lintering && fix call hook (#122)

Reviewed-on: #122
Co-authored-by: Evstigneev Denis <danteevstigneev@yandex.ru>
Co-committed-by: Evstigneev Denis <danteevstigneev@yandex.ru>

.gitignore

@@ -0,0 +1,39 @@
+# Develop tools
+/.vscode/
+/.idea/
+.idea
+.vscode
+
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Folders
+_obj
+_test
+_build
+.DS_Store
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# vim temp files
+*~
+*.swp
+*.swo

README.md

@@ -5,14 +5,14 @@ This plugin is a http client for micro.
 ## Overview
 
 The http client wraps `net/http` to provide a robust micro client with service discovery, load balancing and streaming. 
-It complies with the [micro.Client](https://godoc.org/go.unistack.org/micro-client-http/v4#Client) interface.
+It complies with the [micro.Client](https://godoc.org/go.unistack.org/micro-client-http/v3#Client) interface.
 
 ## Usage
 
 ### Use directly
 
 ```go
-import "go.unistack.org/micro-client-http/v4"
+import "go.unistack.org/micro-client-http/v3"
 
 service := micro.NewService(
 	micro.Name("my.service"),

go.mod

@@ -1,5 +1,15 @@
-module go.unistack.org/micro-client-http/v4
+module go.unistack.org/micro-client-http/v3
 
-go 1.19
+go 1.22
 
-require go.unistack.org/micro/v4 v4.0.18
+toolchain go1.23.1
+
+require go.unistack.org/micro/v3 v3.10.97
+
+require (
+	go.unistack.org/micro-proto/v3 v3.4.1 // indirect
+	golang.org/x/sys v0.26.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20241007155032-5fefd90f89a9 // indirect
+	google.golang.org/grpc v1.67.1 // indirect
+	google.golang.org/protobuf v1.35.1 // indirect
+)

go.sum

@@ -1,6 +1,39 @@
-go.unistack.org/micro/v4 v4.0.1 h1:xo1IxbVfgh8i0eY0VeYa3cbb13u5n/Mxnp3FOgWD4Jo=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
-go.unistack.org/micro/v4 v4.0.1/go.mod h1:p/J5UcSJjfHsWGT31uKoghQ5rUQZzQJBAFy+Z4+ZVMs=
+go.unistack.org/micro-proto/v3 v3.4.1 h1:UTjLSRz2YZuaHk9iSlVqqsA50JQNAEK2ZFboGqtEa9Q=
-go.unistack.org/micro/v4 v4.0.6 h1:YFWvTh3VwyOd6NHYTQcf47n2TF5+p/EhpnbuBQX3qhk=
+go.unistack.org/micro-proto/v3 v3.4.1/go.mod h1:okx/cnOhzuCX0ggl/vToatbCupi0O44diiiLLsZ93Zo=
-go.unistack.org/micro/v4 v4.0.6/go.mod h1:bVEYTlPi0EsdgZZt311bIroDg9ict7ky3C87dSCCAGk=
+go.unistack.org/micro/v3 v3.10.69 h1:V4g9LqUhzGab73U2aevnjtffCdJqGTuMfWY7fy4qGwI=
-go.unistack.org/micro/v4 v4.0.18 h1:b7WFwem8Nz1xBrRg5FeLnm9CE5gJseHyf9j0BhkiXW0=
+go.unistack.org/micro/v3 v3.10.69/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
-go.unistack.org/micro/v4 v4.0.18/go.mod h1:5+da5r835gP0WnNZbYUJDCvWpJ9Xc3IEGyp62e8o8R4=
+go.unistack.org/micro/v3 v3.10.88 h1:MxlzP+77Y6Kphb3lzHxROL4XfE/WdCQMQpnPv4D9Z8U=
+go.unistack.org/micro/v3 v3.10.88/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
+go.unistack.org/micro/v3 v3.10.91 h1:vuJY4tXwpqimwIkEJ3TozMYNVQQs+C5QMlQWPgSY/YM=
+go.unistack.org/micro/v3 v3.10.91/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
+go.unistack.org/micro/v3 v3.10.97 h1:8l7fv+i06/PjPrBBhRC/ZQkWGIOuHPg3jJN0vktYE78=
+go.unistack.org/micro/v3 v3.10.97/go.mod h1:YzMldzHN9Ei+zy5t/Psu7RUWDZwUfrNYiStSQtTz90g=
+golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
+golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
+golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.26.0 h1:KHjCJyddX0LoSTb3J+vWpupP9p0oznkqVk/IfjymZbo=
+golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240415180920-8c6c420018be h1:LG9vZxsWGOmUKieR8wPAUR3u3MpnYFQZROPIMaXh7/A=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240415180920-8c6c420018be/go.mod h1:WtryC6hu0hhx87FDGxWCDptyssuo68sk10vYjF+T9fY=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 h1:pPJltXNxVzT4pK9yD8vR9X75DaWYYmLGMsEvBfFQZzQ=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1/go.mod h1:UqMtugtsSgubUsoxbuAoiCXvqvErP7Gf0so0mK9tHxU=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20241007155032-5fefd90f89a9 h1:QCqS/PdaHTSWGvupk2F/ehwHtGc0/GYkT+3GAcR1CCc=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20241007155032-5fefd90f89a9/go.mod h1:GX3210XPVPUjJbTUbvwI8f2IpZDMZuPJWDzDuebbviI=
+google.golang.org/grpc v1.63.2 h1:MUeiw1B2maTVZthpU5xvASfTh3LDbxHd6IJ6QQVU+xM=
+google.golang.org/grpc v1.63.2/go.mod h1:WAX/8DgncnokcFUldAxq7GeB5DXHDbMF+lLvDomNkRA=
+google.golang.org/grpc v1.66.2 h1:3QdXkuq3Bkh7w+ywLdLvM56cmGvQHUMZpiCzt6Rqaoo=
+google.golang.org/grpc v1.66.2/go.mod h1:s3/l6xSSCURdVfAnL+TqCNMyTDAGN6+lZeVxnZR128Y=
+google.golang.org/grpc v1.67.0 h1:IdH9y6PF5MPSdAntIcpjQ+tXO41pcQsfZV2RxtQgVcw=
+google.golang.org/grpc v1.67.0/go.mod h1:1gLDyUQU7CTLJI90u3nXZ9ekeghjeM7pTDZlqFNg2AA=
+google.golang.org/grpc v1.67.1 h1:zWnc1Vrcno+lHZCOofnIMvycFcc0QRGIzm9dhnDX68E=
+google.golang.org/grpc v1.67.1/go.mod h1:1gLDyUQU7CTLJI90u3nXZ9ekeghjeM7pTDZlqFNg2AA=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
+google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
+google.golang.org/protobuf v1.35.1 h1:m3LfL6/Ca+fqnjnlqQXNpFPABW1UD7mjh8KO2mKFytA=
+google.golang.org/protobuf v1.35.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=

http.go

@@ -1,27 +1,32 @@
 // Package http provides a http client
-package http // import "go.unistack.org/micro-client-http/v4"
+package http // import "go.unistack.org/micro-client-http/v3"
 
 import (
 	"bufio"
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"net/url"
+	"os"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
 
-	"go.unistack.org/micro/v4/client"
+	"go.unistack.org/micro/v3/broker"
-	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v4/errors"
+	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v4/logger"
+	"go.unistack.org/micro/v3/errors"
-	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v3/logger"
-	"go.unistack.org/micro/v4/options"
+	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v4/selector"
+	"go.unistack.org/micro/v3/options"
-	rutil "go.unistack.org/micro/v4/util/reflect"
+	"go.unistack.org/micro/v3/selector"
+	"go.unistack.org/micro/v3/semconv"
+	"go.unistack.org/micro/v3/tracer"
+	rutil "go.unistack.org/micro/v3/util/reflect"
 )
 
 var DefaultContentType = "application/json"
@@ -34,10 +39,13 @@ func filterLabel(r []router.Route) []router.Route {
 */
 
 type httpClient struct {
-	httpcli *http.Client
+	funcPublish      client.FuncPublish
-	opts    client.Options
+	funcBatchPublish client.FuncBatchPublish
+	funcCall         client.FuncCall
+	funcStream       client.FuncStream
+	httpcli          *http.Client
+	opts             client.Options
 	sync.RWMutex
-	init bool
 }
 
 func newRequest(ctx context.Context, log logger.Logger, addr string, req client.Request, ct string, cf codec.Codec, msg interface{}, opts client.CallOptions) (*http.Request, error) {
@@ -115,7 +123,7 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 
 	u, err = u.Parse(path)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client", "%+v", err)
 	}
 
 	var nmsg interface{}
@@ -126,12 +134,12 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 	}
 
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client", "%+v", err)
 	}
 
 	u, err = url.Parse(fmt.Sprintf("%s://%s%s", scheme, host, path))
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client", "%+v", err)
 	}
 
 	var cookies []*http.Cookie
@@ -139,7 +147,7 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 	if opts.Context != nil {
 		if md, ok := opts.Context.Value(metadataKey{}).(metadata.Metadata); ok {
 			for k, v := range md {
-				header[k] = v
+				header.Set(k, v)
 			}
 		}
 	}
@@ -148,13 +156,13 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 	}
 	if opts.RequestMetadata != nil {
 		for k, v := range opts.RequestMetadata {
-			header[k] = v
+			header.Set(k, v)
 		}
 	}
 
 	if md, ok := metadata.FromOutgoingContext(ctx); ok {
 		for k, v := range md {
-			header[k] = v
+			header.Set(k, v)
 		}
 	}
 
@@ -174,11 +182,11 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 		for k, required := range vm {
 			v, err = rutil.StructFieldByPath(msg, k)
 			if err != nil {
-				return nil, errors.BadRequest("go.micro.client", err.Error())
+				return nil, errors.BadRequest("go.micro.client", "%+v", err)
 			}
 			if rutil.IsZero(v) {
 				if required == "true" {
-					return nil, errors.BadRequest("go.micro.client", fmt.Sprintf("required field %s not set", k))
+					return nil, errors.BadRequest("go.micro.client", "required field %s not set", k)
 				}
 				continue
 			}
@@ -194,12 +202,12 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 
 	b, err := cf.Marshal(nmsg)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client", "%+v", err)
 	}
 
 	var hreq *http.Request
 	if len(b) > 0 {
-		hreq, err = http.NewRequestWithContext(ctx, method, u.String(), ioutil.NopCloser(bytes.NewBuffer(b)))
+		hreq, err = http.NewRequestWithContext(ctx, method, u.String(), io.NopCloser(bytes.NewBuffer(b)))
 		hreq.ContentLength = int64(len(b))
 		header.Set("Content-Length", fmt.Sprintf("%d", hreq.ContentLength))
 	} else {
@@ -207,7 +215,7 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 	}
 
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client", "%+v", err)
 	}
 
 	hreq.Header = header
@@ -222,62 +230,62 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 	return hreq, nil
 }
 
-func (h *httpClient) call(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions) error {
+func (c *httpClient) call(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions) error {
 	ct := req.ContentType()
 	if len(opts.ContentType) > 0 {
 		ct = opts.ContentType
 	}
 
-	cf, err := h.newCodec(ct)
+	cf, err := c.newCodec(ct)
 	if err != nil {
-		return errors.BadRequest("go.micro.client", err.Error())
+		return errors.BadRequest("go.micro.client", "%+v", err)
 	}
-	hreq, err := newRequest(ctx, h.opts.Logger, addr, req, ct, cf, req.Body(), opts)
+	hreq, err := newRequest(ctx, c.opts.Logger, addr, req, ct, cf, req.Body(), opts)
 	if err != nil {
 		return err
 	}
 
 	// make the request
-	hrsp, err := h.httpcli.Do(hreq)
+	hrsp, err := c.httpcli.Do(hreq)
 	if err != nil {
 		switch err := err.(type) {
 		case *url.Error:
 			if err, ok := err.Err.(net.Error); ok && err.Timeout() {
-				return errors.Timeout("go.micro.client", err.Error())
+				return errors.Timeout("go.micro.client", "%+v", err)
 			}
 		case net.Error:
 			if err.Timeout() {
-				return errors.Timeout("go.micro.client", err.Error())
+				return errors.Timeout("go.micro.client", "%+v", err)
 			}
 		}
-		return errors.InternalServerError("go.micro.client", err.Error())
+		return errors.InternalServerError("go.micro.client", "%+v", err)
 	}
 
 	defer hrsp.Body.Close()
 
-	return h.parseRsp(ctx, hrsp, rsp, opts)
+	return c.parseRsp(ctx, hrsp, rsp, opts)
 }
 
-func (h *httpClient) stream(ctx context.Context, addr string, req client.Request, opts client.CallOptions) (client.Stream, error) {
+func (c *httpClient) stream(ctx context.Context, addr string, req client.Request, opts client.CallOptions) (client.Stream, error) {
 	ct := req.ContentType()
 	if len(opts.ContentType) > 0 {
 		ct = opts.ContentType
 	}
 
 	// get codec
-	cf, err := h.newCodec(ct)
+	cf, err := c.newCodec(ct)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client", "%+v", err)
 	}
 
-	cc, err := (h.httpcli.Transport).(*http.Transport).DialContext(ctx, "tcp", addr)
+	cc, err := (c.httpcli.Transport).(*http.Transport).DialContext(ctx, "tcp", addr)
 	if err != nil {
-		return nil, errors.InternalServerError("go.micro.client", fmt.Sprintf("Error dialing: %v", err))
+		return nil, errors.InternalServerError("go.micro.client", "Error dialing: %v", err)
 	}
 
 	return &httpStream{
 		address: addr,
-		logger:  h.opts.Logger,
+		logger:  c.opts.Logger,
 		context: ctx,
 		closed:  make(chan bool),
 		opts:    opts,
@@ -289,56 +297,88 @@ func (h *httpClient) stream(ctx context.Context, addr string, req client.Request
 	}, nil
 }
 
-func (h *httpClient) newCodec(ct string) (codec.Codec, error) {
+func (c *httpClient) newCodec(ct string) (codec.Codec, error) {
-	h.RLock()
+	c.RLock()
-	defer h.RUnlock()
 
 	if idx := strings.IndexRune(ct, ';'); idx >= 0 {
 		ct = ct[:idx]
 	}
 
-	if c, ok := h.opts.Codecs[ct]; ok {
+	if cf, ok := c.opts.Codecs[ct]; ok {
-		return c, nil
+		c.RUnlock()
+		return cf, nil
 	}
 
+	c.RUnlock()
 	return nil, codec.ErrUnknownContentType
 }
 
-func (h *httpClient) Init(opts ...options.Option) error {
+func (c *httpClient) Init(opts ...client.Option) error {
-	if len(opts) == 0 && h.init {
-		return nil
-	}
 	for _, o := range opts {
-		o(&h.opts)
+		o(&c.opts)
 	}
 
-	if err := h.opts.Tracer.Init(); err != nil {
+	c.funcCall = c.fnCall
-		return err
+	c.funcStream = c.fnStream
-	}
+	c.funcPublish = c.fnPublish
-	if err := h.opts.Router.Init(); err != nil {
+	c.funcBatchPublish = c.fnBatchPublish
-		return err
+
-	}
+	c.opts.Hooks.EachPrev(func(hook options.Hook) {
-	if err := h.opts.Logger.Init(); err != nil {
+		switch h := hook.(type) {
-		return err
+		case client.HookCall:
-	}
+			c.funcCall = h(c.funcCall)
-	if err := h.opts.Meter.Init(); err != nil {
+		case client.HookStream:
-		return err
+			c.funcStream = h(c.funcStream)
-	}
+		case client.HookPublish:
+			c.funcPublish = h(c.funcPublish)
+		case client.HookBatchPublish:
+			c.funcBatchPublish = h(c.funcBatchPublish)
+		}
+	})
 
 	return nil
 }
 
-func (h *httpClient) Options() client.Options {
+func (c *httpClient) Options() client.Options {
-	return h.opts
+	return c.opts
 }
 
-func (h *httpClient) NewRequest(service, method string, req interface{}, opts ...options.Option) client.Request {
+func (c *httpClient) NewMessage(topic string, msg interface{}, opts ...client.MessageOption) client.Message {
-	return newHTTPRequest(service, method, req, h.opts.ContentType, opts...)
+	return newHTTPMessage(topic, msg, c.opts.ContentType, opts...)
 }
 
-func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...options.Option) error {
+func (c *httpClient) NewRequest(service, method string, req interface{}, opts ...client.RequestOption) client.Request {
+	return newHTTPRequest(service, method, req, c.opts.ContentType, opts...)
+}
+
+func (c *httpClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
+	ts := time.Now()
+	c.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Inc()
+	var sp tracer.Span
+	ctx, sp = c.opts.Tracer.Start(ctx, req.Endpoint()+" rpc-client",
+		tracer.WithSpanKind(tracer.SpanKindClient),
+		tracer.WithSpanLabels("endpoint", req.Endpoint()),
+	)
+	err := c.funcCall(ctx, req, rsp, opts...)
+	c.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Dec()
+	te := time.Since(ts)
+	c.opts.Meter.Summary(semconv.ClientRequestLatencyMicroseconds, "endpoint", req.Endpoint()).Update(te.Seconds())
+	c.opts.Meter.Histogram(semconv.ClientRequestDurationSeconds, "endpoint", req.Endpoint()).Update(te.Seconds())
+
+	if me := errors.FromError(err); me == nil {
+		sp.Finish()
+		c.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "success", "code", strconv.Itoa(int(200))).Inc()
+	} else {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		c.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "failure", "code", strconv.Itoa(int(me.Code))).Inc()
+	}
+
+	return err
+}
+
+func (c *httpClient) fnCall(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
 	// make a copy of call opts
-	callOpts := h.opts.CallOptions
+	callOpts := c.opts.CallOptions
 	for _, opt := range opts {
 		opt(&callOpts)
 	}
@@ -353,9 +393,8 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 	} else {
 		// got a deadline so no need to setup context
 		// but we need to set the timeout we pass along
-		if err := options.Set(&callOpts, time.Until(d), ".RequestTimeout"); err != nil {
+		opt := client.WithRequestTimeout(time.Until(d))
-			return errors.New("go.micro.client", fmt.Sprintf("%v", err.Error()), 400)
+		opt(&callOpts)
-		}
 	}
 
 	// should we noop right here?
@@ -366,26 +405,21 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 	}
 
 	// make copy of call method
-	hcall := h.call
+	hcall := c.call
-
-	// wrap the call in reverse
-	//for i := len(callOpts.CallWrappers); i > 0; i-- {
-	//	hcall = callOpts.CallWrappers[i-1](hcall)
-	//}
 
 	// use the router passed as a call option, or fallback to the rpc clients router
 	if callOpts.Router == nil {
-		callOpts.Router = h.opts.Router
+		callOpts.Router = c.opts.Router
 	}
 
 	if callOpts.Selector == nil {
-		callOpts.Selector = h.opts.Selector
+		callOpts.Selector = c.opts.Selector
 	}
 
 	// inject proxy address
 	// TODO: don't even bother using Lookup/Select in this case
-	if len(h.opts.Proxy) > 0 {
+	if len(c.opts.Proxy) > 0 {
-		callOpts.Address = []string{h.opts.Proxy}
+		callOpts.Address = []string{c.opts.Proxy}
 	}
 
 	var next selector.Next
@@ -395,7 +429,7 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 		// call backoff first. Someone may want an initial start delay
 		t, err := callOpts.Backoff(ctx, req, i)
 		if err != nil {
-			return errors.InternalServerError("go.micro.client", err.Error())
+			return errors.InternalServerError("go.micro.client", "%+v", err)
 		}
 
 		// only sleep if greater than 0
@@ -407,9 +441,9 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 			var routes []string
 			// lookup the route to send the reques to
 			// TODO apply any filtering here
-			routes, err = h.opts.Lookup(ctx, req, callOpts)
+			routes, err = c.opts.Lookup(ctx, req, callOpts)
 			if err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
+				return errors.InternalServerError("go.micro.client", "%+v", err)
 			}
 
 			// balance the list of nodes
@@ -424,7 +458,7 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 		// make the call
 		err = hcall(ctx, node, req, rsp, callOpts)
 		// record the result of the call to inform future routing decisions
-		if verr := h.opts.Selector.Record(node, err); verr != nil {
+		if verr := c.opts.Selector.Record(node, err); verr != nil {
 			return verr
 		}
 
@@ -469,11 +503,36 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 	return gerr
 }
 
-func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...options.Option) (client.Stream, error) {
+func (c *httpClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
+	ts := time.Now()
+	c.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Inc()
+	var sp tracer.Span
+	ctx, sp = c.opts.Tracer.Start(ctx, req.Endpoint()+" rpc-client",
+		tracer.WithSpanKind(tracer.SpanKindClient),
+		tracer.WithSpanLabels("endpoint", req.Endpoint()),
+	)
+	stream, err := c.funcStream(ctx, req, opts...)
+	c.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Dec()
+	te := time.Since(ts)
+	c.opts.Meter.Summary(semconv.ClientRequestLatencyMicroseconds, "endpoint", req.Endpoint()).Update(te.Seconds())
+	c.opts.Meter.Histogram(semconv.ClientRequestDurationSeconds, "endpoint", req.Endpoint()).Update(te.Seconds())
+
+	if me := errors.FromError(err); me == nil {
+		sp.Finish()
+		c.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "success", "code", strconv.Itoa(int(200))).Inc()
+	} else {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		c.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "failure", "code", strconv.Itoa(int(me.Code))).Inc()
+	}
+
+	return stream, err
+}
+
+func (c *httpClient) fnStream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
 	var err error
 
 	// make a copy of call opts
-	callOpts := h.opts.CallOptions
+	callOpts := c.opts.CallOptions
 	for _, o := range opts {
 		o(&callOpts)
 	}
@@ -488,9 +547,8 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 	} else {
 		// got a deadline so no need to setup context
 		// but we need to set the timeout we pass along
-		if err = options.Set(&callOpts, time.Until(d), ".StreamTimeout"); err != nil {
+		o := client.WithStreamTimeout(time.Until(d))
-			return nil, errors.New("go.micro.client", fmt.Sprintf("%v", err.Error()), 400)
+		o(&callOpts)
-		}
 	}
 
 	// should we noop right here?
@@ -511,17 +569,17 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 
 	// use the router passed as a call option, or fallback to the rpc clients router
 	if callOpts.Router == nil {
-		callOpts.Router = h.opts.Router
+		callOpts.Router = c.opts.Router
 	}
 
 	if callOpts.Selector == nil {
-		callOpts.Selector = h.opts.Selector
+		callOpts.Selector = c.opts.Selector
 	}
 
 	// inject proxy address
 	// TODO: don't even bother using Lookup/Select in this case
-	if len(h.opts.Proxy) > 0 {
+	if len(c.opts.Proxy) > 0 {
-		callOpts.Address = []string{h.opts.Proxy}
+		callOpts.Address = []string{c.opts.Proxy}
 	}
 
 	var next selector.Next
@@ -530,7 +588,7 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 		// call backoff first. Someone may want an initial start delay
 		t, cerr := callOpts.Backoff(ctx, req, i)
 		if cerr != nil {
-			return nil, errors.InternalServerError("go.micro.client", cerr.Error())
+			return nil, errors.InternalServerError("go.micro.client", "%+v", cerr)
 		}
 
 		// only sleep if greater than 0
@@ -542,9 +600,9 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 			var routes []string
 			// lookup the route to send the reques to
 			// TODO apply any filtering here
-			routes, err = h.opts.Lookup(ctx, req, callOpts)
+			routes, err = c.opts.Lookup(ctx, req, callOpts)
 			if err != nil {
-				return nil, errors.InternalServerError("go.micro.client", err.Error())
+				return nil, errors.InternalServerError("go.micro.client", "%+v", err)
 			}
 
 			// balance the list of nodes
@@ -556,10 +614,10 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 
 		node := next()
 
-		stream, cerr := h.stream(ctx, node, req, callOpts)
+		stream, cerr := c.stream(ctx, node, req, callOpts)
 
 		// record the result of the call to inform future routing decisions
-		if verr := h.opts.Selector.Record(node, cerr); verr != nil {
+		if verr := c.opts.Selector.Record(node, cerr); verr != nil {
 			return nil, verr
 		}
 
@@ -610,22 +668,100 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 	return nil, grr
 }
 
-func (h *httpClient) String() string {
+func (c *httpClient) BatchPublish(ctx context.Context, p []client.Message, opts ...client.PublishOption) error {
+	return c.funcBatchPublish(ctx, p, opts...)
+}
+
+func (c *httpClient) fnBatchPublish(ctx context.Context, p []client.Message, opts ...client.PublishOption) error {
+	return c.publish(ctx, p, opts...)
+}
+
+func (c *httpClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
+	return c.funcPublish(ctx, p, opts...)
+}
+
+func (c *httpClient) fnPublish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
+	return c.publish(ctx, []client.Message{p}, opts...)
+}
+
+func (c *httpClient) publish(ctx context.Context, ps []client.Message, opts ...client.PublishOption) error {
+	var body []byte
+
+	options := client.NewPublishOptions(opts...)
+
+	// get proxy
+	exchange := ""
+	if v, ok := os.LookupEnv("MICRO_PROXY"); ok {
+		exchange = v
+	}
+	// get the exchange
+	if len(options.Exchange) > 0 {
+		exchange = options.Exchange
+	}
+
+	omd, ok := metadata.FromOutgoingContext(ctx)
+	if !ok {
+		omd = metadata.New(2)
+	}
+
+	msgs := make([]*broker.Message, 0, len(ps))
+
+	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 {
+			body = d.Data
+		} else {
+			// use codec for payload
+			cf, err := c.newCodec(p.ContentType())
+			if err != nil {
+				return errors.InternalServerError("go.micro.client", "%+v", err)
+			}
+			// set the body
+			b, err := cf.Marshal(p.Payload())
+			if err != nil {
+				return errors.InternalServerError("go.micro.client", "%+v", err)
+			}
+			body = b
+		}
+
+		msgs = append(msgs, &broker.Message{Header: md, Body: body})
+	}
+
+	return c.opts.Broker.BatchPublish(ctx, msgs,
+		broker.PublishContext(ctx),
+		broker.PublishBodyOnly(options.BodyOnly),
+	)
+}
+
+func (c *httpClient) String() string {
 	return "http"
 }
 
-func (h *httpClient) Name() string {
+func (c *httpClient) Name() string {
-	return h.opts.Name
+	return c.opts.Name
 }
 
-func NewClient(opts ...options.Option) client.Client {
+func NewClient(opts ...client.Option) *httpClient {
 	options := client.NewOptions(opts...)
 
 	if len(options.ContentType) == 0 {
 		options.ContentType = DefaultContentType
 	}
 
-	rc := &httpClient{
+	c := &httpClient{
 		opts: options,
 	}
 
@@ -648,7 +784,7 @@ func NewClient(opts ...options.Option) client.Client {
 	}
 
 	if httpcli, ok := options.Context.Value(httpClientKey{}).(*http.Client); ok {
-		rc.httpcli = httpcli
+		c.httpcli = httpcli
 	} else {
 		// TODO customTransport := http.DefaultTransport.(*http.Transport).Clone()
 		tr := &http.Transport{
@@ -664,9 +800,13 @@ func NewClient(opts ...options.Option) client.Client {
 			ExpectContinueTimeout: 1 * time.Second,
 			TLSClientConfig:       options.TLSConfig,
 		}
-		rc.httpcli = &http.Client{Transport: tr}
+		c.httpcli = &http.Client{Transport: tr}
 	}
-	c := client.Client(rc)
+
+	c.funcCall = c.fnCall
+	c.funcStream = c.fnStream
+	c.funcPublish = c.fnPublish
+	c.funcBatchPublish = c.fnBatchPublish
 
 	return c
 }

http_test.go

@@ -1,21 +1,60 @@
 package http
 
 import (
+	"encoding/json"
+	"fmt"
 	"net/url"
 	"strings"
 	"testing"
 )
 
-type Request struct {
+func TestNestedPathPost(t *testing.T) {
-	Name     string `json:"name"`
+	req := &request{Name: "first", Field1: "fieldval"}
-	Field1   string `json:"field1"`
+	p, m, err := newPathRequest("/api/v1/xxxx", "POST", "*", req, []string{"json", "protobuf"}, nil)
-	ClientID string
+	if err != nil {
-	Field2   string
+		t.Fatal(err)
-	Field3   int64
+	}
+	u, err := url.Parse(p)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if s := u.String(); s != "/api/v1/xxxx" {
+		t.Fatalf("nested path error %s", s)
+	}
+	_ = m
+}
+
+type request struct {
+	NestedTest *request `json:"nested_test,omitempty"`
+	Name       string   `json:"name,omitempty"`
+	Field1     string   `json:"field1,omitempty"`
+	ClientID   string   `json:",omitempty"`
+	Field2     string   `json:",omitempty"`
+	Field3     int64    `json:",omitempty"`
+}
+
+func TestNestedPath(t *testing.T) {
+	req := &request{Name: "first", NestedTest: &request{Name: "second"}, Field1: "fieldval"}
+	p, m, err := newPathRequest("/api/v1/{name}/{nested_test.name}", "PUT", "*", req, []string{"json", "protobuf"}, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	u, err := url.Parse(p)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if s := u.String(); s != "/api/v1/first/second" {
+		t.Fatalf("nested path error %s", s)
+	}
+	b, err := json.Marshal(m)
+	if err != nil {
+		t.Fatal(err)
+	}
+	fmt.Printf("m %#+v %s\n", m, b)
 }
 
 func TestPathWithHeader(t *testing.T) {
-	req := &Request{Name: "vtolstov", Field1: "field1", ClientID: "1234567890"}
+	req := &request{Name: "vtolstov", Field1: "field1", ClientID: "1234567890"}
 	p, m, err := newPathRequest(
 		"/api/v1/test?Name={name}&Field1={field1}",
 		"POST",
@@ -40,7 +79,7 @@ func TestPathWithHeader(t *testing.T) {
 }
 
 func TestPathValues(t *testing.T) {
-	req := &Request{Name: "vtolstov", Field1: "field1"}
+	req := &request{Name: "vtolstov", Field1: "field1"}
 	p, m, err := newPathRequest("/api/v1/test?Name={name}&Field1={field1}", "POST", "*", req, nil, nil)
 	if err != nil {
 		t.Fatal(err)
@@ -56,7 +95,7 @@ func TestPathValues(t *testing.T) {
 }
 
 func TestValidPath(t *testing.T) {
-	req := &Request{Name: "vtolstov", Field1: "field1", Field2: "field2", Field3: 10}
+	req := &request{Name: "vtolstov", Field1: "field1", Field2: "field2", Field3: 10}
 	p, m, err := newPathRequest("/api/v1/{name}/list", "GET", "", req, nil, nil)
 	if err != nil {
 		t.Fatal(err)
@@ -73,9 +112,9 @@ func TestValidPath(t *testing.T) {
 }
 
 func TestInvalidPath(t *testing.T) {
-	req := &Request{Name: "vtolstov", Field1: "field1", Field2: "field2", Field3: 10}
+	req := &request{Name: "vtolstov", Field1: "field1", Field2: "field2", Field3: 10}
-	_, _, err := newPathRequest("/api/v1/{xname}/list", "GET", "", req, nil, nil)
+	s, _, err := newPathRequest("/api/v1/{xname}/list", "GET", "", req, nil, nil)
 	if err == nil {
-		t.Fatal("path param must not be filled")
+		t.Fatalf("path param must not be filled: %s", s)
 	}
 }

message.go

@@ -0,0 +1,44 @@
+package http
+
+import (
+	"go.unistack.org/micro/v3/client"
+	"go.unistack.org/micro/v3/metadata"
+)
+
+type httpMessage struct {
+	payload     interface{}
+	topic       string
+	contentType string
+	opts        client.MessageOptions
+}
+
+func newHTTPMessage(topic string, payload interface{}, contentType string, opts ...client.MessageOption) client.Message {
+	options := client.NewMessageOptions(opts...)
+
+	if len(options.ContentType) > 0 {
+		contentType = options.ContentType
+	}
+
+	return &httpMessage{
+		payload:     payload,
+		topic:       topic,
+		contentType: contentType,
+		opts:        options,
+	}
+}
+
+func (h *httpMessage) ContentType() string {
+	return h.contentType
+}
+
+func (h *httpMessage) Topic() string {
+	return h.topic
+}
+
+func (h *httpMessage) Payload() interface{} {
+	return h.payload
+}
+
+func (h *httpMessage) Metadata() metadata.Metadata {
+	return h.opts.Metadata
+}

options.go

@@ -4,8 +4,8 @@ import (
 	"net"
 	"net/http"
 
-	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v4/options"
+	"go.unistack.org/micro/v3/metadata"
 )
 
 var (
@@ -29,98 +29,98 @@ var (
 type poolMaxStreams struct{}
 
 // PoolMaxStreams maximum streams on a connectioin
-func PoolMaxStreams(n int) options.Option {
+func PoolMaxStreams(n int) client.Option {
-	return options.ContextOption(poolMaxStreams{}, n)
+	return client.SetOption(poolMaxStreams{}, n)
 }
 
 type poolMaxIdle struct{}
 
 // PoolMaxIdle maximum idle conns of a pool
-func PoolMaxIdle(d int) options.Option {
+func PoolMaxIdle(d int) client.Option {
-	return options.ContextOption(poolMaxIdle{}, d)
+	return client.SetOption(poolMaxIdle{}, d)
 }
 
 type maxRecvMsgSizeKey struct{}
 
 // MaxRecvMsgSize set the maximum size of message that client can receive.
-func MaxRecvMsgSize(s int) options.Option {
+func MaxRecvMsgSize(s int) client.Option {
-	return options.ContextOption(maxRecvMsgSizeKey{}, s)
+	return client.SetOption(maxRecvMsgSizeKey{}, s)
 }
 
 type maxSendMsgSizeKey struct{}
 
 // MaxSendMsgSize set the maximum size of message that client can send.
-func MaxSendMsgSize(s int) options.Option {
+func MaxSendMsgSize(s int) client.Option {
-	return options.ContextOption(maxSendMsgSizeKey{}, s)
+	return client.SetOption(maxSendMsgSizeKey{}, s)
 }
 
 type httpClientKey struct{}
 
 // nolint: golint
 // HTTPClient pass http.Client option to client Call
-func HTTPClient(c *http.Client) options.Option {
+func HTTPClient(c *http.Client) client.Option {
-	return options.ContextOption(httpClientKey{}, c)
+	return client.SetOption(httpClientKey{}, c)
 }
 
 type httpDialerKey struct{}
 
 // nolint: golint
 // HTTPDialer pass net.Dialer option to client
-func HTTPDialer(d *net.Dialer) options.Option {
+func HTTPDialer(d *net.Dialer) client.Option {
-	return options.ContextOption(httpDialerKey{}, d)
+	return client.SetOption(httpDialerKey{}, d)
 }
 
 type methodKey struct{}
 
 // Method pass method option to client Call
-func Method(m string) options.Option {
+func Method(m string) client.CallOption {
-	return options.ContextOption(methodKey{}, m)
+	return client.SetCallOption(methodKey{}, m)
 }
 
 type pathKey struct{}
 
 // Path spcecifies path option to client Call
-func Path(p string) options.Option {
+func Path(p string) client.CallOption {
-	return options.ContextOption(pathKey{}, p)
+	return client.SetCallOption(pathKey{}, p)
 }
 
 type bodyKey struct{}
 
 // Body specifies body option to client Call
-func Body(b string) options.Option {
+func Body(b string) client.CallOption {
-	return options.ContextOption(bodyKey{}, b)
+	return client.SetCallOption(bodyKey{}, b)
 }
 
 type errorMapKey struct{}
 
-func ErrorMap(m map[string]interface{}) options.Option {
+func ErrorMap(m map[string]interface{}) client.CallOption {
-	return options.ContextOption(errorMapKey{}, m)
+	return client.SetCallOption(errorMapKey{}, m)
 }
 
 type structTagsKey struct{}
 
 // StructTags pass tags slice option to client Call
-func StructTags(tags []string) options.Option {
+func StructTags(tags []string) client.CallOption {
-	return options.ContextOption(structTagsKey{}, tags)
+	return client.SetCallOption(structTagsKey{}, tags)
 }
 
 type metadataKey struct{}
 
 // Metadata pass metadata to client Call
-func Metadata(md metadata.Metadata) options.Option {
+func Metadata(md metadata.Metadata) client.CallOption {
-	return options.ContextOption(metadataKey{}, md)
+	return client.SetCallOption(metadataKey{}, md)
 }
 
 type cookieKey struct{}
 
 // Cookie pass cookie to client Call
-func Cookie(cookies ...string) options.Option {
+func Cookie(cookies ...string) client.CallOption {
-	return options.ContextOption(cookieKey{}, cookies)
+	return client.SetCallOption(cookieKey{}, cookies)
 }
 
 type headerKey struct{}
 
 // Header pass cookie to client Call
-func Header(headers ...string) options.Option {
+func Header(headers ...string) client.CallOption {
-	return options.ContextOption(headerKey{}, headers)
+	return client.SetCallOption(headerKey{}, headers)
 }

request.go

@@ -1,9 +1,8 @@
 package http
 
 import (
-	"go.unistack.org/micro/v4/client"
+	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v4/options"
 )
 
 type httpRequest struct {
@@ -14,7 +13,7 @@ type httpRequest struct {
 	opts        client.RequestOptions
 }
 
-func newHTTPRequest(service, method string, request interface{}, contentType string, opts ...options.Option) client.Request {
+func newHTTPRequest(service, method string, request interface{}, contentType string, opts ...client.RequestOption) client.Request {
 	options := client.NewRequestOptions(opts...)
 	if len(options.ContentType) == 0 {
 		options.ContentType = contentType

stream.go

@@ -9,10 +9,10 @@ import (
 	"net/http"
 	"sync"
 
-	"go.unistack.org/micro/v4/client"
+	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v4/errors"
+	"go.unistack.org/micro/v3/errors"
-	"go.unistack.org/micro/v4/logger"
+	"go.unistack.org/micro/v3/logger"
 )
 
 // Implements the streamer interface
@@ -90,7 +90,7 @@ func (h *httpStream) Recv(msg interface{}) error {
 
 	hrsp, err := http.ReadResponse(h.reader, new(http.Request))
 	if err != nil {
-		return errors.InternalServerError("go.micro.client", err.Error())
+		return errors.InternalServerError("go.micro.client", "%+v", err)
 	}
 	defer hrsp.Body.Close()
 
@@ -136,7 +136,7 @@ func (h *httpStream) parseRsp(ctx context.Context, log logger.Logger, hrsp *http
 				if log.V(logger.ErrorLevel) {
 					log.Error(ctx, "failed to read body", err)
 				}
-				return errors.InternalServerError("go.micro.client", string(buf))
+				return errors.InternalServerError("go.micro.client", "%s", buf)
 			}
 		}
 
@@ -146,7 +146,7 @@ func (h *httpStream) parseRsp(ctx context.Context, log logger.Logger, hrsp *http
 
 		if hrsp.StatusCode < 400 {
 			if err = cf.Unmarshal(buf, rsp); err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
+				return errors.InternalServerError("go.micro.client", "%+v", err)
 			}
 			return nil
 		}
@@ -163,7 +163,7 @@ func (h *httpStream) parseRsp(ctx context.Context, log logger.Logger, hrsp *http
 		}
 
 		if cerr := cf.Unmarshal(buf, rerr); cerr != nil {
-			return errors.InternalServerError("go.micro.client", cerr.Error())
+			return errors.InternalServerError("go.micro.client", "%+v", cerr)
 		}
 
 		if err, ok = rerr.(error); !ok {

util.go

@@ -10,11 +10,11 @@ import (
 	"strings"
 	"sync"
 
-	"go.unistack.org/micro/v4/client"
+	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v4/errors"
+	"go.unistack.org/micro/v3/errors"
-	"go.unistack.org/micro/v4/logger"
+	"go.unistack.org/micro/v3/logger"
-	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v3/metadata"
-	rutil "go.unistack.org/micro/v4/util/reflect"
+	rutil "go.unistack.org/micro/v3/util/reflect"
 )
 
 var (
@@ -87,6 +87,8 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 
 	values := url.Values{}
 	// copy cycle
+
+	cleanPath := make(map[string]bool)
 	for i := 0; i < tmsg.NumField(); i++ {
 		val := tmsg.Field(i)
 		if val.IsZero() {
@@ -121,6 +123,7 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 			default:
 				t = &tag{key: tn, name: tp[0]}
 			}
+
 			if t.name != "" {
 				break
 			}
@@ -154,18 +157,63 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 			default:
 				fieldsmap[t.name] = getParam(val)
 			}
-		} else if (body == "*" || body == t.name) && method != http.MethodGet {
-			if tnmsg.Field(i).CanSet() {
-				tnmsg.Field(i).Set(val)
-			}
 		} else {
-			if val.Type().Kind() == reflect.Slice {
+			for k, v := range fieldsmap {
-				for idx := 0; idx < val.Len(); idx++ {
+				isSet := false
-					values.Add(t.name, getParam(val.Index(idx)))
+				if v != "" {
+					continue
+				}
+				var clean []string
+				fld := msg
+
+				parts := strings.Split(k, ".")
+
+				for idx := 0; idx < len(parts); idx++ {
+					var nfld interface{}
+					var name string
+					if tags == nil {
+						tags = []string{"json"}
+					}
+				tagsloop:
+					for ti := 0; ti < len(tags); ti++ {
+						name, nfld, err = rutil.StructFieldNameByTag(fld, tags[ti], parts[idx])
+						if err == nil {
+							clean = append(clean, name)
+							break tagsloop
+						}
+					}
+					if err == nil {
+						fld = nfld
+						if len(parts)-1 == idx {
+							isSet = true
+							fieldsmap[k] = fmt.Sprintf("%v", fld)
+
+						}
+					}
+				}
+				if isSet {
+					cleanPath[strings.Join(clean, ".")] = true
 				}
-			} else {
-				values.Add(t.name, getParam(val))
 			}
+			for k := range cleanPath {
+				if err = rutil.ZeroFieldByPath(nmsg, k); err != nil {
+					return "", nil, err
+				}
+			}
+			if (body == "*" || body == t.name) && method != http.MethodGet {
+				if tnmsg.Field(i).CanSet() {
+					tnmsg.Field(i).Set(val)
+				}
+			} else if method == http.MethodGet {
+				if val.Type().Kind() == reflect.Slice {
+					for idx := 0; idx < val.Len(); idx++ {
+						values.Add(t.name, getParam(val.Index(idx)))
+					}
+				} else if !rutil.IsEmpty(val) {
+					values.Add(t.name, getParam(val))
+				}
+			}
+
 		}
 	}
 
@@ -217,6 +265,8 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 		_, _ = b.WriteString(values.Encode())
 	}
 
+	// rutil.ZeroEmpty(tnmsg.Interface())
+
 	if rutil.IsZero(nmsg) && !isEmptyStruct(nmsg) {
 		return b.String(), nil, nil
 	}
@@ -284,7 +334,7 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 				if h.opts.Logger.V(logger.ErrorLevel) {
 					h.opts.Logger.Error(ctx, "failed to read body", err)
 				}
-				return errors.InternalServerError("go.micro.client", string(buf))
+				return errors.InternalServerError("go.micro.client", "%s", buf)
 			}
 		}
 
@@ -293,7 +343,7 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 			if h.opts.Logger.V(logger.DebugLevel) {
 				h.opts.Logger.Debug(ctx, fmt.Sprintf("response with %v unknown content-type %s %s", hrsp.Header, ct, buf))
 			}
-			return errors.InternalServerError("go.micro.client", cerr.Error())
+			return errors.InternalServerError("go.micro.client", "%+v", cerr)
 		}
 
 		if h.opts.Logger.V(logger.DebugLevel) {
@@ -303,7 +353,7 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 		// succeseful response
 		if hrsp.StatusCode < 400 {
 			if err = cf.Unmarshal(buf, rsp); err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
+				return errors.InternalServerError("go.micro.client", "%+v", err)
 			}
 			return nil
 		}
@@ -323,7 +373,7 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 		}
 
 		if cerr := cf.Unmarshal(buf, rerr); cerr != nil {
-			return errors.InternalServerError("go.micro.client", cerr.Error())
+			return errors.InternalServerError("go.micro.client", "%+v", cerr)
 		}
 
 		if err, ok = rerr.(error); !ok {

util_test.go

@@ -1,6 +1,7 @@
 package http
 
 import (
+	"net/http"
 	"net/url"
 	"testing"
 )
@@ -52,10 +53,16 @@ func TestNewPathRequest(t *testing.T) {
 		if err != nil {
 			t.Fatal(err)
 		}
-		vals := u.Query()
+		switch m {
-		if v, ok := vals["name"]; !ok || v[0] != "test_name" {
+		case http.MethodPost, http.MethodPut, http.MethodPatch, http.MethodDelete:
-			t.Fatalf("invalid path: %v nmsg: %v", path, nmsg)
+			break
+		case http.MethodGet:
+			vals := u.Query()
+			if v, ok := vals["name"]; !ok || v[0] != "test_name" {
+				t.Fatalf("%s invalid path: %v nmsg: %v", m, path, nmsg)
+			}
 		}
+
 	}
 }
 
@@ -119,7 +126,7 @@ func TestNewPathVarRequest(t *testing.T) {
 				t.Fatalf("invalid nmsg: %#+v\n", nmsg)
 			}
 			if nmsg.(*Message).Name != "test_name" {
-				t.Fatalf("invalid nmsg: %v nmsg: %v", path, nmsg)
+				t.Fatalf("invalid path: %v nmsg: %#+v", path, nmsg)
 			}
 		} else {
 			vals := u.Query()