/**
* 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.
*/
package org.apache.cxf.transport.http.asyncclient;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.http.HttpException;
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.protocol.HttpAsyncRequestProducer;
import org.apache.http.protocol.HttpContext;
public class CXFHttpAsyncRequestProducer implements HttpAsyncRequestProducer {
private final CXFHttpRequest request;
private final SharedOutputBuffer buf;
private volatile CachedOutputStream content;
private volatile ByteBuffer buffer;
private volatile InputStream fis;
private volatile ReadableByteChannel chan;
public CXFHttpAsyncRequestProducer(final CXFHttpRequest request, final SharedOutputBuffer buf) {
super();
this.buf = buf;
this.request = request;
}
public HttpHost getTarget() {
URI uri = request.getURI();
if (uri == null) {
throw new IllegalStateException("Request URI is null");
}
if (!uri.isAbsolute()) {
throw new IllegalStateException("Request URI is not absolute");
}
return new HttpHost(uri.getHost(), uri.getPort(), uri.getScheme());
}
public HttpRequest generateRequest() throws IOException, HttpException {
return request;
}
public void produceContent(final ContentEncoder enc, final IOControl ioc) throws IOException {
if (content != null) {
if (buffer == null) {
if (content.getTempFile() == null) {
buffer = ByteBuffer.wrap(content.getBytes());
} else {
fis = content.getInputStream();
chan = (fis instanceof FileInputStream)
? ((FileInputStream)fis).getChannel() : Channels.newChannel(fis);
buffer = ByteBuffer.allocate(8 * 1024);
}
}
int i = -1;
buffer.rewind();
if (buffer.hasRemaining() && chan != null) {
i = chan.read(buffer);
buffer.flip();
}
enc.write(buffer);
if (!buffer.hasRemaining() && i == -1) {
enc.complete();
}
} else {
buf.produceContent(enc, ioc);
}
}
public void requestCompleted(final HttpContext context) {
if (fis != null) {
try {
fis.close();
} catch (IOException io) {
//ignore
}
chan = null;
fis = null;
}
buffer = null;
}
public void failed(final Exception ex) {
buf.shutdown();
}
public boolean isRepeatable() {
return request.getOutputStream().retransmitable();
}
public void resetRequest() throws IOException {
if (request.getOutputStream().retransmitable()) {
content = request.getOutputStream().getCachedStream();
}
}
@Override
public void close() throws IOException {
buf.close();
if (fis != null) {
try {
fis.close();
} catch (IOException io) {
//ignore
}
chan = null;
fis = null;
}
buffer = null;
}
}