hotfix (#186)

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1. Give a descriptive title to your PR.
2. Provide a description of your changes.
3. Make sure you have some relevant tests.
4. Put `closes #XXXX` in your comment to auto-close the issue that your PR fixes (if applicable).

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Co-authored-by: Gorbunov Kirill Andreevich <kgorbunov@mtsbank.ru>
Reviewed-on: #186
Co-authored-by: Кирилл Горбунов <kirya_gorbunov_2015@mail.ru>
Co-committed-by: Кирилл Горбунов <kirya_gorbunov_2015@mail.ru>

.gitignore

@@ -0,0 +1,24 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+bin
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# General
+.DS_Store
+.idea
+.vscode

README.md

@@ -9,8 +9,8 @@ to create a HTTP Server that could potentially be used for REST based API servic
 import (
 	"net/http"
 
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
-	httpServer "github.com/unistack-org/micro-server-http"
+	httpServer "go.unistack.org/micro-server-http/v4"
 )
 
 func main() {
@@ -37,9 +37,9 @@ Or as part of a service
 import (
 	"net/http"
 
-	"github.com/unistack-org/micro/v3"
+	"go.unistack.org/micro/v4"
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
-	httpServer "github.com/unistack-org/micro-server-http"
+	httpServer "go.unistack.org/micro-server-http/v4"
 )
 
 func main() {

go.mod

@@ -1,16 +1,25 @@
-module go.unistack.org/micro-server-http/v3
+module go.unistack.org/micro-server-http/v4
 
-go 1.18
+go 1.19
 
 require (
-	go.unistack.org/micro-proto/v3 v3.3.1
+	go.unistack.org/micro-codec-yaml/v4 v4.0.0
-	go.unistack.org/micro/v3 v3.10.14
+	go.unistack.org/micro-proto/v4 v4.0.1
-	golang.org/x/net v0.7.0
+	go.unistack.org/micro/v4 v4.0.17
+	go.unistack.org/protoc-gen-go-micro/v4 v4.0.13
+	golang.org/x/net v0.22.0
 )
 
 require (
-	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/fatih/structtag v1.2.0 // indirect
-	github.com/google/gnostic v0.6.9 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
+	github.com/google/gnostic v0.7.0 // indirect
+	github.com/google/gnostic-models v0.6.9-0.20230804172637-c7be7c783f49 // indirect
+	golang.org/x/mod v0.16.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/tools v0.19.0 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
+	sigs.k8s.io/yaml v1.4.0 // indirect
 )

handler.go

@@ -9,20 +9,20 @@ import (
 	"strings"
 	"sync"
 
-	"go.unistack.org/micro/v3/errors"
+	"go.unistack.org/micro/v4/errors"
-	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v4/logger"
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/metadata"
-	"go.unistack.org/micro/v3/register"
+	"go.unistack.org/micro/v4/register"
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
-	rhttp "go.unistack.org/micro/v3/util/http"
+	rhttp "go.unistack.org/micro/v4/util/http"
-	rflutil "go.unistack.org/micro/v3/util/reflect"
+	rflutil "go.unistack.org/micro/v4/util/reflect"
 )
 
 var (
-	DefaultErrorHandler = func(ctx context.Context, s server.Handler, w http.ResponseWriter, r *http.Request, err error, status int) {
+	DefaultErrorHandler = func(ctx context.Context, s interface{}, w http.ResponseWriter, r *http.Request, err error, status int) {
 		w.WriteHeader(status)
 		if _, cerr := w.Write([]byte(err.Error())); cerr != nil {
-			logger.DefaultLogger.Errorf(ctx, "write failed: %v", cerr)
+			logger.DefaultLogger.Error(ctx, fmt.Sprintf("write failed: %v", cerr))
 		}
 	}
 	DefaultContentType = "application/json"
@@ -35,7 +35,7 @@ type patHandler struct {
 }
 
 type httpHandler struct {
-	opts     server.HandlerOptions
+	opts     server.HandleOptions
 	hd       interface{}
 	handlers *rhttp.Trie
 	name     string
@@ -56,17 +56,287 @@ func (h *httpHandler) Endpoints() []*register.Endpoint {
 	return h.eps
 }
 
-func (h *httpHandler) Options() server.HandlerOptions {
+func (h *httpHandler) Options() server.HandleOptions {
 	return h.opts
 }
 
-func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+func (h *Server) HTTPHandlerFunc(handler interface{}) (http.HandlerFunc, error) {
-	// check for http.HandlerFunc handlers
+	if handler == nil {
-	if ph, _, err := h.pathHandlers.Search(r.Method, r.URL.Path); err == nil {
+		return nil, fmt.Errorf("invalid handler specified: %v", handler)
-		ph.(http.HandlerFunc)(w, r)
-		return
 	}
 
+	rtype := reflect.TypeOf(handler)
+	if rtype.NumIn() != 3 {
+		return nil, fmt.Errorf("invalid handler, NumIn != 3: %v", rtype.NumIn())
+	}
+
+	argType := rtype.In(1)
+	replyType := rtype.In(2)
+
+	// First arg need not be a pointer.
+	if !isExportedOrBuiltinType(argType) {
+		return nil, fmt.Errorf("invalid handler, argument type not exported: %v", argType)
+	}
+
+	if replyType.Kind() != reflect.Ptr {
+		return nil, fmt.Errorf("invalid handler, reply type not a pointer: %v", replyType)
+	}
+
+	// Reply type must be exported.
+	if !isExportedOrBuiltinType(replyType) {
+		return nil, fmt.Errorf("invalid handler, reply type not exported: %v", replyType)
+	}
+
+	if rtype.NumOut() != 1 {
+		return nil, fmt.Errorf("invalid handler, has wrong number of outs: %v", rtype.NumOut())
+	}
+
+	// The return type of the method must be error.
+	if returnType := rtype.Out(0); returnType != typeOfError {
+		return nil, fmt.Errorf("invalid handler, returns %v not error", returnType.String())
+	}
+
+	return func(w http.ResponseWriter, r *http.Request) {
+		ct := DefaultContentType
+		if htype := r.Header.Get(metadata.HeaderContentType); htype != "" {
+			ct = htype
+		}
+
+		ctx := context.WithValue(r.Context(), rspCodeKey{}, &rspCodeVal{})
+		ctx = context.WithValue(ctx, rspHeaderKey{}, &rspHeaderVal{})
+		md, ok := metadata.FromIncomingContext(ctx)
+		if !ok {
+			md = metadata.New(len(r.Header) + 8)
+		}
+		for k, v := range r.Header {
+			md[k] = v[0]
+		}
+		md["RemoteAddr"] = r.RemoteAddr
+		md["Method"] = r.Method
+		md["URL"] = r.URL.String()
+		md["Proto"] = r.Proto
+		md["Content-Length"] = fmt.Sprintf("%d", r.ContentLength)
+		md["Transfer-Encoding"] = r.TransferEncoding[0]
+		md["Host"] = r.Host
+		md["RequestURI"] = r.RequestURI
+		if r.TLS != nil {
+			md["TLS"] = "true"
+			md["TLS-ALPN"] = r.TLS.NegotiatedProtocol
+			md["TLS-ServerName"] = r.TLS.ServerName
+		}
+
+		ctx = metadata.NewIncomingContext(ctx, md)
+
+		path := r.URL.Path
+
+		if r.Body != nil {
+			defer r.Body.Close()
+		}
+
+		matches := make(map[string]interface{})
+		var match bool
+		var hldr *patHandler
+		var handler *httpHandler
+
+		for _, shdlr := range h.handlers {
+			hdlr := shdlr.(*httpHandler)
+			fh, mp, err := hdlr.handlers.Search(r.Method, path)
+			if err == nil {
+				match = true
+				for k, v := range mp {
+					matches[k] = v
+				}
+				hldr = fh.(*patHandler)
+				handler = hdlr
+				break
+			} else if err == rhttp.ErrMethodNotAllowed && !h.registerRPC {
+				w.WriteHeader(http.StatusMethodNotAllowed)
+				_, _ = w.Write([]byte("not matching route found"))
+				return
+			}
+		}
+
+		if !match && h.registerRPC {
+			microMethod, mok := md.Get(metadata.HeaderEndpoint)
+			if mok {
+				serviceMethod := strings.Split(microMethod, ".")
+				if len(serviceMethod) == 2 {
+					if shdlr, ok := h.handlers[serviceMethod[0]]; ok {
+						hdlr := shdlr.(*httpHandler)
+						fh, mp, err := hdlr.handlers.Search(http.MethodPost, "/"+microMethod)
+						if err == nil {
+							match = true
+							for k, v := range mp {
+								matches[k] = v
+							}
+							hldr = fh.(*patHandler)
+							handler = hdlr
+						}
+					}
+				}
+			}
+		}
+
+		// get fields from url values
+		if len(r.URL.RawQuery) > 0 {
+			umd, cerr := rflutil.URLMap(r.URL.RawQuery)
+			if cerr != nil {
+				w.WriteHeader(http.StatusInternalServerError)
+				_, _ = w.Write([]byte(cerr.Error()))
+				return
+			}
+			for k, v := range umd {
+				matches[k] = v
+			}
+		}
+
+		cf, err := h.newCodec(ct)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		var argv, replyv reflect.Value
+
+		// Decode the argument value.
+		argIsValue := false // if true, need to indirect before calling.
+		if hldr.mtype.ArgType.Kind() == reflect.Ptr {
+			argv = reflect.New(hldr.mtype.ArgType.Elem())
+		} else {
+			argv = reflect.New(hldr.mtype.ArgType)
+			argIsValue = true
+		}
+
+		if argIsValue {
+			argv = argv.Elem()
+		}
+
+		// reply value
+		replyv = reflect.New(hldr.mtype.ReplyType.Elem())
+
+		function := hldr.mtype.method.Func
+		var returnValues []reflect.Value
+
+		if r.Body != nil {
+			var buf []byte
+			buf, err = io.ReadAll(r.Body)
+			if err != nil && err != io.EOF {
+				h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
+				return
+			}
+
+			if err = cf.Unmarshal(buf, argv.Interface()); err != nil {
+				h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
+				return
+			}
+		}
+
+		matches = rflutil.FlattenMap(matches)
+		if err = rflutil.Merge(argv.Interface(), matches, rflutil.SliceAppend(true), rflutil.Tags([]string{"protobuf", "json"})); err != nil {
+			h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
+			return
+		}
+
+		hr := &rpcRequest{
+			codec:       cf,
+			service:     handler.sopts.Name,
+			contentType: ct,
+			method:      fmt.Sprintf("%s.%s", hldr.name, hldr.mtype.method.Name),
+			endpoint:    fmt.Sprintf("%s.%s", hldr.name, hldr.mtype.method.Name),
+			payload:     argv.Interface(),
+			header:      md,
+		}
+
+		// define the handler func
+		fn := func(fctx context.Context, req server.Request, rsp interface{}) (err error) {
+			returnValues = function.Call([]reflect.Value{hldr.rcvr, hldr.mtype.prepareContext(fctx), argv, reflect.ValueOf(rsp)})
+
+			// The return value for the method is an error.
+			if rerr := returnValues[0].Interface(); rerr != nil {
+				err = rerr.(error)
+			}
+
+			md, ok := metadata.FromOutgoingContext(ctx)
+			if !ok {
+				md = metadata.New(0)
+			}
+			if nmd, ok := metadata.FromOutgoingContext(fctx); ok {
+				for k, v := range nmd {
+					md[k] = v
+				}
+			}
+
+			return err
+		}
+
+		// wrap the handler func
+		// for i := len(handler.sopts.Hooks); i > 0; i-- {
+		//	fn = handler.sopts.Hooks[i-1](fn)
+		// }
+
+		if ct == "application/x-www-form-urlencoded" {
+			cf, err = h.newCodec(DefaultContentType)
+			if err != nil {
+				h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
+				return
+			}
+			ct = DefaultContentType
+		}
+
+		scode := int(200)
+		appErr := fn(ctx, hr, replyv.Interface())
+
+		w.Header().Set(metadata.HeaderContentType, ct)
+		if md, ok := metadata.FromOutgoingContext(ctx); ok {
+			for k, v := range md {
+				w.Header()[k] = []string{v}
+			}
+		}
+		if md := getRspHeader(ctx); md != nil {
+			for k, v := range md {
+				w.Header()[k] = v
+			}
+		}
+		if nct := w.Header().Get(metadata.HeaderContentType); nct != ct {
+			if cf, err = h.newCodec(nct); err != nil {
+				h.errorHandler(ctx, nil, w, r, err, http.StatusBadRequest)
+				return
+			}
+		}
+
+		var buf []byte
+		if appErr != nil {
+			switch verr := appErr.(type) {
+			case *errors.Error:
+				scode = int(verr.Code)
+				buf, err = cf.Marshal(verr)
+			case *Error:
+				buf, err = cf.Marshal(verr.err)
+			default:
+				buf, err = cf.Marshal(appErr)
+			}
+		} else {
+			buf, err = cf.Marshal(replyv.Interface())
+		}
+
+		if err != nil && handler.sopts.Logger.V(logger.ErrorLevel) {
+			handler.sopts.Logger.Error(handler.sopts.Context, fmt.Sprintf("handler err: %v", err))
+			return
+		}
+
+		if nscode := GetRspCode(ctx); nscode != 0 {
+			scode = nscode
+		}
+		w.WriteHeader(scode)
+
+		if _, cerr := w.Write(buf); cerr != nil {
+			handler.sopts.Logger.Error(ctx, fmt.Sprintf("write failed: %v", cerr))
+		}
+	}, nil
+}
+
+func (h *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	ct := DefaultContentType
 	if htype := r.Header.Get(metadata.HeaderContentType); htype != "" {
 		ct = htype
@@ -79,20 +349,25 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		md = metadata.New(len(r.Header) + 8)
 	}
 	for k, v := range r.Header {
-		md[k] = strings.Join(v, ", ")
+		md[k] = v[0]
 	}
 	md["RemoteAddr"] = r.RemoteAddr
+	if r.TLS != nil {
+		md["Scheme"] = "https"
+	} else {
+		md["Scheme"] = "http"
+	}
 	md["Method"] = r.Method
 	md["URL"] = r.URL.String()
 	md["Proto"] = r.Proto
-	md["ContentLength"] = fmt.Sprintf("%d", r.ContentLength)
+	md["Content-Length"] = fmt.Sprintf("%d", r.ContentLength)
-	md["TransferEncoding"] = strings.Join(r.TransferEncoding, ",")
+	if len(r.TransferEncoding) > 0 {
+		md["Transfer-Encoding"] = r.TransferEncoding[0]
+	}
 	md["Host"] = r.Host
 	md["RequestURI"] = r.RequestURI
 	ctx = metadata.NewIncomingContext(ctx, md)
 
-	defer r.Body.Close()
-
 	path := r.URL.Path
 	if !strings.HasPrefix(path, "/") {
 		h.errorHandler(ctx, nil, w, r, fmt.Errorf("path must starts with /"), http.StatusBadRequest)
@@ -144,11 +419,16 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if !match && h.hd != nil {
-		if hdlr, ok := h.hd.Handler().(http.Handler); ok {
+		if hdlr, ok := h.hd.(http.Handler); ok {
 			hdlr.ServeHTTP(w, r)
 			return
 		}
 	} else if !match {
+		// check for http.HandlerFunc handlers
+		if ph, _, err := h.pathHandlers.Search(r.Method, r.URL.Path); err == nil {
+			ph.(http.HandlerFunc)(w, r)
+			return
+		}
 		h.errorHandler(ctx, nil, w, r, fmt.Errorf("not matching route found"), http.StatusNotFound)
 		return
 	}
@@ -165,6 +445,10 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
+	if r.Body != nil {
+		defer r.Body.Close()
+	}
+
 	cf, err := h.newCodec(ct)
 	if err != nil {
 		h.errorHandler(ctx, nil, w, r, err, http.StatusBadRequest)
@@ -192,21 +476,26 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	function := hldr.mtype.method.Func
 	var returnValues []reflect.Value
 
-	buf, err := io.ReadAll(r.Body)
+	if r.Body != nil {
-	if err != nil && err != io.EOF {
+		var buf []byte
-		h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
+		buf, err = io.ReadAll(r.Body)
-		return
+		if err != nil && err != io.EOF {
+			h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
+			return
+		}
+
+		if err = cf.Unmarshal(buf, argv.Interface()); err != nil {
+			h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
+			return
+		}
 	}
 
-	if err = cf.Unmarshal(buf, argv.Interface()); err != nil {
+	if len(matches) > 0 {
-		h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
+		matches = rflutil.FlattenMap(matches)
-		return
+		if err = rflutil.Merge(argv.Interface(), matches, rflutil.SliceAppend(true), rflutil.Tags([]string{"protobuf", "json"})); err != nil {
-	}
+			h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
-
+			return
-	matches = rflutil.FlattenMap(matches)
+		}
-	if err = rflutil.Merge(argv.Interface(), matches, rflutil.SliceAppend(true), rflutil.Tags([]string{"protobuf", "json"})); err != nil {
-		h.errorHandler(ctx, handler, w, r, err, http.StatusBadRequest)
-		return
 	}
 
 	hr := &rpcRequest{
@@ -234,18 +523,17 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		}
 		if nmd, ok := metadata.FromOutgoingContext(fctx); ok {
 			for k, v := range nmd {
-				md.Set(k, v)
+				md[k] = v
 			}
 		}
-		metadata.SetOutgoingContext(ctx, md)
 
 		return err
 	}
 
 	// wrap the handler func
-	for i := len(handler.sopts.HdlrWrappers); i > 0; i-- {
+	// for i := len(handler.sopts.HdlrWrappers); i > 0; i-- {
-		fn = handler.sopts.HdlrWrappers[i-1](fn)
+	//	fn = handler.sopts.HdlrWrappers[i-1](fn)
-	}
+	// }
 
 	if ct == "application/x-www-form-urlencoded" {
 		cf, err = h.newCodec(DefaultContentType)
@@ -262,7 +550,7 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set(metadata.HeaderContentType, ct)
 	if md, ok := metadata.FromOutgoingContext(ctx); ok {
 		for k, v := range md {
-			w.Header().Set(k, v)
+			w.Header()[k] = []string{v}
 		}
 	}
 	if md := getRspHeader(ctx); md != nil {
@@ -279,6 +567,7 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
+	var buf []byte
 	if appErr != nil {
 		switch verr := appErr.(type) {
 		case *errors.Error:
@@ -294,7 +583,7 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if err != nil && handler.sopts.Logger.V(logger.ErrorLevel) {
-		handler.sopts.Logger.Errorf(handler.sopts.Context, "handler err: %v", err)
+		handler.sopts.Logger.Error(handler.sopts.Context, fmt.Sprintf("handler err: %v", err))
 		return
 	}
 
@@ -304,6 +593,6 @@ func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(scode)
 
 	if _, cerr := w.Write(buf); cerr != nil {
-		handler.sopts.Logger.Errorf(ctx, "write failed: %v", cerr)
+		handler.sopts.Logger.Error(ctx, fmt.Sprintf("write failed: %v", cerr))
 	}
 }

handler/generate.go

@@ -0,0 +1,12 @@
+package handler
+
+import (
+	// import required packages
+	_ "go.unistack.org/micro-proto/v4/openapiv3"
+)
+
+//go:generate sh -c "curl -L https://github.com/swagger-api/swagger-ui/archive/refs/tags/v4.18.3.zip -o - | bsdtar -C swagger-ui --strip-components=2 -xv swagger-ui-4.18.3/dist && rm swagger-ui/*.map swagger-ui/*-es-*.js swagger-ui/swagger-ui.js swagger-ui/swagger-initializer.js"
+
+//go:generate sh -c "protoc -I./ -I$(go list -f '{{ .Dir }}' -m go.unistack.org/micro-proto/v4) --go-micro_out='components=micro|http|server',standalone=false,debug=true,paths=source_relative:./ ./meter/meter.proto"
+
+//go:generate sh -c "protoc -I./ -I$(go list -f '{{ .Dir }}' -m go.unistack.org/micro-proto/v4) --go-micro_out='components=micro|http|server',standalone=false,debug=true,paths=source_relative:./ ./health/health.proto"

handler/health/generate.go

@@ -1,8 +0,0 @@
-package health
-
-//go:generate sh -c "protoc -I./ -I$(go list -f '{{ .Dir }}' -m go.unistack.org/micro-proto/v3) --go-micro_out='components=micro|http|server',standalone=false,debug=true,paths=source_relative:./ health.proto"
-
-import (
-	// import required packages
-	_ "go.unistack.org/micro-proto/v3/openapiv3"
-)

handler/health/health.go

@@ -1,13 +1,13 @@
-package health // import "go.unistack.org/micro-server-http/v3/handler/health"
+package health // import "go.unistack.org/micro-server-http/v4/handler/health"
 
 import (
 	"context"
 
-	codecpb "go.unistack.org/micro-proto/v3/codec"
+	codecpb "go.unistack.org/micro-proto/v4/codec"
-	"go.unistack.org/micro/v3/errors"
+	"go.unistack.org/micro/v4/errors"
 )
 
-var _ HealthServiceServer = &Handler{}
+var _ HealthServiceServer = (*Handler)(nil)
 
 type Handler struct {
 	opts Options

handler/health/health.proto

@@ -1,7 +1,7 @@
 syntax = "proto3";
 
-package micro.server.http.v3.handler.health;
+package micro.server.http.v4.handler.health;
-option go_package = "go.unistack.org/micro-server-http/v3/handler/health;health";
+option go_package = "go.unistack.org/micro-server-http/v4/handler/health;health";
 
 import "api/annotations.proto";
 import "openapiv3/annotations.proto";

handler/health/health_micro.pb.go

@@ -1,45 +1,19 @@
 // Code generated by protoc-gen-go-micro. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-micro v3.10.2
+// - protoc-gen-go-micro v4.0.2
-// - protoc              v3.21.12
+// - protoc              v4.23.4
-// source: health.proto
+// source: health/health.proto
 
 package health
 
 import (
 	context "context"
-	codec "go.unistack.org/micro-proto/v3/codec"
+	codec "go.unistack.org/micro-proto/v4/codec"
-	v3 "go.unistack.org/micro-server-http/v3"
 )
 
 var (
 	HealthServiceName = "HealthService"
 )
-var (
-	HealthServiceServerEndpoints = []v3.EndpointMetadata{
-		{
-			Name:   "HealthService.Live",
-			Path:   "/live",
-			Method: "GET",
-			Body:   "",
-			Stream: false,
-		},
-		{
-			Name:   "HealthService.Ready",
-			Path:   "/ready",
-			Method: "GET",
-			Body:   "",
-			Stream: false,
-		},
-		{
-			Name:   "HealthService.Version",
-			Path:   "/version",
-			Method: "GET",
-			Body:   "",
-			Stream: false,
-		},
-	}
-)
 
 type HealthServiceServer interface {
 	Live(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error

handler/health/health_micro_http.pb.go

@@ -1,14 +1,41 @@
 // Code generated by protoc-gen-go-micro. DO NOT EDIT.
-// protoc-gen-go-micro version: v3.10.2
+// protoc-gen-go-micro version: v4.0.2
-// source: health.proto
+// source: health/health.proto
 
 package health
 
 import (
 	context "context"
-	codec "go.unistack.org/micro-proto/v3/codec"
+	codec "go.unistack.org/micro-proto/v4/codec"
-	v3 "go.unistack.org/micro-server-http/v3"
+	v4 "go.unistack.org/micro-server-http/v4"
-	server "go.unistack.org/micro/v3/server"
+	options "go.unistack.org/micro/v4/options"
+	server "go.unistack.org/micro/v4/server"
+)
+
+var (
+	HealthServiceServerEndpoints = []v4.EndpointMetadata{
+		{
+			Name:   "HealthService.Live",
+			Path:   "/live",
+			Method: "GET",
+			Body:   "",
+			Stream: false,
+		},
+		{
+			Name:   "HealthService.Ready",
+			Path:   "/ready",
+			Method: "GET",
+			Body:   "",
+			Stream: false,
+		},
+		{
+			Name:   "HealthService.Version",
+			Path:   "/version",
+			Method: "GET",
+			Body:   "",
+			Stream: false,
+		},
+	}
 )
 
 type healthServiceServer struct {
@@ -27,7 +54,7 @@ func (h *healthServiceServer) Version(ctx context.Context, req *codec.Frame, rsp
 	return h.HealthServiceServer.Version(ctx, req, rsp)
 }
 
-func RegisterHealthServiceServer(s server.Server, sh HealthServiceServer, opts ...server.HandlerOption) error {
+func RegisterHealthServiceServer(s server.Server, sh HealthServiceServer, opts ...options.Option) error {
 	type healthService interface {
 		Live(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
 		Ready(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
@@ -37,7 +64,7 @@ func RegisterHealthServiceServer(s server.Server, sh HealthServiceServer, opts .
 		healthService
 	}
 	h := &healthServiceServer{sh}
-	var nopts []server.HandlerOption
+	var nopts []options.Option
-	nopts = append(nopts, v3.HandlerEndpoints(HealthServiceServerEndpoints))
+	nopts = append(nopts, v4.HandlerEndpoints(HealthServiceServerEndpoints))
-	return s.Handle(s.NewHandler(&HealthService{h}, append(nopts, opts...)...))
+	return s.Handle(&HealthService{h}, append(nopts, opts...)...)
 }

handler/meter/generate.go

@@ -1,8 +0,0 @@
-package meter
-
-//go:generate sh -c "protoc -I./ -I$(go list -f '{{ .Dir }}' -m go.unistack.org/micro-proto/v3) --go-micro_out='components=micro|http|server',standalone=false,debug=true,paths=source_relative:./ meter.proto"
-
-import (
-	// import required packages
-	_ "go.unistack.org/micro-proto/v3/openapiv3"
-)

handler/meter/meter.go

@@ -1,16 +1,39 @@
-package meter // import "go.unistack.org/micro-server-http/v3/handler/meter"
+package meter // import "go.unistack.org/micro-server-http/v4/handler/meter"
 
 import (
 	"bytes"
+	"compress/gzip"
 	"context"
+	"io"
+	"strings"
+	"sync"
 
-	codecpb "go.unistack.org/micro-proto/v3/codec"
+	codecpb "go.unistack.org/micro-proto/v4/codec"
-	"go.unistack.org/micro/v3/errors"
+	"go.unistack.org/micro/v4/logger"
-	"go.unistack.org/micro/v3/meter"
+	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v4/meter"
+	"go.unistack.org/micro/v4/options"
 )
 
+const (
+	contentEncodingHeader = "Content-Encoding"
+	acceptEncodingHeader  = "Accept-Encoding"
+)
+
+var gzipPool = sync.Pool{
+	New: func() interface{} {
+		return gzip.NewWriter(nil)
+	},
+}
+
+var bufPool = sync.Pool{
+	New: func() interface{} {
+		return bytes.NewBuffer(nil)
+	},
+}
+
 // guard to fail early
-var _ MeterServiceServer = &Handler{}
+var _ MeterServiceServer = (*Handler)(nil)
 
 type Handler struct {
 	opts Options
@@ -19,9 +42,10 @@ type Handler struct {
 type Option func(*Options)
 
 type Options struct {
-	Meter        meter.Meter
+	Meter           meter.Meter
-	Name         string
+	Name            string
-	MeterOptions []meter.Option
+	MeterOptions    []options.Option
+	DisableCompress bool
 }
 
 func Meter(m meter.Meter) Option {
@@ -36,14 +60,20 @@ func Name(name string) Option {
 	}
 }
 
-func MeterOptions(opts ...meter.Option) Option {
+func DisableCompress(g bool) Option {
+	return func(o *Options) {
+		o.DisableCompress = g
+	}
+}
+
+func MeterOptions(opts ...options.Option) Option {
 	return func(o *Options) {
 		o.MeterOptions = append(o.MeterOptions, opts...)
 	}
 }
 
 func NewOptions(opts ...Option) Options {
-	options := Options{Meter: meter.DefaultMeter}
+	options := Options{Meter: meter.DefaultMeter, DisableCompress: false}
 	for _, o := range opts {
 		o(&options)
 	}
@@ -56,12 +86,48 @@ func NewHandler(opts ...Option) *Handler {
 }
 
 func (h *Handler) Metrics(ctx context.Context, req *codecpb.Frame, rsp *codecpb.Frame) error {
-	buf := bytes.NewBuffer(nil)
+	log, ok := logger.FromContext(ctx)
-	if err := h.opts.Meter.Write(buf, h.opts.MeterOptions...); err != nil {
+	if !ok {
-		return errors.InternalServerError(h.opts.Name, "%v", err)
+		log = logger.DefaultLogger
+	}
+
+	buf := bufPool.Get().(*bytes.Buffer)
+	defer bufPool.Put(buf)
+	buf.Reset()
+
+	w := io.Writer(buf)
+
+	if md, ok := metadata.FromIncomingContext(ctx); gzipAccepted(md) && ok && !h.opts.DisableCompress {
+		omd, _ := metadata.FromOutgoingContext(ctx)
+		omd.Set(contentEncodingHeader, "gzip")
+		gz := gzipPool.Get().(*gzip.Writer)
+		defer gzipPool.Put(gz)
+
+		gz.Reset(w)
+		defer gz.Close()
+
+		w = gz
+		gz.Flush()
+	}
+
+	if err := h.opts.Meter.Write(w, h.opts.MeterOptions...); err != nil {
+		log.Error(ctx, "http/meter: write failed", err)
+		return nil
 	}
 
 	rsp.Data = buf.Bytes()
 
 	return nil
 }
+
+// gzipAccepted returns whether the client will accept gzip-encoded content.
+func gzipAccepted(md metadata.Metadata) bool {
+	a, ok := md.Get(acceptEncodingHeader)
+	if !ok {
+		return false
+	}
+	if strings.Contains(a, "gzip") {
+		return true
+	}
+	return false
+}

handler/meter/meter.proto

@@ -1,7 +1,7 @@
 syntax = "proto3";
 
-package micro.server.http.v3.handler.meter;
+package micro.server.http.v4.handler.meter;
-option go_package = "go.unistack.org/micro-server-http/v3/handler/meter;meter";
+option go_package = "go.unistack.org/micro-server-http/v4/handler/meter;meter";
 
 import "api/annotations.proto";
 import "openapiv3/annotations.proto";

handler/meter/meter_micro.pb.go

@@ -1,31 +1,19 @@
 // Code generated by protoc-gen-go-micro. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-micro v3.10.2
+// - protoc-gen-go-micro v4.0.2
-// - protoc              v3.21.12
+// - protoc              v4.23.4
-// source: meter.proto
+// source: meter/meter.proto
 
 package meter
 
 import (
 	context "context"
-	codec "go.unistack.org/micro-proto/v3/codec"
+	codec "go.unistack.org/micro-proto/v4/codec"
-	v3 "go.unistack.org/micro-server-http/v3"
 )
 
 var (
 	MeterServiceName = "MeterService"
 )
-var (
-	MeterServiceServerEndpoints = []v3.EndpointMetadata{
-		{
-			Name:   "MeterService.Metrics",
-			Path:   "/metrics",
-			Method: "GET",
-			Body:   "",
-			Stream: false,
-		},
-	}
-)
 
 type MeterServiceServer interface {
 	Metrics(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error

handler/meter/meter_micro_http.pb.go

@@ -1,14 +1,27 @@
 // Code generated by protoc-gen-go-micro. DO NOT EDIT.
-// protoc-gen-go-micro version: v3.10.2
+// protoc-gen-go-micro version: v4.0.2
-// source: meter.proto
+// source: meter/meter.proto
 
 package meter
 
 import (
 	context "context"
-	codec "go.unistack.org/micro-proto/v3/codec"
+	codec "go.unistack.org/micro-proto/v4/codec"
-	v3 "go.unistack.org/micro-server-http/v3"
+	v4 "go.unistack.org/micro-server-http/v4"
-	server "go.unistack.org/micro/v3/server"
+	options "go.unistack.org/micro/v4/options"
+	server "go.unistack.org/micro/v4/server"
+)
+
+var (
+	MeterServiceServerEndpoints = []v4.EndpointMetadata{
+		{
+			Name:   "MeterService.Metrics",
+			Path:   "/metrics",
+			Method: "GET",
+			Body:   "",
+			Stream: false,
+		},
+	}
 )
 
 type meterServiceServer struct {
@@ -19,7 +32,7 @@ func (h *meterServiceServer) Metrics(ctx context.Context, req *codec.Frame, rsp
 	return h.MeterServiceServer.Metrics(ctx, req, rsp)
 }
 
-func RegisterMeterServiceServer(s server.Server, sh MeterServiceServer, opts ...server.HandlerOption) error {
+func RegisterMeterServiceServer(s server.Server, sh MeterServiceServer, opts ...options.Option) error {
 	type meterService interface {
 		Metrics(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error
 	}
@@ -27,7 +40,7 @@ func RegisterMeterServiceServer(s server.Server, sh MeterServiceServer, opts ...
 		meterService
 	}
 	h := &meterServiceServer{sh}
-	var nopts []server.HandlerOption
+	var nopts []options.Option
-	nopts = append(nopts, v3.HandlerEndpoints(MeterServiceServerEndpoints))
+	nopts = append(nopts, v4.HandlerEndpoints(MeterServiceServerEndpoints))
-	return s.Handle(s.NewHandler(&MeterService{h}, append(nopts, opts...)...))
+	return s.Handle(&MeterService{h}, append(nopts, opts...)...)
 }

handler/meter/meter_test.go

@@ -0,0 +1,49 @@
+package meter
+
+import (
+	"context"
+	"testing"
+
+	codecpb "go.unistack.org/micro-proto/v4/codec"
+)
+
+func TestHandler_Metrics(t *testing.T) {
+	type fields struct {
+		opts Options
+	}
+	type args struct {
+		ctx context.Context
+		req *codecpb.Frame
+		rsp *codecpb.Frame
+	}
+	tests := []struct {
+		name    string
+		fields  fields
+		args    args
+		wantErr bool
+	}{
+		{
+			"Test #1",
+			fields{
+				opts: NewOptions(),
+			},
+			args{
+				context.Background(),
+				&codecpb.Frame{Data: []byte("gzip")},
+				&codecpb.Frame{},
+			},
+			true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			h := &Handler{
+				opts: tt.fields.opts,
+			}
+			if err := h.Metrics(tt.args.ctx, tt.args.req, tt.args.rsp); (err != nil) != tt.wantErr {
+				t.Errorf("Metrics() error = %v, wantErr %v", err, tt.wantErr)
+			}
+			t.Logf("RSP: %v", tt.args.rsp.Data)
+		})
+	}
+}

handler/spa/spa.go

@@ -0,0 +1,19 @@
+package spa
+
+import (
+	"io/fs"
+	"net/http"
+	"strings"
+)
+
+// Handler serve files from dir and redirect to index if file not exists
+var Handler = func(prefix string, dir fs.FS) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		f := http.StripPrefix(prefix, http.FileServer(http.FS(dir)))
+		if _, err := fs.Stat(dir, strings.TrimPrefix(r.RequestURI, prefix)); err != nil {
+			r.RequestURI = prefix
+			r.URL.Path = prefix
+		}
+		f.ServeHTTP(w, r)
+	}
+}

handler/swagger-ui/index.css

@@ -0,0 +1,16 @@
+html {
+    box-sizing: border-box;
+    overflow: -moz-scrollbars-vertical;
+    overflow-y: scroll;
+}
+
+*,
+*:before,
+*:after {
+    box-sizing: inherit;
+}
+
+body {
+    margin: 0;
+    background: #fafafa;
+}

handler/swagger-ui/index.html

@@ -0,0 +1,19 @@
+<!-- HTML for static distribution bundle build -->
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8">
+    <title>Swagger UI</title>
+    <link rel="stylesheet" type="text/css" href="./swagger-ui.css" />
+    <link rel="stylesheet" type="text/css" href="index.css" />
+    <link rel="icon" type="image/png" href="./favicon-32x32.png" sizes="32x32" />
+    <link rel="icon" type="image/png" href="./favicon-16x16.png" sizes="16x16" />
+  </head>
+
+  <body>
+    <div id="swagger-ui"></div>
+    <script src="./swagger-ui-bundle.js" charset="UTF-8"> </script>
+    <script src="./swagger-ui-standalone-preset.js" charset="UTF-8"> </script>
+    <script src="./swagger-initializer.js" charset="UTF-8"> </script>
+  </body>
+</html>

handler/swagger-ui/oauth2-redirect.html

@@ -0,0 +1,79 @@
+<!doctype html>
+<html lang="en-US">
+<head>
+    <title>Swagger UI: OAuth2 Redirect</title>
+</head>
+<body>
+<script>
+    'use strict';
+    function run () {
+        var oauth2 = window.opener.swaggerUIRedirectOauth2;
+        var sentState = oauth2.state;
+        var redirectUrl = oauth2.redirectUrl;
+        var isValid, qp, arr;
+
+        if (/code|token|error/.test(window.location.hash)) {
+            qp = window.location.hash.substring(1).replace('?', '&');
+        } else {
+            qp = location.search.substring(1);
+        }
+
+        arr = qp.split("&");
+        arr.forEach(function (v,i,_arr) { _arr[i] = '"' + v.replace('=', '":"') + '"';});
+        qp = qp ? JSON.parse('{' + arr.join() + '}',
+                function (key, value) {
+                    return key === "" ? value : decodeURIComponent(value);
+                }
+        ) : {};
+
+        isValid = qp.state === sentState;
+
+        if ((
+          oauth2.auth.schema.get("flow") === "accessCode" ||
+          oauth2.auth.schema.get("flow") === "authorizationCode" ||
+          oauth2.auth.schema.get("flow") === "authorization_code"
+        ) && !oauth2.auth.code) {
+            if (!isValid) {
+                oauth2.errCb({
+                    authId: oauth2.auth.name,
+                    source: "auth",
+                    level: "warning",
+                    message: "Authorization may be unsafe, passed state was changed in server. The passed state wasn't returned from auth server."
+                });
+            }
+
+            if (qp.code) {
+                delete oauth2.state;
+                oauth2.auth.code = qp.code;
+                oauth2.callback({auth: oauth2.auth, redirectUrl: redirectUrl});
+            } else {
+                let oauthErrorMsg;
+                if (qp.error) {
+                    oauthErrorMsg = "["+qp.error+"]: " +
+                        (qp.error_description ? qp.error_description+ ". " : "no accessCode received from the server. ") +
+                        (qp.error_uri ? "More info: "+qp.error_uri : "");
+                }
+
+                oauth2.errCb({
+                    authId: oauth2.auth.name,
+                    source: "auth",
+                    level: "error",
+                    message: oauthErrorMsg || "[Authorization failed]: no accessCode received from the server."
+                });
+            }
+        } else {
+            oauth2.callback({auth: oauth2.auth, token: qp, isValid: isValid, redirectUrl: redirectUrl});
+        }
+        window.close();
+    }
+
+    if (document.readyState !== 'loading') {
+        run();
+    } else {
+        document.addEventListener('DOMContentLoaded', function () {
+            run();
+        });
+    }
+</script>
+</body>
+</html>

handler/swagger-ui/swaggerui.go

@@ -0,0 +1,142 @@
+package swaggerui // import "go.unistack.org/micro-server-http/v4/handler/swagger-ui"
+
+import (
+	"embed"
+	"html/template"
+	"net/http"
+	"path"
+	"reflect"
+)
+
+//go:embed *.js *.css *.html *.png
+var assets embed.FS
+
+var (
+	Handler = func(prefix string) http.HandlerFunc {
+		return func(w http.ResponseWriter, r *http.Request) {
+			if r.Method != http.MethodGet || path.Base(r.URL.Path) != "swagger-initializer.js" {
+				http.StripPrefix(prefix, http.FileServer(http.FS(assets))).ServeHTTP(w, r)
+				return
+			}
+			tpl := template.New("swagger-initializer.js").Funcs(TemplateFuncs)
+			ptpl, err := tpl.Parse(Template)
+			if err != nil {
+				w.WriteHeader(http.StatusInternalServerError)
+				_, _ = w.Write([]byte(err.Error()))
+				return
+			}
+			if err := ptpl.Execute(w, Config); err != nil {
+				w.WriteHeader(http.StatusInternalServerError)
+				_, _ = w.Write([]byte(err.Error()))
+				return
+			}
+		}
+	}
+	TemplateFuncs = template.FuncMap{
+		"isInt": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.Int, reflect.Int8, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64:
+				return true
+			default:
+				return false
+			}
+		},
+		"isBool": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.Bool:
+				return true
+			default:
+				return false
+			}
+		},
+		"isString": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.String:
+				return true
+			default:
+				return false
+			}
+		},
+		"isSlice": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.Slice:
+				return true
+			default:
+				return false
+			}
+		},
+		"isMap": func(i interface{}) bool {
+			v := reflect.ValueOf(i)
+			switch v.Kind() {
+			case reflect.Map:
+				return true
+			default:
+				return false
+			}
+		},
+	}
+	Template = `
+	window.onload = function() {
+		//<editor-fold desc="Changeable Configuration Block">
+	
+		window.ui = SwaggerUIBundle({
+			{{- range $k, $v := . }}
+			{{- if (eq (printf "%s" $v) "") -}}
+			{{- continue -}}
+			{{ end }}
+			{{ $k }}: {{ if isBool $v -}}
+			{{- $v -}},
+			{{- else if isInt $v -}}
+      {{- $v -}},
+			{{- else if isString $v -}}
+			"{{- $v -}}",
+			{{- else if and (isSlice $v) (or (eq (printf "%s" $k) "presets") (eq (printf "%s" $k) "plugins")) -}}
+			[
+			{{- range $v }}
+				{{ . }},
+			{{- end }}
+			],
+			{{- end -}} 
+			{{ end }}
+		});
+	
+		//</editor-fold>
+	};`
+	Config = map[string]interface{}{
+		"configUrl": "",
+		"dom_id":    "#swagger-ui",
+		/*
+				"domNode":     "",
+			  "spec":        "",
+				"urls": []interface{}{
+					map[string]interface{}{
+							"url":  "",
+							"name": "",
+						},
+					},
+				},
+		*/
+		"url":                      "https://petstore.swagger.io/v2/swagger.json",
+		"deepLinking":              true,
+		"displayOperationId":       false,
+		"defaultModelsExpandDepth": 1,
+		"defaultModelExpandDepth":  1,
+		"displayRequestDuration":   true,
+		"filter":                   true,
+		"operationsSorter":         "alpha",
+		"showExtensions":           true,
+		"tryItOutEnabled":          true,
+		"presets": []string{
+			"SwaggerUIBundle.presets.apis",
+			"SwaggerUIStandalonePreset",
+		},
+		"plugins": []string{
+			"SwaggerUIBundle.plugins.DownloadUrl",
+		},
+		"layout": "StandaloneLayout",
+	}
+)

handler/swagger-ui/swaggerui_test.go

@@ -0,0 +1,15 @@
+package swaggerui
+
+import (
+	"net/http"
+	"testing"
+)
+
+func TestTemplate(t *testing.T) {
+	t.Skip()
+	h := http.NewServeMux()
+	h.HandleFunc("/", Handler(""))
+	if err := http.ListenAndServe(":8080", h); err != nil {
+		t.Fatal(err)
+	}
+}

handler/swagger/swagger.go

@@ -0,0 +1,61 @@
+package swagger
+
+import (
+	"io/fs"
+	"net/http"
+
+	yamlcodec "go.unistack.org/micro-codec-yaml/v4"
+	rutil "go.unistack.org/micro/v4/util/reflect"
+)
+
+// Handler append to generated swagger data from dst map[string]interface{}
+var Handler = func(dst map[string]interface{}, fsys fs.FS) http.HandlerFunc {
+	c := yamlcodec.NewCodec()
+	return func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodGet {
+			w.WriteHeader(http.StatusNotFound)
+			return
+		}
+
+		path := r.URL.Path
+		if len(path) > 1 && path[0] == '/' {
+			path = path[1:]
+		}
+
+		buf, err := fs.ReadFile(fsys, path)
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		if dst == nil {
+			w.WriteHeader(http.StatusOK)
+			_, _ = w.Write(buf)
+			return
+		}
+
+		var src interface{}
+
+		if err = c.Unmarshal(buf, src); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		if err = rutil.Merge(src, dst); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		if buf, err = c.Marshal(src); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(err.Error()))
+			return
+		}
+
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write(buf)
+	}
+}

http.go

@@ -1,5 +1,5 @@
 // Package http implements a go-micro.Server
-package http // import "go.unistack.org/micro-server-http/v3"
+package http // import "go.unistack.org/micro-server-http/v4"
 
 import (
 	"context"
@@ -9,29 +9,27 @@ import (
 	"net"
 	"net/http"
 	"reflect"
-	"sort"
 	"strings"
 	"sync"
 	"time"
 
-	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v4/codec"
-	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v4/logger"
-	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v4/options"
-	"go.unistack.org/micro/v3/register"
+	"go.unistack.org/micro/v4/register"
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
-	rhttp "go.unistack.org/micro/v3/util/http"
+	rhttp "go.unistack.org/micro/v4/util/http"
 	"golang.org/x/net/netutil"
 )
 
-var _ server.Server = &httpServer{}
+var _ server.Server = (*Server)(nil)
 
-type httpServer struct {
+type Server struct {
-	hd           server.Handler
+	hd           interface{}
 	rsvc         *register.Service
-	handlers     map[string]server.Handler
+	handlers     map[string]interface{}
 	exit         chan chan error
-	subscribers  map[*httpSubscriber][]broker.Subscriber
+	errorHandler func(context.Context, interface{}, http.ResponseWriter, *http.Request, error, int)
-	errorHandler func(context.Context, server.Handler, http.ResponseWriter, *http.Request, error, int)
 	pathHandlers *rhttp.Trie
 	opts         server.Options
 	registerRPC  bool
@@ -40,7 +38,7 @@ type httpServer struct {
 	init       bool
 }
 
-func (h *httpServer) newCodec(ct string) (codec.Codec, error) {
+func (h *Server) newCodec(ct string) (codec.Codec, error) {
 	if idx := strings.IndexRune(ct, ';'); idx >= 0 {
 		ct = ct[:idx]
 	}
@@ -53,14 +51,14 @@ func (h *httpServer) newCodec(ct string) (codec.Codec, error) {
 	return nil, codec.ErrUnknownContentType
 }
 
-func (h *httpServer) Options() server.Options {
+func (h *Server) Options() server.Options {
 	h.Lock()
 	opts := h.opts
 	h.Unlock()
 	return opts
 }
 
-func (h *httpServer) Init(opts ...server.Option) error {
+func (h *Server) Init(opts ...options.Option) error {
 	if len(opts) == 0 && h.init {
 		return nil
 	}
@@ -70,11 +68,11 @@ func (h *httpServer) Init(opts ...server.Option) error {
 	for _, o := range opts {
 		o(&h.opts)
 	}
-	if fn, ok := h.opts.Context.Value(errorHandlerKey{}).(func(ctx context.Context, s server.Handler, w http.ResponseWriter, r *http.Request, err error, status int)); ok && fn != nil {
+	if fn, ok := h.opts.Context.Value(errorHandlerKey{}).(func(ctx context.Context, s interface{}, w http.ResponseWriter, r *http.Request, err error, status int)); ok && fn != nil {
 		h.errorHandler = fn
 	}
 	if h.handlers == nil {
-		h.handlers = make(map[string]server.Handler)
+		h.handlers = make(map[string]interface{})
 	}
 	if h.pathHandlers == nil {
 		h.pathHandlers = rhttp.NewTrie()
@@ -101,10 +99,6 @@ func (h *httpServer) Init(opts ...server.Option) error {
 		h.RUnlock()
 		return err
 	}
-	if err := h.opts.Broker.Init(); err != nil {
-		h.RUnlock()
-		return err
-	}
 	if err := h.opts.Tracer.Init(); err != nil {
 		h.RUnlock()
 		return err
@@ -117,10 +111,6 @@ func (h *httpServer) Init(opts ...server.Option) error {
 		h.RUnlock()
 		return err
 	}
-	if err := h.opts.Transport.Init(); err != nil {
-		h.RUnlock()
-		return err
-	}
 	h.RUnlock()
 
 	h.Lock()
@@ -130,12 +120,24 @@ func (h *httpServer) Init(opts ...server.Option) error {
 	return nil
 }
 
-func (h *httpServer) Handle(handler server.Handler) error {
+func (h *Server) Handle(handler interface{}, opts ...options.Option) error {
+	options := server.NewHandleOptions(opts...)
+	var endpointMetadata []EndpointMetadata
+
+	if v, ok := options.Context.Value(handlerEndpointsKey{}).([]EndpointMetadata); ok {
+		endpointMetadata = v
+	}
+
 	// passed unknown handler
 	hdlr, ok := handler.(*httpHandler)
 	if !ok {
 		h.Lock()
-		h.hd = handler
+		if h.handlers == nil {
+			h.handlers = make(map[string]interface{})
+		}
+		for _, v := range endpointMetadata {
+			h.handlers[v.Name] = h.newHTTPHandler(handler, opts...)
+		}
 		h.Unlock()
 		return nil
 	}
@@ -148,19 +150,11 @@ func (h *httpServer) Handle(handler server.Handler) error {
 		return nil
 	}
 
-	// passed micro compat handler
-	h.Lock()
-	if h.handlers == nil {
-		h.handlers = make(map[string]server.Handler)
-	}
-	h.handlers[handler.Name()] = handler
-	h.Unlock()
-
 	return nil
 }
 
-func (h *httpServer) NewHandler(handler interface{}, opts ...server.HandlerOption) server.Handler {
+func (h *Server) newHTTPHandler(handler interface{}, opts ...options.Option) *httpHandler {
-	options := server.NewHandlerOptions(opts...)
+	options := server.NewHandleOptions(opts...)
 
 	eps := make([]*register.Endpoint, 0, len(options.Metadata))
 	for name, metadata := range options.Metadata {
@@ -204,16 +198,16 @@ func (h *httpServer) NewHandler(handler interface{}, opts ...server.HandlerOptio
 		}
 
 		if method.Name == "" && h.opts.Logger.V(logger.ErrorLevel) {
-			h.opts.Logger.Errorf(h.opts.Context, "nil method for %s", mname)
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("nil method for %s", mname))
 			continue
 		}
 
 		mtype, err := prepareEndpoint(method)
 		if err != nil && h.opts.Logger.V(logger.ErrorLevel) {
-			h.opts.Logger.Errorf(h.opts.Context, "%v", err)
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("%v", err))
 			continue
 		} else if mtype == nil {
-			h.opts.Logger.Errorf(h.opts.Context, "nil mtype for %s", mname)
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("nil mtype for %s", mname))
 			continue
 		}
 
@@ -224,13 +218,13 @@ func (h *httpServer) NewHandler(handler interface{}, opts ...server.HandlerOptio
 		hdlr.name = name
 
 		if err := hdlr.handlers.Insert([]string{md["Method"]}, md["Path"], pth); err != nil {
-			h.opts.Logger.Errorf(h.opts.Context, "cant add handler for %s %s", md["Method"], md["Path"])
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add handler for %s %s", md["Method"][0], md["Path"][0]))
 		}
 
 		if h.registerRPC {
-			h.opts.Logger.Infof(h.opts.Context, "register rpc handler for http.MethodPost %s /%s", hn, hn)
+			h.opts.Logger.Info(h.opts.Context, fmt.Sprintf("register rpc handler for http.MethodPost %s /%s", hn, hn))
 			if err := hdlr.handlers.Insert([]string{http.MethodPost}, "/"+hn, pth); err != nil {
-				h.opts.Logger.Errorf(h.opts.Context, "cant add rpc handler for http.MethodPost %s /%s", hn, hn)
+				h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add rpc handler for http.MethodPost %s /%s", hn, hn))
 			}
 		}
 	}
@@ -254,16 +248,16 @@ func (h *httpServer) NewHandler(handler interface{}, opts ...server.HandlerOptio
 		}
 
 		if method.Name == "" && h.opts.Logger.V(logger.ErrorLevel) {
-			h.opts.Logger.Errorf(h.opts.Context, "nil method for %s", mname)
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("nil method for %s", mname))
 			continue
 		}
 
 		mtype, err := prepareEndpoint(method)
 		if err != nil && h.opts.Logger.V(logger.ErrorLevel) {
-			h.opts.Logger.Errorf(h.opts.Context, "%v", err)
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("%v", err))
 			continue
 		} else if mtype == nil {
-			h.opts.Logger.Errorf(h.opts.Context, "nil mtype for %s", mname)
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("nil mtype for %s", mname))
 			continue
 		}
 
@@ -274,13 +268,13 @@ func (h *httpServer) NewHandler(handler interface{}, opts ...server.HandlerOptio
 		hdlr.name = name
 
 		if err := hdlr.handlers.Insert([]string{md.Method}, md.Path, pth); err != nil {
-			h.opts.Logger.Errorf(h.opts.Context, "cant add handler for %s %s", md.Method, md.Path)
+			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add handler for %s %s", md.Method, md.Path))
 		}
 
 		if h.registerRPC {
-			h.opts.Logger.Infof(h.opts.Context, "register rpc handler for http.MethodPost %s /%s", hn, hn)
+			h.opts.Logger.Info(h.opts.Context, fmt.Sprintf("register rpc handler for http.MethodPost %s /%s", hn, hn))
 			if err := hdlr.handlers.Insert([]string{http.MethodPost}, "/"+hn, pth); err != nil {
-				h.opts.Logger.Errorf(h.opts.Context, "cant add rpc handler for http.MethodPost %s /%s", hn, hn)
+				h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add rpc handler for http.MethodPost %s /%s", hn, hn))
 			}
 		}
 	}
@@ -288,40 +282,15 @@ func (h *httpServer) NewHandler(handler interface{}, opts ...server.HandlerOptio
 	return hdlr
 }
 
-func (h *httpServer) NewSubscriber(topic string, handler interface{}, opts ...server.SubscriberOption) server.Subscriber {
+func (h *Server) Register() error {
-	return newSubscriber(topic, handler, opts...)
-}
-
-func (h *httpServer) Subscribe(sb server.Subscriber) error {
-	sub, ok := sb.(*httpSubscriber)
-	if !ok {
-		return fmt.Errorf("invalid subscriber: expected *httpSubscriber")
-	}
-	if len(sub.handlers) == 0 {
-		return fmt.Errorf("invalid subscriber: no handler functions")
-	}
-
-	if err := server.ValidateSubscriber(sb); err != nil {
-		return err
-	}
-
-	h.RLock()
-	_, ok = h.subscribers[sub]
-	h.RUnlock()
-	if ok {
-		return fmt.Errorf("subscriber %v already exists", h)
-	}
-	h.Lock()
-	h.subscribers[sub] = nil
-	h.Unlock()
-	return nil
-}
-
-func (h *httpServer) Register() error {
 	var eps []*register.Endpoint
 	h.RLock()
 	for _, hdlr := range h.handlers {
-		eps = append(eps, hdlr.Endpoints()...)
+		hd, ok := hdlr.(*httpHandler)
+		if !ok {
+			continue
+		}
+		eps = append(eps, hd.Endpoints()...)
 	}
 	rsvc := h.rsvc
 	config := h.opts
@@ -339,31 +308,16 @@ func (h *httpServer) Register() error {
 	if err != nil {
 		return err
 	}
-	service.Nodes[0].Metadata["protocol"] = "http"
+	service.Nodes[0].Metadata.Set("protocol", "http")
 	service.Endpoints = eps
 
-	h.Lock()
-	subscriberList := make([]*httpSubscriber, 0, len(h.subscribers))
-	for e := range h.subscribers {
-		// Only advertise non internal subscribers
-		subscriberList = append(subscriberList, e)
-	}
-	sort.Slice(subscriberList, func(i, j int) bool {
-		return subscriberList[i].topic > subscriberList[j].topic
-	})
-
-	for _, e := range subscriberList {
-		service.Endpoints = append(service.Endpoints, e.Endpoints()...)
-	}
-	h.Unlock()
-
 	h.RLock()
 	registered := h.registered
 	h.RUnlock()
 
 	if !registered {
 		if config.Logger.V(logger.InfoLevel) {
-			config.Logger.Infof(config.Context, "Register [%s] Registering node: %s", config.Register.String(), service.Nodes[0].ID)
+			config.Logger.Info(config.Context, fmt.Sprintf("Register [%s] Registering node: %s", config.Register.String(), service.Nodes[0].ID))
 		}
 	}
 
@@ -378,29 +332,6 @@ func (h *httpServer) Register() error {
 	}
 
 	h.Lock()
-	for sb := range h.subscribers {
-		handler := h.createSubHandler(sb, config)
-		var opts []broker.SubscribeOption
-		if queue := sb.Options().Queue; len(queue) > 0 {
-			opts = append(opts, broker.SubscribeGroup(queue))
-		}
-
-		subCtx := config.Context
-		if cx := sb.Options().Context; cx != nil {
-			subCtx = cx
-		}
-		opts = append(opts, broker.SubscribeContext(subCtx))
-		opts = append(opts, broker.SubscribeAutoAck(sb.Options().AutoAck))
-		opts = append(opts, broker.SubscribeBodyOnly(sb.Options().BodyOnly))
-
-		sub, err := config.Broker.Subscribe(subCtx, sb.Topic(), handler, opts...)
-		if err != nil {
-			h.Unlock()
-			return err
-		}
-		h.subscribers[sb] = []broker.Subscriber{sub}
-	}
-
 	h.registered = true
 	h.rsvc = service
 	h.Unlock()
@@ -408,7 +339,7 @@ func (h *httpServer) Register() error {
 	return nil
 }
 
-func (h *httpServer) Deregister() error {
+func (h *Server) Deregister() error {
 	h.RLock()
 	config := h.opts
 	h.RUnlock()
@@ -419,7 +350,7 @@ func (h *httpServer) Deregister() error {
 	}
 
 	if config.Logger.V(logger.InfoLevel) {
-		config.Logger.Infof(config.Context, "Deregistering node: %s", service.Nodes[0].ID)
+		config.Logger.Info(config.Context, fmt.Sprintf("Deregistering node: %s", service.Nodes[0].ID))
 	}
 
 	if err := server.DefaultDeregisterFunc(service, config); err != nil {
@@ -435,28 +366,11 @@ func (h *httpServer) Deregister() error {
 	}
 
 	h.registered = false
-
-	subCtx := h.opts.Context
-	for sb, subs := range h.subscribers {
-		if cx := sb.Options().Context; cx != nil {
-			subCtx = cx
-		}
-
-		for _, sub := range subs {
-			config.Logger.Infof(config.Context, "Unsubscribing from topic: %s", sub.Topic())
-			if err := sub.Unsubscribe(subCtx); err != nil {
-				h.Unlock()
-				config.Logger.Errorf(config.Context, "failed to unsubscribe topic: %s, error: %v", sb.Topic(), err)
-				return err
-			}
-		}
-		h.subscribers[sb] = nil
-	}
 	h.Unlock()
 	return nil
 }
 
-func (h *httpServer) Start() error {
+func (h *Server) Start() error {
 	h.RLock()
 	config := h.opts
 	h.RUnlock()
@@ -486,7 +400,7 @@ func (h *httpServer) Start() error {
 	}
 
 	if config.Logger.V(logger.InfoLevel) {
-		config.Logger.Infof(config.Context, "Listening on %s", ts.Addr().String())
+		config.Logger.Info(config.Context, fmt.Sprintf("Listening on %s", ts.Addr().String()))
 	}
 
 	h.Lock()
@@ -494,13 +408,12 @@ func (h *httpServer) Start() error {
 	h.Unlock()
 
 	var handler http.Handler
-	var srvFunc func(net.Listener) error
 
 	// nolint: nestif
 	if h.opts.Context != nil {
 		if hs, ok := h.opts.Context.Value(serverKey{}).(*http.Server); ok && hs != nil {
 			if hs.Handler == nil && h.hd != nil {
-				if hdlr, ok := h.hd.Handler().(http.Handler); ok {
+				if hdlr, ok := h.hd.(http.Handler); ok {
 					hs.Handler = hdlr
 					handler = hs.Handler
 				}
@@ -516,7 +429,7 @@ func (h *httpServer) Start() error {
 	case len(h.handlers) > 0 && h.hd != nil:
 		handler = h
 	case handler == nil && h.hd != nil:
-		if hdlr, ok := h.hd.Handler().(http.Handler); ok {
+		if hdlr, ok := h.hd.(http.Handler); ok {
 			handler = hdlr
 		}
 	}
@@ -525,13 +438,9 @@ func (h *httpServer) Start() error {
 		return fmt.Errorf("cant process with nil handler")
 	}
 
-	if err := config.Broker.Connect(h.opts.Context); err != nil {
-		return err
-	}
-
 	if err := config.RegisterCheck(h.opts.Context); err != nil {
 		if config.Logger.V(logger.ErrorLevel) {
-			config.Logger.Errorf(config.Context, "Server %s-%s register check error: %s", config.Name, config.ID, err)
+			config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register check error: %s", config.Name, config.ID, err))
 		}
 	} else {
 		if err = h.Register(); err != nil {
@@ -541,6 +450,7 @@ func (h *httpServer) Start() error {
 
 	fn := handler
 
+	var hs *http.Server
 	if h.opts.Context != nil {
 		if mwf, ok := h.opts.Context.Value(middlewareKey{}).([]func(http.Handler) http.Handler); ok && len(mwf) > 0 {
 			// wrap the handler func
@@ -548,25 +458,19 @@ func (h *httpServer) Start() error {
 				fn = mwf[i-1](fn)
 			}
 		}
-		if hs, ok := h.opts.Context.Value(serverKey{}).(*http.Server); ok && hs != nil {
+		var ok bool
+		if hs, ok = h.opts.Context.Value(serverKey{}).(*http.Server); ok && hs != nil {
 			hs.Handler = fn
-			srvFunc = hs.Serve
+		} else {
+			hs = &http.Server{Handler: fn}
 		}
 	}
 
-	if srvFunc != nil {
+	go func() {
-		go func() {
+		if cerr := hs.Serve(ts); cerr != nil && !errors.Is(cerr, net.ErrClosed) {
-			if cerr := srvFunc(ts); cerr != nil && !errors.Is(cerr, net.ErrClosed) {
+			h.opts.Logger.Error(h.opts.Context, cerr.Error())
-				h.opts.Logger.Error(h.opts.Context, cerr)
+		}
-			}
+	}()
-		}()
-	} else {
-		go func() {
-			if cerr := http.Serve(ts, fn); cerr != nil && !errors.Is(cerr, net.ErrClosed) {
-				h.opts.Logger.Error(h.opts.Context, cerr)
-			}
-		}()
-	}
 
 	go func() {
 		t := new(time.Ticker)
@@ -592,28 +496,28 @@ func (h *httpServer) Start() error {
 				// nolint: nestif
 				if rerr != nil && registered {
 					if config.Logger.V(logger.ErrorLevel) {
-						config.Logger.Errorf(config.Context, "Server %s-%s register check error: %s, deregister it", config.Name, config.ID, rerr)
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register check error: %s, deregister it", config.Name, config.ID, rerr))
 					}
 					// deregister self in case of error
 					if err := h.Deregister(); err != nil {
 						if config.Logger.V(logger.ErrorLevel) {
-							config.Logger.Errorf(config.Context, "Server %s-%s deregister error: %s", config.Name, config.ID, err)
+							config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s deregister error: %s", config.Name, config.ID, err))
 						}
 					}
 				} else if rerr != nil && !registered {
 					if config.Logger.V(logger.ErrorLevel) {
-						config.Logger.Errorf(config.Context, "Server %s-%s register check error: %s", config.Name, config.ID, rerr)
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register check error: %s", config.Name, config.ID, rerr))
 					}
 					continue
 				}
 				if err := h.Register(); err != nil {
 					if config.Logger.V(logger.ErrorLevel) {
-						config.Logger.Errorf(config.Context, "Server %s-%s register error: %s", config.Name, config.ID, err)
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register error: %s", config.Name, config.ID, err))
 					}
 				}
 
 				if err := h.Register(); err != nil {
-					config.Logger.Errorf(config.Context, "Server register error: %s", err)
+					config.Logger.Error(config.Context, fmt.Sprintf("Server register error: %s", err))
 				}
 			// wait for exit
 			case ch = <-h.exit:
@@ -623,43 +527,46 @@ func (h *httpServer) Start() error {
 
 		// deregister
 		if err := h.Deregister(); err != nil {
-			config.Logger.Errorf(config.Context, "Server deregister error: %s", err)
+			config.Logger.Error(config.Context, fmt.Sprintf("Server deregister error: %s", err))
 		}
 
-		if err := config.Broker.Disconnect(config.Context); err != nil {
+		ctx, cancel := context.WithTimeout(context.Background(), h.opts.GracefulTimeout)
-			config.Logger.Errorf(config.Context, "Broker disconnect error: %s", err)
+		defer cancel()
+
+		err := hs.Shutdown(ctx)
+		if err != nil {
+			err = hs.Close()
 		}
 
-		ch <- ts.Close()
+		ch <- err
 	}()
 
 	return nil
 }
 
-func (h *httpServer) Stop() error {
+func (h *Server) Stop() error {
 	ch := make(chan error)
 	h.exit <- ch
 	return <-ch
 }
 
-func (h *httpServer) String() string {
+func (h *Server) String() string {
 	return "http"
 }
 
-func (h *httpServer) Name() string {
+func (h *Server) Name() string {
 	return h.opts.Name
 }
 
-func NewServer(opts ...server.Option) *httpServer {
+func NewServer(opts ...options.Option) *Server {
 	options := server.NewOptions(opts...)
 	eh := DefaultErrorHandler
 	if v, ok := options.Context.Value(errorHandlerKey{}).(errorHandler); ok && v != nil {
 		eh = v
 	}
-	return &httpServer{
+	return &Server{
 		opts:         options,
 		exit:         make(chan chan error),
-		subscribers:  make(map[*httpSubscriber][]broker.Subscriber),
 		errorHandler: eh,
 		pathHandlers: rhttp.NewTrie(),
 	}

message.go

@@ -1,8 +1,8 @@
 package http
 
 import (
-	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v4/codec"
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/metadata"
 )
 
 type httpMessage struct {

options.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"net/http"
 
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/options"
 )
 
 // SetError pass error to caller
@@ -79,24 +79,24 @@ func GetRspCode(ctx context.Context) int {
 type middlewareKey struct{}
 
 // Middleware passes http middlewares
-func Middleware(mw ...func(http.Handler) http.Handler) server.Option {
+func Middleware(mw ...func(http.Handler) http.Handler) options.Option {
-	return server.SetOption(middlewareKey{}, mw)
+	return options.ContextOption(middlewareKey{}, mw)
 }
 
 type serverKey struct{}
 
-// Server provide ability to pass *http.Server
+// HTTPServer provide ability to pass *http.Server
-func Server(hs *http.Server) server.Option {
+func HTTPServer(hs *http.Server) options.Option {
-	return server.SetOption(serverKey{}, hs)
+	return options.ContextOption(serverKey{}, hs)
 }
 
-type errorHandler func(ctx context.Context, s server.Handler, w http.ResponseWriter, r *http.Request, err error, status int)
+type errorHandler func(ctx context.Context, s interface{}, w http.ResponseWriter, r *http.Request, err error, status int)
 
 type errorHandlerKey struct{}
 
 // ErrorHandler specifies handler for errors
-func ErrorHandler(fn errorHandler) server.Option {
+func ErrorHandler(fn errorHandler) options.Option {
-	return server.SetOption(errorHandlerKey{}, fn)
+	return options.ContextOption(errorHandlerKey{}, fn)
 }
 
 type (
@@ -107,12 +107,18 @@ type (
 )
 
 // PathHandler specifies http handler for path regexp
-func PathHandler(method, path string, handler http.HandlerFunc) server.Option {
+func PathHandler(method, path string, handler http.HandlerFunc) options.Option {
-	return func(o *server.Options) {
+	return func(src interface{}) error {
-		if o.Context == nil {
+		vctx, err := options.Get(src, ".Context")
-			o.Context = context.Background()
+		if err != nil {
+			return err
 		}
-		v, ok := o.Context.Value(pathHandlerKey{}).(*pathHandlerVal)
+		ctx, ok := vctx.(context.Context)
+		if !ok {
+			return fmt.Errorf("invalid option")
+		}
+
+		v, ok := ctx.Value(pathHandlerKey{}).(*pathHandlerVal)
 		if !ok {
 			v = &pathHandlerVal{h: make(map[string]map[string]http.HandlerFunc)}
 		}
@@ -121,16 +127,17 @@ func PathHandler(method, path string, handler http.HandlerFunc) server.Option {
 			m = make(map[string]http.HandlerFunc)
 			v.h[method] = m
 		}
+		ctx = context.WithValue(ctx, pathHandlerKey{}, v)
 		m[path] = handler
-		o.Context = context.WithValue(o.Context, pathHandlerKey{}, v)
+		return options.Set(src, ctx, ".Context")
 	}
 }
 
 type registerRPCHandlerKey struct{}
 
 // RegisterRPCHandler registers compatibility endpoints with /ServiceName.ServiceEndpoint method POST
-func RegisterRPCHandler(b bool) server.Option {
+func RegisterRPCHandler(b bool) options.Option {
-	return server.SetOption(registerRPCHandlerKey{}, b)
+	return options.ContextOption(registerRPCHandlerKey{}, b)
 }
 
 type handlerEndpointsKey struct{}
@@ -143,8 +150,8 @@ type EndpointMetadata struct {
 	Stream bool
 }
 
-func HandlerEndpoints(md []EndpointMetadata) server.HandlerOption {
+func HandlerEndpoints(md []EndpointMetadata) options.Option {
-	return server.SetHandlerOption(handlerEndpointsKey{}, md)
+	return options.ContextOption(handlerEndpointsKey{}, md)
 }
 
 type handlerOptions struct {

request.go

@@ -3,15 +3,12 @@ package http
 import (
 	"io"
 
-	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v4/codec"
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/metadata"
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
 )
 
-var (
+var _ server.Request = &rpcRequest{}
-	_ server.Request = &rpcRequest{}
-	_ server.Message = &rpcMessage{}
-)
 
 type rpcRequest struct {
 	rw          io.ReadWriter
@@ -25,14 +22,6 @@ type rpcRequest struct {
 	stream      bool
 }
 
-type rpcMessage struct {
-	payload     interface{}
-	codec       codec.Codec
-	header      metadata.Metadata
-	topic       string
-	contentType string
-}
-
 func (r *rpcRequest) ContentType() string {
 	return r.contentType
 }
@@ -72,23 +61,3 @@ func (r *rpcRequest) Stream() bool {
 func (r *rpcRequest) Body() interface{} {
 	return r.payload
 }
-
-func (r *rpcMessage) ContentType() string {
-	return r.contentType
-}
-
-func (r *rpcMessage) Topic() string {
-	return r.topic
-}
-
-func (r *rpcMessage) Body() interface{} {
-	return r.payload
-}
-
-func (r *rpcMessage) Header() metadata.Metadata {
-	return r.header
-}
-
-func (r *rpcMessage) Codec() codec.Codec {
-	return r.codec
-}

server.go

@@ -7,9 +7,11 @@ import (
 	"unicode"
 	"unicode/utf8"
 
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
 )
 
+var typeOfError = reflect.TypeOf((*error)(nil)).Elem()
+
 type methodType struct {
 	ArgType     reflect.Type
 	ReplyType   reflect.Type

subscriber.go

@@ -1,208 +0,0 @@
-package http
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"reflect"
-	"strings"
-
-	"go.unistack.org/micro/v3/broker"
-	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/register"
-	"go.unistack.org/micro/v3/server"
-)
-
-var typeOfError = reflect.TypeOf((*error)(nil)).Elem()
-
-type handler struct {
-	reqType reflect.Type
-	ctxType reflect.Type
-	method  reflect.Value
-}
-
-type httpSubscriber struct {
-	topic      string
-	rcvr       reflect.Value
-	typ        reflect.Type
-	subscriber interface{}
-	handlers   []*handler
-	endpoints  []*register.Endpoint
-	opts       server.SubscriberOptions
-}
-
-func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOption) server.Subscriber {
-	options := server.NewSubscriberOptions(opts...)
-
-	var endpoints []*register.Endpoint
-	var handlers []*handler
-
-	if typ := reflect.TypeOf(sub); typ.Kind() == reflect.Func {
-		h := &handler{
-			method: reflect.ValueOf(sub),
-		}
-
-		switch typ.NumIn() {
-		case 1:
-			h.reqType = typ.In(0)
-		case 2:
-			h.ctxType = typ.In(0)
-			h.reqType = typ.In(1)
-		}
-
-		handlers = append(handlers, h)
-		ep := &register.Endpoint{
-			Name:     "Func",
-			Request:  register.ExtractSubValue(typ),
-			Metadata: metadata.New(2),
-		}
-		ep.Metadata.Set("topic", topic)
-		ep.Metadata.Set("subscriber", "true")
-		endpoints = append(endpoints, ep)
-	} else {
-		hdlr := reflect.ValueOf(sub)
-		name := reflect.Indirect(hdlr).Type().Name()
-
-		for m := 0; m < typ.NumMethod(); m++ {
-			method := typ.Method(m)
-			h := &handler{
-				method: method.Func,
-			}
-
-			switch method.Type.NumIn() {
-			case 2:
-				h.reqType = method.Type.In(1)
-			case 3:
-				h.ctxType = method.Type.In(1)
-				h.reqType = method.Type.In(2)
-			}
-
-			handlers = append(handlers, h)
-			ep := &register.Endpoint{
-				Name:     name + "." + method.Name,
-				Request:  register.ExtractSubValue(method.Type),
-				Metadata: metadata.New(2),
-			}
-			ep.Metadata.Set("topic", topic)
-			ep.Metadata.Set("subscriber", "true")
-			endpoints = append(endpoints, ep)
-		}
-	}
-
-	return &httpSubscriber{
-		rcvr:       reflect.ValueOf(sub),
-		typ:        reflect.TypeOf(sub),
-		topic:      topic,
-		subscriber: sub,
-		handlers:   handlers,
-		endpoints:  endpoints,
-		opts:       options,
-	}
-}
-
-func (s *httpServer) createSubHandler(sb *httpSubscriber, opts server.Options) broker.Handler {
-	return func(p broker.Event) error {
-		msg := p.Message()
-		ct := msg.Header["Content-Type"]
-		cf, err := s.newCodec(ct)
-		if err != nil {
-			return err
-		}
-
-		hdr := metadata.Copy(msg.Header)
-		delete(hdr, "Content-Type")
-		ctx := metadata.NewIncomingContext(context.Background(), hdr)
-
-		results := make(chan error, len(sb.handlers))
-
-		for i := 0; i < len(sb.handlers); i++ {
-			handler := sb.handlers[i]
-
-			var isVal bool
-			var req reflect.Value
-
-			if handler.reqType.Kind() == reflect.Ptr {
-				req = reflect.New(handler.reqType.Elem())
-			} else {
-				req = reflect.New(handler.reqType)
-				isVal = true
-			}
-			if isVal {
-				req = req.Elem()
-			}
-
-			buf := bytes.NewBuffer(msg.Body)
-
-			if err := cf.ReadHeader(buf, &codec.Message{}, codec.Event); err != nil {
-				return err
-			}
-
-			if err := cf.ReadBody(buf, req.Interface()); err != nil {
-				return err
-			}
-
-			fn := func(ctx context.Context, msg server.Message) error {
-				var vals []reflect.Value
-				if sb.typ.Kind() != reflect.Func {
-					vals = append(vals, sb.rcvr)
-				}
-				if handler.ctxType != nil {
-					vals = append(vals, reflect.ValueOf(ctx))
-				}
-
-				vals = append(vals, reflect.ValueOf(msg.Body()))
-
-				returnValues := handler.method.Call(vals)
-				if err := returnValues[0].Interface(); err != nil {
-					return err.(error)
-				}
-				return nil
-			}
-
-			for i := len(opts.SubWrappers); i > 0; i-- {
-				fn = opts.SubWrappers[i-1](fn)
-			}
-
-			go func() {
-				results <- fn(ctx, &httpMessage{
-					topic:       sb.topic,
-					contentType: ct,
-					payload:     req.Interface(),
-					header:      msg.Header,
-					codec:       cf,
-				})
-			}()
-		}
-
-		var errors []string
-
-		for i := 0; i < len(sb.handlers); i++ {
-			if err := <-results; err != nil {
-				errors = append(errors, err.Error())
-			}
-		}
-
-		if len(errors) > 0 {
-			return fmt.Errorf("subscriber error: %s", strings.Join(errors, "\n"))
-		}
-
-		return nil
-	}
-}
-
-func (s *httpSubscriber) Topic() string {
-	return s.topic
-}
-
-func (s *httpSubscriber) Subscriber() interface{} {
-	return s.subscriber
-}
-
-func (s *httpSubscriber) Endpoints() []*register.Endpoint {
-	return s.endpoints
-}
-
-func (s *httpSubscriber) Options() server.SubscriberOptions {
-	return s.opts
-}

tools.go

@@ -0,0 +1,8 @@
+//go:build tools
+
+package http
+
+import (
+	_ "go.unistack.org/micro-proto/v4"
+	_ "go.unistack.org/protoc-gen-go-micro/v4"
+)

util.go

@@ -5,8 +5,8 @@ import (
 	"net/http"
 	"strings"
 
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/metadata"
-	rutil "go.unistack.org/micro/v3/util/reflect"
+	rutil "go.unistack.org/micro/v4/util/reflect"
 )
 
 func FillRequest(ctx context.Context, req interface{}, opts ...FillRequestOption) error {
@@ -31,15 +31,13 @@ func FillRequest(ctx context.Context, req interface{}, opts ...FillRequestOption
 		}
 	}
 
-	cookies := strings.Split(md["Cookie"], ";")
+	cookies := md["Cookie"]
 	cmd := make(map[string]string, len(cookies))
-	for _, cookie := range cookies {
+	kv := strings.Split(cookies, "=")
-		kv := strings.Split(cookie, "=")
+	if len(kv) != 2 {
-		if len(kv) != 2 {
+		return nil
-			continue
-		}
-		cmd[strings.TrimSpace(kv[0])] = strings.TrimSpace(kv[1])
 	}
+	cmd[strings.TrimSpace(kv[0])] = strings.TrimSpace(kv[1])
 	for idx := 0; idx < len(options.cookies)/2; idx += 2 {
 		k := http.CanonicalHeaderKey(options.cookies[idx])
 		v, ok := cmd[k]

util_test.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 	"testing"
 
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/metadata"
 )
 
 func TestFillrequest(t *testing.T) {