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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 ch.boye.httpclientandroidlib.impl.execchain;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.SocketException;
import ch.boye.httpclientandroidlib.HttpEntity;
import ch.boye.httpclientandroidlib.HttpResponse;
import ch.boye.httpclientandroidlib.annotation.NotThreadSafe;
import ch.boye.httpclientandroidlib.conn.EofSensorInputStream;
import ch.boye.httpclientandroidlib.conn.EofSensorWatcher;
import ch.boye.httpclientandroidlib.entity.HttpEntityWrapper;
/**
* A wrapper class for {@link HttpEntity} enclosed in a response message.
*
* @since 4.3
*/
@NotThreadSafe
class ResponseEntityProxy extends HttpEntityWrapper implements EofSensorWatcher {
private final ConnectionHolder connHolder;
public static void enchance(final HttpResponse response, final ConnectionHolder connHolder) {
final HttpEntity entity = response.getEntity();
if (entity != null && entity.isStreaming() && connHolder != null) {
response.setEntity(new ResponseEntityProxy(entity, connHolder));
}
}
ResponseEntityProxy(final HttpEntity entity, final ConnectionHolder connHolder) {
super(entity);
this.connHolder = connHolder;
}
private void cleanup() {
if (this.connHolder != null) {
this.connHolder.abortConnection();
}
}
public void releaseConnection() throws IOException {
if (this.connHolder != null) {
try {
if (this.connHolder.isReusable()) {
this.connHolder.releaseConnection();
}
} finally {
cleanup();
}
}
}
@Override
public boolean isRepeatable() {
return false;
}
@Override
public InputStream getContent() throws IOException {
return new EofSensorInputStream(this.wrappedEntity.getContent(), this);
}
@Deprecated
@Override
public void consumeContent() throws IOException {
releaseConnection();
}
@Override
public void writeTo(final OutputStream outstream) throws IOException {
try {
this.wrappedEntity.writeTo(outstream);
releaseConnection();
} finally {
cleanup();
}
}
public boolean eofDetected(final InputStream wrapped) throws IOException {
try {
// there may be some cleanup required, such as
// reading trailers after the response body:
wrapped.close();
releaseConnection();
} finally {
cleanup();
}
return false;
}
public boolean streamClosed(final InputStream wrapped) throws IOException {
try {
final boolean open = connHolder != null && !connHolder.isReleased();
// this assumes that closing the stream will
// consume the remainder of the response body:
try {
wrapped.close();
releaseConnection();
} catch (final SocketException ex) {
if (open) {
throw ex;
}
}
} finally {
cleanup();
}
return false;
}
public boolean streamAbort(final InputStream wrapped) throws IOException {
cleanup();
return false;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("ResponseEntityProxy{");
sb.append(wrappedEntity);
sb.append('}');
return sb.toString();
}
}
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