Initial QSfera import

Server/vendor/github.com/go-micro/plugins/v4/wrapper/monitoring/prometheus/LICENSE

@@ -0,0 +1,191 @@
+
+                                 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
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      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
+
+   Copyright 2015 Asim Aslam.
+
+   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.

Server/vendor/github.com/go-micro/plugins/v4/wrapper/monitoring/prometheus/README.md

@@ -0,0 +1,24 @@
+# Prometheus 
+
+Wrappers are a form of middleware that can be used with go-micro services. They can wrap both the Client and Server handlers. 
+This plugin implements the HandlerWrapper interface to provide automatic prometheus metric handling
+for each microservice method execution time and operation count for success and failed cases.  
+
+This handler will export two metrics to prometheus:
+* **micro_request_total**. How many go-micro requests processed, partitioned by method and status.
+* **micro_request_duration_microseconds**. Service method request latencies in microseconds, partitioned by method.
+
+# Usage
+
+When creating your service, add the wrapper like so.
+
+```go
+    service := micro.NewService(
+        micro.Name("service name"),
+    	micro.Version("latest"),
+    	micro.WrapHandler(prometheus.NewHandlerWrapper()),
+    )
+    
+    service.Init()
+```
+

Server/vendor/github.com/go-micro/plugins/v4/wrapper/monitoring/prometheus/prometheus.go

@@ -0,0 +1,294 @@
+package prometheus
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"go-micro.dev/v4/client"
+	"go-micro.dev/v4/logger"
+	"go-micro.dev/v4/registry"
+	"go-micro.dev/v4/server"
+)
+
+var (
+	// default metric prefix.
+	DefaultMetricPrefix = "micro_"
+	// default label prefix.
+	DefaultLabelPrefix = "micro_"
+
+	opsCounter           *prometheus.CounterVec
+	timeCounterSummary   *prometheus.SummaryVec
+	timeCounterHistogram *prometheus.HistogramVec
+)
+
+type Options struct {
+	Name    string
+	Version string
+	ID      string
+}
+
+type Option func(*Options)
+
+func ServiceName(name string) Option {
+	return func(opts *Options) {
+		opts.Name = name
+	}
+}
+
+func ServiceVersion(version string) Option {
+	return func(opts *Options) {
+		opts.Version = version
+	}
+}
+
+func ServiceID(id string) Option {
+	return func(opts *Options) {
+		opts.ID = id
+	}
+}
+
+func init() {
+	if opsCounter == nil {
+		opsCounter = prometheus.NewCounterVec(
+			prometheus.CounterOpts{
+				Name: fmt.Sprintf("%srequest_total", DefaultMetricPrefix),
+				Help: "Requests processed, partitioned by endpoint and status",
+			},
+			[]string{
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "name"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "version"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "id"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "endpoint"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "status"),
+			},
+		)
+	}
+
+	if timeCounterSummary == nil {
+		timeCounterSummary = prometheus.NewSummaryVec(
+			prometheus.SummaryOpts{
+				Name: fmt.Sprintf("%slatency_microseconds", DefaultMetricPrefix),
+				Help: "Request latencies in microseconds, partitioned by endpoint",
+			},
+			[]string{
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "name"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "version"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "id"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "endpoint"),
+			},
+		)
+	}
+
+	if timeCounterHistogram == nil {
+		timeCounterHistogram = prometheus.NewHistogramVec(
+			prometheus.HistogramOpts{
+				Name: fmt.Sprintf("%srequest_duration_seconds", DefaultMetricPrefix),
+				Help: "Request time in seconds, partitioned by endpoint",
+			},
+			[]string{
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "name"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "version"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "id"),
+				fmt.Sprintf("%s%s", DefaultLabelPrefix, "endpoint"),
+			},
+		)
+	}
+
+	for _, collector := range []prometheus.Collector{opsCounter, timeCounterSummary, timeCounterHistogram} {
+		if err := prometheus.DefaultRegisterer.Register(collector); err != nil {
+			// if already registered, skip fatal
+			if _, ok := err.(prometheus.AlreadyRegisteredError); !ok {
+				logger.Fatal(err)
+			}
+		}
+	}
+}
+
+type wrapper struct {
+	options  Options
+	callFunc client.CallFunc
+	client.Client
+}
+
+func NewClientWrapper(opts ...Option) client.Wrapper {
+	options := Options{}
+	for _, opt := range opts {
+		opt(&options)
+	}
+
+	return func(c client.Client) client.Client {
+		handler := &wrapper{
+			options: options,
+			Client:  c,
+		}
+
+		return handler
+	}
+}
+
+func NewCallWrapper(opts ...Option) client.CallWrapper {
+	options := Options{}
+	for _, opt := range opts {
+		opt(&options)
+	}
+
+	return func(fn client.CallFunc) client.CallFunc {
+		handler := &wrapper{
+			options:  options,
+			callFunc: fn,
+		}
+
+		return handler.CallFunc
+	}
+}
+
+func (w *wrapper) CallFunc(ctx context.Context, node *registry.Node, req client.Request, rsp interface{}, opts client.CallOptions) error {
+	endpoint := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
+
+	timer := prometheus.NewTimer(prometheus.ObserverFunc(func(v float64) {
+		us := v * 1000000 // make microseconds
+		timeCounterSummary.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(us)
+		timeCounterHistogram.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(v)
+	}))
+	defer timer.ObserveDuration()
+
+	err := w.callFunc(ctx, node, req, rsp, opts)
+	if err == nil {
+		opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "success").Inc()
+	} else {
+		opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "failure").Inc()
+	}
+
+	return err
+}
+
+func (w *wrapper) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
+	endpoint := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
+
+	timer := prometheus.NewTimer(prometheus.ObserverFunc(func(v float64) {
+		us := v * 1000000 // make microseconds
+		timeCounterSummary.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(us)
+		timeCounterHistogram.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(v)
+	}))
+	defer timer.ObserveDuration()
+
+	err := w.Client.Call(ctx, req, rsp, opts...)
+	if err == nil {
+		opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "success").Inc()
+	} else {
+		opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "failure").Inc()
+	}
+
+	return err
+}
+
+func (w *wrapper) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
+	endpoint := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
+
+	timer := prometheus.NewTimer(prometheus.ObserverFunc(func(v float64) {
+		us := v * 1000000 // make microseconds
+		timeCounterSummary.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(us)
+		timeCounterHistogram.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(v)
+	}))
+	defer timer.ObserveDuration()
+
+	stream, err := w.Client.Stream(ctx, req, opts...)
+	if err == nil {
+		opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "success").Inc()
+	} else {
+		opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "failure").Inc()
+	}
+
+	return stream, err
+}
+
+func (w *wrapper) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
+	endpoint := p.Topic()
+
+	timer := prometheus.NewTimer(prometheus.ObserverFunc(func(v float64) {
+		us := v * 1000000 // make microseconds
+		timeCounterSummary.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(us)
+		timeCounterHistogram.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(v)
+	}))
+	defer timer.ObserveDuration()
+
+	err := w.Client.Publish(ctx, p, opts...)
+	if err == nil {
+		opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "success").Inc()
+	} else {
+		opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "failure").Inc()
+	}
+
+	return err
+}
+
+func NewHandlerWrapper(opts ...Option) server.HandlerWrapper {
+	options := Options{}
+	for _, opt := range opts {
+		opt(&options)
+	}
+
+	handler := &wrapper{
+		options: options,
+	}
+
+	return handler.HandlerFunc
+}
+
+func (w *wrapper) HandlerFunc(fn server.HandlerFunc) server.HandlerFunc {
+	return func(ctx context.Context, req server.Request, rsp interface{}) error {
+		endpoint := req.Endpoint()
+
+		timer := prometheus.NewTimer(prometheus.ObserverFunc(func(v float64) {
+			us := v * 1000000 // make microseconds
+			timeCounterSummary.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(us)
+			timeCounterHistogram.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(v)
+		}))
+		defer timer.ObserveDuration()
+
+		err := fn(ctx, req, rsp)
+		if err == nil {
+			opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "success").Inc()
+		} else {
+			opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "failure").Inc()
+		}
+
+		return err
+	}
+}
+
+func NewSubscriberWrapper(opts ...Option) server.SubscriberWrapper {
+	options := Options{}
+	for _, opt := range opts {
+		opt(&options)
+	}
+
+	handler := &wrapper{
+		options: options,
+	}
+
+	return handler.SubscriberFunc
+}
+
+func (w *wrapper) SubscriberFunc(fn server.SubscriberFunc) server.SubscriberFunc {
+	return func(ctx context.Context, msg server.Message) error {
+		endpoint := msg.Topic()
+
+		timer := prometheus.NewTimer(prometheus.ObserverFunc(func(v float64) {
+			us := v * 1000000 // make microseconds
+			timeCounterSummary.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(us)
+			timeCounterHistogram.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint).Observe(v)
+		}))
+		defer timer.ObserveDuration()
+
+		err := fn(ctx, msg)
+		if err == nil {
+			opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "success").Inc()
+		} else {
+			opsCounter.WithLabelValues(w.options.Name, w.options.Version, w.options.ID, endpoint, "failure").Inc()
+		}
+
+		return err
+	}
+}

Server/vendor/github.com/go-micro/plugins/v4/wrapper/trace/opentelemetry/LICENSE

@@ -0,0 +1,191 @@
+
+                                 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
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      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
+
+   Copyright 2015 Asim Aslam.
+
+   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.

Server/vendor/github.com/go-micro/plugins/v4/wrapper/trace/opentelemetry/README.md

@@ -0,0 +1,14 @@
+# OpenTelemetry wrappers
+
+OpenTelemetry wrappers propagate traces (spans) accross services.
+
+## Usage
+
+```go
+service := micro.NewService(
+    micro.Name("go.micro.srv.greeter"),
+    micro.WrapClient(opentelemetry.NewClientWrapper()),
+    micro.WrapHandler(open.NewHandlerWrapper()),
+    micro.WrapSubscriber(opentelemetry.NewSubscriberWrapper()),
+)
+```

Server/vendor/github.com/go-micro/plugins/v4/wrapper/trace/opentelemetry/opentelemetry.go

@@ -0,0 +1,55 @@
+package opentelemetry
+
+import (
+	"context"
+	"strings"
+
+	"go-micro.dev/v4/metadata"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/baggage"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/trace"
+)
+
+const (
+	instrumentationName = "github.com/go-micro/plugins/v4/wrapper/trace/opentelemetry"
+)
+
+// StartSpanFromContext returns a new span with the given operation name and options. If a span
+// is found in the context, it will be used as the parent of the resulting span.
+func StartSpanFromContext(ctx context.Context, tp trace.TracerProvider, name string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
+	md, ok := metadata.FromContext(ctx)
+	if !ok {
+		md = make(metadata.Metadata)
+	}
+	propagator, carrier := otel.GetTextMapPropagator(), make(propagation.MapCarrier)
+	for k, v := range md {
+		for _, f := range propagator.Fields() {
+			if strings.EqualFold(k, f) {
+				carrier[f] = v
+			}
+		}
+	}
+	ctx = propagator.Extract(ctx, carrier)
+	spanCtx := trace.SpanContextFromContext(ctx)
+	ctx = baggage.ContextWithBaggage(ctx, baggage.FromContext(ctx))
+
+	var tracer trace.Tracer
+	var span trace.Span
+	if tp != nil {
+		tracer = tp.Tracer(instrumentationName)
+	} else {
+		tracer = otel.Tracer(instrumentationName)
+	}
+	ctx, span = tracer.Start(trace.ContextWithRemoteSpanContext(ctx, spanCtx), name, opts...)
+
+	carrier = make(propagation.MapCarrier)
+	propagator.Inject(ctx, carrier)
+	for k, v := range carrier {
+		//lint:ignore SA1019 no unicode punctution handle needed
+		md.Set(strings.Title(k), v)
+	}
+	ctx = metadata.NewContext(ctx, md)
+
+	return ctx, span
+}

Server/vendor/github.com/go-micro/plugins/v4/wrapper/trace/opentelemetry/options.go

@@ -0,0 +1,72 @@
+package opentelemetry
+
+import (
+	"context"
+
+	"go-micro.dev/v4/client"
+	"go-micro.dev/v4/server"
+	"go.opentelemetry.io/otel/trace"
+)
+
+type Options struct {
+	TraceProvider trace.TracerProvider
+
+	CallFilter       CallFilter
+	StreamFilter     StreamFilter
+	PublishFilter    PublishFilter
+	SubscriberFilter SubscriberFilter
+	HandlerFilter    HandlerFilter
+}
+
+// CallFilter used to filter client.Call, return true to skip call trace.
+type CallFilter func(context.Context, client.Request) bool
+
+// StreamFilter used to filter client.Stream, return true to skip stream trace.
+type StreamFilter func(context.Context, client.Request) bool
+
+// PublishFilter used to filter client.Publish, return true to skip publish trace.
+type PublishFilter func(context.Context, client.Message) bool
+
+// SubscriberFilter used to filter server.Subscribe, return true to skip subcribe trace.
+type SubscriberFilter func(context.Context, server.Message) bool
+
+// HandlerFilter used to filter server.Handle, return true to skip handle trace.
+type HandlerFilter func(context.Context, server.Request) bool
+
+type Option func(*Options)
+
+func WithTraceProvider(tp trace.TracerProvider) Option {
+	return func(o *Options) {
+		o.TraceProvider = tp
+	}
+}
+
+func WithCallFilter(filter CallFilter) Option {
+	return func(o *Options) {
+		o.CallFilter = filter
+	}
+}
+
+func WithStreamFilter(filter StreamFilter) Option {
+	return func(o *Options) {
+		o.StreamFilter = filter
+	}
+}
+
+func WithPublishFilter(filter PublishFilter) Option {
+	return func(o *Options) {
+		o.PublishFilter = filter
+	}
+}
+
+func WithSubscribeFilter(filter SubscriberFilter) Option {
+	return func(o *Options) {
+		o.SubscriberFilter = filter
+	}
+}
+
+func WithHandleFilter(filter HandlerFilter) Option {
+	return func(o *Options) {
+		o.HandlerFilter = filter
+	}
+}

Server/vendor/github.com/go-micro/plugins/v4/wrapper/trace/opentelemetry/wrapper.go

@@ -0,0 +1,175 @@
+package opentelemetry
+
+import (
+	"context"
+	"fmt"
+
+	"go-micro.dev/v4/client"
+	"go-micro.dev/v4/registry"
+	"go-micro.dev/v4/server"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// NewCallWrapper accepts an opentracing Tracer and returns a Call Wrapper.
+func NewCallWrapper(opts ...Option) client.CallWrapper {
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return func(cf client.CallFunc) client.CallFunc {
+		return func(ctx context.Context, node *registry.Node, req client.Request, rsp interface{}, opts client.CallOptions) error {
+			if options.CallFilter != nil && options.CallFilter(ctx, req) {
+				return cf(ctx, node, req, rsp, opts)
+			}
+			name := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
+			spanOpts := []trace.SpanStartOption{
+				trace.WithSpanKind(trace.SpanKindClient),
+			}
+			ctx, span := StartSpanFromContext(ctx, options.TraceProvider, name, spanOpts...)
+			defer span.End()
+			if err := cf(ctx, node, req, rsp, opts); err != nil {
+				span.SetStatus(codes.Error, err.Error())
+				span.RecordError(err)
+				return err
+			}
+			return nil
+		}
+	}
+}
+
+// NewHandlerWrapper accepts an opentracing Tracer and returns a Handler Wrapper.
+func NewHandlerWrapper(opts ...Option) server.HandlerWrapper {
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return func(h server.HandlerFunc) server.HandlerFunc {
+		return func(ctx context.Context, req server.Request, rsp interface{}) error {
+			if options.HandlerFilter != nil && options.HandlerFilter(ctx, req) {
+				return h(ctx, req, rsp)
+			}
+			name := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
+			spanOpts := []trace.SpanStartOption{
+				trace.WithSpanKind(trace.SpanKindServer),
+			}
+			ctx, span := StartSpanFromContext(ctx, options.TraceProvider, name, spanOpts...)
+			defer span.End()
+			if err := h(ctx, req, rsp); err != nil {
+				span.SetStatus(codes.Error, err.Error())
+				span.RecordError(err)
+				return err
+			}
+			return nil
+		}
+	}
+}
+
+// NewSubscriberWrapper accepts an opentracing Tracer and returns a Subscriber Wrapper.
+func NewSubscriberWrapper(opts ...Option) server.SubscriberWrapper {
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return func(next server.SubscriberFunc) server.SubscriberFunc {
+		return func(ctx context.Context, msg server.Message) error {
+			if options.SubscriberFilter != nil && options.SubscriberFilter(ctx, msg) {
+				return next(ctx, msg)
+			}
+			name := "Sub from " + msg.Topic()
+			spanOpts := []trace.SpanStartOption{
+				trace.WithSpanKind(trace.SpanKindServer),
+			}
+			ctx, span := StartSpanFromContext(ctx, options.TraceProvider, name, spanOpts...)
+			defer span.End()
+			if err := next(ctx, msg); err != nil {
+				span.SetStatus(codes.Error, err.Error())
+				span.RecordError(err)
+				return err
+			}
+			return nil
+		}
+	}
+}
+
+// NewClientWrapper returns a client.Wrapper
+// that adds monitoring to outgoing requests.
+func NewClientWrapper(opts ...Option) client.Wrapper {
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return func(c client.Client) client.Client {
+		w := &clientWrapper{
+			Client:        c,
+			tp:            options.TraceProvider,
+			callFilter:    options.CallFilter,
+			streamFilter:  options.StreamFilter,
+			publishFilter: options.PublishFilter,
+		}
+		return w
+	}
+}
+
+type clientWrapper struct {
+	client.Client
+
+	tp            trace.TracerProvider
+	callFilter    CallFilter
+	streamFilter  StreamFilter
+	publishFilter PublishFilter
+}
+
+func (w *clientWrapper) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
+	if w.callFilter != nil && w.callFilter(ctx, req) {
+		return w.Client.Call(ctx, req, rsp, opts...)
+	}
+	name := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
+	spanOpts := []trace.SpanStartOption{
+		trace.WithSpanKind(trace.SpanKindClient),
+	}
+	ctx, span := StartSpanFromContext(ctx, w.tp, name, spanOpts...)
+	defer span.End()
+	if err := w.Client.Call(ctx, req, rsp, opts...); err != nil {
+		span.SetStatus(codes.Error, err.Error())
+		span.RecordError(err)
+		return err
+	}
+	return nil
+}
+
+func (w *clientWrapper) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
+	if w.streamFilter != nil && w.streamFilter(ctx, req) {
+		return w.Client.Stream(ctx, req, opts...)
+	}
+	name := fmt.Sprintf("%s.%s", req.Service(), req.Endpoint())
+	spanOpts := []trace.SpanStartOption{
+		trace.WithSpanKind(trace.SpanKindClient),
+	}
+	ctx, span := StartSpanFromContext(ctx, w.tp, name, spanOpts...)
+	defer span.End()
+	stream, err := w.Client.Stream(ctx, req, opts...)
+	if err != nil {
+		span.SetStatus(codes.Error, err.Error())
+		span.RecordError(err)
+	}
+	return stream, err
+}
+
+func (w *clientWrapper) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
+	if w.publishFilter != nil && w.publishFilter(ctx, p) {
+		return w.Client.Publish(ctx, p, opts...)
+	}
+	name := fmt.Sprintf("Pub to %s", p.Topic())
+	spanOpts := []trace.SpanStartOption{
+		trace.WithSpanKind(trace.SpanKindClient),
+	}
+	ctx, span := StartSpanFromContext(ctx, w.tp, name, spanOpts...)
+	defer span.End()
+	if err := w.Client.Publish(ctx, p, opts...); err != nil {
+		span.SetStatus(codes.Error, err.Error())
+		span.RecordError(err)
+		return err
+	}
+	return nil
+}