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feature add integration for grpc (#158)
* finish ut for interceptor * add client interceptor * add server interceptor * adjust location for test file * format in goimports * goimformat * adjust package struct of grpc interceptor, move constant of grpc to common package. * adjust gprc interceptor file struct * refact directory, optimize grpc test case * optimize proto * delte test file * delte test file * fix npe for server integration * go mod tidy * remove duplicate constant
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| /* | ||
| * 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 grpc | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/metadata" | ||
|
|
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| "github.com/seata/seata-go/pkg/common" | ||
| "github.com/seata/seata-go/pkg/common/log" | ||
| "github.com/seata/seata-go/pkg/tm" | ||
| ) | ||
|
|
||
| // ClientTransactionInterceptor is client interceptor of grpc, | ||
| // it's function is obtain xid in SeataContext, | ||
| // and put it in the http header. | ||
| func ClientTransactionInterceptor(ctx context.Context, method string, req, reply interface{}, | ||
| cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error { | ||
| //set the XID when intercepting a client request and release it directly when intercepting a response | ||
| if tm.IsSeataContext(ctx) { | ||
| xid := tm.GetXID(ctx) | ||
| header := make(map[string]string) | ||
| header[common.XidKey] = xid | ||
| ctx = metadata.NewOutgoingContext(ctx, metadata.New(header)) | ||
| } | ||
|
|
||
| start := time.Now() | ||
| err := invoker(ctx, method, req, reply, cc, opts...) | ||
| end := time.Now() | ||
| log.Infof("RPC: %s, start time: %s, end time: %s, err: %v", method, | ||
| start.Format("Basic"), end.Format(time.RFC3339), err) | ||
| return err | ||
| } | ||
|
|
||
| // ServerTransactionInterceptor is server interceptor of grpc | ||
| // it's function is get xid from grpc http header ,and put it | ||
| // into the context. | ||
| func ServerTransactionInterceptor(ctx context.Context, req interface{}, | ||
| _ *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) { | ||
| md, ok := metadata.FromIncomingContext(ctx) | ||
| if !ok { | ||
| log.Errorf("missing grpc metadata") | ||
| } | ||
| var xid string | ||
| if slice := md.Get(common.XidKey); slice != nil && len(slice) > 0 { | ||
| xid = slice[0] | ||
| } | ||
| if xid == "" { | ||
| if slice := md.Get(common.XidKeyLowercase); slice != nil && len(slice) > 0 { | ||
| xid = slice[0] | ||
| } | ||
| } | ||
| if xid != "" { | ||
| ctx = tm.InitSeataContext(ctx) | ||
| tm.SetXID(ctx, xid) | ||
| log.Infof("global transaction xid is :%s") | ||
| } else { | ||
| log.Info("global transaction xid is empty") | ||
| } | ||
|
|
||
| m, err := handler(ctx, req) | ||
| if err != nil { | ||
| log.Errorf("RPC failed with error %v", err) | ||
| } | ||
| return m, err | ||
| } |