/*
* ====================================================================
* 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.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ThreadFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.client.protocol.RequestClientConnControl;
import org.apache.http.concurrent.BasicFuture;
import org.apache.http.concurrent.FutureCallback;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.client.DefaultConnectionKeepAliveStrategy;
import org.apache.http.nio.conn.NHttpClientConnectionManager;
import org.apache.http.nio.protocol.HttpAsyncRequestProducer;
import org.apache.http.nio.protocol.HttpAsyncResponseConsumer;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.protocol.ImmutableHttpProcessor;
import org.apache.http.protocol.RequestContent;
import org.apache.http.protocol.RequestTargetHost;
import org.apache.http.protocol.RequestUserAgent;
import org.apache.http.util.Asserts;
import org.apache.http.util.VersionInfo;
class MinimalHttpAsyncClient extends CloseableHttpAsyncClientBase {
private final Log log = LogFactory.getLog(getClass());
private final NHttpClientConnectionManager connmgr;
private final InternalClientExec execChain;
public MinimalHttpAsyncClient(
final NHttpClientConnectionManager connmgr,
final ThreadFactory threadFactory) {
super(connmgr, threadFactory);
this.connmgr = connmgr;
final HttpProcessor httpProcessor = new ImmutableHttpProcessor(new RequestContent(),
new RequestTargetHost(),
new RequestClientConnControl(),
new RequestUserAgent(VersionInfo.getUserAgent(
"Apache-HttpAsyncClient", "org.apache.http.nio.client", getClass())));
this.execChain = new MinimalClientExec(
connmgr,
httpProcessor,
DefaultConnectionReuseStrategy.INSTANCE,
DefaultConnectionKeepAliveStrategy.INSTANCE);
}
public MinimalHttpAsyncClient(
final NHttpClientConnectionManager connmgr) {
this(connmgr, Executors.defaultThreadFactory());
}
public <T> Future<T> execute(
final HttpAsyncRequestProducer requestProducer,
final HttpAsyncResponseConsumer<T> responseConsumer,
final HttpContext context,
final FutureCallback<T> callback) {
final Status status = getStatus();
Asserts.check(status == Status.ACTIVE, "Request cannot be executed; " +
"I/O reactor status: %s", status);
final BasicFuture<T> future = new BasicFuture<T>(callback);
final HttpClientContext localcontext = HttpClientContext.adapt(
context != null ? context : new BasicHttpContext());
@SuppressWarnings("resource")
final DefaultClientExchangeHandlerImpl<T> handler = new DefaultClientExchangeHandlerImpl<T>(
this.log,
requestProducer,
responseConsumer,
localcontext,
future,
this.connmgr,
this.execChain);
try {
handler.start();
} catch (final Exception ex) {
handler.failed(ex);
}
return future;
}
}