fix: resove dev RPCResult struct change

protocol/dubbo/dubbo_codec.go

@@ -213,7 +213,7 @@ func (c *DubboCodec) decodeRequest(data []byte) (*remoting.Request, int, error)
 		//invocation := request.Data.(*invocation.RPCInvocation)
 		var methodName string
 		var args []interface{}
-		var attachments map[string]string = make(map[string]string)
+		attachments := make(map[string]interface{})
 		if req[impl.DubboVersionKey] != nil {
 			//dubbo version
 			request.Version = req[impl.DubboVersionKey].(string)
@@ -225,7 +225,7 @@ func (c *DubboCodec) decodeRequest(data []byte) (*remoting.Request, int, error)
 		//method
 		methodName = pkg.Service.Method
 		args = req[impl.ArgsKey].([]interface{})
-		attachments = req[impl.AttachmentsKey].(map[string]string)
+		attachments = req[impl.AttachmentsKey].(map[string]interface{})
 		invoc := invocation.NewRPCInvocationWithOptions(invocation.WithAttachments(attachments),
 			invocation.WithArguments(args), invocation.WithMethodName(methodName))
 		request.Data = invoc

protocol/dubbo/impl/codec_test.go

@@ -78,5 +78,12 @@ func TestDubboPackage_MarshalAndUnmarshal(t *testing.T) {
 	assert.Equal(t, "Method", pkgres.Service.Method)
 	assert.Equal(t, "Ljava/lang/String;", reassembleBody["argsTypes"].(string))
 	assert.Equal(t, []interface{}{"a"}, reassembleBody["args"])
-	assert.Equal(t, map[string]string{"dubbo": "2.0.2", "interface": "Service", "path": "path", "timeout": "1000", "version": "2.6"}, reassembleBody["attachments"].(map[string]string))
+	tmpData := map[string]interface{}{
+		"dubbo":     "2.0.2",
+		"interface": "Service",
+		"path":      "path",
+		"timeout":   "1000",
+		"version":   "2.6",
+	}
+	assert.Equal(t, tmpData, reassembleBody["attachments"])
 }

protocol/dubbo/impl/hessian.go

@@ -67,7 +67,11 @@ func marshalResponse(encoder *hessian.Encoder, p DubboPackage) ([]byte, error) {
 		if p.IsHeartBeat() {
 			encoder.Encode(nil)
 		} else {
-			atta := isSupportResponseAttachment(response.Attachments[DUBBO_VERSION_KEY])
+			var version string
+			if attachmentVersion, ok := response.Attachments[DUBBO_VERSION_KEY]; ok {
+				version = attachmentVersion.(string)
+			}
+			atta := isSupportResponseAttachment(version)
 
 			var resWithException, resValue, resNullValue int32
 			if atta {
@@ -255,7 +259,7 @@ func unmarshalRequestBody(body []byte, p *DubboPackage) error {
 
 	if v, ok := attachments.(map[interface{}]interface{}); ok {
 		v[DUBBO_VERSION_KEY] = dubboVersion
-		req[6] = hessian.ToMapStringString(v)
+		req[6] = ToMapStringInterface(v)
 		buildServerSidePackageBody(p)
 		return nil
 	}
@@ -285,7 +289,7 @@ func unmarshalResponseBody(body []byte, p *DubboPackage) error {
 				return perrors.WithStack(err)
 			}
 			if v, ok := attachments.(map[interface{}]interface{}); ok {
-				atta := hessian.ToMapStringString(v)
+				atta := ToMapStringInterface(v)
 				response.Attachments = atta
 			} else {
 				return perrors.Errorf("get wrong attachments: %+v", attachments)
@@ -310,7 +314,7 @@ func unmarshalResponseBody(body []byte, p *DubboPackage) error {
 				return perrors.WithStack(err)
 			}
 			if v, ok := attachments.(map[interface{}]interface{}); ok {
-				atta := hessian.ToMapStringString(v)
+				atta := ToMapStringInterface(v)
 				response.Attachments = atta
 			} else {
 				return perrors.Errorf("get wrong attachments: %+v", attachments)
@@ -326,7 +330,7 @@ func unmarshalResponseBody(body []byte, p *DubboPackage) error {
 				return perrors.WithStack(err)
 			}
 			if v, ok := attachments.(map[interface{}]interface{}); ok {
-				atta := hessian.ToMapStringString(v)
+				atta := ToMapStringInterface(v)
 				response.Attachments = atta
 			} else {
 				return perrors.Errorf("get wrong attachments: %+v", attachments)
@@ -342,7 +346,7 @@ func buildServerSidePackageBody(pkg *DubboPackage) {
 	if len(req) > 0 {
 		var dubboVersion, argsTypes string
 		var args []interface{}
-		var attachments map[string]string
+		var attachments map[string]interface{}
 		svc := Service{}
 		if req[0] != nil {
 			dubboVersion = req[0].(string)
@@ -363,18 +367,18 @@ func buildServerSidePackageBody(pkg *DubboPackage) {
 			args = req[5].([]interface{})
 		}
 		if req[6] != nil {
-			attachments = req[6].(map[string]string)
+			attachments = req[6].(map[string]interface{})
 		}
-		if svc.Path == "" && len(attachments[constant.PATH_KEY]) > 0 {
-			svc.Path = attachments[constant.PATH_KEY]
+		if svc.Path == "" && attachments[constant.PATH_KEY] != nil && len(attachments[constant.PATH_KEY].(string)) > 0 {
+			svc.Path = attachments[constant.PATH_KEY].(string)
 		}
 		if _, ok := attachments[constant.INTERFACE_KEY]; ok {
-			svc.Interface = attachments[constant.INTERFACE_KEY]
+			svc.Interface = attachments[constant.INTERFACE_KEY].(string)
 		} else {
 			svc.Interface = svc.Path
 		}
-		if len(attachments[constant.GROUP_KEY]) > 0 {
-			svc.Group = attachments[constant.GROUP_KEY]
+		if _, ok := attachments[constant.GROUP_KEY]; ok {
+			svc.Group = attachments[constant.GROUP_KEY].(string)
 		}
 		pkg.SetService(svc)
 		pkg.SetBody(map[string]interface{}{
@@ -503,6 +507,20 @@ func getArgType(v interface{}) string {
 	// return "java.lang.RuntimeException"
 }
 
+func ToMapStringInterface(origin map[interface{}]interface{}) map[string]interface{} {
+	dest := make(map[string]interface{}, len(origin))
+	for k, v := range origin {
+		if kv, ok := k.(string); ok {
+			if v == nil {
+				dest[kv] = ""
+				continue
+			}
+			dest[kv] = v
+		}
+	}
+	return dest
+}
+
 func init() {
 	SetSerializer("hessian2", HessianSerializer{})
 }

protocol/dubbo/impl/request.go

@@ -19,12 +19,12 @@ package impl
 
 type RequestPayload struct {
 	Params      interface{}
-	Attachments map[string]string
+	Attachments map[string]interface{}
 }
 
-func NewRequestPayload(args interface{}, atta map[string]string) *RequestPayload {
+func NewRequestPayload(args interface{}, atta map[string]interface{}) *RequestPayload {
 	if atta == nil {
-		atta = make(map[string]string)
+		atta = make(map[string]interface{})
 	}
 	return &RequestPayload{
 		Params:      args,

protocol/dubbo/impl/response.go

@@ -20,13 +20,13 @@ package impl
 type ResponsePayload struct {
 	RspObj      interface{}
 	Exception   error
-	Attachments map[string]string
+	Attachments map[string]interface{}
 }
 
 // NewResponse create a new ResponsePayload
-func NewResponsePayload(rspObj interface{}, exception error, attachments map[string]string) *ResponsePayload {
+func NewResponsePayload(rspObj interface{}, exception error, attachments map[string]interface{}) *ResponsePayload {
 	if attachments == nil {
-		attachments = make(map[string]string)
+		attachments = make(map[string]interface{})
 	}
 	return &ResponsePayload{
 		RspObj:      rspObj,

remoting/getty/dubbo_codec_for_test.go

@@ -205,7 +205,7 @@ func (c *DubboTestCodec) decodeRequest(data []byte) (*remoting.Request, int, err
 		//invocation := request.Data.(*invocation.RPCInvocation)
 		var methodName string
 		var args []interface{}
-		var attachments map[string]string = make(map[string]string)
+		attachments := make(map[string]interface{})
 		if req[impl.DubboVersionKey] != nil {
 			//dubbo version
 			request.Version = req[impl.DubboVersionKey].(string)
@@ -217,7 +217,7 @@ func (c *DubboTestCodec) decodeRequest(data []byte) (*remoting.Request, int, err
 		//method
 		methodName = pkg.Service.Method
 		args = req[impl.ArgsKey].([]interface{})
-		attachments = req[impl.AttachmentsKey].(map[string]string)
+		attachments = req[impl.AttachmentsKey].(map[string]interface{})
 		invoc := invocation.NewRPCInvocationWithOptions(invocation.WithAttachments(attachments),
 			invocation.WithArguments(args), invocation.WithMethodName(methodName))
 		request.Data = invoc

remoting/getty/listener_test.go

@@ -48,7 +48,9 @@ func TestRebuildCtx(t *testing.T) {
 
 	span, ctx := opentracing.StartSpanFromContext(ctx, "Test-Client")
 
-	injectTraceCtx(span, inv)
+	err := injectTraceCtx(span, inv)
+	assert.NoError(t, err)
+
 	// rebuild the context success
 	inv = invocation.NewRPCInvocation("MethodName", []interface{}{"OK", "Hello"}, attach)
 	ctx = rebuildCtx(inv)
@@ -71,13 +73,3 @@ func rebuildCtx(inv *invocation.RPCInvocation) context.Context {
 	}
 	return ctx
 }
-
-func filterContext(attachments map[string]interface{}) map[string]string {
-	var traceAttchment = make(map[string]string)
-	for k, v := range attachments {
-		if r, ok := v.(string); ok {
-			traceAttchment[k] = r
-		}
-	}
-	return traceAttchment
-}

remoting/getty/opentracing.go

@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package getty
+
+import (
+	"github.com/opentracing/opentracing-go"
+)
+import (
+	invocation_impl "github.com/apache/dubbo-go/protocol/invocation"
+)
+
+func injectTraceCtx(currentSpan opentracing.Span, inv *invocation_impl.RPCInvocation) error {
+	// inject opentracing ctx
+	traceAttachments := filterContext(inv.Attachments())
+	carrier := opentracing.TextMapCarrier(traceAttachments)
+	err := opentracing.GlobalTracer().Inject(currentSpan.Context(), opentracing.TextMap, carrier)
+	if err == nil {
+		fillTraceAttachments(inv.Attachments(), traceAttachments)
+	}
+	return err
+}
+
+func extractTraceCtx(inv *invocation_impl.RPCInvocation) (opentracing.SpanContext, error) {
+	traceAttachments := filterContext(inv.Attachments())
+	// actually, if user do not use any opentracing framework, the err will not be nil.
+	spanCtx, err := opentracing.GlobalTracer().Extract(opentracing.TextMap,
+		opentracing.TextMapCarrier(traceAttachments))
+	return spanCtx, err
+}
+
+func filterContext(attachments map[string]interface{}) map[string]string {
+	var traceAttchment = make(map[string]string)
+	for k, v := range attachments {
+		if r, ok := v.(string); ok {
+			traceAttchment[k] = r
+		}
+	}
+	return traceAttchment
+}
+
+func fillTraceAttachments(attachments map[string]interface{}, traceAttachment map[string]string) {
+	for k, v := range traceAttachment {
+		attachments[k] = v
+	}
+}