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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.
*/
package org.apache.spark.network.netty;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelOption;
import io.netty.channel.oio.OioEventLoopGroup;
import io.netty.channel.socket.oio.OioSocketChannel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
class FileClient {
private Logger LOG = LoggerFactory.getLogger(this.getClass().getName());
private FileClientHandler handler = null;
private Channel channel = null;
private Bootstrap bootstrap = null;
private int connectTimeout = 60*1000; // 1 min
public FileClient(FileClientHandler handler, int connectTimeout) {
this.handler = handler;
this.connectTimeout = connectTimeout;
}
public void init() {
bootstrap = new Bootstrap();
bootstrap.group(new OioEventLoopGroup())
.channel(OioSocketChannel.class)
.option(ChannelOption.SO_KEEPALIVE, true)
.option(ChannelOption.TCP_NODELAY, true)
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, connectTimeout)
.handler(new FileClientChannelInitializer(handler));
}
public void connect(String host, int port) {
try {
// Start the connection attempt.
channel = bootstrap.connect(host, port).sync().channel();
// ChannelFuture cf = channel.closeFuture();
//cf.addListener(new ChannelCloseListener(this));
} catch (InterruptedException e) {
close();
}
}
public void waitForClose() {
try {
channel.closeFuture().sync();
} catch (InterruptedException e) {
LOG.warn("FileClient interrupted", e);
}
}
public void sendRequest(String file) {
//assert(file == null);
//assert(channel == null);
channel.write(file + "\r\n");
}
public void close() {
if(channel != null) {
channel.close();
channel = null;
}
if ( bootstrap!=null) {
bootstrap.shutdown();
bootstrap = null;
}
}
}
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