| /* |
| * 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 thrift |
| |
| import ( |
| "context" |
| "log" |
| ) |
| |
| // BEGIN THRIFT GENERATED CODE SECTION |
| // |
| // In real code this section should be from thrift generated code instead, |
| // but for this example we just define some placeholders here. |
| |
| type MyEndpointRequest struct{} |
| |
| type MyEndpointResponse struct{} |
| |
| type MyService interface { |
| MyEndpoint(ctx context.Context, req *MyEndpointRequest) (*MyEndpointResponse, error) |
| } |
| |
| func NewMyServiceClient(_ TClient) MyService { |
| // In real code this certainly won't return nil. |
| return nil |
| } |
| |
| // END THRIFT GENERATED CODE SECTION |
| |
| func simpleClientLoggingMiddleware(next TClient) TClient { |
| return WrappedTClient{ |
| Wrapped: func(ctx context.Context, method string, args, result TStruct) error { |
| log.Printf("Before: %q", method) |
| log.Printf("Args: %#v", args) |
| err := next.Call(ctx, method, args, result) |
| log.Printf("After: %q", method) |
| log.Printf("Result: %#v", result) |
| if err != nil { |
| log.Printf("Error: %v", err) |
| } |
| return err |
| }, |
| } |
| } |
| |
| // This example demonstrates how to define and use a simple logging middleware |
| // to your thrift client. |
| func ExampleClientMiddleware() { |
| var ( |
| trans TTransport |
| protoFactory TProtocolFactory |
| ) |
| var client TClient |
| client = NewTStandardClient( |
| protoFactory.GetProtocol(trans), |
| protoFactory.GetProtocol(trans), |
| ) |
| client = WrapClient(client, simpleClientLoggingMiddleware) |
| myServiceClient := NewMyServiceClient(client) |
| myServiceClient.MyEndpoint(context.Background(), &MyEndpointRequest{}) |
| } |