/*
* ====================================================================
* 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.nio.protocol;
import java.io.IOException;
import org.apache.http.ContentTooLongException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.annotation.ThreadSafe;
import org.apache.http.entity.ContentType;
import org.apache.http.nio.ContentDecoder;
import org.apache.http.nio.IOControl;
import org.apache.http.nio.entity.ContentBufferEntity;
import org.apache.http.nio.util.HeapByteBufferAllocator;
import org.apache.http.nio.util.SimpleInputBuffer;
import org.apache.http.protocol.HttpContext;
/**
* Basic implementation of {@link HttpAsyncResponseConsumer}. Please note that
* this consumer buffers response content in memory and should be used for
* relatively small response messages.
*
* @since 4.2
*/
@ThreadSafe
public class BasicAsyncResponseConsumer extends AbstractAsyncResponseConsumer<HttpResponse> {
private volatile HttpResponse response;
private volatile SimpleInputBuffer buf;
public BasicAsyncResponseConsumer() {
super();
}
@Override
protected void onResponseReceived(final HttpResponse response) throws IOException {
this.response = response;
HttpEntity entity = this.response.getEntity();
if (entity != null) {
long len = entity.getContentLength();
if (len > Integer.MAX_VALUE) {
throw new ContentTooLongException("Entity content is not long: " + len);
}
if (len < 0) {
len = 4096;
}
this.buf = new SimpleInputBuffer((int) len, new HeapByteBufferAllocator());
response.setEntity(new ContentBufferEntity(entity, this.buf));
}
}
@Override
protected void onEntityEnclosed(final HttpEntity entity, final ContentType contentType) {
}
@Override
protected void onContentReceived(
final ContentDecoder decoder, final IOControl ioctrl) throws IOException {
if (this.buf == null) {
throw new IllegalStateException("Content buffer is null");
}
this.buf.consumeContent(decoder);
}
@Override
protected void releaseResources() {
this.response = null;
this.buf = null;
}
@Override
protected HttpResponse buildResult(final HttpContext context) {
return this.response;
}
}