/**
* 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;
import org.apache.hive.hcatalog.api.HCatNotificationEvent;
import org.apache.hive.hcatalog.api.repl.commands.NoopCommand;
import java.util.ArrayList;
import java.util.List;
/**
* Noop replication task - a replication task that is actionable,
* does not need any further info, and returns NoopCommands.
*
* Useful for testing, and also for tasks that need to be represented
* but actually do nothing.
*/
public class NoopReplicationTask extends ReplicationTask {
List<Command> noopReturn = null;
public NoopReplicationTask(HCatNotificationEvent event) {
super(event);
noopReturn = new ArrayList<Command>();
noopReturn.add(new NoopCommand(event.getEventId()));
}
@Override
public boolean needsStagingDirs() {
return false;
}
@Override
public boolean isActionable(){
return true;
}
/**
* Returns a list of commands to send to a hive driver on the source warehouse
* @return a list of commands to send to a hive driver on the source warehouse
*/
@Override
public Iterable<? extends Command> getSrcWhCommands() {
verifyActionable();
return noopReturn;
}
/**
* Returns a list of commands to send to a hive driver on the dest warehouse
* @return a list of commands to send to a hive driver on the dest warehouse
*/
@Override
public Iterable<? extends Command> getDstWhCommands() {
verifyActionable();
return noopReturn;
}
}