org.apache.http.nio.client.methods.BaseZeroCopyRequestProducer Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of httpasyncclient Show documentation
Show all versions of httpasyncclient Show documentation
Apache HttpComponents AsyncClient
The newest version!
/*
* ====================================================================
* 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
* .
*
*/
package org.apache.http.nio.client.methods;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.net.URI;
import java.nio.channels.FileChannel;
import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpException;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.client.utils.URIUtils;
import org.apache.http.entity.BasicHttpEntity;
import org.apache.http.entity.ContentType;
import org.apache.http.nio.ContentEncoder;
import org.apache.http.nio.ContentEncoderChannel;
import org.apache.http.nio.FileContentEncoder;
import org.apache.http.nio.IOControl;
import org.apache.http.nio.protocol.HttpAsyncRequestProducer;
import org.apache.http.protocol.HttpContext;
import org.apache.http.util.Args;
abstract class BaseZeroCopyRequestProducer implements HttpAsyncRequestProducer {
private final URI requestURI;
private final File file;
private final RandomAccessFile accessfile;
private final ContentType contentType;
private FileChannel fileChannel;
private long idx = -1;
protected BaseZeroCopyRequestProducer(
final URI requestURI,
final File file, final ContentType contentType) throws FileNotFoundException {
super();
Args.notNull(requestURI, "Request URI");
Args.notNull(file, "Source file");
this.requestURI = requestURI;
this.file = file;
this.accessfile = new RandomAccessFile(file, "r");
this.contentType = contentType;
}
private void closeChannel() throws IOException {
if (this.fileChannel != null) {
this.fileChannel.close();
this.fileChannel = null;
}
}
protected abstract HttpEntityEnclosingRequest createRequest(final URI requestURI, final HttpEntity entity);
@Override
public HttpRequest generateRequest() throws IOException, HttpException {
final BasicHttpEntity entity = new BasicHttpEntity();
entity.setChunked(false);
entity.setContentLength(this.file.length());
if (this.contentType != null) {
entity.setContentType(this.contentType.toString());
}
return createRequest(this.requestURI, entity);
}
@Override
public synchronized HttpHost getTarget() {
return URIUtils.extractHost(this.requestURI);
}
@Override
public synchronized void produceContent(
final ContentEncoder encoder, final IOControl ioControl) throws IOException {
if (this.fileChannel == null) {
this.fileChannel = this.accessfile.getChannel();
this.idx = 0;
}
final long transferred;
if (encoder instanceof FileContentEncoder) {
transferred = ((FileContentEncoder)encoder).transfer(
this.fileChannel, this.idx, Integer.MAX_VALUE);
} else {
transferred = this.fileChannel.transferTo(
this.idx, Integer.MAX_VALUE, new ContentEncoderChannel(encoder));
}
if (transferred > 0) {
this.idx += transferred;
}
if (this.idx >= this.fileChannel.size()) {
encoder.complete();
closeChannel();
}
}
@Override
public void requestCompleted(final HttpContext context) {
}
@Override
public void failed(final Exception ex) {
}
@Override
public boolean isRepeatable() {
return true;
}
@Override
public synchronized void resetRequest() throws IOException {
closeChannel();
}
@Override
public synchronized void close() throws IOException {
try {
this.accessfile.close();
} catch (final IOException ignore) {
}
}
}