package com.linkedin.databus2.core.seq;
/*
*
* Copyright 2013 LinkedIn Corp. All rights reserved
*
* Licensed 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.
*
*/
import java.io.IOException;
import com.linkedin.databus.core.util.InvalidConfigException;
import com.linkedin.databus2.core.DatabusException;
public class FileMaxSCNHandlerFactory implements SequenceNumberHandlerFactory
{
private final FileMaxSCNHandler.Config _configBuilder;
public FileMaxSCNHandlerFactory(FileMaxSCNHandler.Config configBuilder)
{
_configBuilder = configBuilder;
}
@Override
public MaxSCNReaderWriter createHandler(String id) throws DatabusException
{
FileMaxSCNHandler result;
synchronized (_configBuilder)
{
String saveKey = _configBuilder.getKey();
_configBuilder.setKey(saveKey + "_" + id);
FileMaxSCNHandler.StaticConfig config;
try
{
config = _configBuilder.build();
}
catch (InvalidConfigException ice)
{
throw new DatabusException("unable to create sequence number handler: " + ice.getMessage(),
ice);
}
try
{
result = FileMaxSCNHandler.create(config);
}
catch (IOException ioe)
{
throw new DatabusException("unable to create sequence number handler: " + ioe.getMessage(),
ioe);
}
_configBuilder.setKey(saveKey);
}
return result;
}
}