/** * 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() ); } }); } }