| /* |
| * 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 dubbo3 |
| |
| import ( |
| "context" |
| "reflect" |
| "strconv" |
| "strings" |
| "sync" |
| "time" |
| ) |
| |
| import ( |
| hessian2 "github.com/apache/dubbo-go-hessian2" |
| triConfig "github.com/dubbogo/triple/pkg/config" |
| "github.com/dubbogo/triple/pkg/triple" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go/common" |
| "github.com/apache/dubbo-go/common/constant" |
| "github.com/apache/dubbo-go/common/logger" |
| "github.com/apache/dubbo-go/config" |
| "github.com/apache/dubbo-go/protocol" |
| invocation_impl "github.com/apache/dubbo-go/protocol/invocation" |
| ) |
| |
| // DubboInvoker is implement of protocol.Invoker. A dubboInvoker refer to one service and ip. |
| type DubboInvoker struct { |
| protocol.BaseInvoker |
| // the net layer client, it is focus on network communication. |
| client *triple.TripleClient |
| // quitOnce is used to make sure DubboInvoker is only destroyed once |
| quitOnce sync.Once |
| // timeout for service(interface) level. |
| timeout time.Duration |
| // clientGuard is the client lock of dubbo invoker |
| clientGuard *sync.RWMutex |
| } |
| |
| // NewDubboInvoker constructor |
| func NewDubboInvoker(url *common.URL) (*DubboInvoker, error) { |
| requestTimeout := config.GetConsumerConfig().RequestTimeout |
| requestTimeoutStr := url.GetParam(constant.TIMEOUT_KEY, config.GetConsumerConfig().Request_Timeout) |
| if t, err := time.ParseDuration(requestTimeoutStr); err == nil { |
| requestTimeout = t |
| } |
| |
| key := url.GetParam(constant.BEAN_NAME_KEY, "") |
| consumerService := config.GetConsumerService(key) |
| |
| // new triple client |
| triOption := triConfig.NewTripleOption( |
| triConfig.WithClientTimeout(uint32(requestTimeout.Seconds())), |
| ) |
| client, err := triple.NewTripleClient(url, consumerService, triOption) |
| |
| if err != nil { |
| return nil, err |
| } |
| |
| return &DubboInvoker{ |
| BaseInvoker: *protocol.NewBaseInvoker(url), |
| client: client, |
| timeout: requestTimeout, |
| clientGuard: &sync.RWMutex{}, |
| }, nil |
| } |
| |
| func (di *DubboInvoker) setClient(client *triple.TripleClient) { |
| di.clientGuard.Lock() |
| defer di.clientGuard.Unlock() |
| |
| di.client = client |
| } |
| |
| func (di *DubboInvoker) getClient() *triple.TripleClient { |
| di.clientGuard.RLock() |
| defer di.clientGuard.RUnlock() |
| |
| return di.client |
| } |
| |
| // Invoke call remoting. |
| func (di *DubboInvoker) Invoke(ctx context.Context, invocation protocol.Invocation) protocol.Result { |
| var ( |
| result protocol.RPCResult |
| ) |
| |
| if !di.BaseInvoker.IsAvailable() { |
| // Generally, the case will not happen, because the invoker has been removed |
| // from the invoker list before destroy,so no new request will enter the destroyed invoker |
| logger.Warnf("this dubboInvoker is destroyed") |
| result.Err = protocol.ErrDestroyedInvoker |
| return &result |
| } |
| |
| di.clientGuard.RLock() |
| defer di.clientGuard.RUnlock() |
| |
| if di.client == nil { |
| result.Err = protocol.ErrClientClosed |
| return &result |
| } |
| |
| if !di.BaseInvoker.IsAvailable() { |
| // Generally, the case will not happen, because the invoker has been removed |
| // from the invoker list before destroy,so no new request will enter the destroyed invoker |
| logger.Warnf("this grpcInvoker is destroying") |
| result.Err = protocol.ErrDestroyedInvoker |
| return &result |
| } |
| |
| // append interface id to ctx |
| ctx = context.WithValue(ctx, constant.DubboCtxKey(constant.INTERFACE_KEY), di.BaseInvoker.GetUrl().GetParam(constant.INTERFACE_KEY, "")) |
| in := make([]reflect.Value, 0, 16) |
| in = append(in, reflect.ValueOf(ctx)) |
| |
| if len(invocation.ParameterValues()) > 0 { |
| in = append(in, invocation.ParameterValues()...) |
| } |
| |
| methodName := invocation.MethodName() |
| method := di.client.Invoker.MethodByName(methodName) |
| |
| // call function in pb.go |
| res := method.Call(in) |
| |
| result.Rest = res[0] |
| // check err |
| if !res[1].IsNil() { |
| result.Err = res[1].Interface().(error) |
| } else { |
| _ = hessian2.ReflectResponse(res[0], invocation.Reply()) |
| } |
| |
| return &result |
| } |
| |
| // get timeout including methodConfig |
| func (di *DubboInvoker) getTimeout(invocation *invocation_impl.RPCInvocation) time.Duration { |
| timeout := di.GetUrl().GetParam(strings.Join([]string{constant.METHOD_KEYS, invocation.MethodName(), constant.TIMEOUT_KEY}, "."), "") |
| if len(timeout) != 0 { |
| if t, err := time.ParseDuration(timeout); err == nil { |
| // config timeout into attachment |
| invocation.SetAttachments(constant.TIMEOUT_KEY, strconv.Itoa(int(t.Milliseconds()))) |
| return t |
| } |
| } |
| // set timeout into invocation at method level |
| invocation.SetAttachments(constant.TIMEOUT_KEY, strconv.Itoa(int(di.timeout.Milliseconds()))) |
| return di.timeout |
| } |
| |
| // IsAvailable check if invoker is available, now it is useless |
| func (di *DubboInvoker) IsAvailable() bool { |
| client := di.getClient() |
| if client != nil { |
| return client.IsAvailable() |
| } |
| |
| return false |
| } |
| |
| // Destroy destroy dubbo3 client invoker. |
| func (di *DubboInvoker) Destroy() { |
| di.quitOnce.Do(func() { |
| di.BaseInvoker.Destroy() |
| client := di.getClient() |
| if client != nil { |
| di.setClient(nil) |
| client.Close() |
| } |
| }) |
| } |