/**
* 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.cassandra.thrift;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.concurrent.ExecutorService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.thrift.TProcessorFactory;
import org.apache.thrift.protocol.TProtocolFactory;
import org.apache.thrift.server.TServer;
import org.apache.thrift.transport.TFramedTransport;
import org.apache.thrift.transport.TServerSocket;
import org.apache.thrift.transport.TTransportException;
import org.apache.thrift.transport.TTransportFactory;
/**
* This class supports two methods for creating a Cassandra node daemon,
* invoking the class's main method, and using the jsvc wrapper from
* commons-daemon, (for more information on using this class with the
* jsvc wrapper, see the
* <a href="http://commons.apache.org/daemon/jsvc.html">Commons Daemon</a>
* documentation).
*/
public class CassandraDaemon extends org.apache.cassandra.service.AbstractCassandraDaemon
{
private static Logger logger = LoggerFactory.getLogger(CassandraDaemon.class);
private ThriftServer server;
protected void startServer()
{
if (server == null)
{
server = new ThriftServer(listenAddr, listenPort);
server.start();
}
}
protected void stopServer()
{
if (server != null)
{
server.stopServer();
try
{
server.join();
}
catch (InterruptedException e)
{
logger.error("Interrupted while waiting thrift server to stop", e);
}
server = null;
}
}
public static void main(String[] args)
{
new CassandraDaemon().activate();
}
/**
* Simple class to run the thrift connection accepting code in separate
* thread of control.
*/
private static class ThriftServer extends Thread
{
private TServer serverEngine;
public ThriftServer(InetAddress listenAddr, int listenPort)
{
// now we start listening for clients
final CassandraServer cassandraServer = new CassandraServer();
Cassandra.Processor processor = new Cassandra.Processor(cassandraServer);
// Transport
TServerSocket tServerSocket = null;
try
{
tServerSocket = new TCustomServerSocket(new InetSocketAddress(listenAddr, listenPort),
DatabaseDescriptor.getRpcKeepAlive(),
DatabaseDescriptor.getRpcSendBufferSize(),
DatabaseDescriptor.getRpcRecvBufferSize());
}
catch (TTransportException e)
{
throw new RuntimeException(String.format("Unable to create thrift socket to %s:%s",
listenAddr, listenPort), e);
}
logger.info(String.format("Binding thrift service to %s:%s", listenAddr, listenPort));
// Protocol factory
TProtocolFactory tProtocolFactory = new TBinaryProtocol.Factory(true,
true,
DatabaseDescriptor.getThriftMaxMessageLength());
// Transport factory
TTransportFactory inTransportFactory, outTransportFactory;
if (DatabaseDescriptor.isThriftFramed())
{
int tFramedTransportSize = DatabaseDescriptor.getThriftFramedTransportSize();
inTransportFactory = new TFramedTransport.Factory(tFramedTransportSize);
outTransportFactory = new TFramedTransport.Factory(tFramedTransportSize);
logger.info("Using TFastFramedTransport with a max frame size of {} bytes.", tFramedTransportSize);
}
else
{
inTransportFactory = new TTransportFactory();
outTransportFactory = new TTransportFactory();
}
// ThreadPool Server
CustomTThreadPoolServer.Options options = new CustomTThreadPoolServer.Options();
options.minWorkerThreads = MIN_WORKER_THREADS;
ExecutorService executorService = new CleaningThreadPool(cassandraServer.clientState,
options.minWorkerThreads,
options.maxWorkerThreads);
serverEngine = new CustomTThreadPoolServer(new TProcessorFactory(processor),
tServerSocket,
inTransportFactory,
outTransportFactory,
tProtocolFactory,
tProtocolFactory,
options,
executorService);
}
public void run()
{
logger.info("Listening for thrift clients...");
serverEngine.serve();
}
public void stopServer()
{
logger.info("Stop listening to thrift clients");
serverEngine.stop();
}
}
}