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/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/client/methods/HttpRequestBase.java $
* $Revision: 674186 $
* $Date: 2008-07-05 05:18:54 -0700 (Sat, 05 Jul 2008) $
*
* ====================================================================
* 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.client.methods;
import java.io.IOException;
import java.net.URI;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.http.ProtocolVersion;
import org.apache.http.RequestLine;
import org.apache.http.client.utils.CloneUtils;
import org.apache.http.conn.ClientConnectionRequest;
import org.apache.http.conn.ConnectionReleaseTrigger;
import org.apache.http.message.AbstractHttpMessage;
import org.apache.http.message.BasicRequestLine;
import org.apache.http.message.HeaderGroup;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
/**
* Basic implementation of an HTTP request that can be modified.
*
* @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
*
* @version $Revision: 674186 $
*
* @since 4.0
*/
public abstract class HttpRequestBase extends AbstractHttpMessage
implements HttpUriRequest, AbortableHttpRequest, Cloneable {
private Lock abortLock;
private boolean aborted;
private URI uri;
private ClientConnectionRequest connRequest;
private ConnectionReleaseTrigger releaseTrigger;
public HttpRequestBase() {
super();
this.abortLock = new ReentrantLock();
}
public abstract String getMethod();
public ProtocolVersion getProtocolVersion() {
return HttpProtocolParams.getVersion(getParams());
}
public URI getURI() {
return this.uri;
}
public RequestLine getRequestLine() {
String method = getMethod();
ProtocolVersion ver = getProtocolVersion();
URI uri = getURI();
String uritext = null;
if (uri != null) {
uritext = uri.toASCIIString();
}
if (uritext == null || uritext.length() == 0) {
uritext = "/";
}
return new BasicRequestLine(method, uritext, ver);
}
public void setURI(final URI uri) {
this.uri = uri;
}
public void setConnectionRequest(final ClientConnectionRequest connRequest)
throws IOException {
this.abortLock.lock();
try {
if (this.aborted) {
throw new IOException("Request already aborted");
}
this.releaseTrigger = null;
this.connRequest = connRequest;
} finally {
this.abortLock.unlock();
}
}
public void setReleaseTrigger(final ConnectionReleaseTrigger releaseTrigger)
throws IOException {
this.abortLock.lock();
try {
if (this.aborted) {
throw new IOException("Request already aborted");
}
this.connRequest = null;
this.releaseTrigger = releaseTrigger;
} finally {
this.abortLock.unlock();
}
}
public void abort() {
ClientConnectionRequest localRequest;
ConnectionReleaseTrigger localTrigger;
this.abortLock.lock();
try {
if (this.aborted) {
return;
}
this.aborted = true;
localRequest = connRequest;
localTrigger = releaseTrigger;
} finally {
this.abortLock.unlock();
}
// Trigger the callbacks outside of the lock, to prevent
// deadlocks in the scenario where the callbacks have
// their own locks that may be used while calling
// setReleaseTrigger or setConnectionRequest.
if (localRequest != null) {
localRequest.abortRequest();
}
if (localTrigger != null) {
try {
localTrigger.abortConnection();
} catch (IOException ex) {
// ignore
}
}
}
public boolean isAborted() {
return this.aborted;
}
@Override
public Object clone() throws CloneNotSupportedException {
HttpRequestBase clone = (HttpRequestBase) super.clone();
clone.abortLock = new ReentrantLock();
clone.aborted = false;
clone.releaseTrigger = null;
clone.connRequest = null;
clone.headergroup = (HeaderGroup) CloneUtils.clone(this.headergroup);
clone.params = (HttpParams) CloneUtils.clone(this.params);
return clone;
}
}
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