Initial QSfera import
This commit is contained in:
Курнат Андрей
+191
@@ -0,0 +1,191 @@
|
||||
|
||||
Apache License
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Version 2.0, January 2004
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http://www.apache.org/licenses/
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|
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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1. Definitions.
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END OF TERMS AND CONDITIONS
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Copyright 2015 Asim Aslam.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
|
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+65
@@ -0,0 +1,65 @@
|
||||
# HTTP Server
|
||||
|
||||
The HTTP Server is a go-micro.Server. It's a partial implementation which strips out codecs, transports, etc but enables you
|
||||
to create a HTTP Server that could potentially be used for REST based API services.
|
||||
|
||||
## Usage
|
||||
|
||||
```go
|
||||
import (
|
||||
"net/http"
|
||||
|
||||
"github.com/micro/go-micro/server"
|
||||
httpServer "github.com/go-micro/plugins/v4/server/http"
|
||||
)
|
||||
|
||||
func main() {
|
||||
srv := httpServer.NewServer(
|
||||
server.Name("helloworld"),
|
||||
)
|
||||
|
||||
mux := http.NewServeMux()
|
||||
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
|
||||
w.Write([]byte(`hello world`))
|
||||
})
|
||||
|
||||
hd := srv.NewHandler(mux)
|
||||
|
||||
srv.Handle(hd)
|
||||
srv.Start()
|
||||
srv.Register()
|
||||
}
|
||||
```
|
||||
|
||||
Or as part of a service
|
||||
|
||||
```go
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||||
import (
|
||||
"net/http"
|
||||
|
||||
"go-micro.dev/v4"
|
||||
"github.com/micro/go-micro/server"
|
||||
httpServer "github.com/go-micro/plugins/v4/server/http"
|
||||
)
|
||||
|
||||
func main() {
|
||||
srv := httpServer.NewServer(
|
||||
server.Name("helloworld"),
|
||||
)
|
||||
|
||||
mux := http.NewServeMux()
|
||||
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
|
||||
w.Write([]byte(`hello world`))
|
||||
})
|
||||
|
||||
hd := srv.NewHandler(mux)
|
||||
|
||||
srv.Handle(hd)
|
||||
|
||||
service := micro.NewService(
|
||||
micro.Server(srv),
|
||||
)
|
||||
service.Init()
|
||||
service.Run()
|
||||
}
|
||||
```
|
||||
+14
@@ -0,0 +1,14 @@
|
||||
package http
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||||
|
||||
import (
|
||||
"bytes"
|
||||
)
|
||||
|
||||
type buffer struct {
|
||||
*bytes.Buffer
|
||||
}
|
||||
|
||||
func (b *buffer) Close() error {
|
||||
b.Buffer.Reset()
|
||||
return nil
|
||||
}
|
||||
+16
@@ -0,0 +1,16 @@
|
||||
package http
|
||||
|
||||
import (
|
||||
"context"
|
||||
|
||||
"go-micro.dev/v4/server"
|
||||
)
|
||||
|
||||
func setServerOption(k, v interface{}) server.Option {
|
||||
return func(o *server.Options) {
|
||||
if o.Context == nil {
|
||||
o.Context = context.Background()
|
||||
}
|
||||
o.Context = context.WithValue(o.Context, k, v)
|
||||
}
|
||||
}
|
||||
+165
@@ -0,0 +1,165 @@
|
||||
package http
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net"
|
||||
"reflect"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"go-micro.dev/v4/registry"
|
||||
"go-micro.dev/v4/server"
|
||||
"go-micro.dev/v4/util/addr"
|
||||
)
|
||||
|
||||
func serviceDef(opts server.Options) *registry.Service {
|
||||
var advt, host string
|
||||
var port int
|
||||
|
||||
if len(opts.Advertise) > 0 {
|
||||
advt = opts.Advertise
|
||||
} else {
|
||||
advt = opts.Address
|
||||
}
|
||||
|
||||
parts := strings.Split(advt, ":")
|
||||
if len(parts) > 1 {
|
||||
host = strings.Join(parts[:len(parts)-1], ":")
|
||||
port, _ = strconv.Atoi(parts[len(parts)-1])
|
||||
} else {
|
||||
host = parts[0]
|
||||
}
|
||||
|
||||
addr, err := addr.Extract(host)
|
||||
if err != nil {
|
||||
addr = host
|
||||
}
|
||||
|
||||
node := ®istry.Node{
|
||||
Id: opts.Name + "-" + opts.Id,
|
||||
Address: net.JoinHostPort(addr, fmt.Sprint(port)),
|
||||
Metadata: opts.Metadata,
|
||||
}
|
||||
|
||||
node.Metadata["server"] = "http"
|
||||
node.Metadata["broker"] = opts.Broker.String()
|
||||
node.Metadata["registry"] = opts.Registry.String()
|
||||
node.Metadata["protocol"] = "http"
|
||||
|
||||
return ®istry.Service{
|
||||
Name: opts.Name,
|
||||
Version: opts.Version,
|
||||
Nodes: []*registry.Node{node},
|
||||
}
|
||||
}
|
||||
|
||||
func extractValue(v reflect.Type, d int) *registry.Value {
|
||||
if d == 3 {
|
||||
return nil
|
||||
}
|
||||
if v == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
if v.Kind() == reflect.Ptr {
|
||||
v = v.Elem()
|
||||
}
|
||||
|
||||
arg := ®istry.Value{
|
||||
Name: v.Name(),
|
||||
Type: v.Name(),
|
||||
}
|
||||
|
||||
switch v.Kind() {
|
||||
case reflect.Struct:
|
||||
for i := 0; i < v.NumField(); i++ {
|
||||
f := v.Field(i)
|
||||
if f.PkgPath != "" {
|
||||
continue
|
||||
}
|
||||
val := extractValue(f.Type, d+1)
|
||||
if val == nil {
|
||||
continue
|
||||
}
|
||||
|
||||
// if we can find a json tag use it
|
||||
if tags := f.Tag.Get("json"); len(tags) > 0 {
|
||||
parts := strings.Split(tags, ",")
|
||||
val.Name = parts[0]
|
||||
}
|
||||
|
||||
// if there's no name default it
|
||||
if len(val.Name) == 0 {
|
||||
val.Name = v.Field(i).Name
|
||||
}
|
||||
|
||||
arg.Values = append(arg.Values, val)
|
||||
}
|
||||
case reflect.Slice:
|
||||
p := v.Elem()
|
||||
if p.Kind() == reflect.Ptr {
|
||||
p = p.Elem()
|
||||
}
|
||||
arg.Type = "[]" + p.Name()
|
||||
val := extractValue(v.Elem(), d+1)
|
||||
if val != nil {
|
||||
arg.Values = append(arg.Values, val)
|
||||
}
|
||||
}
|
||||
|
||||
return arg
|
||||
}
|
||||
|
||||
func extractEndpoint(method reflect.Method) *registry.Endpoint {
|
||||
if method.PkgPath != "" {
|
||||
return nil
|
||||
}
|
||||
|
||||
var rspType, reqType reflect.Type
|
||||
var stream bool
|
||||
mt := method.Type
|
||||
|
||||
switch mt.NumIn() {
|
||||
case 3:
|
||||
reqType = mt.In(1)
|
||||
rspType = mt.In(2)
|
||||
case 4:
|
||||
reqType = mt.In(2)
|
||||
rspType = mt.In(3)
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
|
||||
// are we dealing with a stream?
|
||||
switch rspType.Kind() {
|
||||
case reflect.Func, reflect.Interface:
|
||||
stream = true
|
||||
}
|
||||
|
||||
request := extractValue(reqType, 0)
|
||||
response := extractValue(rspType, 0)
|
||||
|
||||
return ®istry.Endpoint{
|
||||
Name: method.Name,
|
||||
Request: request,
|
||||
Response: response,
|
||||
Metadata: map[string]string{
|
||||
"stream": fmt.Sprintf("%v", stream),
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
func extractSubValue(typ reflect.Type) *registry.Value {
|
||||
var reqType reflect.Type
|
||||
switch typ.NumIn() {
|
||||
case 1:
|
||||
reqType = typ.In(0)
|
||||
case 2:
|
||||
reqType = typ.In(1)
|
||||
case 3:
|
||||
reqType = typ.In(2)
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
return extractValue(reqType, 0)
|
||||
}
|
||||
+28
@@ -0,0 +1,28 @@
|
||||
package http
|
||||
|
||||
import (
|
||||
"go-micro.dev/v4/registry"
|
||||
"go-micro.dev/v4/server"
|
||||
)
|
||||
|
||||
type httpHandler struct {
|
||||
opts server.HandlerOptions
|
||||
eps []*registry.Endpoint
|
||||
hd interface{}
|
||||
}
|
||||
|
||||
func (h *httpHandler) Name() string {
|
||||
return "handler"
|
||||
}
|
||||
|
||||
func (h *httpHandler) Handler() interface{} {
|
||||
return h.hd
|
||||
}
|
||||
|
||||
func (h *httpHandler) Endpoints() []*registry.Endpoint {
|
||||
return h.eps
|
||||
}
|
||||
|
||||
func (h *httpHandler) Options() server.HandlerOptions {
|
||||
return h.opts
|
||||
}
|
||||
+364
@@ -0,0 +1,364 @@
|
||||
// Package http implements a go-micro.Server
|
||||
package http
|
||||
|
||||
import (
|
||||
"crypto/tls"
|
||||
"errors"
|
||||
"fmt"
|
||||
"net"
|
||||
"net/http"
|
||||
"sort"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"go-micro.dev/v4/broker"
|
||||
"go-micro.dev/v4/codec"
|
||||
"go-micro.dev/v4/codec/jsonrpc"
|
||||
"go-micro.dev/v4/codec/protorpc"
|
||||
"go-micro.dev/v4/logger"
|
||||
"go-micro.dev/v4/registry"
|
||||
"go-micro.dev/v4/server"
|
||||
"go-micro.dev/v4/util/cmd"
|
||||
)
|
||||
|
||||
var (
|
||||
defaultCodecs = map[string]codec.NewCodec{
|
||||
"application/json": jsonrpc.NewCodec,
|
||||
"application/json-rpc": jsonrpc.NewCodec,
|
||||
"application/protobuf": protorpc.NewCodec,
|
||||
"application/proto-rpc": protorpc.NewCodec,
|
||||
"application/octet-stream": protorpc.NewCodec,
|
||||
}
|
||||
)
|
||||
|
||||
type httpServer struct {
|
||||
sync.Mutex
|
||||
opts server.Options
|
||||
hd server.Handler
|
||||
exit chan chan error
|
||||
registerOnce sync.Once
|
||||
subscribers map[*httpSubscriber][]broker.Subscriber
|
||||
// used for first registration
|
||||
registered bool
|
||||
}
|
||||
|
||||
func init() {
|
||||
cmd.DefaultServers["http"] = NewServer
|
||||
}
|
||||
|
||||
func (h *httpServer) newCodec(contentType string) (codec.NewCodec, error) {
|
||||
if cf, ok := h.opts.Codecs[contentType]; ok {
|
||||
return cf, nil
|
||||
}
|
||||
if cf, ok := defaultCodecs[contentType]; ok {
|
||||
return cf, nil
|
||||
}
|
||||
return nil, fmt.Errorf("Unsupported Content-Type: %s", contentType)
|
||||
}
|
||||
|
||||
func (h *httpServer) getListener() net.Listener {
|
||||
if h.opts.Context == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
if l, ok := h.opts.Context.Value(netListener{}).(net.Listener); ok && l != nil {
|
||||
return l
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *httpServer) Options() server.Options {
|
||||
h.Lock()
|
||||
opts := h.opts
|
||||
h.Unlock()
|
||||
return opts
|
||||
}
|
||||
|
||||
func (h *httpServer) Init(opts ...server.Option) error {
|
||||
h.Lock()
|
||||
for _, o := range opts {
|
||||
o(&h.opts)
|
||||
}
|
||||
h.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *httpServer) Handle(handler server.Handler) error {
|
||||
if _, ok := handler.Handler().(http.Handler); !ok {
|
||||
return errors.New("Handle requires http.Handler")
|
||||
}
|
||||
h.Lock()
|
||||
h.hd = handler
|
||||
h.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *httpServer) NewHandler(handler interface{}, opts ...server.HandlerOption) server.Handler {
|
||||
options := server.HandlerOptions{
|
||||
Metadata: make(map[string]map[string]string),
|
||||
}
|
||||
|
||||
for _, o := range opts {
|
||||
o(&options)
|
||||
}
|
||||
|
||||
var eps []*registry.Endpoint
|
||||
|
||||
if !options.Internal {
|
||||
for name, metadata := range options.Metadata {
|
||||
eps = append(eps, ®istry.Endpoint{
|
||||
Name: name,
|
||||
Metadata: metadata,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
return &httpHandler{
|
||||
eps: eps,
|
||||
hd: handler,
|
||||
opts: options,
|
||||
}
|
||||
}
|
||||
|
||||
func (h *httpServer) NewSubscriber(topic string, handler interface{}, opts ...server.SubscriberOption) server.Subscriber {
|
||||
return newSubscriber(topic, handler, opts...)
|
||||
}
|
||||
|
||||
func (h *httpServer) Subscribe(sb server.Subscriber) error {
|
||||
sub, ok := sb.(*httpSubscriber)
|
||||
if !ok {
|
||||
return fmt.Errorf("invalid subscriber: expected *httpSubscriber")
|
||||
}
|
||||
if len(sub.handlers) == 0 {
|
||||
return fmt.Errorf("invalid subscriber: no handler functions")
|
||||
}
|
||||
|
||||
if err := validateSubscriber(sb); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
h.Lock()
|
||||
defer h.Unlock()
|
||||
_, ok = h.subscribers[sub]
|
||||
if ok {
|
||||
return fmt.Errorf("subscriber %v already exists", h)
|
||||
}
|
||||
h.subscribers[sub] = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *httpServer) Register() error {
|
||||
h.Lock()
|
||||
opts := h.opts
|
||||
eps := h.hd.Endpoints()
|
||||
h.Unlock()
|
||||
|
||||
service := serviceDef(opts)
|
||||
service.Endpoints = eps
|
||||
|
||||
h.Lock()
|
||||
var subscriberList []*httpSubscriber
|
||||
for e := range h.subscribers {
|
||||
// Only advertise non internal subscribers
|
||||
if !e.Options().Internal {
|
||||
subscriberList = append(subscriberList, e)
|
||||
}
|
||||
}
|
||||
sort.Slice(subscriberList, func(i, j int) bool {
|
||||
return subscriberList[i].topic > subscriberList[j].topic
|
||||
})
|
||||
for _, e := range subscriberList {
|
||||
service.Endpoints = append(service.Endpoints, e.Endpoints()...)
|
||||
}
|
||||
h.Unlock()
|
||||
|
||||
rOpts := []registry.RegisterOption{
|
||||
registry.RegisterTTL(opts.RegisterTTL),
|
||||
}
|
||||
|
||||
h.registerOnce.Do(func() {
|
||||
opts.Logger.Logf(logger.InfoLevel, "Registering node: %s", opts.Name+"-"+opts.Id)
|
||||
})
|
||||
|
||||
if err := opts.Registry.Register(service, rOpts...); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
h.Lock()
|
||||
defer h.Unlock()
|
||||
|
||||
if h.registered {
|
||||
return nil
|
||||
}
|
||||
h.registered = true
|
||||
|
||||
for sb := range h.subscribers {
|
||||
handler := h.createSubHandler(sb, opts)
|
||||
var subOpts []broker.SubscribeOption
|
||||
if queue := sb.Options().Queue; len(queue) > 0 {
|
||||
subOpts = append(subOpts, broker.Queue(queue))
|
||||
}
|
||||
|
||||
if cx := sb.Options().Context; cx != nil {
|
||||
subOpts = append(subOpts, broker.SubscribeContext(cx))
|
||||
}
|
||||
|
||||
if !sb.Options().AutoAck {
|
||||
subOpts = append(subOpts, broker.DisableAutoAck())
|
||||
}
|
||||
|
||||
sub, err := opts.Broker.Subscribe(sb.Topic(), handler, subOpts...)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
h.subscribers[sb] = []broker.Subscriber{sub}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *httpServer) Deregister() error {
|
||||
h.Lock()
|
||||
opts := h.opts
|
||||
h.Unlock()
|
||||
|
||||
opts.Logger.Logf(logger.InfoLevel, "Deregistering node: %s", opts.Name+"-"+opts.Id)
|
||||
|
||||
service := serviceDef(opts)
|
||||
if err := opts.Registry.Deregister(service); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
h.Lock()
|
||||
|
||||
if !h.registered {
|
||||
h.Unlock()
|
||||
return nil
|
||||
}
|
||||
h.registered = false
|
||||
|
||||
wg := sync.WaitGroup{}
|
||||
for sb, subs := range h.subscribers {
|
||||
for _, sub := range subs {
|
||||
wg.Add(1)
|
||||
go func(s broker.Subscriber) {
|
||||
defer wg.Done()
|
||||
opts.Logger.Logf(logger.InfoLevel, "Unsubscribing from topic: %s", s.Topic())
|
||||
s.Unsubscribe()
|
||||
}(sub)
|
||||
}
|
||||
h.subscribers[sb] = nil
|
||||
}
|
||||
|
||||
wg.Wait()
|
||||
h.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *httpServer) Start() error {
|
||||
h.Lock()
|
||||
opts := h.opts
|
||||
hd := h.hd
|
||||
h.Unlock()
|
||||
|
||||
var (
|
||||
ln net.Listener
|
||||
err error
|
||||
)
|
||||
|
||||
if l := h.getListener(); l != nil {
|
||||
ln = l
|
||||
} else if opts.TLSConfig != nil {
|
||||
ln, err = tls.Listen("tcp", opts.Address, opts.TLSConfig)
|
||||
} else {
|
||||
ln, err = net.Listen("tcp", opts.Address)
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
opts.Logger.Logf(logger.InfoLevel, "Listening on %s", ln.Addr().String())
|
||||
|
||||
h.Lock()
|
||||
h.opts.Address = ln.Addr().String()
|
||||
h.Unlock()
|
||||
|
||||
handler, ok := hd.Handler().(http.Handler)
|
||||
if !ok {
|
||||
return errors.New("Server required http.Handler")
|
||||
}
|
||||
|
||||
if err = opts.Broker.Connect(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// register
|
||||
if err = h.Register(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
go http.Serve(ln, handler)
|
||||
|
||||
go func() {
|
||||
t := new(time.Ticker)
|
||||
|
||||
// only process if it exists
|
||||
if opts.RegisterInterval > time.Duration(0) {
|
||||
// new ticker
|
||||
t = time.NewTicker(opts.RegisterInterval)
|
||||
}
|
||||
|
||||
// return error chan
|
||||
var ch chan error
|
||||
|
||||
Loop:
|
||||
for {
|
||||
select {
|
||||
// register self on interval
|
||||
case <-t.C:
|
||||
if err := h.Register(); err != nil {
|
||||
opts.Logger.Log(logger.ErrorLevel, "Server register error: ", err)
|
||||
}
|
||||
// wait for exit
|
||||
case ch = <-h.exit:
|
||||
break Loop
|
||||
}
|
||||
}
|
||||
|
||||
// deregister
|
||||
h.Deregister()
|
||||
|
||||
opts.Broker.Disconnect()
|
||||
|
||||
// Solve the problem of early exit
|
||||
ch <- ln.Close()
|
||||
}()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *httpServer) Stop() error {
|
||||
ch := make(chan error)
|
||||
h.exit <- ch
|
||||
return <-ch
|
||||
}
|
||||
|
||||
func (h *httpServer) String() string {
|
||||
if h.opts.TLSConfig != nil {
|
||||
return "https"
|
||||
}
|
||||
return "http"
|
||||
}
|
||||
|
||||
func newServer(opts ...server.Option) server.Server {
|
||||
return &httpServer{
|
||||
opts: newOptions(opts...),
|
||||
exit: make(chan chan error),
|
||||
subscribers: make(map[*httpSubscriber][]broker.Subscriber),
|
||||
}
|
||||
}
|
||||
|
||||
func NewServer(opts ...server.Option) server.Server {
|
||||
return newServer(opts...)
|
||||
}
|
||||
+36
@@ -0,0 +1,36 @@
|
||||
package http
|
||||
|
||||
import "go-micro.dev/v4/codec"
|
||||
|
||||
type httpMessage struct {
|
||||
topic string
|
||||
payload interface{}
|
||||
contentType string
|
||||
header map[string]string
|
||||
body []byte
|
||||
codec codec.Reader
|
||||
}
|
||||
|
||||
func (r *httpMessage) Topic() string {
|
||||
return r.topic
|
||||
}
|
||||
|
||||
func (r *httpMessage) Payload() interface{} {
|
||||
return r.payload
|
||||
}
|
||||
|
||||
func (r *httpMessage) ContentType() string {
|
||||
return r.contentType
|
||||
}
|
||||
|
||||
func (r *httpMessage) Header() map[string]string {
|
||||
return r.header
|
||||
}
|
||||
|
||||
func (r *httpMessage) Body() []byte {
|
||||
return r.body
|
||||
}
|
||||
|
||||
func (r *httpMessage) Codec() codec.Reader {
|
||||
return r.codec
|
||||
}
|
||||
+61
@@ -0,0 +1,61 @@
|
||||
package http
|
||||
|
||||
import (
|
||||
"context"
|
||||
"net"
|
||||
|
||||
"go-micro.dev/v4/broker"
|
||||
"go-micro.dev/v4/codec"
|
||||
"go-micro.dev/v4/logger"
|
||||
"go-micro.dev/v4/registry"
|
||||
"go-micro.dev/v4/server"
|
||||
)
|
||||
|
||||
type netListener struct{}
|
||||
|
||||
func newOptions(opt ...server.Option) server.Options {
|
||||
opts := server.Options{
|
||||
Codecs: make(map[string]codec.NewCodec),
|
||||
Metadata: map[string]string{},
|
||||
Context: context.Background(),
|
||||
}
|
||||
|
||||
for _, o := range opt {
|
||||
o(&opts)
|
||||
}
|
||||
|
||||
if opts.Logger == nil {
|
||||
opts.Logger = logger.DefaultLogger
|
||||
}
|
||||
|
||||
if opts.Broker == nil {
|
||||
opts.Broker = broker.DefaultBroker
|
||||
}
|
||||
|
||||
if opts.Registry == nil {
|
||||
opts.Registry = registry.DefaultRegistry
|
||||
}
|
||||
|
||||
if len(opts.Address) == 0 {
|
||||
opts.Address = server.DefaultAddress
|
||||
}
|
||||
|
||||
if len(opts.Name) == 0 {
|
||||
opts.Name = server.DefaultName
|
||||
}
|
||||
|
||||
if len(opts.Id) == 0 {
|
||||
opts.Id = server.DefaultId
|
||||
}
|
||||
|
||||
if len(opts.Version) == 0 {
|
||||
opts.Version = server.DefaultVersion
|
||||
}
|
||||
|
||||
return opts
|
||||
}
|
||||
|
||||
// Listener specifies the net.Listener to use instead of the default.
|
||||
func Listener(l net.Listener) server.Option {
|
||||
return setServerOption(netListener{}, l)
|
||||
}
|
||||
+298
@@ -0,0 +1,298 @@
|
||||
package http
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strings"
|
||||
"unicode"
|
||||
"unicode/utf8"
|
||||
|
||||
"go-micro.dev/v4/broker"
|
||||
"go-micro.dev/v4/codec"
|
||||
"go-micro.dev/v4/metadata"
|
||||
"go-micro.dev/v4/registry"
|
||||
"go-micro.dev/v4/server"
|
||||
)
|
||||
|
||||
const (
|
||||
subSig = "func(context.Context, interface{}) error"
|
||||
)
|
||||
|
||||
var typeOfError = reflect.TypeOf((*error)(nil)).Elem()
|
||||
|
||||
type handler struct {
|
||||
method reflect.Value
|
||||
reqType reflect.Type
|
||||
ctxType reflect.Type
|
||||
}
|
||||
|
||||
type httpSubscriber struct {
|
||||
topic string
|
||||
rcvr reflect.Value
|
||||
typ reflect.Type
|
||||
subscriber interface{}
|
||||
handlers []*handler
|
||||
endpoints []*registry.Endpoint
|
||||
opts server.SubscriberOptions
|
||||
}
|
||||
|
||||
// Is this an exported - upper case - name?
|
||||
func isExported(name string) bool {
|
||||
rune, _ := utf8.DecodeRuneInString(name)
|
||||
return unicode.IsUpper(rune)
|
||||
}
|
||||
|
||||
// Is this type exported or a builtin?
|
||||
func isExportedOrBuiltinType(t reflect.Type) bool {
|
||||
for t.Kind() == reflect.Ptr {
|
||||
t = t.Elem()
|
||||
}
|
||||
// PkgPath will be non-empty even for an exported type,
|
||||
// so we need to check the type name as well.
|
||||
return isExported(t.Name()) || t.PkgPath() == ""
|
||||
}
|
||||
|
||||
func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOption) server.Subscriber {
|
||||
options := server.SubscriberOptions{
|
||||
AutoAck: true,
|
||||
}
|
||||
|
||||
for _, o := range opts {
|
||||
o(&options)
|
||||
}
|
||||
|
||||
var endpoints []*registry.Endpoint
|
||||
var handlers []*handler
|
||||
|
||||
if typ := reflect.TypeOf(sub); typ.Kind() == reflect.Func {
|
||||
h := &handler{
|
||||
method: reflect.ValueOf(sub),
|
||||
}
|
||||
|
||||
switch typ.NumIn() {
|
||||
case 1:
|
||||
h.reqType = typ.In(0)
|
||||
case 2:
|
||||
h.ctxType = typ.In(0)
|
||||
h.reqType = typ.In(1)
|
||||
}
|
||||
|
||||
handlers = append(handlers, h)
|
||||
|
||||
endpoints = append(endpoints, ®istry.Endpoint{
|
||||
Name: "Func",
|
||||
Request: extractSubValue(typ),
|
||||
Metadata: map[string]string{
|
||||
"topic": topic,
|
||||
"subscriber": "true",
|
||||
},
|
||||
})
|
||||
} else {
|
||||
hdlr := reflect.ValueOf(sub)
|
||||
name := reflect.Indirect(hdlr).Type().Name()
|
||||
|
||||
for m := 0; m < typ.NumMethod(); m++ {
|
||||
method := typ.Method(m)
|
||||
h := &handler{
|
||||
method: method.Func,
|
||||
}
|
||||
|
||||
switch method.Type.NumIn() {
|
||||
case 2:
|
||||
h.reqType = method.Type.In(1)
|
||||
case 3:
|
||||
h.ctxType = method.Type.In(1)
|
||||
h.reqType = method.Type.In(2)
|
||||
}
|
||||
|
||||
handlers = append(handlers, h)
|
||||
|
||||
endpoints = append(endpoints, ®istry.Endpoint{
|
||||
Name: name + "." + method.Name,
|
||||
Request: extractSubValue(method.Type),
|
||||
Metadata: map[string]string{
|
||||
"topic": topic,
|
||||
"subscriber": "true",
|
||||
},
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
return &httpSubscriber{
|
||||
rcvr: reflect.ValueOf(sub),
|
||||
typ: reflect.TypeOf(sub),
|
||||
topic: topic,
|
||||
subscriber: sub,
|
||||
handlers: handlers,
|
||||
endpoints: endpoints,
|
||||
opts: options,
|
||||
}
|
||||
}
|
||||
|
||||
func validateSubscriber(sub server.Subscriber) error {
|
||||
typ := reflect.TypeOf(sub.Subscriber())
|
||||
var argType reflect.Type
|
||||
|
||||
if typ.Kind() == reflect.Func {
|
||||
name := "Func"
|
||||
switch typ.NumIn() {
|
||||
case 2:
|
||||
argType = typ.In(1)
|
||||
default:
|
||||
return fmt.Errorf("subscriber %v takes wrong number of args: %v required signature %s", name, typ.NumIn(), subSig)
|
||||
}
|
||||
if !isExportedOrBuiltinType(argType) {
|
||||
return fmt.Errorf("subscriber %v argument type not exported: %v", name, argType)
|
||||
}
|
||||
if typ.NumOut() != 1 {
|
||||
return fmt.Errorf("subscriber %v has wrong number of outs: %v require signature %s",
|
||||
name, typ.NumOut(), subSig)
|
||||
}
|
||||
if returnType := typ.Out(0); returnType != typeOfError {
|
||||
return fmt.Errorf("subscriber %v returns %v not error", name, returnType.String())
|
||||
}
|
||||
} else {
|
||||
hdlr := reflect.ValueOf(sub.Subscriber())
|
||||
name := reflect.Indirect(hdlr).Type().Name()
|
||||
|
||||
for m := 0; m < typ.NumMethod(); m++ {
|
||||
method := typ.Method(m)
|
||||
|
||||
switch method.Type.NumIn() {
|
||||
case 3:
|
||||
argType = method.Type.In(2)
|
||||
default:
|
||||
return fmt.Errorf("subscriber %v.%v takes wrong number of args: %v required signature %s",
|
||||
name, method.Name, method.Type.NumIn(), subSig)
|
||||
}
|
||||
|
||||
if !isExportedOrBuiltinType(argType) {
|
||||
return fmt.Errorf("%v argument type not exported: %v", name, argType)
|
||||
}
|
||||
if method.Type.NumOut() != 1 {
|
||||
return fmt.Errorf(
|
||||
"subscriber %v.%v has wrong number of outs: %v require signature %s",
|
||||
name, method.Name, method.Type.NumOut(), subSig)
|
||||
}
|
||||
if returnType := method.Type.Out(0); returnType != typeOfError {
|
||||
return fmt.Errorf("subscriber %v.%v returns %v not error", name, method.Name, returnType.String())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *httpServer) createSubHandler(sb *httpSubscriber, opts server.Options) broker.Handler {
|
||||
return func(p broker.Event) error {
|
||||
msg := p.Message()
|
||||
ct := msg.Header["Content-Type"]
|
||||
cf, err := s.newCodec(ct)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
hdr := make(map[string]string)
|
||||
for k, v := range msg.Header {
|
||||
hdr[k] = v
|
||||
}
|
||||
delete(hdr, "Content-Type")
|
||||
ctx := metadata.NewContext(context.Background(), hdr)
|
||||
|
||||
results := make(chan error, len(sb.handlers))
|
||||
|
||||
for i := 0; i < len(sb.handlers); i++ {
|
||||
handler := sb.handlers[i]
|
||||
|
||||
var isVal bool
|
||||
var req reflect.Value
|
||||
|
||||
if handler.reqType.Kind() == reflect.Ptr {
|
||||
req = reflect.New(handler.reqType.Elem())
|
||||
} else {
|
||||
req = reflect.New(handler.reqType)
|
||||
isVal = true
|
||||
}
|
||||
if isVal {
|
||||
req = req.Elem()
|
||||
}
|
||||
|
||||
b := &buffer{bytes.NewBuffer(msg.Body)}
|
||||
co := cf(b)
|
||||
defer co.Close()
|
||||
|
||||
if err := co.ReadHeader(&codec.Message{}, codec.Event); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := co.ReadBody(req.Interface()); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
fn := func(ctx context.Context, msg server.Message) error {
|
||||
var vals []reflect.Value
|
||||
if sb.typ.Kind() != reflect.Func {
|
||||
vals = append(vals, sb.rcvr)
|
||||
}
|
||||
if handler.ctxType != nil {
|
||||
vals = append(vals, reflect.ValueOf(ctx))
|
||||
}
|
||||
|
||||
vals = append(vals, reflect.ValueOf(msg.Payload()))
|
||||
|
||||
returnValues := handler.method.Call(vals)
|
||||
if err := returnValues[0].Interface(); err != nil {
|
||||
return err.(error)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
for i := len(opts.SubWrappers); i > 0; i-- {
|
||||
fn = opts.SubWrappers[i-1](fn)
|
||||
}
|
||||
|
||||
go func() {
|
||||
results <- fn(ctx, &httpMessage{
|
||||
topic: sb.topic,
|
||||
contentType: ct,
|
||||
payload: req.Interface(),
|
||||
header: msg.Header,
|
||||
body: msg.Body,
|
||||
codec: co,
|
||||
})
|
||||
}()
|
||||
}
|
||||
|
||||
var errors []string
|
||||
|
||||
for i := 0; i < len(sb.handlers); i++ {
|
||||
if err := <-results; err != nil {
|
||||
errors = append(errors, err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
if len(errors) > 0 {
|
||||
return fmt.Errorf("subscriber error: %s", strings.Join(errors, "\n"))
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
func (s *httpSubscriber) Topic() string {
|
||||
return s.topic
|
||||
}
|
||||
|
||||
func (s *httpSubscriber) Subscriber() interface{} {
|
||||
return s.subscriber
|
||||
}
|
||||
|
||||
func (s *httpSubscriber) Endpoints() []*registry.Endpoint {
|
||||
return s.endpoints
|
||||
}
|
||||
|
||||
func (s *httpSubscriber) Options() server.SubscriberOptions {
|
||||
return s.opts
|
||||
}
|
||||
Reference in New Issue
Block a user