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/*
* 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 org.apache.dubbo.rpc.protocol.injvm;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.extension.ExtensionLoader;
import org.apache.dubbo.common.threadpool.manager.ExecutorRepository;
import org.apache.dubbo.rpc.AppResponse;
import org.apache.dubbo.rpc.AsyncRpcResult;
import org.apache.dubbo.rpc.Constants;
import org.apache.dubbo.rpc.Exporter;
import org.apache.dubbo.rpc.FutureContext;
import org.apache.dubbo.rpc.Invocation;
import org.apache.dubbo.rpc.InvokeMode;
import org.apache.dubbo.rpc.Result;
import org.apache.dubbo.rpc.RpcContext;
import org.apache.dubbo.rpc.RpcException;
import org.apache.dubbo.rpc.RpcInvocation;
import org.apache.dubbo.rpc.protocol.AbstractInvoker;
import org.apache.dubbo.rpc.protocol.DelegateExporterMap;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import static org.apache.dubbo.common.constants.CommonConstants.LOCALHOST_VALUE;
import static org.apache.dubbo.rpc.Constants.ASYNC_KEY;
/**
* InjvmInvoker
*/
class InjvmInvoker extends AbstractInvoker {
private final String key;
private final DelegateExporterMap delegateExporterMap;
private final ExecutorRepository executorRepository = ExtensionLoader.getExtensionLoader(ExecutorRepository.class).getDefaultExtension();
InjvmInvoker(Class type, URL url, String key, DelegateExporterMap delegateExporterMap) {
super(type, url);
this.key = key;
this.delegateExporterMap = delegateExporterMap;
}
@Override
public boolean isAvailable() {
InjvmExporter exporter = (InjvmExporter) delegateExporterMap.getExport(key);
if (exporter == null) {
return false;
} else {
return super.isAvailable();
}
}
@Override
public Result doInvoke(Invocation invocation) throws Throwable {
Exporter exporter = InjvmProtocol.getExporter(delegateExporterMap, getUrl());
if (exporter == null) {
throw new RpcException("Service [" + key + "] not found.");
}
RpcContext.getContext().setRemoteAddress(LOCALHOST_VALUE, 0);
// Solve local exposure, the server opens the token, and the client call fails.
URL serverURL = exporter.getInvoker().getUrl();
boolean serverHasToken = serverURL.hasParameter(Constants.TOKEN_KEY);
if (serverHasToken) {
invocation.setAttachment(Constants.TOKEN_KEY, serverURL.getParameter(Constants.TOKEN_KEY));
}
if (isAsync(exporter.getInvoker().getUrl(), getUrl())) {
((RpcInvocation) invocation).setInvokeMode(InvokeMode.ASYNC);
// use consumer executor
ExecutorService executor = executorRepository.createExecutorIfAbsent(getUrl());
CompletableFuture appResponseFuture = CompletableFuture.supplyAsync(() -> {
Result result = exporter.getInvoker().invoke(invocation);
if (result.hasException()) {
return new AppResponse(result.getException());
} else {
return new AppResponse(result.getValue());
}
}, executor);
// save for 2.6.x compatibility, for example, TraceFilter in Zipkin uses com.alibaba.xxx.FutureAdapter
FutureContext.getContext().setCompatibleFuture(appResponseFuture);
AsyncRpcResult result = new AsyncRpcResult(appResponseFuture, invocation);
result.setExecutor(executor);
return result;
} else {
return exporter.getInvoker().invoke(invocation);
}
}
private boolean isAsync(URL remoteUrl, URL localUrl) {
if (localUrl.hasParameter(ASYNC_KEY)) {
return localUrl.getParameter(ASYNC_KEY, false);
}
return remoteUrl.getParameter(ASYNC_KEY, false);
}
}