/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. 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 com.cloudera.flume.handlers.syslog;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;
import com.cloudera.flume.conf.Context;
import com.cloudera.flume.conf.SinkFactory.SinkBuilder;
import com.cloudera.flume.core.Event;
import com.cloudera.flume.core.EventSink;
import com.google.common.base.Preconditions;
/**
* This generates a syslog output sink. This is used primarly for testing the
* syslogTcpSources, but could be used to actually write data to existing syslog
* servers.
*/
public class SyslogTcpSink extends EventSink.Base {
String dsthost;
int port;
Socket sock = null;
public SyslogTcpSink(String host, int port) {
Preconditions.checkNotNull(host);
Preconditions.checkArgument(port > 0);
this.dsthost = host;
this.port = port;
}
@Override
public void append(Event e) throws IOException, InterruptedException {
byte[] data = SyslogWireExtractor.formatEventToBytes(e);
sock.getOutputStream().write(data);
super.append(e);
}
@Override
public void close() throws IOException {
sock.close();
sock = null;
}
@Override
public void open() throws IOException {
sock = new Socket();
sock.connect(new InetSocketAddress(dsthost, port));
}
public static SinkBuilder builder() {
return new SinkBuilder() {
@Override
public EventSink build(Context context, String... argv) {
Preconditions.checkArgument(argv.length > 0 && argv.length <= 2,
"usage: syslogTcp(host[, port=514])");
int port = SyslogTcpSource.SYSLOG_TCP_PORT;
String host = argv[0];
if (argv.length > 1) {
port = Integer.parseInt(argv[1]);
}
return new SyslogTcpSink(host, port);
}
};
}
}