/**
* 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 com.google.common.base.Function;
import com.google.common.collect.Iterables;
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.DropPartitionCommand;
import org.apache.hive.hcatalog.api.repl.commands.NoopCommand;
import org.apache.hive.hcatalog.common.HCatConstants;
import org.apache.hive.hcatalog.messaging.DropPartitionMessage;
import javax.annotation.Nullable;
import java.util.Collections;
import java.util.Map;
public class DropPartitionReplicationTask extends ReplicationTask {
DropPartitionMessage dropPartitionMessage = null;
public DropPartitionReplicationTask(HCatNotificationEvent event) {
super(event);
validateEventType(event, HCatConstants.HCAT_DROP_PARTITION_EVENT);
dropPartitionMessage = messageFactory.getDeserializer().getDropPartitionMessage(event.getMessage());
}
public boolean needsStagingDirs(){
return false;
}
public Iterable<? extends Command> getSrcWhCommands() {
verifyActionable();
return Collections.singletonList(new NoopCommand(event.getEventId()));
}
public Iterable<? extends Command> getDstWhCommands() {
verifyActionable();
final String dstDbName = ReplicationUtils.mapIfMapAvailable(dropPartitionMessage.getDB(), dbNameMapping);
final String dstTableName = ReplicationUtils.mapIfMapAvailable(dropPartitionMessage.getTable(), tableNameMapping);
return Iterables.transform(dropPartitionMessage.getPartitions(), new Function<Map<String, String>, Command>() {
@Override
public Command apply(@Nullable Map<String, String> ptnDesc) {
return new DropPartitionCommand(
dstDbName,
dstTableName,
ptnDesc,
true,
event.getEventId()
);
}
});
}
}