/
BasicHttpAsyncClient.java
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/
BasicHttpAsyncClient.java
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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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.impl.nio.client;
import java.io.IOException;
import java.util.concurrent.Future;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.ConnectionReuseStrategy;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.HttpResponse;
import org.apache.http.conn.routing.HttpRoute;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.nio.conn.BasicIOSessionManager;
import org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor;
import org.apache.http.nio.client.HttpAsyncClient;
import org.apache.http.nio.client.HttpAsyncExchangeHandler;
import org.apache.http.nio.concurrent.FutureCallback;
import org.apache.http.nio.conn.IOSessionManager;
import org.apache.http.nio.reactor.ConnectingIOReactor;
import org.apache.http.nio.reactor.IOEventDispatch;
import org.apache.http.nio.reactor.IOReactorException;
import org.apache.http.nio.reactor.IOReactorStatus;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpParams;
import org.apache.http.params.SyncBasicHttpParams;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.protocol.ImmutableHttpProcessor;
import org.apache.http.protocol.RequestConnControl;
import org.apache.http.protocol.RequestContent;
import org.apache.http.protocol.RequestExpectContinue;
import org.apache.http.protocol.RequestTargetHost;
import org.apache.http.protocol.RequestUserAgent;
public class BasicHttpAsyncClient implements HttpAsyncClient {
private final Log log;
private final HttpParams params;
private final ConnectingIOReactor ioReactor;
private final IOSessionManager<HttpRoute> sessmrg;
private Thread reactorThread;
public BasicHttpAsyncClient(
final ConnectingIOReactor ioReactor,
final IOSessionManager<HttpRoute> sessmrg,
final HttpParams params) throws IOReactorException {
super();
this.log = LogFactory.getLog(getClass());
if (params != null) {
this.params = params;
} else {
this.params = createDefaultHttpParams();
}
this.ioReactor = ioReactor;
this.sessmrg = sessmrg;
}
public BasicHttpAsyncClient(final HttpParams params) throws IOReactorException {
super();
this.log = LogFactory.getLog(getClass());
if (params != null) {
this.params = params;
} else {
this.params = createDefaultHttpParams();
}
this.ioReactor = new DefaultConnectingIOReactor(2, this.params);
this.sessmrg = new BasicIOSessionManager(this.ioReactor);
}
protected HttpParams createDefaultHttpParams() {
HttpParams params = new SyncBasicHttpParams();
params
.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 5000)
.setIntParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10000)
.setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
.setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true)
.setParameter(CoreProtocolPNames.USER_AGENT, "HttpComponents/1.1");
return params;
}
protected HttpProcessor createHttpProcessor() {
HttpRequestInterceptor[] interceptors = new HttpRequestInterceptor[] {
new RequestContent(),
new RequestTargetHost(),
new RequestConnControl(),
new RequestUserAgent(),
new RequestExpectContinue()
};
ImmutableHttpProcessor httpProcessor = new ImmutableHttpProcessor(interceptors);
return httpProcessor;
}
protected ConnectionReuseStrategy createConnectionReuseStrategy() {
return new DefaultConnectionReuseStrategy();
}
public IOSessionManager<HttpRoute> getSessionManager() {
return this.sessmrg;
}
private void doExecute() {
NHttpClientProtocolHandler handler = new NHttpClientProtocolHandler(
createHttpProcessor(),
createConnectionReuseStrategy(),
this.params);
IOEventDispatch ioEventDispatch = new InternalClientEventDispatch(handler, this.params);
try {
this.ioReactor.execute(ioEventDispatch);
} catch (IOException ex) {
this.log.error("I/O reactor terminated abnormally", ex);
}
}
public IOReactorStatus getStatus() {
return this.ioReactor.getStatus();
}
public synchronized void start() {
this.reactorThread = new Thread() {
@Override
public void run() {
doExecute();
}
};
this.reactorThread.start();
}
public synchronized void shutdown() throws InterruptedException {
this.sessmrg.shutdown();
try {
this.ioReactor.shutdown(5000);
} catch (IOException ex) {
this.log.error("I/O error shutting down", ex);
}
if (this.reactorThread != null) {
this.reactorThread.join();
}
}
public <T> Future<T> execute(
final HttpAsyncExchangeHandler<T> handler, final FutureCallback<T> callback) {
HttpRoute route = new HttpRoute(handler.getTarget());
HttpAsyncExchange<T> httpexchange = new HttpAsyncExchange<T>(
route, null, this.sessmrg, handler, callback);
return httpexchange.getResultFuture();
}
public Future<HttpResponse> execute(
final HttpHost target, final HttpRequest request, final FutureCallback<HttpResponse> callback) {
BasicHttpAsyncExchangeHandler handler = new BasicHttpAsyncExchangeHandler(target, request);
return execute(handler, callback);
}
}