/**
* 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.db;
import java.io.*;
import java.util.concurrent.TimeoutException;
import java.net.InetAddress;
import java.nio.ByteBuffer;
import java.util.Collections;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.io.util.FastByteArrayInputStream;
import org.apache.cassandra.net.*;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.service.StorageProxy;
import org.apache.cassandra.thrift.ConsistencyLevel;
import org.apache.cassandra.thrift.UnavailableException;
public class CounterMutationVerbHandler implements IVerbHandler
{
private static Logger logger = LoggerFactory.getLogger(CounterMutationVerbHandler.class);
public void doVerb(Message message, String id)
{
byte[] bytes = message.getMessageBody();
FastByteArrayInputStream buffer = new FastByteArrayInputStream(bytes);
try
{
DataInputStream is = new DataInputStream(buffer);
CounterMutation cm = CounterMutation.serializer().deserialize(is, message.getVersion());
if (logger.isDebugEnabled())
logger.debug("Applying forwarded " + cm);
String localDataCenter = DatabaseDescriptor.getEndpointSnitch().getDatacenter(FBUtilities.getBroadcastAddress());
StorageProxy.applyCounterMutationOnLeader(cm, localDataCenter).get();
WriteResponse response = new WriteResponse(cm.getTable(), cm.key(), true);
Message responseMessage = WriteResponse.makeWriteResponseMessage(message, response);
MessagingService.instance().sendReply(responseMessage, id, message.getFrom());
}
catch (UnavailableException e)
{
// We check for UnavailableException in the coordinator not. It is
// hence reasonable to let the coordinator timeout in the very
// unlikely case we arrive here
}
catch (TimeoutException e)
{
// The coordinator node will have timeout itself so we let that goes
}
catch (IOException e)
{
logger.error("Error in counter mutation", e);
}
}
}