(header, "=")
-		if len(nameValue) < 2 {
+		if !found {
-			global.Error(errors.New("missing '="), "parse headers", "input", nameValue)
+			global.Error(errors.New("missing '="), "parse headers", "input", header)
 			continue
 		}
-		name, err := url.QueryUnescape(nameValue[0])
+		name, err := url.QueryUnescape(n)
 		if err != nil {
-			global.Error(err, "escape header key", "key", nameValue[0])
+			global.Error(err, "escape header key", "key", n)
 			continue
 		}
 		trimmedName := strings.TrimSpace(name)
-		value, err := url.QueryUnescape(nameValue[1])
+		value, err := url.QueryUnescape(v)
 		if err != nil {
-			global.Error(err, "escape header value", "value", nameValue[1])
+			global.Error(err, "escape header value", "value", v)
 			continue
 		}
 		trimmedValue := strings.TrimSpace(value)

vendor/go.opentelemetry.io/otel/internal/global/instruments.go

@@ -0,0 +1,359 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package global // import "go.opentelemetry.io/otel/internal/global"
+
+import (
+	"context"
+	"sync/atomic"
+
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/metric/embedded"
+)
+
+// unwrapper unwraps to return the underlying instrument implementation.
+type unwrapper interface {
+	Unwrap() metric.Observable
+}
+
+type afCounter struct {
+	embedded.Float64ObservableCounter
+	metric.Float64Observable
+
+	name string
+	opts []metric.Float64ObservableCounterOption
+
+	delegate atomic.Value //metric.Float64ObservableCounter
+}
+
+var _ unwrapper = (*afCounter)(nil)
+var _ metric.Float64ObservableCounter = (*afCounter)(nil)
+
+func (i *afCounter) setDelegate(m metric.Meter) {
+	ctr, err := m.Float64ObservableCounter(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *afCounter) Unwrap() metric.Observable {
+	if ctr := i.delegate.Load(); ctr != nil {
+		return ctr.(metric.Float64ObservableCounter)
+	}
+	return nil
+}
+
+type afUpDownCounter struct {
+	embedded.Float64ObservableUpDownCounter
+	metric.Float64Observable
+
+	name string
+	opts []metric.Float64ObservableUpDownCounterOption
+
+	delegate atomic.Value //metric.Float64ObservableUpDownCounter
+}
+
+var _ unwrapper = (*afUpDownCounter)(nil)
+var _ metric.Float64ObservableUpDownCounter = (*afUpDownCounter)(nil)
+
+func (i *afUpDownCounter) setDelegate(m metric.Meter) {
+	ctr, err := m.Float64ObservableUpDownCounter(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *afUpDownCounter) Unwrap() metric.Observable {
+	if ctr := i.delegate.Load(); ctr != nil {
+		return ctr.(metric.Float64ObservableUpDownCounter)
+	}
+	return nil
+}
+
+type afGauge struct {
+	embedded.Float64ObservableGauge
+	metric.Float64Observable
+
+	name string
+	opts []metric.Float64ObservableGaugeOption
+
+	delegate atomic.Value //metric.Float64ObservableGauge
+}
+
+var _ unwrapper = (*afGauge)(nil)
+var _ metric.Float64ObservableGauge = (*afGauge)(nil)
+
+func (i *afGauge) setDelegate(m metric.Meter) {
+	ctr, err := m.Float64ObservableGauge(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *afGauge) Unwrap() metric.Observable {
+	if ctr := i.delegate.Load(); ctr != nil {
+		return ctr.(metric.Float64ObservableGauge)
+	}
+	return nil
+}
+
+type aiCounter struct {
+	embedded.Int64ObservableCounter
+	metric.Int64Observable
+
+	name string
+	opts []metric.Int64ObservableCounterOption
+
+	delegate atomic.Value //metric.Int64ObservableCounter
+}
+
+var _ unwrapper = (*aiCounter)(nil)
+var _ metric.Int64ObservableCounter = (*aiCounter)(nil)
+
+func (i *aiCounter) setDelegate(m metric.Meter) {
+	ctr, err := m.Int64ObservableCounter(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *aiCounter) Unwrap() metric.Observable {
+	if ctr := i.delegate.Load(); ctr != nil {
+		return ctr.(metric.Int64ObservableCounter)
+	}
+	return nil
+}
+
+type aiUpDownCounter struct {
+	embedded.Int64ObservableUpDownCounter
+	metric.Int64Observable
+
+	name string
+	opts []metric.Int64ObservableUpDownCounterOption
+
+	delegate atomic.Value //metric.Int64ObservableUpDownCounter
+}
+
+var _ unwrapper = (*aiUpDownCounter)(nil)
+var _ metric.Int64ObservableUpDownCounter = (*aiUpDownCounter)(nil)
+
+func (i *aiUpDownCounter) setDelegate(m metric.Meter) {
+	ctr, err := m.Int64ObservableUpDownCounter(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *aiUpDownCounter) Unwrap() metric.Observable {
+	if ctr := i.delegate.Load(); ctr != nil {
+		return ctr.(metric.Int64ObservableUpDownCounter)
+	}
+	return nil
+}
+
+type aiGauge struct {
+	embedded.Int64ObservableGauge
+	metric.Int64Observable
+
+	name string
+	opts []metric.Int64ObservableGaugeOption
+
+	delegate atomic.Value //metric.Int64ObservableGauge
+}
+
+var _ unwrapper = (*aiGauge)(nil)
+var _ metric.Int64ObservableGauge = (*aiGauge)(nil)
+
+func (i *aiGauge) setDelegate(m metric.Meter) {
+	ctr, err := m.Int64ObservableGauge(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *aiGauge) Unwrap() metric.Observable {
+	if ctr := i.delegate.Load(); ctr != nil {
+		return ctr.(metric.Int64ObservableGauge)
+	}
+	return nil
+}
+
+// Sync Instruments.
+type sfCounter struct {
+	embedded.Float64Counter
+
+	name string
+	opts []metric.Float64CounterOption
+
+	delegate atomic.Value //metric.Float64Counter
+}
+
+var _ metric.Float64Counter = (*sfCounter)(nil)
+
+func (i *sfCounter) setDelegate(m metric.Meter) {
+	ctr, err := m.Float64Counter(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *sfCounter) Add(ctx context.Context, incr float64, opts ...metric.AddOption) {
+	if ctr := i.delegate.Load(); ctr != nil {
+		ctr.(metric.Float64Counter).Add(ctx, incr, opts...)
+	}
+}
+
+type sfUpDownCounter struct {
+	embedded.Float64UpDownCounter
+
+	name string
+	opts []metric.Float64UpDownCounterOption
+
+	delegate atomic.Value //metric.Float64UpDownCounter
+}
+
+var _ metric.Float64UpDownCounter = (*sfUpDownCounter)(nil)
+
+func (i *sfUpDownCounter) setDelegate(m metric.Meter) {
+	ctr, err := m.Float64UpDownCounter(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *sfUpDownCounter) Add(ctx context.Context, incr float64, opts ...metric.AddOption) {
+	if ctr := i.delegate.Load(); ctr != nil {
+		ctr.(metric.Float64UpDownCounter).Add(ctx, incr, opts...)
+	}
+}
+
+type sfHistogram struct {
+	embedded.Float64Histogram
+
+	name string
+	opts []metric.Float64HistogramOption
+
+	delegate atomic.Value //metric.Float64Histogram
+}
+
+var _ metric.Float64Histogram = (*sfHistogram)(nil)
+
+func (i *sfHistogram) setDelegate(m metric.Meter) {
+	ctr, err := m.Float64Histogram(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *sfHistogram) Record(ctx context.Context, x float64, opts ...metric.RecordOption) {
+	if ctr := i.delegate.Load(); ctr != nil {
+		ctr.(metric.Float64Histogram).Record(ctx, x, opts...)
+	}
+}
+
+type siCounter struct {
+	embedded.Int64Counter
+
+	name string
+	opts []metric.Int64CounterOption
+
+	delegate atomic.Value //metric.Int64Counter
+}
+
+var _ metric.Int64Counter = (*siCounter)(nil)
+
+func (i *siCounter) setDelegate(m metric.Meter) {
+	ctr, err := m.Int64Counter(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *siCounter) Add(ctx context.Context, x int64, opts ...metric.AddOption) {
+	if ctr := i.delegate.Load(); ctr != nil {
+		ctr.(metric.Int64Counter).Add(ctx, x, opts...)
+	}
+}
+
+type siUpDownCounter struct {
+	embedded.Int64UpDownCounter
+
+	name string
+	opts []metric.Int64UpDownCounterOption
+
+	delegate atomic.Value //metric.Int64UpDownCounter
+}
+
+var _ metric.Int64UpDownCounter = (*siUpDownCounter)(nil)
+
+func (i *siUpDownCounter) setDelegate(m metric.Meter) {
+	ctr, err := m.Int64UpDownCounter(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *siUpDownCounter) Add(ctx context.Context, x int64, opts ...metric.AddOption) {
+	if ctr := i.delegate.Load(); ctr != nil {
+		ctr.(metric.Int64UpDownCounter).Add(ctx, x, opts...)
+	}
+}
+
+type siHistogram struct {
+	embedded.Int64Histogram
+
+	name string
+	opts []metric.Int64HistogramOption
+
+	delegate atomic.Value //metric.Int64Histogram
+}
+
+var _ metric.Int64Histogram = (*siHistogram)(nil)
+
+func (i *siHistogram) setDelegate(m metric.Meter) {
+	ctr, err := m.Int64Histogram(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *siHistogram) Record(ctx context.Context, x int64, opts ...metric.RecordOption) {
+	if ctr := i.delegate.Load(); ctr != nil {
+		ctr.(metric.Int64Histogram).Record(ctx, x, opts...)
+	}
+}

vendor/go.opentelemetry.io/otel/internal/global/meter.go

@@ -0,0 +1,354 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package global // import "go.opentelemetry.io/otel/internal/global"
+
+import (
+	"container/list"
+	"sync"
+	"sync/atomic"
+
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/metric/embedded"
+)
+
+// meterProvider is a placeholder for a configured SDK MeterProvider.
+//
+// All MeterProvider functionality is forwarded to a delegate once
+// configured.
+type meterProvider struct {
+	embedded.MeterProvider
+
+	mtx    sync.Mutex
+	meters map[il]*meter
+
+	delegate metric.MeterProvider
+}
+
+// setDelegate configures p to delegate all MeterProvider functionality to
+// provider.
+//
+// All Meters provided prior to this function call are switched out to be
+// Meters provided by provider. All instruments and callbacks are recreated and
+// delegated.
+//
+// It is guaranteed by the caller that this happens only once.
+func (p *meterProvider) setDelegate(provider metric.MeterProvider) {
+	p.mtx.Lock()
+	defer p.mtx.Unlock()
+
+	p.delegate = provider
+
+	if len(p.meters) == 0 {
+		return
+	}
+
+	for _, meter := range p.meters {
+		meter.setDelegate(provider)
+	}
+
+	p.meters = nil
+}
+
+// Meter implements MeterProvider.
+func (p *meterProvider) Meter(name string, opts ...metric.MeterOption) metric.Meter {
+	p.mtx.Lock()
+	defer p.mtx.Unlock()
+
+	if p.delegate != nil {
+		return p.delegate.Meter(name, opts...)
+	}
+
+	// At this moment it is guaranteed that no sdk is installed, save the meter in the meters map.
+
+	c := metric.NewMeterConfig(opts...)
+	key := il{
+		name:    name,
+		version: c.InstrumentationVersion(),
+	}
+
+	if p.meters == nil {
+		p.meters = make(map[il]*meter)
+	}
+
+	if val, ok := p.meters[key]; ok {
+		return val
+	}
+
+	t := &meter{name: name, opts: opts}
+	p.meters[key] = t
+	return t
+}
+
+// meter is a placeholder for a metric.Meter.
+//
+// All Meter functionality is forwarded to a delegate once configured.
+// Otherwise, all functionality is forwarded to a NoopMeter.
+type meter struct {
+	embedded.Meter
+
+	name string
+	opts []metric.MeterOption
+
+	mtx         sync.Mutex
+	instruments []delegatedInstrument
+
+	registry list.List
+
+	delegate atomic.Value // metric.Meter
+}
+
+type delegatedInstrument interface {
+	setDelegate(metric.Meter)
+}
+
+// setDelegate configures m to delegate all Meter functionality to Meters
+// created by provider.
+//
+// All subsequent calls to the Meter methods will be passed to the delegate.
+//
+// It is guaranteed by the caller that this happens only once.
+func (m *meter) setDelegate(provider metric.MeterProvider) {
+	meter := provider.Meter(m.name, m.opts...)
+	m.delegate.Store(meter)
+
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+
+	for _, inst := range m.instruments {
+		inst.setDelegate(meter)
+	}
+
+	for e := m.registry.Front(); e != nil; e = e.Next() {
+		r := e.Value.(*registration)
+		r.setDelegate(meter)
+		m.registry.Remove(e)
+	}
+
+	m.instruments = nil
+	m.registry.Init()
+}
+
+func (m *meter) Int64Counter(name string, options ...metric.Int64CounterOption) (metric.Int64Counter, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Int64Counter(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &siCounter{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Int64UpDownCounter(name string, options ...metric.Int64UpDownCounterOption) (metric.Int64UpDownCounter, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Int64UpDownCounter(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &siUpDownCounter{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Int64Histogram(name string, options ...metric.Int64HistogramOption) (metric.Int64Histogram, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Int64Histogram(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &siHistogram{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Int64ObservableCounter(name string, options ...metric.Int64ObservableCounterOption) (metric.Int64ObservableCounter, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Int64ObservableCounter(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &aiCounter{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Int64ObservableUpDownCounter(name string, options ...metric.Int64ObservableUpDownCounterOption) (metric.Int64ObservableUpDownCounter, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Int64ObservableUpDownCounter(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &aiUpDownCounter{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Int64ObservableGauge(name string, options ...metric.Int64ObservableGaugeOption) (metric.Int64ObservableGauge, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Int64ObservableGauge(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &aiGauge{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Float64Counter(name string, options ...metric.Float64CounterOption) (metric.Float64Counter, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Float64Counter(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &sfCounter{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Float64UpDownCounter(name string, options ...metric.Float64UpDownCounterOption) (metric.Float64UpDownCounter, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Float64UpDownCounter(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &sfUpDownCounter{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Float64Histogram(name string, options ...metric.Float64HistogramOption) (metric.Float64Histogram, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Float64Histogram(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &sfHistogram{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Float64ObservableCounter(name string, options ...metric.Float64ObservableCounterOption) (metric.Float64ObservableCounter, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Float64ObservableCounter(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &afCounter{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Float64ObservableUpDownCounter(name string, options ...metric.Float64ObservableUpDownCounterOption) (metric.Float64ObservableUpDownCounter, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Float64ObservableUpDownCounter(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &afUpDownCounter{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+func (m *meter) Float64ObservableGauge(name string, options ...metric.Float64ObservableGaugeOption) (metric.Float64ObservableGauge, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		return del.Float64ObservableGauge(name, options...)
+	}
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	i := &afGauge{name: name, opts: options}
+	m.instruments = append(m.instruments, i)
+	return i, nil
+}
+
+// RegisterCallback captures the function that will be called during Collect.
+func (m *meter) RegisterCallback(f metric.Callback, insts ...metric.Observable) (metric.Registration, error) {
+	if del, ok := m.delegate.Load().(metric.Meter); ok {
+		insts = unwrapInstruments(insts)
+		return del.RegisterCallback(f, insts...)
+	}
+
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+
+	reg := &registration{instruments: insts, function: f}
+	e := m.registry.PushBack(reg)
+	reg.unreg = func() error {
+		m.mtx.Lock()
+		_ = m.registry.Remove(e)
+		m.mtx.Unlock()
+		return nil
+	}
+	return reg, nil
+}
+
+type wrapped interface {
+	unwrap() metric.Observable
+}
+
+func unwrapInstruments(instruments []metric.Observable) []metric.Observable {
+	out := make([]metric.Observable, 0, len(instruments))
+
+	for _, inst := range instruments {
+		if in, ok := inst.(wrapped); ok {
+			out = append(out, in.unwrap())
+		} else {
+			out = append(out, inst)
+		}
+	}
+
+	return out
+}
+
+type registration struct {
+	embedded.Registration
+
+	instruments []metric.Observable
+	function    metric.Callback
+
+	unreg   func() error
+	unregMu sync.Mutex
+}
+
+func (c *registration) setDelegate(m metric.Meter) {
+	insts := unwrapInstruments(c.instruments)
+
+	c.unregMu.Lock()
+	defer c.unregMu.Unlock()
+
+	if c.unreg == nil {
+		// Unregister already called.
+		return
+	}
+
+	reg, err := m.RegisterCallback(c.function, insts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+	}
+
+	c.unreg = reg.Unregister
+}
+
+func (c *registration) Unregister() error {
+	c.unregMu.Lock()
+	defer c.unregMu.Unlock()
+	if c.unreg == nil {
+		// Unregister already called.
+		return nil
+	}
+
+	var err error
+	err, c.unreg = c.unreg(), nil
+	return err
+}

vendor/go.opentelemetry.io/otel/internal/global/state.go

@@ -19,6 +19,7 @@ import (
 	"sync"
 	"sync/atomic"
 
+	"go.opentelemetry.io/otel/metric"
 	"go.opentelemetry.io/otel/propagation"
 	"go.opentelemetry.io/otel/trace"
 )
@@ -31,14 +32,20 @@ type (
 	propagatorsHolder struct {
 		tm propagation.TextMapPropagator
 	}
+
+	meterProviderHolder struct {
+		mp metric.MeterProvider
+	}
 )
 
 var (
-	globalTracer      = defaultTracerValue()
+	globalTracer        = defaultTracerValue()
-	globalPropagators = defaultPropagatorsValue()
+	globalPropagators   = defaultPropagatorsValue()
+	globalMeterProvider = defaultMeterProvider()
 
 	delegateTraceOnce             sync.Once
 	delegateTextMapPropagatorOnce sync.Once
+	delegateMeterOnce             sync.Once
 )
 
 // TracerProvider is the internal implementation for global.TracerProvider.
@@ -102,6 +109,34 @@ func SetTextMapPropagator(p propagation.TextMapPropagator) {
 	globalPropagators.Store(propagatorsHolder{tm: p})
 }
 
+// MeterProvider is the internal implementation for global.MeterProvider.
+func MeterProvider() metric.MeterProvider {
+	return globalMeterProvider.Load().(meterProviderHolder).mp
+}
+
+// SetMeterProvider is the internal implementation for global.SetMeterProvider.
+func SetMeterProvider(mp metric.MeterProvider) {
+	current := MeterProvider()
+	if _, cOk := current.(*meterProvider); cOk {
+		if _, mpOk := mp.(*meterProvider); mpOk && current == mp {
+			// Do not assign the default delegating MeterProvider to delegate
+			// to itself.
+			Error(
+				errors.New("no delegate configured in meter provider"),
+				"Setting meter provider to it's current value. No delegate will be configured",
+			)
+			return
+		}
+	}
+
+	delegateMeterOnce.Do(func() {
+		if def, ok := current.(*meterProvider); ok {
+			def.setDelegate(mp)
+		}
+	})
+	globalMeterProvider.Store(meterProviderHolder{mp: mp})
+}
+
 func defaultTracerValue() *atomic.Value {
 	v := &atomic.Value{}
 	v.Store(tracerProviderHolder{tp: &tracerProvider{}})
@@ -113,3 +148,9 @@ func defaultPropagatorsValue() *atomic.Value {
 	v.Store(propagatorsHolder{tm: newTextMapPropagator()})
 	return v
 }
+
+func defaultMeterProvider() *atomic.Value {
+	v := &atomic.Value{}
+	v.Store(meterProviderHolder{mp: &meterProvider{}})
+	return v
+}

vendor/go.opentelemetry.io/otel/metric.go

@@ -0,0 +1,53 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package otel // import "go.opentelemetry.io/otel"
+
+import (
+	"go.opentelemetry.io/otel/internal/global"
+	"go.opentelemetry.io/otel/metric"
+)
+
+// Meter returns a Meter from the global MeterProvider. The name must be the
+// name of the library providing instrumentation. This name may be the same as
+// the instrumented code only if that code provides built-in instrumentation.
+// If the name is empty, then a implementation defined default name will be
+// used instead.
+//
+// If this is called before a global MeterProvider is registered the returned
+// Meter will be a No-op implementation of a Meter. When a global MeterProvider
+// is registered for the first time, the returned Meter, and all the
+// instruments it has created or will create, are recreated automatically from
+// the new MeterProvider.
+//
+// This is short for GetMeterProvider().Meter(name).
+func Meter(name string, opts ...metric.MeterOption) metric.Meter {
+	return GetMeterProvider().Meter(name, opts...)
+}
+
+// GetMeterProvider returns the registered global meter provider.
+//
+// If no global GetMeterProvider has been registered, a No-op GetMeterProvider
+// implementation is returned. When a global GetMeterProvider is registered for
+// the first time, the returned GetMeterProvider, and all the Meters it has
+// created or will create, are recreated automatically from the new
+// GetMeterProvider.
+func GetMeterProvider() metric.MeterProvider {
+	return global.MeterProvider()
+}
+
+// SetMeterProvider registers mp as the global MeterProvider.
+func SetMeterProvider(mp metric.MeterProvider) {
+	global.SetMeterProvider(mp)
+}

vendor/go.opentelemetry.io/otel/metric/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/go.opentelemetry.io/otel/metric/asyncfloat64.go

@@ -0,0 +1,271 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metric // import "go.opentelemetry.io/otel/metric"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/metric/embedded"
+)
+
+// Float64Observable describes a set of instruments used asynchronously to
+// record float64 measurements once per collection cycle. Observations of
+// these instruments are only made within a callback.
+//
+// Warning: Methods may be added to this interface in minor releases.
+type Float64Observable interface {
+	Observable
+
+	float64Observable()
+}
+
+// Float64ObservableCounter is an instrument used to asynchronously record
+// increasing float64 measurements once per collection cycle. Observations are
+// only made within a callback for this instrument. The value observed is
+// assumed the to be the cumulative sum of the count.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for
+// unimplemented methods.
+type Float64ObservableCounter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Float64ObservableCounter
+
+	Float64Observable
+}
+
+// Float64ObservableCounterConfig contains options for asynchronous counter
+// instruments that record int64 values.
+type Float64ObservableCounterConfig struct {
+	description string
+	unit        string
+	callbacks   []Float64Callback
+}
+
+// NewFloat64ObservableCounterConfig returns a new
+// [Float64ObservableCounterConfig] with all opts applied.
+func NewFloat64ObservableCounterConfig(opts ...Float64ObservableCounterOption) Float64ObservableCounterConfig {
+	var config Float64ObservableCounterConfig
+	for _, o := range opts {
+		config = o.applyFloat64ObservableCounter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Float64ObservableCounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Float64ObservableCounterConfig) Unit() string {
+	return c.unit
+}
+
+// Callbacks returns the configured callbacks.
+func (c Float64ObservableCounterConfig) Callbacks() []Float64Callback {
+	return c.callbacks
+}
+
+// Float64ObservableCounterOption applies options to a
+// [Float64ObservableCounterConfig]. See [Float64ObservableOption] and
+// [InstrumentOption] for other options that can be used as a
+// Float64ObservableCounterOption.
+type Float64ObservableCounterOption interface {
+	applyFloat64ObservableCounter(Float64ObservableCounterConfig) Float64ObservableCounterConfig
+}
+
+// Float64ObservableUpDownCounter is an instrument used to asynchronously
+// record float64 measurements once per collection cycle. Observations are only
+// made within a callback for this instrument. The value observed is assumed
+// the to be the cumulative sum of the count.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Float64ObservableUpDownCounter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Float64ObservableUpDownCounter
+
+	Float64Observable
+}
+
+// Float64ObservableUpDownCounterConfig contains options for asynchronous
+// counter instruments that record int64 values.
+type Float64ObservableUpDownCounterConfig struct {
+	description string
+	unit        string
+	callbacks   []Float64Callback
+}
+
+// NewFloat64ObservableUpDownCounterConfig returns a new
+// [Float64ObservableUpDownCounterConfig] with all opts applied.
+func NewFloat64ObservableUpDownCounterConfig(opts ...Float64ObservableUpDownCounterOption) Float64ObservableUpDownCounterConfig {
+	var config Float64ObservableUpDownCounterConfig
+	for _, o := range opts {
+		config = o.applyFloat64ObservableUpDownCounter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Float64ObservableUpDownCounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Float64ObservableUpDownCounterConfig) Unit() string {
+	return c.unit
+}
+
+// Callbacks returns the configured callbacks.
+func (c Float64ObservableUpDownCounterConfig) Callbacks() []Float64Callback {
+	return c.callbacks
+}
+
+// Float64ObservableUpDownCounterOption applies options to a
+// [Float64ObservableUpDownCounterConfig]. See [Float64ObservableOption] and
+// [InstrumentOption] for other options that can be used as a
+// Float64ObservableUpDownCounterOption.
+type Float64ObservableUpDownCounterOption interface {
+	applyFloat64ObservableUpDownCounter(Float64ObservableUpDownCounterConfig) Float64ObservableUpDownCounterConfig
+}
+
+// Float64ObservableGauge is an instrument used to asynchronously record
+// instantaneous float64 measurements once per collection cycle. Observations
+// are only made within a callback for this instrument.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Float64ObservableGauge interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Float64ObservableGauge
+
+	Float64Observable
+}
+
+// Float64ObservableGaugeConfig contains options for asynchronous counter
+// instruments that record int64 values.
+type Float64ObservableGaugeConfig struct {
+	description string
+	unit        string
+	callbacks   []Float64Callback
+}
+
+// NewFloat64ObservableGaugeConfig returns a new [Float64ObservableGaugeConfig]
+// with all opts applied.
+func NewFloat64ObservableGaugeConfig(opts ...Float64ObservableGaugeOption) Float64ObservableGaugeConfig {
+	var config Float64ObservableGaugeConfig
+	for _, o := range opts {
+		config = o.applyFloat64ObservableGauge(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Float64ObservableGaugeConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Float64ObservableGaugeConfig) Unit() string {
+	return c.unit
+}
+
+// Callbacks returns the configured callbacks.
+func (c Float64ObservableGaugeConfig) Callbacks() []Float64Callback {
+	return c.callbacks
+}
+
+// Float64ObservableGaugeOption applies options to a
+// [Float64ObservableGaugeConfig]. See [Float64ObservableOption] and
+// [InstrumentOption] for other options that can be used as a
+// Float64ObservableGaugeOption.
+type Float64ObservableGaugeOption interface {
+	applyFloat64ObservableGauge(Float64ObservableGaugeConfig) Float64ObservableGaugeConfig
+}
+
+// Float64Observer is a recorder of float64 measurements.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Float64Observer interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Float64Observer
+
+	// Observe records the float64 value.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Observe(value float64, options ...ObserveOption)
+}
+
+// Float64Callback is a function registered with a Meter that makes
+// observations for a Float64Observerable instrument it is registered with.
+// Calls to the Float64Observer record measurement values for the
+// Float64Observable.
+//
+// The function needs to complete in a finite amount of time and the deadline
+// of the passed context is expected to be honored.
+//
+// The function needs to make unique observations across all registered
+// Float64Callbacks. Meaning, it should not report measurements with the same
+// attributes as another Float64Callbacks also registered for the same
+// instrument.
+//
+// The function needs to be concurrent safe.
+type Float64Callback func(context.Context, Float64Observer) error
+
+// Float64ObservableOption applies options to float64 Observer instruments.
+type Float64ObservableOption interface {
+	Float64ObservableCounterOption
+	Float64ObservableUpDownCounterOption
+	Float64ObservableGaugeOption
+}
+
+type float64CallbackOpt struct {
+	cback Float64Callback
+}
+
+func (o float64CallbackOpt) applyFloat64ObservableCounter(cfg Float64ObservableCounterConfig) Float64ObservableCounterConfig {
+	cfg.callbacks = append(cfg.callbacks, o.cback)
+	return cfg
+}
+
+func (o float64CallbackOpt) applyFloat64ObservableUpDownCounter(cfg Float64ObservableUpDownCounterConfig) Float64ObservableUpDownCounterConfig {
+	cfg.callbacks = append(cfg.callbacks, o.cback)
+	return cfg
+}
+
+func (o float64CallbackOpt) applyFloat64ObservableGauge(cfg Float64ObservableGaugeConfig) Float64ObservableGaugeConfig {
+	cfg.callbacks = append(cfg.callbacks, o.cback)
+	return cfg
+}
+
+// WithFloat64Callback adds callback to be called for an instrument.
+func WithFloat64Callback(callback Float64Callback) Float64ObservableOption {
+	return float64CallbackOpt{callback}
+}

vendor/go.opentelemetry.io/otel/metric/asyncint64.go

@@ -0,0 +1,269 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metric // import "go.opentelemetry.io/otel/metric"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/metric/embedded"
+)
+
+// Int64Observable describes a set of instruments used asynchronously to record
+// int64 measurements once per collection cycle. Observations of these
+// instruments are only made within a callback.
+//
+// Warning: Methods may be added to this interface in minor releases.
+type Int64Observable interface {
+	Observable
+
+	int64Observable()
+}
+
+// Int64ObservableCounter is an instrument used to asynchronously record
+// increasing int64 measurements once per collection cycle. Observations are
+// only made within a callback for this instrument. The value observed is
+// assumed the to be the cumulative sum of the count.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64ObservableCounter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64ObservableCounter
+
+	Int64Observable
+}
+
+// Int64ObservableCounterConfig contains options for asynchronous counter
+// instruments that record int64 values.
+type Int64ObservableCounterConfig struct {
+	description string
+	unit        string
+	callbacks   []Int64Callback
+}
+
+// NewInt64ObservableCounterConfig returns a new [Int64ObservableCounterConfig]
+// with all opts applied.
+func NewInt64ObservableCounterConfig(opts ...Int64ObservableCounterOption) Int64ObservableCounterConfig {
+	var config Int64ObservableCounterConfig
+	for _, o := range opts {
+		config = o.applyInt64ObservableCounter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64ObservableCounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64ObservableCounterConfig) Unit() string {
+	return c.unit
+}
+
+// Callbacks returns the configured callbacks.
+func (c Int64ObservableCounterConfig) Callbacks() []Int64Callback {
+	return c.callbacks
+}
+
+// Int64ObservableCounterOption applies options to a
+// [Int64ObservableCounterConfig]. See [Int64ObservableOption] and
+// [InstrumentOption] for other options that can be used as an
+// Int64ObservableCounterOption.
+type Int64ObservableCounterOption interface {
+	applyInt64ObservableCounter(Int64ObservableCounterConfig) Int64ObservableCounterConfig
+}
+
+// Int64ObservableUpDownCounter is an instrument used to asynchronously record
+// int64 measurements once per collection cycle. Observations are only made
+// within a callback for this instrument. The value observed is assumed the to
+// be the cumulative sum of the count.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64ObservableUpDownCounter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64ObservableUpDownCounter
+
+	Int64Observable
+}
+
+// Int64ObservableUpDownCounterConfig contains options for asynchronous counter
+// instruments that record int64 values.
+type Int64ObservableUpDownCounterConfig struct {
+	description string
+	unit        string
+	callbacks   []Int64Callback
+}
+
+// NewInt64ObservableUpDownCounterConfig returns a new
+// [Int64ObservableUpDownCounterConfig] with all opts applied.
+func NewInt64ObservableUpDownCounterConfig(opts ...Int64ObservableUpDownCounterOption) Int64ObservableUpDownCounterConfig {
+	var config Int64ObservableUpDownCounterConfig
+	for _, o := range opts {
+		config = o.applyInt64ObservableUpDownCounter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64ObservableUpDownCounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64ObservableUpDownCounterConfig) Unit() string {
+	return c.unit
+}
+
+// Callbacks returns the configured callbacks.
+func (c Int64ObservableUpDownCounterConfig) Callbacks() []Int64Callback {
+	return c.callbacks
+}
+
+// Int64ObservableUpDownCounterOption applies options to a
+// [Int64ObservableUpDownCounterConfig]. See [Int64ObservableOption] and
+// [InstrumentOption] for other options that can be used as an
+// Int64ObservableUpDownCounterOption.
+type Int64ObservableUpDownCounterOption interface {
+	applyInt64ObservableUpDownCounter(Int64ObservableUpDownCounterConfig) Int64ObservableUpDownCounterConfig
+}
+
+// Int64ObservableGauge is an instrument used to asynchronously record
+// instantaneous int64 measurements once per collection cycle. Observations are
+// only made within a callback for this instrument.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64ObservableGauge interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64ObservableGauge
+
+	Int64Observable
+}
+
+// Int64ObservableGaugeConfig contains options for asynchronous counter
+// instruments that record int64 values.
+type Int64ObservableGaugeConfig struct {
+	description string
+	unit        string
+	callbacks   []Int64Callback
+}
+
+// NewInt64ObservableGaugeConfig returns a new [Int64ObservableGaugeConfig]
+// with all opts applied.
+func NewInt64ObservableGaugeConfig(opts ...Int64ObservableGaugeOption) Int64ObservableGaugeConfig {
+	var config Int64ObservableGaugeConfig
+	for _, o := range opts {
+		config = o.applyInt64ObservableGauge(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64ObservableGaugeConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64ObservableGaugeConfig) Unit() string {
+	return c.unit
+}
+
+// Callbacks returns the configured callbacks.
+func (c Int64ObservableGaugeConfig) Callbacks() []Int64Callback {
+	return c.callbacks
+}
+
+// Int64ObservableGaugeOption applies options to a
+// [Int64ObservableGaugeConfig]. See [Int64ObservableOption] and
+// [InstrumentOption] for other options that can be used as an
+// Int64ObservableGaugeOption.
+type Int64ObservableGaugeOption interface {
+	applyInt64ObservableGauge(Int64ObservableGaugeConfig) Int64ObservableGaugeConfig
+}
+
+// Int64Observer is a recorder of int64 measurements.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64Observer interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64Observer
+
+	// Observe records the int64 value.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Observe(value int64, options ...ObserveOption)
+}
+
+// Int64Callback is a function registered with a Meter that makes observations
+// for an Int64Observerable instrument it is registered with. Calls to the
+// Int64Observer record measurement values for the Int64Observable.
+//
+// The function needs to complete in a finite amount of time and the deadline
+// of the passed context is expected to be honored.
+//
+// The function needs to make unique observations across all registered
+// Int64Callbacks. Meaning, it should not report measurements with the same
+// attributes as another Int64Callbacks also registered for the same
+// instrument.
+//
+// The function needs to be concurrent safe.
+type Int64Callback func(context.Context, Int64Observer) error
+
+// Int64ObservableOption applies options to int64 Observer instruments.
+type Int64ObservableOption interface {
+	Int64ObservableCounterOption
+	Int64ObservableUpDownCounterOption
+	Int64ObservableGaugeOption
+}
+
+type int64CallbackOpt struct {
+	cback Int64Callback
+}
+
+func (o int64CallbackOpt) applyInt64ObservableCounter(cfg Int64ObservableCounterConfig) Int64ObservableCounterConfig {
+	cfg.callbacks = append(cfg.callbacks, o.cback)
+	return cfg
+}
+
+func (o int64CallbackOpt) applyInt64ObservableUpDownCounter(cfg Int64ObservableUpDownCounterConfig) Int64ObservableUpDownCounterConfig {
+	cfg.callbacks = append(cfg.callbacks, o.cback)
+	return cfg
+}
+
+func (o int64CallbackOpt) applyInt64ObservableGauge(cfg Int64ObservableGaugeConfig) Int64ObservableGaugeConfig {
+	cfg.callbacks = append(cfg.callbacks, o.cback)
+	return cfg
+}
+
+// WithInt64Callback adds callback to be called for an instrument.
+func WithInt64Callback(callback Int64Callback) Int64ObservableOption {
+	return int64CallbackOpt{callback}
+}

vendor/go.opentelemetry.io/otel/metric/config.go

@@ -0,0 +1,92 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metric // import "go.opentelemetry.io/otel/metric"
+
+import "go.opentelemetry.io/otel/attribute"
+
+// MeterConfig contains options for Meters.
+type MeterConfig struct {
+	instrumentationVersion string
+	schemaURL              string
+	attrs                  attribute.Set
+
+	// Ensure forward compatibility by explicitly making this not comparable.
+	noCmp [0]func() //nolint: unused  // This is indeed used.
+}
+
+// InstrumentationVersion returns the version of the library providing
+// instrumentation.
+func (cfg MeterConfig) InstrumentationVersion() string {
+	return cfg.instrumentationVersion
+}
+
+// InstrumentationAttributes returns the attributes associated with the library
+// providing instrumentation.
+func (cfg MeterConfig) InstrumentationAttributes() attribute.Set {
+	return cfg.attrs
+}
+
+// SchemaURL is the schema_url of the library providing instrumentation.
+func (cfg MeterConfig) SchemaURL() string {
+	return cfg.schemaURL
+}
+
+// MeterOption is an interface for applying Meter options.
+type MeterOption interface {
+	// applyMeter is used to set a MeterOption value of a MeterConfig.
+	applyMeter(MeterConfig) MeterConfig
+}
+
+// NewMeterConfig creates a new MeterConfig and applies
+// all the given options.
+func NewMeterConfig(opts ...MeterOption) MeterConfig {
+	var config MeterConfig
+	for _, o := range opts {
+		config = o.applyMeter(config)
+	}
+	return config
+}
+
+type meterOptionFunc func(MeterConfig) MeterConfig
+
+func (fn meterOptionFunc) applyMeter(cfg MeterConfig) MeterConfig {
+	return fn(cfg)
+}
+
+// WithInstrumentationVersion sets the instrumentation version.
+func WithInstrumentationVersion(version string) MeterOption {
+	return meterOptionFunc(func(config MeterConfig) MeterConfig {
+		config.instrumentationVersion = version
+		return config
+	})
+}
+
+// WithInstrumentationAttributes sets the instrumentation attributes.
+//
+// The passed attributes will be de-duplicated.
+func WithInstrumentationAttributes(attr ...attribute.KeyValue) MeterOption {
+	return meterOptionFunc(func(config MeterConfig) MeterConfig {
+		config.attrs = attribute.NewSet(attr...)
+		return config
+	})
+}
+
+// WithSchemaURL sets the schema URL.
+func WithSchemaURL(schemaURL string) MeterOption {
+	return meterOptionFunc(func(config MeterConfig) MeterConfig {
+		config.schemaURL = schemaURL
+		return config
+	})
+}

vendor/go.opentelemetry.io/otel/metric/doc.go

@@ -0,0 +1,170 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/*
+Package metric provides the OpenTelemetry API used to measure metrics about
+source code operation.
+
+This API is separate from its implementation so the instrumentation built from
+it is reusable. See [go.opentelemetry.io/otel/sdk/metric] for the official
+OpenTelemetry implementation of this API.
+
+All measurements made with this package are made via instruments. These
+instruments are created by a [Meter] which itself is created by a
+[MeterProvider]. Applications need to accept a [MeterProvider] implementation
+as a starting point when instrumenting. This can be done directly, or by using
+the OpenTelemetry global MeterProvider via [GetMeterProvider]. Using an
+appropriately named [Meter] from the accepted [MeterProvider], instrumentation
+can then be built from the [Meter]'s instruments.
+
+# Instruments
+
+Each instrument is designed to make measurements of a particular type. Broadly,
+all instruments fall into two overlapping logical categories: asynchronous or
+synchronous, and int64 or float64.
+
+All synchronous instruments ([Int64Counter], [Int64UpDownCounter],
+[Int64Histogram], [Float64Counter], [Float64UpDownCounter], and
+[Float64Histogram]) are used to measure the operation and performance of source
+code during the source code execution. These instruments only make measurements
+when the source code they instrument is run.
+
+All asynchronous instruments ([Int64ObservableCounter],
+[Int64ObservableUpDownCounter], [Int64ObservableGauge],
+[Float64ObservableCounter], [Float64ObservableUpDownCounter], and
+[Float64ObservableGauge]) are used to measure metrics outside of the execution
+of source code. They are said to make "observations" via a callback function
+called once every measurement collection cycle.
+
+Each instrument is also grouped by the value type it measures. Either int64 or
+float64. The value being measured will dictate which instrument in these
+categories to use.
+
+Outside of these two broad categories, instruments are described by the
+function they are designed to serve. All Counters ([Int64Counter],
+[Float64Counter], [Int64ObservableCounter], and [Float64ObservableCounter]) are
+designed to measure values that never decrease in value, but instead only
+incrementally increase in value. UpDownCounters ([Int64UpDownCounter],
+[Float64UpDownCounter], [Int64ObservableUpDownCounter], and
+[Float64ObservableUpDownCounter]) on the other hand, are designed to measure
+values that can increase and decrease. When more information needs to be
+conveyed about all the synchronous measurements made during a collection cycle,
+a Histogram ([Int64Histogram] and [Float64Histogram]) should be used. Finally,
+when just the most recent measurement needs to be conveyed about an
+asynchronous measurement, a Gauge ([Int64ObservableGauge] and
+[Float64ObservableGauge]) should be used.
+
+See the [OpenTelemetry documentation] for more information about instruments
+and their intended use.
+
+# Measurements
+
+Measurements are made by recording values and information about the values with
+an instrument. How these measurements are recorded depends on the instrument.
+
+Measurements for synchronous instruments ([Int64Counter], [Int64UpDownCounter],
+[Int64Histogram], [Float64Counter], [Float64UpDownCounter], and
+[Float64Histogram]) are recorded using the instrument methods directly. All
+counter instruments have an Add method that is used to measure an increment
+value, and all histogram instruments have a Record method to measure a data
+point.
+
+Asynchronous instruments ([Int64ObservableCounter],
+[Int64ObservableUpDownCounter], [Int64ObservableGauge],
+[Float64ObservableCounter], [Float64ObservableUpDownCounter], and
+[Float64ObservableGauge]) record measurements within a callback function. The
+callback is registered with the Meter which ensures the callback is called once
+per collection cycle. A callback can be registered two ways: during the
+instrument's creation using an option, or later using the RegisterCallback
+method of the [Meter] that created the instrument.
+
+If the following criteria are met, an option ([WithInt64Callback] or
+[WithFloat64Callback]) can be used during the asynchronous instrument's
+creation to register a callback ([Int64Callback] or [Float64Callback],
+respectively):
+
+  - The measurement process is known when the instrument is created
+  - Only that instrument will make a measurement within the callback
+  - The callback never needs to be unregistered
+
+If the criteria are not met, use the RegisterCallback method of the [Meter] that
+created the instrument to register a [Callback].
+
+# API Implementations
+
+This package does not conform to the standard Go versioning policy, all of its
+interfaces may have methods added to them without a package major version bump.
+This non-standard API evolution could surprise an uninformed implementation
+author. They could unknowingly build their implementation in a way that would
+result in a runtime panic for their users that update to the new API.
+
+The API is designed to help inform an instrumentation author about this
+non-standard API evolution. It requires them to choose a default behavior for
+unimplemented interface methods. There are three behavior choices they can
+make:
+
+  - Compilation failure
+  - Panic
+  - Default to another implementation
+
+All interfaces in this API embed a corresponding interface from
+[go.opentelemetry.io/otel/metric/embedded]. If an author wants the default
+behavior of their implementations to be a compilation failure, signaling to
+their users they need to update to the latest version of that implementation,
+they need to embed the corresponding interface from
+[go.opentelemetry.io/otel/metric/embedded] in their implementation. For
+example,
+
+	import "go.opentelemetry.io/otel/metric/embedded"
+
+	type MeterProvider struct {
+		embedded.MeterProvider
+		// ...
+	}
+
+If an author wants the default behavior of their implementations to a panic,
+they need to embed the API interface directly.
+
+	import "go.opentelemetry.io/otel/metric"
+
+	type MeterProvider struct {
+		metric.MeterProvider
+		// ...
+	}
+
+This is not a recommended behavior as it could lead to publishing packages that
+contain runtime panics when users update other package that use newer versions
+of [go.opentelemetry.io/otel/metric].
+
+Finally, an author can embed another implementation in theirs. The embedded
+implementation will be used for methods not defined by the author. For example,
+an author who want to default to silently dropping the call can use
+[go.opentelemetry.io/otel/metric/noop]:
+
+	import "go.opentelemetry.io/otel/metric/noop"
+
+	type MeterProvider struct {
+		noop.MeterProvider
+		// ...
+	}
+
+It is strongly recommended that authors only embed
+[go.opentelemetry.io/otel/metric/noop] if they choose this default behavior.
+That implementation is the only one OpenTelemetry authors can guarantee will
+fully implement all the API interfaces when a user updates their API.
+
+[OpenTelemetry documentation]: https://opentelemetry.io/docs/concepts/signals/metrics/
+[GetMeterProvider]: https://pkg.go.dev/go.opentelemetry.io/otel#GetMeterProvider
+*/
+package metric // import "go.opentelemetry.io/otel/metric"

vendor/go.opentelemetry.io/otel/metric/embedded/embedded.go

@@ -0,0 +1,234 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package embedded provides interfaces embedded within the [OpenTelemetry
+// metric API].
+//
+// Implementers of the [OpenTelemetry metric API] can embed the relevant type
+// from this package into their implementation directly. Doing so will result
+// in a compilation error for users when the [OpenTelemetry metric API] is
+// extended (which is something that can happen without a major version bump of
+// the API package).
+//
+// [OpenTelemetry metric API]: https://pkg.go.dev/go.opentelemetry.io/otel/metric
+package embedded // import "go.opentelemetry.io/otel/metric/embedded"
+
+// MeterProvider is embedded in
+// [go.opentelemetry.io/otel/metric.MeterProvider].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.MeterProvider] if you want users to
+// experience a compilation error, signaling they need to update to your latest
+// implementation, when the [go.opentelemetry.io/otel/metric.MeterProvider]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type MeterProvider interface{ meterProvider() }
+
+// Meter is embedded in [go.opentelemetry.io/otel/metric.Meter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Meter] if you want users to experience a
+// compilation error, signaling they need to update to your latest
+// implementation, when the [go.opentelemetry.io/otel/metric.Meter] interface
+// is extended (which is something that can happen without a major version bump
+// of the API package).
+type Meter interface{ meter() }
+
+// Float64Observer is embedded in
+// [go.opentelemetry.io/otel/metric.Float64Observer].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Float64Observer] if you want
+// users to experience a compilation error, signaling they need to update to
+// your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Float64Observer] interface is
+// extended (which is something that can happen without a major version bump of
+// the API package).
+type Float64Observer interface{ float64Observer() }
+
+// Int64Observer is embedded in
+// [go.opentelemetry.io/otel/metric.Int64Observer].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Int64Observer] if you want users
+// to experience a compilation error, signaling they need to update to your
+// latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Int64Observer] interface is
+// extended (which is something that can happen without a major version bump of
+// the API package).
+type Int64Observer interface{ int64Observer() }
+
+// Observer is embedded in [go.opentelemetry.io/otel/metric.Observer].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Observer] if you want users to experience a
+// compilation error, signaling they need to update to your latest
+// implementation, when the [go.opentelemetry.io/otel/metric.Observer]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Observer interface{ observer() }
+
+// Registration is embedded in [go.opentelemetry.io/otel/metric.Registration].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Registration] if you want users to
+// experience a compilation error, signaling they need to update to your latest
+// implementation, when the [go.opentelemetry.io/otel/metric.Registration]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Registration interface{ registration() }
+
+// Float64Counter is embedded in
+// [go.opentelemetry.io/otel/metric.Float64Counter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Float64Counter] if you want
+// users to experience a compilation error, signaling they need to update to
+// your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Float64Counter] interface is
+// extended (which is something that can happen without a major version bump of
+// the API package).
+type Float64Counter interface{ float64Counter() }
+
+// Float64Histogram is embedded in
+// [go.opentelemetry.io/otel/metric.Float64Histogram].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Float64Histogram] if you want
+// users to experience a compilation error, signaling they need to update to
+// your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Float64Histogram] interface is
+// extended (which is something that can happen without a major version bump of
+// the API package).
+type Float64Histogram interface{ float64Histogram() }
+
+// Float64ObservableCounter is embedded in
+// [go.opentelemetry.io/otel/metric.Float64ObservableCounter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Float64ObservableCounter] if you
+// want users to experience a compilation error, signaling they need to update
+// to your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Float64ObservableCounter]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Float64ObservableCounter interface{ float64ObservableCounter() }
+
+// Float64ObservableGauge is embedded in
+// [go.opentelemetry.io/otel/metric.Float64ObservableGauge].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Float64ObservableGauge] if you
+// want users to experience a compilation error, signaling they need to update
+// to your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Float64ObservableGauge]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Float64ObservableGauge interface{ float64ObservableGauge() }
+
+// Float64ObservableUpDownCounter is embedded in
+// [go.opentelemetry.io/otel/metric.Float64ObservableUpDownCounter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Float64ObservableUpDownCounter]
+// if you want users to experience a compilation error, signaling they need to
+// update to your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Float64ObservableUpDownCounter]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Float64ObservableUpDownCounter interface{ float64ObservableUpDownCounter() }
+
+// Float64UpDownCounter is embedded in
+// [go.opentelemetry.io/otel/metric.Float64UpDownCounter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Float64UpDownCounter] if you
+// want users to experience a compilation error, signaling they need to update
+// to your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Float64UpDownCounter] interface
+// is extended (which is something that can happen without a major version bump
+// of the API package).
+type Float64UpDownCounter interface{ float64UpDownCounter() }
+
+// Int64Counter is embedded in
+// [go.opentelemetry.io/otel/metric.Int64Counter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Int64Counter] if you want users
+// to experience a compilation error, signaling they need to update to your
+// latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Int64Counter] interface is
+// extended (which is something that can happen without a major version bump of
+// the API package).
+type Int64Counter interface{ int64Counter() }
+
+// Int64Histogram is embedded in
+// [go.opentelemetry.io/otel/metric.Int64Histogram].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Int64Histogram] if you want
+// users to experience a compilation error, signaling they need to update to
+// your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Int64Histogram] interface is
+// extended (which is something that can happen without a major version bump of
+// the API package).
+type Int64Histogram interface{ int64Histogram() }
+
+// Int64ObservableCounter is embedded in
+// [go.opentelemetry.io/otel/metric.Int64ObservableCounter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Int64ObservableCounter] if you
+// want users to experience a compilation error, signaling they need to update
+// to your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Int64ObservableCounter]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Int64ObservableCounter interface{ int64ObservableCounter() }
+
+// Int64ObservableGauge is embedded in
+// [go.opentelemetry.io/otel/metric.Int64ObservableGauge].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Int64ObservableGauge] if you
+// want users to experience a compilation error, signaling they need to update
+// to your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Int64ObservableGauge] interface
+// is extended (which is something that can happen without a major version bump
+// of the API package).
+type Int64ObservableGauge interface{ int64ObservableGauge() }
+
+// Int64ObservableUpDownCounter is embedded in
+// [go.opentelemetry.io/otel/metric.Int64ObservableUpDownCounter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Int64ObservableUpDownCounter] if
+// you want users to experience a compilation error, signaling they need to
+// update to your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Int64ObservableUpDownCounter]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Int64ObservableUpDownCounter interface{ int64ObservableUpDownCounter() }
+
+// Int64UpDownCounter is embedded in
+// [go.opentelemetry.io/otel/metric.Int64UpDownCounter].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Int64UpDownCounter] if you want
+// users to experience a compilation error, signaling they need to update to
+// your latest implementation, when the
+// [go.opentelemetry.io/otel/metric.Int64UpDownCounter] interface is
+// extended (which is something that can happen without a major version bump of
+// the API package).
+type Int64UpDownCounter interface{ int64UpDownCounter() }

vendor/go.opentelemetry.io/otel/metric/instrument.go

@@ -0,0 +1,332 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metric // import "go.opentelemetry.io/otel/metric"
+
+import "go.opentelemetry.io/otel/attribute"
+
+// Observable is used as a grouping mechanism for all instruments that are
+// updated within a Callback.
+type Observable interface {
+	observable()
+}
+
+// InstrumentOption applies options to all instruments.
+type InstrumentOption interface {
+	Int64CounterOption
+	Int64UpDownCounterOption
+	Int64HistogramOption
+	Int64ObservableCounterOption
+	Int64ObservableUpDownCounterOption
+	Int64ObservableGaugeOption
+
+	Float64CounterOption
+	Float64UpDownCounterOption
+	Float64HistogramOption
+	Float64ObservableCounterOption
+	Float64ObservableUpDownCounterOption
+	Float64ObservableGaugeOption
+}
+
+type descOpt string
+
+func (o descOpt) applyFloat64Counter(c Float64CounterConfig) Float64CounterConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyFloat64UpDownCounter(c Float64UpDownCounterConfig) Float64UpDownCounterConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyFloat64Histogram(c Float64HistogramConfig) Float64HistogramConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyFloat64ObservableCounter(c Float64ObservableCounterConfig) Float64ObservableCounterConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyFloat64ObservableUpDownCounter(c Float64ObservableUpDownCounterConfig) Float64ObservableUpDownCounterConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyFloat64ObservableGauge(c Float64ObservableGaugeConfig) Float64ObservableGaugeConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyInt64Counter(c Int64CounterConfig) Int64CounterConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyInt64UpDownCounter(c Int64UpDownCounterConfig) Int64UpDownCounterConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyInt64Histogram(c Int64HistogramConfig) Int64HistogramConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyInt64ObservableCounter(c Int64ObservableCounterConfig) Int64ObservableCounterConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyInt64ObservableUpDownCounter(c Int64ObservableUpDownCounterConfig) Int64ObservableUpDownCounterConfig {
+	c.description = string(o)
+	return c
+}
+
+func (o descOpt) applyInt64ObservableGauge(c Int64ObservableGaugeConfig) Int64ObservableGaugeConfig {
+	c.description = string(o)
+	return c
+}
+
+// WithDescription sets the instrument description.
+func WithDescription(desc string) InstrumentOption { return descOpt(desc) }
+
+type unitOpt string
+
+func (o unitOpt) applyFloat64Counter(c Float64CounterConfig) Float64CounterConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyFloat64UpDownCounter(c Float64UpDownCounterConfig) Float64UpDownCounterConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyFloat64Histogram(c Float64HistogramConfig) Float64HistogramConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyFloat64ObservableCounter(c Float64ObservableCounterConfig) Float64ObservableCounterConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyFloat64ObservableUpDownCounter(c Float64ObservableUpDownCounterConfig) Float64ObservableUpDownCounterConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyFloat64ObservableGauge(c Float64ObservableGaugeConfig) Float64ObservableGaugeConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyInt64Counter(c Int64CounterConfig) Int64CounterConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyInt64UpDownCounter(c Int64UpDownCounterConfig) Int64UpDownCounterConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyInt64Histogram(c Int64HistogramConfig) Int64HistogramConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyInt64ObservableCounter(c Int64ObservableCounterConfig) Int64ObservableCounterConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyInt64ObservableUpDownCounter(c Int64ObservableUpDownCounterConfig) Int64ObservableUpDownCounterConfig {
+	c.unit = string(o)
+	return c
+}
+
+func (o unitOpt) applyInt64ObservableGauge(c Int64ObservableGaugeConfig) Int64ObservableGaugeConfig {
+	c.unit = string(o)
+	return c
+}
+
+// WithUnit sets the instrument unit.
+func WithUnit(u string) InstrumentOption { return unitOpt(u) }
+
+// AddOption applies options to an addition measurement. See
+// [MeasurementOption] for other options that can be used as an AddOption.
+type AddOption interface {
+	applyAdd(AddConfig) AddConfig
+}
+
+// AddConfig contains options for an addition measurement.
+type AddConfig struct {
+	attrs attribute.Set
+}
+
+// NewAddConfig returns a new [AddConfig] with all opts applied.
+func NewAddConfig(opts []AddOption) AddConfig {
+	config := AddConfig{attrs: *attribute.EmptySet()}
+	for _, o := range opts {
+		config = o.applyAdd(config)
+	}
+	return config
+}
+
+// Attributes returns the configured attribute set.
+func (c AddConfig) Attributes() attribute.Set {
+	return c.attrs
+}
+
+// RecordOption applies options to an addition measurement. See
+// [MeasurementOption] for other options that can be used as a RecordOption.
+type RecordOption interface {
+	applyRecord(RecordConfig) RecordConfig
+}
+
+// RecordConfig contains options for a recorded measurement.
+type RecordConfig struct {
+	attrs attribute.Set
+}
+
+// NewRecordConfig returns a new [RecordConfig] with all opts applied.
+func NewRecordConfig(opts []RecordOption) RecordConfig {
+	config := RecordConfig{attrs: *attribute.EmptySet()}
+	for _, o := range opts {
+		config = o.applyRecord(config)
+	}
+	return config
+}
+
+// Attributes returns the configured attribute set.
+func (c RecordConfig) Attributes() attribute.Set {
+	return c.attrs
+}
+
+// ObserveOption applies options to an addition measurement. See
+// [MeasurementOption] for other options that can be used as a ObserveOption.
+type ObserveOption interface {
+	applyObserve(ObserveConfig) ObserveConfig
+}
+
+// ObserveConfig contains options for an observed measurement.
+type ObserveConfig struct {
+	attrs attribute.Set
+}
+
+// NewObserveConfig returns a new [ObserveConfig] with all opts applied.
+func NewObserveConfig(opts []ObserveOption) ObserveConfig {
+	config := ObserveConfig{attrs: *attribute.EmptySet()}
+	for _, o := range opts {
+		config = o.applyObserve(config)
+	}
+	return config
+}
+
+// Attributes returns the configured attribute set.
+func (c ObserveConfig) Attributes() attribute.Set {
+	return c.attrs
+}
+
+// MeasurementOption applies options to all instrument measurement.
+type MeasurementOption interface {
+	AddOption
+	RecordOption
+	ObserveOption
+}
+
+type attrOpt struct {
+	set attribute.Set
+}
+
+// mergeSets returns the union of keys between a and b. Any duplicate keys will
+// use the value associated with b.
+func mergeSets(a, b attribute.Set) attribute.Set {
+	// NewMergeIterator uses the first value for any duplicates.
+	iter := attribute.NewMergeIterator(&b, &a)
+	merged := make([]attribute.KeyValue, 0, a.Len()+b.Len())
+	for iter.Next() {
+		merged = append(merged, iter.Attribute())
+	}
+	return attribute.NewSet(merged...)
+}
+
+func (o attrOpt) applyAdd(c AddConfig) AddConfig {
+	switch {
+	case o.set.Len() == 0:
+	case c.attrs.Len() == 0:
+		c.attrs = o.set
+	default:
+		c.attrs = mergeSets(c.attrs, o.set)
+	}
+	return c
+}
+
+func (o attrOpt) applyRecord(c RecordConfig) RecordConfig {
+	switch {
+	case o.set.Len() == 0:
+	case c.attrs.Len() == 0:
+		c.attrs = o.set
+	default:
+		c.attrs = mergeSets(c.attrs, o.set)
+	}
+	return c
+}
+
+func (o attrOpt) applyObserve(c ObserveConfig) ObserveConfig {
+	switch {
+	case o.set.Len() == 0:
+	case c.attrs.Len() == 0:
+		c.attrs = o.set
+	default:
+		c.attrs = mergeSets(c.attrs, o.set)
+	}
+	return c
+}
+
+// WithAttributeSet sets the attribute Set associated with a measurement is
+// made with.
+//
+// If multiple WithAttributeSet or WithAttributes options are passed the
+// attributes will be merged together in the order they are passed. Attributes
+// with duplicate keys will use the last value passed.
+func WithAttributeSet(attributes attribute.Set) MeasurementOption {
+	return attrOpt{set: attributes}
+}
+
+// WithAttributes converts attributes into an attribute Set and sets the Set to
+// be associated with a measurement. This is shorthand for:
+//
+//	cp := make([]attribute.KeyValue, len(attributes))
+//	copy(cp, attributes)
+//	WithAttributes(attribute.NewSet(cp...))
+//
+// [attribute.NewSet] may modify the passed attributes so this will make a copy
+// of attributes before creating a set in order to ensure this function is
+// concurrent safe. This makes this option function less optimized in
+// comparison to [WithAttributeSet]. Therefore, [WithAttributeSet] should be
+// preferred for performance sensitive code.
+//
+// See [WithAttributeSet] for information about how multiple WithAttributes are
+// merged.
+func WithAttributes(attributes ...attribute.KeyValue) MeasurementOption {
+	cp := make([]attribute.KeyValue, len(attributes))
+	copy(cp, attributes)
+	return attrOpt{set: attribute.NewSet(cp...)}
+}

vendor/go.opentelemetry.io/otel/metric/meter.go

@@ -0,0 +1,210 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metric // import "go.opentelemetry.io/otel/metric"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/metric/embedded"
+)
+
+// MeterProvider provides access to named Meter instances, for instrumenting
+// an application or package.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type MeterProvider interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.MeterProvider
+
+	// Meter returns a new Meter with the provided name and configuration.
+	//
+	// A Meter should be scoped at most to a single package. The name needs to
+	// be unique so it does not collide with other names used by
+	// an application, nor other applications. To achieve this, the import path
+	// of the instrumentation package is recommended to be used as name.
+	//
+	// If the name is empty, then an implementation defined default name will
+	// be used instead.
+	Meter(name string, opts ...MeterOption) Meter
+}
+
+// Meter provides access to instrument instances for recording metrics.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Meter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Meter
+
+	// Int64Counter returns a new Int64Counter instrument identified by name
+	// and configured with options. The instrument is used to synchronously
+	// record increasing int64 measurements during a computational operation.
+	Int64Counter(name string, options ...Int64CounterOption) (Int64Counter, error)
+	// Int64UpDownCounter returns a new Int64UpDownCounter instrument
+	// identified by name and configured with options. The instrument is used
+	// to synchronously record int64 measurements during a computational
+	// operation.
+	Int64UpDownCounter(name string, options ...Int64UpDownCounterOption) (Int64UpDownCounter, error)
+	// Int64Histogram returns a new Int64Histogram instrument identified by
+	// name and configured with options. The instrument is used to
+	// synchronously record the distribution of int64 measurements during a
+	// computational operation.
+	Int64Histogram(name string, options ...Int64HistogramOption) (Int64Histogram, error)
+	// Int64ObservableCounter returns a new Int64ObservableCounter identified
+	// by name and configured with options. The instrument is used to
+	// asynchronously record increasing int64 measurements once per a
+	// measurement collection cycle.
+	//
+	// Measurements for the returned instrument are made via a callback. Use
+	// the WithInt64Callback option to register the callback here, or use the
+	// RegisterCallback method of this Meter to register one later. See the
+	// Measurements section of the package documentation for more information.
+	Int64ObservableCounter(name string, options ...Int64ObservableCounterOption) (Int64ObservableCounter, error)
+	// Int64ObservableUpDownCounter returns a new Int64ObservableUpDownCounter
+	// instrument identified by name and configured with options. The
+	// instrument is used to asynchronously record int64 measurements once per
+	// a measurement collection cycle.
+	//
+	// Measurements for the returned instrument are made via a callback. Use
+	// the WithInt64Callback option to register the callback here, or use the
+	// RegisterCallback method of this Meter to register one later. See the
+	// Measurements section of the package documentation for more information.
+	Int64ObservableUpDownCounter(name string, options ...Int64ObservableUpDownCounterOption) (Int64ObservableUpDownCounter, error)
+	// Int64ObservableGauge returns a new Int64ObservableGauge instrument
+	// identified by name and configured with options. The instrument is used
+	// to asynchronously record instantaneous int64 measurements once per a
+	// measurement collection cycle.
+	//
+	// Measurements for the returned instrument are made via a callback. Use
+	// the WithInt64Callback option to register the callback here, or use the
+	// RegisterCallback method of this Meter to register one later. See the
+	// Measurements section of the package documentation for more information.
+	Int64ObservableGauge(name string, options ...Int64ObservableGaugeOption) (Int64ObservableGauge, error)
+
+	// Float64Counter returns a new Float64Counter instrument identified by
+	// name and configured with options. The instrument is used to
+	// synchronously record increasing float64 measurements during a
+	// computational operation.
+	Float64Counter(name string, options ...Float64CounterOption) (Float64Counter, error)
+	// Float64UpDownCounter returns a new Float64UpDownCounter instrument
+	// identified by name and configured with options. The instrument is used
+	// to synchronously record float64 measurements during a computational
+	// operation.
+	Float64UpDownCounter(name string, options ...Float64UpDownCounterOption) (Float64UpDownCounter, error)
+	// Float64Histogram returns a new Float64Histogram instrument identified by
+	// name and configured with options. The instrument is used to
+	// synchronously record the distribution of float64 measurements during a
+	// computational operation.
+	Float64Histogram(name string, options ...Float64HistogramOption) (Float64Histogram, error)
+	// Float64ObservableCounter returns a new Float64ObservableCounter
+	// instrument identified by name and configured with options. The
+	// instrument is used to asynchronously record increasing float64
+	// measurements once per a measurement collection cycle.
+	//
+	// Measurements for the returned instrument are made via a callback. Use
+	// the WithFloat64Callback option to register the callback here, or use the
+	// RegisterCallback method of this Meter to register one later. See the
+	// Measurements section of the package documentation for more information.
+	Float64ObservableCounter(name string, options ...Float64ObservableCounterOption) (Float64ObservableCounter, error)
+	// Float64ObservableUpDownCounter returns a new
+	// Float64ObservableUpDownCounter instrument identified by name and
+	// configured with options. The instrument is used to asynchronously record
+	// float64 measurements once per a measurement collection cycle.
+	//
+	// Measurements for the returned instrument are made via a callback. Use
+	// the WithFloat64Callback option to register the callback here, or use the
+	// RegisterCallback method of this Meter to register one later. See the
+	// Measurements section of the package documentation for more information.
+	Float64ObservableUpDownCounter(name string, options ...Float64ObservableUpDownCounterOption) (Float64ObservableUpDownCounter, error)
+	// Float64ObservableGauge returns a new Float64ObservableGauge instrument
+	// identified by name and configured with options. The instrument is used
+	// to asynchronously record instantaneous float64 measurements once per a
+	// measurement collection cycle.
+	//
+	// Measurements for the returned instrument are made via a callback. Use
+	// the WithFloat64Callback option to register the callback here, or use the
+	// RegisterCallback method of this Meter to register one later. See the
+	// Measurements section of the package documentation for more information.
+	Float64ObservableGauge(name string, options ...Float64ObservableGaugeOption) (Float64ObservableGauge, error)
+
+	// RegisterCallback registers f to be called during the collection of a
+	// measurement cycle.
+	//
+	// If Unregister of the returned Registration is called, f needs to be
+	// unregistered and not called during collection.
+	//
+	// The instruments f is registered with are the only instruments that f may
+	// observe values for.
+	//
+	// If no instruments are passed, f should not be registered nor called
+	// during collection.
+	RegisterCallback(f Callback, instruments ...Observable) (Registration, error)
+}
+
+// Callback is a function registered with a Meter that makes observations for
+// the set of instruments it is registered with. The Observer parameter is used
+// to record measurement observations for these instruments.
+//
+// The function needs to complete in a finite amount of time and the deadline
+// of the passed context is expected to be honored.
+//
+// The function needs to make unique observations across all registered
+// Callbacks. Meaning, it should not report measurements for an instrument with
+// the same attributes as another Callback will report.
+//
+// The function needs to be concurrent safe.
+type Callback func(context.Context, Observer) error
+
+// Observer records measurements for multiple instruments in a Callback.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Observer interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Observer
+
+	// ObserveFloat64 records the float64 value for obsrv.
+	ObserveFloat64(obsrv Float64Observable, value float64, opts ...ObserveOption)
+	// ObserveInt64 records the int64 value for obsrv.
+	ObserveInt64(obsrv Int64Observable, value int64, opts ...ObserveOption)
+}
+
+// Registration is an token representing the unique registration of a callback
+// for a set of instruments with a Meter.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Registration interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Registration
+
+	// Unregister removes the callback registration from a Meter.
+	//
+	// This method needs to be idempotent and concurrent safe.
+	Unregister() error
+}

vendor/go.opentelemetry.io/otel/metric/syncfloat64.go

@@ -0,0 +1,179 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metric // import "go.opentelemetry.io/otel/metric"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/metric/embedded"
+)
+
+// Float64Counter is an instrument that records increasing float64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Float64Counter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Float64Counter
+
+	// Add records a change to the counter.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Add(ctx context.Context, incr float64, options ...AddOption)
+}
+
+// Float64CounterConfig contains options for synchronous counter instruments that
+// record int64 values.
+type Float64CounterConfig struct {
+	description string
+	unit        string
+}
+
+// NewFloat64CounterConfig returns a new [Float64CounterConfig] with all opts
+// applied.
+func NewFloat64CounterConfig(opts ...Float64CounterOption) Float64CounterConfig {
+	var config Float64CounterConfig
+	for _, o := range opts {
+		config = o.applyFloat64Counter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Float64CounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Float64CounterConfig) Unit() string {
+	return c.unit
+}
+
+// Float64CounterOption applies options to a [Float64CounterConfig]. See
+// [InstrumentOption] for other options that can be used as a
+// Float64CounterOption.
+type Float64CounterOption interface {
+	applyFloat64Counter(Float64CounterConfig) Float64CounterConfig
+}
+
+// Float64UpDownCounter is an instrument that records increasing or decreasing
+// float64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Float64UpDownCounter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Float64UpDownCounter
+
+	// Add records a change to the counter.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Add(ctx context.Context, incr float64, options ...AddOption)
+}
+
+// Float64UpDownCounterConfig contains options for synchronous counter
+// instruments that record int64 values.
+type Float64UpDownCounterConfig struct {
+	description string
+	unit        string
+}
+
+// NewFloat64UpDownCounterConfig returns a new [Float64UpDownCounterConfig]
+// with all opts applied.
+func NewFloat64UpDownCounterConfig(opts ...Float64UpDownCounterOption) Float64UpDownCounterConfig {
+	var config Float64UpDownCounterConfig
+	for _, o := range opts {
+		config = o.applyFloat64UpDownCounter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Float64UpDownCounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Float64UpDownCounterConfig) Unit() string {
+	return c.unit
+}
+
+// Float64UpDownCounterOption applies options to a
+// [Float64UpDownCounterConfig]. See [InstrumentOption] for other options that
+// can be used as a Float64UpDownCounterOption.
+type Float64UpDownCounterOption interface {
+	applyFloat64UpDownCounter(Float64UpDownCounterConfig) Float64UpDownCounterConfig
+}
+
+// Float64Histogram is an instrument that records a distribution of float64
+// values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Float64Histogram interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Float64Histogram
+
+	// Record adds an additional value to the distribution.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Record(ctx context.Context, incr float64, options ...RecordOption)
+}
+
+// Float64HistogramConfig contains options for synchronous counter instruments
+// that record int64 values.
+type Float64HistogramConfig struct {
+	description string
+	unit        string
+}
+
+// NewFloat64HistogramConfig returns a new [Float64HistogramConfig] with all
+// opts applied.
+func NewFloat64HistogramConfig(opts ...Float64HistogramOption) Float64HistogramConfig {
+	var config Float64HistogramConfig
+	for _, o := range opts {
+		config = o.applyFloat64Histogram(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Float64HistogramConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Float64HistogramConfig) Unit() string {
+	return c.unit
+}
+
+// Float64HistogramOption applies options to a [Float64HistogramConfig]. See
+// [InstrumentOption] for other options that can be used as a
+// Float64HistogramOption.
+type Float64HistogramOption interface {
+	applyFloat64Histogram(Float64HistogramConfig) Float64HistogramConfig
+}

vendor/go.opentelemetry.io/otel/metric/syncint64.go

@@ -0,0 +1,179 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metric // import "go.opentelemetry.io/otel/metric"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/metric/embedded"
+)
+
+// Int64Counter is an instrument that records increasing int64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64Counter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64Counter
+
+	// Add records a change to the counter.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Add(ctx context.Context, incr int64, options ...AddOption)
+}
+
+// Int64CounterConfig contains options for synchronous counter instruments that
+// record int64 values.
+type Int64CounterConfig struct {
+	description string
+	unit        string
+}
+
+// NewInt64CounterConfig returns a new [Int64CounterConfig] with all opts
+// applied.
+func NewInt64CounterConfig(opts ...Int64CounterOption) Int64CounterConfig {
+	var config Int64CounterConfig
+	for _, o := range opts {
+		config = o.applyInt64Counter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64CounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64CounterConfig) Unit() string {
+	return c.unit
+}
+
+// Int64CounterOption applies options to a [Int64CounterConfig]. See
+// [InstrumentOption] for other options that can be used as an
+// Int64CounterOption.
+type Int64CounterOption interface {
+	applyInt64Counter(Int64CounterConfig) Int64CounterConfig
+}
+
+// Int64UpDownCounter is an instrument that records increasing or decreasing
+// int64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64UpDownCounter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64UpDownCounter
+
+	// Add records a change to the counter.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Add(ctx context.Context, incr int64, options ...AddOption)
+}
+
+// Int64UpDownCounterConfig contains options for synchronous counter
+// instruments that record int64 values.
+type Int64UpDownCounterConfig struct {
+	description string
+	unit        string
+}
+
+// NewInt64UpDownCounterConfig returns a new [Int64UpDownCounterConfig] with
+// all opts applied.
+func NewInt64UpDownCounterConfig(opts ...Int64UpDownCounterOption) Int64UpDownCounterConfig {
+	var config Int64UpDownCounterConfig
+	for _, o := range opts {
+		config = o.applyInt64UpDownCounter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64UpDownCounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64UpDownCounterConfig) Unit() string {
+	return c.unit
+}
+
+// Int64UpDownCounterOption applies options to a [Int64UpDownCounterConfig].
+// See [InstrumentOption] for other options that can be used as an
+// Int64UpDownCounterOption.
+type Int64UpDownCounterOption interface {
+	applyInt64UpDownCounter(Int64UpDownCounterConfig) Int64UpDownCounterConfig
+}
+
+// Int64Histogram is an instrument that records a distribution of int64
+// values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64Histogram interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64Histogram
+
+	// Record adds an additional value to the distribution.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Record(ctx context.Context, incr int64, options ...RecordOption)
+}
+
+// Int64HistogramConfig contains options for synchronous counter instruments
+// that record int64 values.
+type Int64HistogramConfig struct {
+	description string
+	unit        string
+}
+
+// NewInt64HistogramConfig returns a new [Int64HistogramConfig] with all opts
+// applied.
+func NewInt64HistogramConfig(opts ...Int64HistogramOption) Int64HistogramConfig {
+	var config Int64HistogramConfig
+	for _, o := range opts {
+		config = o.applyInt64Histogram(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64HistogramConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64HistogramConfig) Unit() string {
+	return c.unit
+}
+
+// Int64HistogramOption applies options to a [Int64HistogramConfig]. See
+// [InstrumentOption] for other options that can be used as an
+// Int64HistogramOption.
+type Int64HistogramOption interface {
+	applyInt64Histogram(Int64HistogramConfig) Int64HistogramConfig
+}

vendor/go.opentelemetry.io/otel/requirements.txt

@@ -0,0 +1 @@
+codespell==2.2.4

vendor/go.opentelemetry.io/otel/semconv/internal/http.go

@@ -232,10 +232,12 @@ func (sc *SemanticConventions) HTTPServerAttributesFromHTTPRequest(serverName, r
 	if route != "" {
 		attrs = append(attrs, sc.HTTPRouteKey.String(route))
 	}
-	if values, ok := request.Header["X-Forwarded-For"]; ok && len(values) > 0 {
+	if values := request.Header["X-Forwarded-For"]; len(values) > 0 {
-		if addresses := strings.SplitN(values[0], ",", 2); len(addresses) > 0 {
+		addr := values[0]
-			attrs = append(attrs, sc.HTTPClientIPKey.String(addresses[0]))
+		if i := strings.Index(addr, ","); i > 0 {
+			addr = addr[:i]
 		}
+		attrs = append(attrs, sc.HTTPClientIPKey.String(addr))
 	}
 
 	return append(attrs, sc.httpCommonAttributesFromHTTPRequest(request)...)

vendor/go.opentelemetry.io/otel/version.go

@@ -16,5 +16,5 @@ package otel // import "go.opentelemetry.io/otel"
 
 // Version is the current release version of OpenTelemetry in use.
 func Version() string {
-	return "1.15.1"
+	return "1.16.0"
 }

vendor/go.opentelemetry.io/otel/versions.yaml

@@ -14,7 +14,7 @@
 
 module-sets:
   stable-v1:
-    version: v1.15.1
+    version: v1.16.0
     modules:
       - go.opentelemetry.io/otel
       - go.opentelemetry.io/otel/bridge/opentracing
@@ -32,10 +32,11 @@ module-sets:
       - go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp
       - go.opentelemetry.io/otel/exporters/stdout/stdouttrace
       - go.opentelemetry.io/otel/exporters/zipkin
+      - go.opentelemetry.io/otel/metric
       - go.opentelemetry.io/otel/sdk
       - go.opentelemetry.io/otel/trace
   experimental-metrics:
-    version: v0.38.1
+    version: v0.39.0
     modules:
       - go.opentelemetry.io/otel/example/opencensus
       - go.opentelemetry.io/otel/example/prometheus
@@ -44,7 +45,6 @@ module-sets:
       - go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp
       - go.opentelemetry.io/otel/exporters/prometheus
       - go.opentelemetry.io/otel/exporters/stdout/stdoutmetric
-      - go.opentelemetry.io/otel/metric
       - go.opentelemetry.io/otel/sdk/metric
       - go.opentelemetry.io/otel/bridge/opencensus
       - go.opentelemetry.io/otel/bridge/opencensus/test

vendor/modules.txt

@@ -1619,8 +1619,8 @@ github.com/spf13/pflag
 # github.com/stretchr/objx v0.5.0
 ## explicit; go 1.12
 github.com/stretchr/objx
-# github.com/stretchr/testify v1.8.2
+# github.com/stretchr/testify v1.8.3
-## explicit; go 1.13
+## explicit; go 1.20
 github.com/stretchr/testify/assert
 github.com/stretchr/testify/mock
 github.com/stretchr/testify/require
@@ -1800,7 +1800,7 @@ go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc/inte
 ## explicit; go 1.19
 go.opentelemetry.io/contrib/zpages
 go.opentelemetry.io/contrib/zpages/internal
-# go.opentelemetry.io/otel v1.15.1
+# go.opentelemetry.io/otel v1.16.0
 ## explicit; go 1.19
 go.opentelemetry.io/otel
 go.opentelemetry.io/otel/attribute
@@ -1837,6 +1837,10 @@ go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal/tracetransform
 # go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.15.1
 ## explicit; go 1.19
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc
+# go.opentelemetry.io/otel/metric v1.16.0
+## explicit; go 1.19
+go.opentelemetry.io/otel/metric
+go.opentelemetry.io/otel/metric/embedded
 # go.opentelemetry.io/otel/sdk v1.15.1
 ## explicit; go 1.19
 go.opentelemetry.io/otel/sdk
@@ -1845,7 +1849,7 @@ go.opentelemetry.io/otel/sdk/internal
 go.opentelemetry.io/otel/sdk/internal/env
 go.opentelemetry.io/otel/sdk/resource
 go.opentelemetry.io/otel/sdk/trace
-# go.opentelemetry.io/otel/trace v1.15.1
+# go.opentelemetry.io/otel/trace v1.16.0
 ## explicit; go 1.19
 go.opentelemetry.io/otel/trace
 # go.opentelemetry.io/proto/otlp v0.19.0