ChenSammi commented on code in PR #3701: URL: https://github.com/apache/ozone/pull/3701#discussion_r952197202
########## hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/statemachine/commandhandler/DiskBalancerCommandHandler.java: ########## @@ -0,0 +1,112 @@ +/** + * 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 + * <p> + * http://www.apache.org/licenses/LICENSE-2.0 + * <p> + * 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.hadoop.ozone.container.common.statemachine.commandhandler; + +import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMCommandProto; +import org.apache.hadoop.hdds.scm.storage.DiskBalancerConfiguration; +import org.apache.hadoop.ozone.container.common.statemachine.SCMConnectionManager; +import org.apache.hadoop.ozone.container.common.statemachine.StateContext; +import org.apache.hadoop.ozone.container.ozoneimpl.OzoneContainer; +import org.apache.hadoop.ozone.protocol.commands.SCMCommand; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.concurrent.atomic.AtomicLong; + +/** + * Handler for DiskBalancer command received from SCM. + */ +public class DiskBalancerCommandHandler implements CommandHandler { + + private static final Logger LOG = + LoggerFactory.getLogger(DiskBalancerCommandHandler.class); + + private AtomicLong invocationCount = new AtomicLong(0); + private long totalTime; + + /** + * Constructs a diskBalancerCommand handler. + */ + public DiskBalancerCommandHandler() { + } + + /** + * Handles a given SCM command. + * + * @param command - SCM Command + * @param ozoneContainer - Ozone Container. + * @param context - Current Context. + * @param connectionManager - The SCMs that we are talking to. + */ + @Override + public void handle(SCMCommand command, OzoneContainer ozoneContainer, + StateContext context, SCMConnectionManager connectionManager) { + invocationCount.incrementAndGet(); + // TODO: Do start/stop/update operation + } + + /** + * Returns the command type that this command handler handles. + * + * @return Type + */ + @Override + public SCMCommandProto.Type getCommandType() { + return SCMCommandProto.Type.diskBalancerCommand; + } + + /** + * Returns number of times this handler has been invoked. + * + * @return int + */ + @Override + public int getInvocationCount() { + return (int)invocationCount.get(); + } + + /** + * Returns the average time this function takes to run. + * + * @return long + */ + @Override + public long getAverageRunTime() { + if (invocationCount.get() > 0) { + return totalTime / invocationCount.get(); + } + return 0; + } + + @Override + public int getQueuedCount() { + return 0; + } + + private void startDiskBalancer(DiskBalancerConfiguration configuration) { + // Todo: add implementation to start DiskBalancer + } + + private void stopDiskBalancer() { + // Todo: add implementation to stop DiskBalancer + } + + private void updateDiskBalancerConfiguration(DiskBalancerConfiguration Review Comment: updateDiskBalancerConfiguration -> updateDiskBalancer -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
