Merge pull request 'add defaultConfigService' (#133) from devstigneev/micro-client-grpc:issue_132 into master

Reviewed-on: #133

codec.go

@@ -1,6 +1,8 @@
 package grpc
 
 import (
+	"io"
+
 	"go.unistack.org/micro/v3/codec"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/encoding"
@@ -63,3 +65,63 @@ func (w *wrapGrpcCodec) Unmarshal(d []byte, v interface{}, opts ...codec.Option)
 	}
 	return w.Codec.Unmarshal(d, v)
 }
+
+/*
+type grpcCodec struct {
+	grpc.ServerStream
+	// headers
+	id       string
+	target   string
+	method   string
+	endpoint string
+
+	c encoding.Codec
+}
+
+*/
+
+func (w *wrapGrpcCodec) ReadHeader(conn io.Reader, m *codec.Message, mt codec.MessageType) error {
+	/*
+		if m == nil {
+			m = codec.NewMessage(codec.Request)
+		}
+
+		if md, ok := metadata.FromIncomingContext(g.ServerStream.Context()); ok {
+			if m.Header == nil {
+				m.Header = meta.New(len(md))
+			}
+			for k, v := range md {
+				m.Header[k] = strings.Join(v, ",")
+			}
+		}
+
+		m.Id = g.id
+		m.Target = g.target
+		m.Method = g.method
+		m.Endpoint = g.endpoint
+	*/
+	return nil
+}
+
+func (w *wrapGrpcCodec) ReadBody(conn io.Reader, v interface{}) error {
+	// caller has requested a frame
+	if m, ok := v.(*codec.Frame); ok {
+		_, err := conn.Read(m.Data)
+		return err
+	}
+	return codec.ErrInvalidMessage
+}
+
+func (w *wrapGrpcCodec) Write(conn io.Writer, m *codec.Message, v interface{}) error {
+	// if we don't have a body
+	if v != nil {
+		b, err := w.Marshal(v)
+		if err != nil {
+			return err
+		}
+		m.Body = b
+	}
+	// write the body using the framing codec
+	_, err := conn.Write(m.Body)
+	return err
+}

go.mod

@@ -1,19 +1,8 @@
 module go.unistack.org/micro-client-grpc/v3
 
-go 1.21
+go 1.16
-
-toolchain go1.23.1
 
 require (
-	go.unistack.org/micro/v3 v3.10.91
+	go.unistack.org/micro/v3 v3.10.22
-	google.golang.org/grpc v1.67.0
+	google.golang.org/grpc v1.52.3
-)
-
-require (
-	go.unistack.org/micro-proto/v3 v3.4.1 // indirect
-	golang.org/x/net v0.29.0 // indirect
-	golang.org/x/sys v0.25.0 // indirect
-	golang.org/x/text v0.18.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
-	google.golang.org/protobuf v1.34.2 // indirect
 )

grpc.go

@@ -1,5 +1,5 @@
-// Package grpc provides a gRPC client for micro framework
+// Package grpc provides a gRPC client
-package grpc
+package grpc // import "go.unistack.org/micro-client-grpc/v3"
 
 import (
 	"context"
@@ -8,7 +8,6 @@ import (
 	"net"
 	"os"
 	"reflect"
-	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -18,17 +17,12 @@ import (
 	"go.unistack.org/micro/v3/codec"
 	"go.unistack.org/micro/v3/errors"
 	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/options"
 	"go.unistack.org/micro/v3/selector"
-	"go.unistack.org/micro/v3/semconv"
-	"go.unistack.org/micro/v3/tracer"
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/encoding"
 	gmetadata "google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/status"
 )
 
 const (
@@ -36,12 +30,8 @@ const (
 )
 
 type grpcClient struct {
-	funcPublish      client.FuncPublish
+	pool *ConnPool
-	funcBatchPublish client.FuncBatchPublish
+	opts client.Options
-	funcCall         client.FuncCall
-	funcStream       client.FuncStream
-	pool             *ConnPool
-	opts             client.Options
 	sync.RWMutex
 	init bool
 }
@@ -130,9 +120,6 @@ func (g *grpcClient) call(ctx context.Context, addr string, req client.Request,
 		grpc.WithDefaultServiceConfig(cfgService),
 	}
 
-	if opts := g.getGrpcDialOptions(g.opts.Context); opts != nil {
-		grpcDialOptions = append(grpcDialOptions, opts...)
-	}
 	if opts := g.getGrpcDialOptions(opts.Context); opts != nil {
 		grpcDialOptions = append(grpcDialOptions, opts...)
 	}
@@ -416,23 +403,26 @@ func (g *grpcClient) Init(opts ...client.Option) error {
 		g.pool.Unlock()
 	}
 
-	g.funcCall = g.fnCall
+	if err := g.opts.Broker.Init(); err != nil {
-	g.funcStream = g.fnStream
+		return err
-	g.funcPublish = g.fnPublish
+	}
-	g.funcBatchPublish = g.fnBatchPublish
+	if err := g.opts.Tracer.Init(); err != nil {
+		return err
+	}
+	if err := g.opts.Router.Init(); err != nil {
+		return err
+	}
+	if err := g.opts.Logger.Init(); err != nil {
+		return err
+	}
+	if err := g.opts.Meter.Init(); err != nil {
+		return err
+	}
+	if err := g.opts.Transport.Init(); err != nil {
+		return err
+	}
 
-	g.opts.Hooks.EachNext(func(hook options.Hook) {
+	g.init = true
-		switch h := hook.(type) {
-		case client.HookCall:
-			g.funcCall = h(g.funcCall)
-		case client.HookStream:
-			g.funcStream = h(g.funcStream)
-		case client.HookPublish:
-			g.funcPublish = h(g.funcPublish)
-		case client.HookBatchPublish:
-			g.funcBatchPublish = h(g.funcBatchPublish)
-		}
-	})
 
 	return nil
 }
@@ -455,32 +445,6 @@ func (g *grpcClient) Call(ctx context.Context, req client.Request, rsp interface
 	} else if rsp == nil {
 		return errors.InternalServerError("go.micro.client", "rsp is nil")
 	}
-
-	ts := time.Now()
-	g.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Inc()
-	var sp tracer.Span
-	ctx, sp = g.opts.Tracer.Start(ctx, req.Endpoint()+" rpc-client",
-		tracer.WithSpanKind(tracer.SpanKindClient),
-		tracer.WithSpanLabels("endpoint", req.Endpoint()),
-	)
-	err := g.funcCall(ctx, req, rsp, opts...)
-	g.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Dec()
-	te := time.Since(ts)
-	g.opts.Meter.Summary(semconv.ClientRequestLatencyMicroseconds, "endpoint", req.Endpoint()).Update(te.Seconds())
-	g.opts.Meter.Histogram(semconv.ClientRequestDurationSeconds, "endpoint", req.Endpoint()).Update(te.Seconds())
-
-	if me := errors.FromError(err); me == nil {
-		sp.Finish()
-		g.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "success", "code", strconv.Itoa(int(200))).Inc()
-	} else {
-		sp.SetStatus(tracer.SpanStatusError, err.Error())
-		g.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "failure", "code", strconv.Itoa(int(me.Code))).Inc()
-	}
-
-	return err
-}
-
-func (g *grpcClient) fnCall(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
 	// make a copy of call opts
 	callOpts := g.opts.CallOptions
 
@@ -512,6 +476,11 @@ func (g *grpcClient) fnCall(ctx context.Context, req client.Request, rsp interfa
 	// make copy of call method
 	gcall := g.call
 
+	// wrap the call in reverse
+	for i := len(callOpts.CallWrappers); i > 0; i-- {
+		gcall = callOpts.CallWrappers[i-1](gcall)
+	}
+
 	// use the router passed as a call option, or fallback to the rpc clients router
 	if callOpts.Router == nil {
 		callOpts.Router = g.opts.Router
@@ -611,31 +580,6 @@ func (g *grpcClient) fnCall(ctx context.Context, req client.Request, rsp interfa
 }
 
 func (g *grpcClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
-	ts := time.Now()
-	g.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Inc()
-	var sp tracer.Span
-	ctx, sp = g.opts.Tracer.Start(ctx, req.Endpoint()+" rpc-client",
-		tracer.WithSpanKind(tracer.SpanKindClient),
-		tracer.WithSpanLabels("endpoint", req.Endpoint()),
-	)
-	stream, err := g.funcStream(ctx, req, opts...)
-	g.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Dec()
-	te := time.Since(ts)
-	g.opts.Meter.Summary(semconv.ClientRequestLatencyMicroseconds, "endpoint", req.Endpoint()).Update(te.Seconds())
-	g.opts.Meter.Histogram(semconv.ClientRequestDurationSeconds, "endpoint", req.Endpoint()).Update(te.Seconds())
-
-	if me := status.Convert(err); me == nil {
-		sp.Finish()
-		g.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "success", "code", strconv.Itoa(int(codes.OK))).Inc()
-	} else {
-		sp.SetStatus(tracer.SpanStatusError, err.Error())
-		g.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "failure", "code", strconv.Itoa(int(me.Code()))).Inc()
-	}
-
-	return stream, err
-}
-
-func (g *grpcClient) fnStream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
 	// make a copy of call opts
 	callOpts := g.opts.CallOptions
 	for _, opt := range opts {
@@ -654,6 +598,11 @@ func (g *grpcClient) fnStream(ctx context.Context, req client.Request, opts ...c
 	// make a copy of stream
 	gstream := g.stream
 
+	// wrap the call in reverse
+	for i := len(callOpts.CallWrappers); i > 0; i-- {
+		gstream = callOpts.CallWrappers[i-1](gstream)
+	}
+
 	// use the router passed as a call option, or fallback to the rpc clients router
 	if callOpts.Router == nil {
 		callOpts.Router = g.opts.Router
@@ -764,18 +713,10 @@ func (g *grpcClient) fnStream(ctx context.Context, req client.Request, opts ...c
 }
 
 func (g *grpcClient) BatchPublish(ctx context.Context, ps []client.Message, opts ...client.PublishOption) error {
-	return g.funcBatchPublish(ctx, ps, opts...)
-}
-
-func (g *grpcClient) fnBatchPublish(ctx context.Context, ps []client.Message, opts ...client.PublishOption) error {
 	return g.publish(ctx, ps, opts...)
 }
 
 func (g *grpcClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
-	return g.funcPublish(ctx, p, opts...)
-}
-
-func (g *grpcClient) fnPublish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
 	return g.publish(ctx, []client.Message{p}, opts...)
 }
 
@@ -789,10 +730,6 @@ func (g *grpcClient) publish(ctx context.Context, ps []client.Message, opts ...c
 	if v, ok := os.LookupEnv("MICRO_PROXY"); ok {
 		exchange = v
 	}
-	// get the exchange
-	if len(options.Exchange) > 0 {
-		exchange = options.Exchange
-	}
 
 	msgs := make([]*broker.Message, 0, len(ps))
 
@@ -804,16 +741,6 @@ func (g *grpcClient) publish(ctx context.Context, ps []client.Message, opts ...c
 	for _, p := range ps {
 		md := metadata.Copy(omd)
 		md[metadata.HeaderContentType] = p.ContentType()
-		topic := p.Topic()
-		if len(exchange) > 0 {
-			topic = exchange
-		}
-		md.Set(metadata.HeaderTopic, topic)
-		iter := p.Metadata().Iterator()
-		var k, v string
-		for iter.Next(&k, &v) {
-			md.Set(k, v)
-		}
 
 		// passed in raw data
 		if d, ok := p.Payload().(*codec.Frame); ok {
@@ -831,6 +758,16 @@ func (g *grpcClient) publish(ctx context.Context, ps []client.Message, opts ...c
 			}
 			body = b
 		}
+
+		topic := p.Topic()
+		if len(exchange) > 0 {
+			topic = exchange
+		}
+
+		for k, v := range p.Metadata() {
+			md.Set(k, v)
+		}
+		md.Set(metadata.HeaderTopic, topic)
 		msgs = append(msgs, &broker.Message{Header: md, Body: body})
 	}
 
@@ -899,16 +836,22 @@ func NewClient(opts ...client.Option) client.Client {
 		options.ContentType = DefaultContentType
 	}
 
-	c := &grpcClient{
+	rc := &grpcClient{
 		opts: options,
 	}
 
-	c.pool = NewConnPool(options.PoolSize, options.PoolTTL, c.poolMaxIdle(), c.poolMaxStreams())
+	rc.pool = NewConnPool(options.PoolSize, options.PoolTTL, rc.poolMaxIdle(), rc.poolMaxStreams())
+	c := client.Client(rc)
 
-	if c.opts.Context != nil {
+	// wrap in reverse
-		if codecs, ok := c.opts.Context.Value(codecsKey{}).(map[string]encoding.Codec); ok && codecs != nil {
+	for i := len(options.Wrappers); i > 0; i-- {
+		c = options.Wrappers[i-1](c)
+	}
+
+	if rc.opts.Context != nil {
+		if codecs, ok := rc.opts.Context.Value(codecsKey{}).(map[string]encoding.Codec); ok && codecs != nil {
 			for k, v := range codecs {
-				c.opts.Codecs[k] = &wrapGrpcCodec{v}
+				rc.opts.Codecs[k] = &wrapGrpcCodec{v}
 			}
 		}
 	}
@@ -917,10 +860,5 @@ func NewClient(opts ...client.Option) client.Client {
 		encoding.RegisterCodec(&wrapMicroCodec{k})
 	}
 
-	c.funcCall = c.fnCall
-	c.funcStream = c.fnStream
-	c.funcPublish = c.fnPublish
-	c.funcBatchPublish = c.fnBatchPublish
-
 	return c
 }

options.go

@@ -98,8 +98,8 @@ func MaxSendMsgSize(s int) client.Option {
 type grpcDialOptions struct{}
 
 // DialOptions to be used to configure gRPC dial options
-func DialOptions(opts ...grpc.DialOption) client.Option {
+func DialOptions(opts ...grpc.DialOption) client.CallOption {
-	return func(o *client.Options) {
+	return func(o *client.CallOptions) {
 		if o.Context == nil {
 			o.Context = context.Background()
 		}

response.go

@@ -34,5 +34,9 @@ func (r *response) Header() metadata.Metadata {
 
 // Read the undecoded response
 func (r *response) Read() ([]byte, error) {
-	return nil, nil
+	f := &codec.Frame{}
+	if err := r.codec.ReadBody(&wrapStream{r.stream}, f); err != nil {
+		return nil, err
+	}
+	return f.Data, nil
 }

stream.go

@@ -6,7 +6,6 @@ import (
 	"sync"
 
 	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/tracer"
 	"google.golang.org/grpc"
 )
 
@@ -112,12 +111,6 @@ func (g *grpcStream) Close() error {
 		return nil
 	}
 
-	if sp, ok := tracer.SpanFromContext(g.context); ok && sp != nil {
-		if g.err != nil {
-			sp.SetStatus(tracer.SpanStatusError, g.err.Error())
-		}
-		sp.Finish()
-	}
 	// close the connection
 	g.closed = true
 	g.close(g.err)