Add broker service implementation
This commit is contained in:
Asim Aslam
parent
b1163b9dee
commit
4de346920f
57
broker/service/handler/handler.go
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57
broker/service/handler/handler.go
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@ -0,0 +1,57 @@
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package handler
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import (
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"context"
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"github.com/micro/go-micro/broker"
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pb "github.com/micro/go-micro/broker/service/proto"
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"github.com/micro/go-micro/errors"
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)
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type Broker struct {
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Broker broker.Broker
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}
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func (b *Broker) Publish(ctx context.Context, req *pb.PublishRequest, rsp *pb.Empty) error {
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err := b.Broker.Publish(req.Topic, &broker.Message{
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Header: req.Message.Header,
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Body: req.Message.Body,
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})
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if err != nil {
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return errors.InternalServerError("go.micro.broker", err.Error())
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}
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return nil
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}
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func (b *Broker) Subscribe(ctx context.Context, req *pb.SubscribeRequest, stream pb.Broker_SubscribeStream) error {
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errChan := make(chan error, 1)
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// message handler to stream back messages from broker
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handler := func(p broker.Event) error {
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if err := stream.Send(&pb.Message{
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Header: p.Message().Header,
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Body: p.Message().Body,
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}); err != nil {
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select {
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case errChan <- err:
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return err
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default:
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return err
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}
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}
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return nil
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}
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sub, err := b.Broker.Subscribe(req.Topic, handler, broker.Queue(req.Queue))
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if err != nil {
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return errors.InternalServerError("go.micro.broker", err.Error())
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}
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defer sub.Unsubscribe()
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select {
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case <-ctx.Done():
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return nil
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case <-errChan:
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return err
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}
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}
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173
broker/service/proto/broker.micro.go
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173
broker/service/proto/broker.micro.go
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@ -0,0 +1,173 @@
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// Code generated by protoc-gen-micro. DO NOT EDIT.
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// source: github.com/micro/go-micro/broker/proto/broker.proto
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package go_micro_broker
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import (
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fmt "fmt"
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proto "github.com/golang/protobuf/proto"
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math "math"
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)
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import (
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context "context"
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client "github.com/micro/go-micro/client"
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server "github.com/micro/go-micro/server"
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)
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// Reference imports to suppress errors if they are not otherwise used.
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var _ = proto.Marshal
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var _ = fmt.Errorf
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var _ = math.Inf
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// This is a compile-time assertion to ensure that this generated file
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// is compatible with the proto package it is being compiled against.
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// A compilation error at this line likely means your copy of the
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// proto package needs to be updated.
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const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
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// Reference imports to suppress errors if they are not otherwise used.
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var _ context.Context
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var _ client.Option
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var _ server.Option
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// Client API for Broker service
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type BrokerService interface {
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Publish(ctx context.Context, in *PublishRequest, opts ...client.CallOption) (*Empty, error)
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Subscribe(ctx context.Context, in *SubscribeRequest, opts ...client.CallOption) (Broker_SubscribeService, error)
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}
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type brokerService struct {
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c client.Client
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name string
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}
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func NewBrokerService(name string, c client.Client) BrokerService {
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if c == nil {
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c = client.NewClient()
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}
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if len(name) == 0 {
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name = "go.micro.broker"
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}
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return &brokerService{
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c: c,
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name: name,
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}
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}
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func (c *brokerService) Publish(ctx context.Context, in *PublishRequest, opts ...client.CallOption) (*Empty, error) {
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req := c.c.NewRequest(c.name, "Broker.Publish", in)
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out := new(Empty)
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err := c.c.Call(ctx, req, out, opts...)
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if err != nil {
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return nil, err
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}
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return out, nil
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}
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func (c *brokerService) Subscribe(ctx context.Context, in *SubscribeRequest, opts ...client.CallOption) (Broker_SubscribeService, error) {
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req := c.c.NewRequest(c.name, "Broker.Subscribe", &SubscribeRequest{})
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stream, err := c.c.Stream(ctx, req, opts...)
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if err != nil {
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return nil, err
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}
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if err := stream.Send(in); err != nil {
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return nil, err
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}
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return &brokerServiceSubscribe{stream}, nil
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}
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type Broker_SubscribeService interface {
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SendMsg(interface{}) error
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RecvMsg(interface{}) error
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Close() error
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Recv() (*Message, error)
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}
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type brokerServiceSubscribe struct {
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stream client.Stream
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}
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func (x *brokerServiceSubscribe) Close() error {
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return x.stream.Close()
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}
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func (x *brokerServiceSubscribe) SendMsg(m interface{}) error {
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return x.stream.Send(m)
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}
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func (x *brokerServiceSubscribe) RecvMsg(m interface{}) error {
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return x.stream.Recv(m)
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}
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func (x *brokerServiceSubscribe) Recv() (*Message, error) {
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m := new(Message)
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err := x.stream.Recv(m)
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// Server API for Broker service
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type BrokerHandler interface {
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Publish(context.Context, *PublishRequest, *Empty) error
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Subscribe(context.Context, *SubscribeRequest, Broker_SubscribeStream) error
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}
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func RegisterBrokerHandler(s server.Server, hdlr BrokerHandler, opts ...server.HandlerOption) error {
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type broker interface {
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Publish(ctx context.Context, in *PublishRequest, out *Empty) error
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Subscribe(ctx context.Context, stream server.Stream) error
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}
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type Broker struct {
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broker
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}
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h := &brokerHandler{hdlr}
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return s.Handle(s.NewHandler(&Broker{h}, opts...))
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}
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type brokerHandler struct {
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BrokerHandler
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}
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func (h *brokerHandler) Publish(ctx context.Context, in *PublishRequest, out *Empty) error {
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return h.BrokerHandler.Publish(ctx, in, out)
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}
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func (h *brokerHandler) Subscribe(ctx context.Context, stream server.Stream) error {
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m := new(SubscribeRequest)
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if err := stream.Recv(m); err != nil {
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return err
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}
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return h.BrokerHandler.Subscribe(ctx, m, &brokerSubscribeStream{stream})
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}
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type Broker_SubscribeStream interface {
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SendMsg(interface{}) error
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RecvMsg(interface{}) error
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Close() error
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Send(*Message) error
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}
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type brokerSubscribeStream struct {
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stream server.Stream
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}
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func (x *brokerSubscribeStream) Close() error {
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return x.stream.Close()
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}
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func (x *brokerSubscribeStream) SendMsg(m interface{}) error {
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return x.stream.Send(m)
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}
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func (x *brokerSubscribeStream) RecvMsg(m interface{}) error {
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return x.stream.Recv(m)
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}
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func (x *brokerSubscribeStream) Send(m *Message) error {
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return x.stream.Send(m)
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}
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364
broker/service/proto/broker.pb.go
Normal file
364
broker/service/proto/broker.pb.go
Normal file
@ -0,0 +1,364 @@
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// Code generated by protoc-gen-go. DO NOT EDIT.
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// source: github.com/micro/go-micro/broker/proto/broker.proto
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package go_micro_broker
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import (
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context "context"
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fmt "fmt"
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proto "github.com/golang/protobuf/proto"
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grpc "google.golang.org/grpc"
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math "math"
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)
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// Reference imports to suppress errors if they are not otherwise used.
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var _ = proto.Marshal
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var _ = fmt.Errorf
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var _ = math.Inf
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// This is a compile-time assertion to ensure that this generated file
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// is compatible with the proto package it is being compiled against.
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// A compilation error at this line likely means your copy of the
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// proto package needs to be updated.
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const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
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type Empty struct {
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
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XXX_sizecache int32 `json:"-"`
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}
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func (m *Empty) Reset() { *m = Empty{} }
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func (m *Empty) String() string { return proto.CompactTextString(m) }
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func (*Empty) ProtoMessage() {}
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func (*Empty) Descriptor() ([]byte, []int) {
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return fileDescriptor_5edf81766900dd99, []int{0}
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}
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func (m *Empty) XXX_Unmarshal(b []byte) error {
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return xxx_messageInfo_Empty.Unmarshal(m, b)
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}
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func (m *Empty) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
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return xxx_messageInfo_Empty.Marshal(b, m, deterministic)
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}
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func (m *Empty) XXX_Merge(src proto.Message) {
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xxx_messageInfo_Empty.Merge(m, src)
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}
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func (m *Empty) XXX_Size() int {
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return xxx_messageInfo_Empty.Size(m)
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}
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func (m *Empty) XXX_DiscardUnknown() {
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xxx_messageInfo_Empty.DiscardUnknown(m)
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}
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var xxx_messageInfo_Empty proto.InternalMessageInfo
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type PublishRequest struct {
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Topic string `protobuf:"bytes,1,opt,name=topic,proto3" json:"topic,omitempty"`
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Message *Message `protobuf:"bytes,2,opt,name=message,proto3" json:"message,omitempty"`
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
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XXX_sizecache int32 `json:"-"`
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}
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func (m *PublishRequest) Reset() { *m = PublishRequest{} }
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func (m *PublishRequest) String() string { return proto.CompactTextString(m) }
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func (*PublishRequest) ProtoMessage() {}
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func (*PublishRequest) Descriptor() ([]byte, []int) {
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return fileDescriptor_5edf81766900dd99, []int{1}
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}
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func (m *PublishRequest) XXX_Unmarshal(b []byte) error {
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return xxx_messageInfo_PublishRequest.Unmarshal(m, b)
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}
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func (m *PublishRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
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return xxx_messageInfo_PublishRequest.Marshal(b, m, deterministic)
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}
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func (m *PublishRequest) XXX_Merge(src proto.Message) {
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xxx_messageInfo_PublishRequest.Merge(m, src)
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}
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func (m *PublishRequest) XXX_Size() int {
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return xxx_messageInfo_PublishRequest.Size(m)
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}
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func (m *PublishRequest) XXX_DiscardUnknown() {
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xxx_messageInfo_PublishRequest.DiscardUnknown(m)
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}
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var xxx_messageInfo_PublishRequest proto.InternalMessageInfo
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func (m *PublishRequest) GetTopic() string {
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if m != nil {
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return m.Topic
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}
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return ""
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}
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func (m *PublishRequest) GetMessage() *Message {
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if m != nil {
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return m.Message
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}
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return nil
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}
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type SubscribeRequest struct {
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Topic string `protobuf:"bytes,1,opt,name=topic,proto3" json:"topic,omitempty"`
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Queue string `protobuf:"bytes,2,opt,name=queue,proto3" json:"queue,omitempty"`
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
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XXX_sizecache int32 `json:"-"`
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}
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func (m *SubscribeRequest) Reset() { *m = SubscribeRequest{} }
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func (m *SubscribeRequest) String() string { return proto.CompactTextString(m) }
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func (*SubscribeRequest) ProtoMessage() {}
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func (*SubscribeRequest) Descriptor() ([]byte, []int) {
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return fileDescriptor_5edf81766900dd99, []int{2}
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}
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func (m *SubscribeRequest) XXX_Unmarshal(b []byte) error {
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return xxx_messageInfo_SubscribeRequest.Unmarshal(m, b)
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}
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func (m *SubscribeRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
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return xxx_messageInfo_SubscribeRequest.Marshal(b, m, deterministic)
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}
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func (m *SubscribeRequest) XXX_Merge(src proto.Message) {
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xxx_messageInfo_SubscribeRequest.Merge(m, src)
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}
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func (m *SubscribeRequest) XXX_Size() int {
|
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return xxx_messageInfo_SubscribeRequest.Size(m)
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}
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func (m *SubscribeRequest) XXX_DiscardUnknown() {
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xxx_messageInfo_SubscribeRequest.DiscardUnknown(m)
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}
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var xxx_messageInfo_SubscribeRequest proto.InternalMessageInfo
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func (m *SubscribeRequest) GetTopic() string {
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if m != nil {
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return m.Topic
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}
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return ""
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}
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func (m *SubscribeRequest) GetQueue() string {
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if m != nil {
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return m.Queue
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}
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return ""
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}
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type Message struct {
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Header map[string]string `protobuf:"bytes,1,rep,name=header,proto3" json:"header,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
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Body []byte `protobuf:"bytes,2,opt,name=body,proto3" json:"body,omitempty"`
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
|
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XXX_sizecache int32 `json:"-"`
|
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}
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|
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func (m *Message) Reset() { *m = Message{} }
|
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func (m *Message) String() string { return proto.CompactTextString(m) }
|
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func (*Message) ProtoMessage() {}
|
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func (*Message) Descriptor() ([]byte, []int) {
|
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return fileDescriptor_5edf81766900dd99, []int{3}
|
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}
|
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|
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func (m *Message) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Message.Unmarshal(m, b)
|
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}
|
||||
func (m *Message) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Message.Marshal(b, m, deterministic)
|
||||
}
|
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func (m *Message) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Message.Merge(m, src)
|
||||
}
|
||||
func (m *Message) XXX_Size() int {
|
||||
return xxx_messageInfo_Message.Size(m)
|
||||
}
|
||||
func (m *Message) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Message.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Message proto.InternalMessageInfo
|
||||
|
||||
func (m *Message) GetHeader() map[string]string {
|
||||
if m != nil {
|
||||
return m.Header
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Message) GetBody() []byte {
|
||||
if m != nil {
|
||||
return m.Body
|
||||
}
|
||||
return nil
|
||||
}
|
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|
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func init() {
|
||||
proto.RegisterType((*Empty)(nil), "go.micro.broker.Empty")
|
||||
proto.RegisterType((*PublishRequest)(nil), "go.micro.broker.PublishRequest")
|
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proto.RegisterType((*SubscribeRequest)(nil), "go.micro.broker.SubscribeRequest")
|
||||
proto.RegisterType((*Message)(nil), "go.micro.broker.Message")
|
||||
proto.RegisterMapType((map[string]string)(nil), "go.micro.broker.Message.HeaderEntry")
|
||||
}
|
||||
|
||||
func init() {
|
||||
proto.RegisterFile("github.com/micro/go-micro/broker/proto/broker.proto", fileDescriptor_5edf81766900dd99)
|
||||
}
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||||
|
||||
var fileDescriptor_5edf81766900dd99 = []byte{
|
||||
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|
||||
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|
||||
0xbc, 0xaa, 0xe2, 0x94, 0xbb, 0x5d, 0x0f, 0x05, 0xa3, 0xc8, 0x25, 0x3b, 0x9e, 0xe4, 0xd1, 0xfe,
|
||||
0xa7, 0x5b, 0xd0, 0xbf, 0x81, 0xf1, 0xb3, 0x66, 0x55, 0x22, 0x73, 0xc6, 0xff, 0x76, 0x9f, 0x40,
|
||||
0x7f, 0xad, 0xb9, 0xb6, 0xde, 0x43, 0x6a, 0x85, 0xff, 0x8e, 0xc0, 0x69, 0x4c, 0xf1, 0x35, 0x0c,
|
||||
0x32, 0x1e, 0x2f, 0xb8, 0x74, 0x91, 0xd7, 0x0b, 0x46, 0xd1, 0xe9, 0xbe, 0xf5, 0xe4, 0xde, 0x60,
|
||||
0xf3, 0x57, 0x25, 0x6b, 0xda, 0xbc, 0xc1, 0x18, 0xfe, 0x31, 0xb1, 0xa8, 0x8d, 0xfd, 0x7f, 0x6a,
|
||||
0xe6, 0xe9, 0x25, 0x8c, 0x7e, 0xa0, 0x78, 0x0c, 0xbd, 0x25, 0xaf, 0x9b, 0x58, 0x9b, 0x71, 0x13,
|
||||
0xea, 0x2d, 0x5e, 0x7d, 0x87, 0x32, 0xe2, 0xaa, 0x7b, 0x81, 0xa2, 0x0f, 0x04, 0x83, 0x5b, 0xb3,
|
||||
0x15, 0xdf, 0x81, 0xd3, 0xf4, 0x87, 0x8f, 0x5b, 0x91, 0x7e, 0x37, 0x3b, 0x3d, 0x6a, 0x01, 0xf6,
|
||||
0x06, 0x1d, 0xfc, 0x00, 0xc3, 0xaf, 0xa6, 0xf0, 0x49, 0x0b, 0xdb, 0x6d, 0x71, 0xba, 0xb7, 0x7c,
|
||||
0xbf, 0x73, 0x8e, 0xd8, 0xc0, 0x1c, 0x7d, 0xf6, 0x19, 0x00, 0x00, 0xff, 0xff, 0x25, 0x38, 0xfa,
|
||||
0x02, 0x2b, 0x02, 0x00, 0x00,
|
||||
}
|
||||
|
||||
// Reference imports to suppress errors if they are not otherwise used.
|
||||
var _ context.Context
|
||||
var _ grpc.ClientConn
|
||||
|
||||
// This is a compile-time assertion to ensure that this generated file
|
||||
// is compatible with the grpc package it is being compiled against.
|
||||
const _ = grpc.SupportPackageIsVersion4
|
||||
|
||||
// BrokerClient is the client API for Broker service.
|
||||
//
|
||||
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
|
||||
type BrokerClient interface {
|
||||
Publish(ctx context.Context, in *PublishRequest, opts ...grpc.CallOption) (*Empty, error)
|
||||
Subscribe(ctx context.Context, in *SubscribeRequest, opts ...grpc.CallOption) (Broker_SubscribeClient, error)
|
||||
}
|
||||
|
||||
type brokerClient struct {
|
||||
cc *grpc.ClientConn
|
||||
}
|
||||
|
||||
func NewBrokerClient(cc *grpc.ClientConn) BrokerClient {
|
||||
return &brokerClient{cc}
|
||||
}
|
||||
|
||||
func (c *brokerClient) Publish(ctx context.Context, in *PublishRequest, opts ...grpc.CallOption) (*Empty, error) {
|
||||
out := new(Empty)
|
||||
err := c.cc.Invoke(ctx, "/go.micro.broker.Broker/Publish", in, out, opts...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return out, nil
|
||||
}
|
||||
|
||||
func (c *brokerClient) Subscribe(ctx context.Context, in *SubscribeRequest, opts ...grpc.CallOption) (Broker_SubscribeClient, error) {
|
||||
stream, err := c.cc.NewStream(ctx, &_Broker_serviceDesc.Streams[0], "/go.micro.broker.Broker/Subscribe", opts...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
x := &brokerSubscribeClient{stream}
|
||||
if err := x.ClientStream.SendMsg(in); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := x.ClientStream.CloseSend(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return x, nil
|
||||
}
|
||||
|
||||
type Broker_SubscribeClient interface {
|
||||
Recv() (*Message, error)
|
||||
grpc.ClientStream
|
||||
}
|
||||
|
||||
type brokerSubscribeClient struct {
|
||||
grpc.ClientStream
|
||||
}
|
||||
|
||||
func (x *brokerSubscribeClient) Recv() (*Message, error) {
|
||||
m := new(Message)
|
||||
if err := x.ClientStream.RecvMsg(m); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// BrokerServer is the server API for Broker service.
|
||||
type BrokerServer interface {
|
||||
Publish(context.Context, *PublishRequest) (*Empty, error)
|
||||
Subscribe(*SubscribeRequest, Broker_SubscribeServer) error
|
||||
}
|
||||
|
||||
func RegisterBrokerServer(s *grpc.Server, srv BrokerServer) {
|
||||
s.RegisterService(&_Broker_serviceDesc, srv)
|
||||
}
|
||||
|
||||
func _Broker_Publish_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
|
||||
in := new(PublishRequest)
|
||||
if err := dec(in); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if interceptor == nil {
|
||||
return srv.(BrokerServer).Publish(ctx, in)
|
||||
}
|
||||
info := &grpc.UnaryServerInfo{
|
||||
Server: srv,
|
||||
FullMethod: "/go.micro.broker.Broker/Publish",
|
||||
}
|
||||
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
|
||||
return srv.(BrokerServer).Publish(ctx, req.(*PublishRequest))
|
||||
}
|
||||
return interceptor(ctx, in, info, handler)
|
||||
}
|
||||
|
||||
func _Broker_Subscribe_Handler(srv interface{}, stream grpc.ServerStream) error {
|
||||
m := new(SubscribeRequest)
|
||||
if err := stream.RecvMsg(m); err != nil {
|
||||
return err
|
||||
}
|
||||
return srv.(BrokerServer).Subscribe(m, &brokerSubscribeServer{stream})
|
||||
}
|
||||
|
||||
type Broker_SubscribeServer interface {
|
||||
Send(*Message) error
|
||||
grpc.ServerStream
|
||||
}
|
||||
|
||||
type brokerSubscribeServer struct {
|
||||
grpc.ServerStream
|
||||
}
|
||||
|
||||
func (x *brokerSubscribeServer) Send(m *Message) error {
|
||||
return x.ServerStream.SendMsg(m)
|
||||
}
|
||||
|
||||
var _Broker_serviceDesc = grpc.ServiceDesc{
|
||||
ServiceName: "go.micro.broker.Broker",
|
||||
HandlerType: (*BrokerServer)(nil),
|
||||
Methods: []grpc.MethodDesc{
|
||||
{
|
||||
MethodName: "Publish",
|
||||
Handler: _Broker_Publish_Handler,
|
||||
},
|
||||
},
|
||||
Streams: []grpc.StreamDesc{
|
||||
{
|
||||
StreamName: "Subscribe",
|
||||
Handler: _Broker_Subscribe_Handler,
|
||||
ServerStreams: true,
|
||||
},
|
||||
},
|
||||
Metadata: "github.com/micro/go-micro/broker/proto/broker.proto",
|
||||
}
|
||||
25
broker/service/proto/broker.proto
Normal file
25
broker/service/proto/broker.proto
Normal file
@ -0,0 +1,25 @@
|
||||
syntax = "proto3";
|
||||
|
||||
package go.micro.broker;
|
||||
|
||||
service Broker {
|
||||
rpc Publish(PublishRequest) returns (Empty) {};
|
||||
rpc Subscribe(SubscribeRequest) returns (stream Message) {};
|
||||
}
|
||||
|
||||
message Empty {}
|
||||
|
||||
message PublishRequest {
|
||||
string topic = 1;
|
||||
Message message = 2;
|
||||
}
|
||||
|
||||
message SubscribeRequest {
|
||||
string topic = 1;
|
||||
string queue = 2;
|
||||
}
|
||||
|
||||
message Message {
|
||||
map<string,string> header = 1;
|
||||
bytes body = 2;
|
||||
}
|
||||
102
broker/service/service.go
Normal file
102
broker/service/service.go
Normal file
@ -0,0 +1,102 @@
|
||||
// Package service provides the broker service client
|
||||
package service
|
||||
|
||||
import (
|
||||
"context"
|
||||
|
||||
"github.com/micro/go-micro/broker"
|
||||
pb "github.com/micro/go-micro/broker/service/proto"
|
||||
"github.com/micro/go-micro/client"
|
||||
)
|
||||
|
||||
type serviceBroker struct {
|
||||
Addrs []string
|
||||
Client pb.BrokerService
|
||||
options broker.Options
|
||||
}
|
||||
|
||||
var (
|
||||
DefaultName = "go.micro.broker"
|
||||
)
|
||||
|
||||
func (b *serviceBroker) Address() string {
|
||||
return b.Addrs[0]
|
||||
}
|
||||
|
||||
func (b *serviceBroker) Connect() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (b *serviceBroker) Disconnect() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (b *serviceBroker) Init(opts ...broker.Option) error {
|
||||
for _, o := range opts {
|
||||
o(&b.options)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (b *serviceBroker) Options() broker.Options {
|
||||
return b.options
|
||||
}
|
||||
|
||||
func (b *serviceBroker) Publish(topic string, msg *broker.Message, opts ...broker.PublishOption) error {
|
||||
_, err := b.Client.Publish(context.TODO(), &pb.PublishRequest{
|
||||
Topic: topic,
|
||||
Message: &pb.Message{
|
||||
Header: msg.Header,
|
||||
Body: msg.Body,
|
||||
},
|
||||
}, client.WithAddress(b.Addrs...))
|
||||
return err
|
||||
}
|
||||
|
||||
func (b *serviceBroker) Subscribe(topic string, handler broker.Handler, opts ...broker.SubscribeOption) (broker.Subscriber, error) {
|
||||
var options broker.SubscribeOptions
|
||||
for _, o := range opts {
|
||||
o(&options)
|
||||
}
|
||||
stream, err := b.Client.Subscribe(context.TODO(), &pb.SubscribeRequest{
|
||||
Topic: topic,
|
||||
Queue: options.Queue,
|
||||
}, client.WithAddress(b.Addrs...))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
sub := &serviceSub{
|
||||
topic: topic,
|
||||
queue: options.Queue,
|
||||
handler: handler,
|
||||
stream: stream,
|
||||
closed: make(chan bool),
|
||||
options: options,
|
||||
}
|
||||
go sub.run()
|
||||
|
||||
return sub, nil
|
||||
}
|
||||
|
||||
func (b *serviceBroker) String() string {
|
||||
return "service"
|
||||
}
|
||||
|
||||
func NewBroker(opts ...broker.Option) broker.Broker {
|
||||
var options broker.Options
|
||||
for _, o := range opts {
|
||||
o(&options)
|
||||
}
|
||||
|
||||
addrs := options.Addrs
|
||||
if len(addrs) == 0 {
|
||||
addrs = []string{"127.0.0.1:8001"}
|
||||
}
|
||||
|
||||
return &serviceBroker{
|
||||
Addrs: addrs,
|
||||
Client: pb.NewBrokerService(DefaultName, client.DefaultClient),
|
||||
options: options,
|
||||
}
|
||||
}
|
||||
79
broker/service/subscriber.go
Normal file
79
broker/service/subscriber.go
Normal file
@ -0,0 +1,79 @@
|
||||
package service
|
||||
|
||||
import (
|
||||
"github.com/micro/go-micro/broker"
|
||||
pb "github.com/micro/go-micro/broker/service/proto"
|
||||
)
|
||||
|
||||
type serviceSub struct {
|
||||
topic string
|
||||
queue string
|
||||
handler broker.Handler
|
||||
stream pb.Broker_SubscribeService
|
||||
closed chan bool
|
||||
options broker.SubscribeOptions
|
||||
}
|
||||
|
||||
type serviceEvent struct {
|
||||
topic string
|
||||
message *broker.Message
|
||||
}
|
||||
|
||||
func (s *serviceEvent) Topic() string {
|
||||
return s.topic
|
||||
}
|
||||
|
||||
func (s *serviceEvent) Message() *broker.Message {
|
||||
return s.message
|
||||
}
|
||||
|
||||
func (s *serviceEvent) Ack() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *serviceSub) run() {
|
||||
exit := make(chan bool)
|
||||
go func() {
|
||||
select {
|
||||
case <-exit:
|
||||
return
|
||||
case <-s.closed:
|
||||
s.stream.Close()
|
||||
}
|
||||
}()
|
||||
|
||||
for {
|
||||
// TODO: do not fail silently
|
||||
msg, err := s.stream.Recv()
|
||||
if err != nil {
|
||||
close(exit)
|
||||
return
|
||||
}
|
||||
// TODO: handle error
|
||||
s.handler(&serviceEvent{
|
||||
topic: s.topic,
|
||||
message: &broker.Message{
|
||||
Header: msg.Header,
|
||||
Body: msg.Body,
|
||||
},
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func (s *serviceSub) Options() broker.SubscribeOptions {
|
||||
return s.options
|
||||
}
|
||||
|
||||
func (s *serviceSub) Topic() string {
|
||||
return s.topic
|
||||
}
|
||||
|
||||
func (s *serviceSub) Unsubscribe() error {
|
||||
select {
|
||||
case <-s.closed:
|
||||
return nil
|
||||
default:
|
||||
close(s.closed)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user