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Palantir open source project
/*
* 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 org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.io.FSError;
import org.apache.cassandra.net.IVerbHandler;
import org.apache.cassandra.net.MessageIn;
import org.apache.cassandra.net.MessagingService;
import org.apache.cassandra.tracing.Tracing;
public class TruncateVerbHandler implements IVerbHandler
{
private static final Logger logger = LoggerFactory.getLogger(TruncateVerbHandler.class);
public void doVerb(MessageIn message, int id)
{
Truncation t = message.payload;
Tracing.trace("Applying truncation of {}.{}", t.keyspace, t.columnFamily);
try
{
ColumnFamilyStore cfs = Keyspace.open(t.keyspace).getColumnFamilyStore(t.columnFamily);
cfs.truncateBlocking();
}
catch (Exception e)
{
logger.error("Error in truncation", e);
respondError(t, message);
if (FSError.findNested(e) != null)
throw FSError.findNested(e);
}
Tracing.trace("Enqueuing response to truncate operation to {}", message.from);
TruncateResponse response = new TruncateResponse(t.keyspace, t.columnFamily, true);
logger.trace("{} applied. Enqueuing response to {}@{} ", new Object[]{ t, id, message.from });
MessagingService.instance().sendReply(response.createMessage(), id, message.from);
}
private static void respondError(Truncation t, MessageIn truncateRequestMessage)
{
TruncateResponse response = new TruncateResponse(t.keyspace, t.columnFamily, false);
MessagingService.instance().sendOneWay(response.createMessage(), truncateRequestMessage.from);
}
}