| /* |
| * 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 auth |
| |
| import ( |
| "context" |
| "fmt" |
| "sync" |
| ) |
| |
| import ( |
| "dubbo.apache.org/dubbo-go/v3/common/constant" |
| "dubbo.apache.org/dubbo-go/v3/common/extension" |
| "dubbo.apache.org/dubbo-go/v3/filter" |
| "dubbo.apache.org/dubbo-go/v3/protocol" |
| ) |
| |
| var ( |
| signOnce sync.Once |
| sign *signFilter |
| ) |
| |
| func init() { |
| extension.SetFilter(constant.AuthConsumerFilterKey, newSignFilter) |
| } |
| |
| // signFilter signs the request on consumer side |
| type signFilter struct{} |
| |
| func newSignFilter() filter.Filter { |
| if sign == nil { |
| signOnce.Do(func() { |
| sign = &signFilter{} |
| }) |
| } |
| return sign |
| } |
| |
| // Invoke retrieves the configured Authenticator to add signature to invocation |
| func (sf *signFilter) Invoke(ctx context.Context, invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result { |
| url := invoker.GetURL() |
| |
| err := doAuthWork(url, func(authenticator filter.Authenticator) error { |
| return authenticator.Sign(invocation, url) |
| }) |
| if err != nil { |
| panic(fmt.Sprintf("Sign for invocation %s # %s failed", url.ServiceKey(), invocation.MethodName())) |
| } |
| return invoker.Invoke(ctx, invocation) |
| } |
| |
| // OnResponse dummy process, returns the result directly |
| func (sf *signFilter) OnResponse(ctx context.Context, result protocol.Result, invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result { |
| return result |
| } |