/*
* ====================================================================
* 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 org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.nio.ContentEncoder;
import org.apache.http.nio.IOControl;
import org.apache.http.nio.client.HttpAsyncRequestProducer;
import org.apache.http.nio.entity.NHttpEntityWrapper;
import org.apache.http.nio.entity.ProducingNHttpEntity;
public class BasicHttpAsyncRequestProducer implements HttpAsyncRequestProducer {
private final HttpHost target;
private final HttpRequest request;
private volatile ProducingNHttpEntity contentProducingEntity;
public BasicHttpAsyncRequestProducer(final HttpHost target, final HttpRequest request) {
super();
if (target == null) {
throw new IllegalArgumentException("Target host may not be null");
}
if (request == null) {
throw new IllegalArgumentException("HTTP request may not be null");
}
this.target = target;
this.request = request;
}
public HttpRequest generateRequest() {
return this.request;
}
public HttpHost getTarget() {
return this.target;
}
protected ProducingNHttpEntity createProducingHttpEntity(
final HttpRequest request) throws IOException {
HttpEntity entity = null;
if (request instanceof HttpEntityEnclosingRequest) {
entity = ((HttpEntityEnclosingRequest) request).getEntity();
}
if (entity != null) {
if (entity instanceof ProducingNHttpEntity) {
return (ProducingNHttpEntity) entity;
} else {
return new NHttpEntityWrapper(entity);
}
} else {
return null;
}
}
private ProducingNHttpEntity getProducingHttpEntity() throws IOException {
if (this.contentProducingEntity == null) {
this.contentProducingEntity = createProducingHttpEntity(this.request);
if (this.contentProducingEntity == null) {
throw new IllegalStateException("Content producer is null");
}
}
return this.contentProducingEntity;
}
public synchronized void produceContent(
final ContentEncoder encoder, final IOControl ioctrl) throws IOException {
ProducingNHttpEntity producer = getProducingHttpEntity();
producer.produceContent(encoder, ioctrl);
}
public synchronized boolean isRepeatable() {
if (this.request instanceof HttpEntityEnclosingRequest) {
HttpEntity entity = ((HttpEntityEnclosingRequest) this.request).getEntity();
if (entity != null) {
return entity.isRepeatable();
} else {
return true;
}
} else {
return true;
}
}
public synchronized void resetRequest() {
if (this.contentProducingEntity != null) {
try {
this.contentProducingEntity.finish();
this.contentProducingEntity = null;
} catch (IOException ex) {
}
}
}
}