/**
* 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.hive.hcatalog.api.repl.exim;
import org.apache.hive.hcatalog.api.HCatNotificationEvent;
import org.apache.hive.hcatalog.api.repl.Command;
import org.apache.hive.hcatalog.api.repl.ReplicationTask;
import org.apache.hive.hcatalog.api.repl.ReplicationUtils;
import org.apache.hive.hcatalog.api.repl.commands.ExportCommand;
import org.apache.hive.hcatalog.api.repl.commands.ImportCommand;
import org.apache.hive.hcatalog.common.HCatConstants;
import org.apache.hive.hcatalog.messaging.AlterPartitionMessage;
import java.util.Collections;
public class AlterPartitionReplicationTask extends ReplicationTask {
AlterPartitionMessage alterPartitionMessage = null;
public AlterPartitionReplicationTask(HCatNotificationEvent event) {
super(event);
validateEventType(event,HCatConstants.HCAT_ALTER_PARTITION_EVENT);
alterPartitionMessage = messageFactory.getDeserializer().getAlterPartitionMessage(event.getMessage());
}
public boolean needsStagingDirs(){
return true;
}
public Iterable<? extends Command> getSrcWhCommands() {
verifyActionable();
return Collections.singletonList(new ExportCommand(
alterPartitionMessage.getDB(),
alterPartitionMessage.getTable(),
alterPartitionMessage.getKeyValues(),
srcStagingDirProvider.getStagingDirectory(
ReplicationUtils.getUniqueKey(
getEvent().getEventId(),
alterPartitionMessage.getDB(),
alterPartitionMessage.getTable(),
alterPartitionMessage.getKeyValues())
),
true,
event.getEventId()
));
}
public Iterable<? extends Command> getDstWhCommands() {
verifyActionable();
final String dstDbName = ReplicationUtils.mapIfMapAvailable(alterPartitionMessage.getDB(), dbNameMapping);
final String dstTableName = ReplicationUtils.mapIfMapAvailable(alterPartitionMessage.getTable(), tableNameMapping);
return Collections.singletonList(new ImportCommand(
dstDbName,
dstTableName,
alterPartitionMessage.getKeyValues(),
dstStagingDirProvider.getStagingDirectory(
ReplicationUtils.getUniqueKey(
getEvent().getEventId(),
alterPartitionMessage.getDB(), // Note - important to retain the same key as the export
alterPartitionMessage.getTable(),
alterPartitionMessage.getKeyValues())
),
true,
event.getEventId()
));
}
}