anuengineer commented on a change in pull request #521: HDDS-2592 Add Datanode command to allow the datanode to persist its admin state URL: https://github.com/apache/hadoop-ozone/pull/521#discussion_r374853569
########## File path: hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/statemachine/commandhandler/SetNodeOperationalStateCommandHandler.java ########## @@ -0,0 +1,157 @@ +/** + * 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 com.google.common.base.Preconditions; +import org.apache.hadoop.hdds.protocol.DatanodeDetails; +import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos; +import org.apache.hadoop.hdds.scm.HddsServerUtil; +import org.apache.hadoop.hdds.scm.ScmConfigKeys; +import org.apache.hadoop.ozone.container.common.helpers.ContainerUtils; +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.apache.hadoop.ozone.protocol.commands.SetNodeOperationalStateCommand; +import org.apache.hadoop.util.Time; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.apache.hadoop.conf.Configuration; + +import org.apache.hadoop.hdds.protocol.proto. + StorageContainerDatanodeProtocolProtos.SCMCommandProto.Type; + +import java.io.File; +import java.io.IOException; +import java.util.concurrent.atomic.AtomicInteger; +import java.util.concurrent.atomic.AtomicLong; + + +/** + * Handle the SetNodeOperationalStateCommand sent from SCM to the datanode + * to persist the current operational state. + */ +public class SetNodeOperationalStateCommandHandler implements CommandHandler { + + private static final Logger LOG = + LoggerFactory.getLogger(SetNodeOperationalStateCommandHandler.class); + private final Configuration conf; + private final AtomicInteger invocationCount = new AtomicInteger(0); + private final AtomicLong totalTime = new AtomicLong(0); + + /** + * Set Node State command handler. + * + * @param conf - Configuration for the datanode. + */ + public SetNodeOperationalStateCommandHandler(Configuration conf) { + this.conf = conf; + } + + /** + * Handles a given SCM command. + * + * @param command - SCM Command + * @param container - Ozone Container. + * @param context - Current Context. + * @param connectionManager - The SCMs that we are talking to. + */ + @Override + public void handle(SCMCommand command, OzoneContainer container, + StateContext context, SCMConnectionManager connectionManager) { + long startTime = Time.monotonicNow(); + invocationCount.incrementAndGet(); + StorageContainerDatanodeProtocolProtos.SetNodeOperationalStateCommandProto + setNodeCmdProto = null; + + if (command.getType() != Type.setNodeOperationalStateCommand) { + LOG.warn("Skipping handling command, expected command " + + "type {} but found {}", + Type.setNodeOperationalStateCommand, command.getType()); + return; + } + SetNodeOperationalStateCommand setNodeCmd = + (SetNodeOperationalStateCommand) command; + setNodeCmdProto = setNodeCmd.getProto(); + DatanodeDetails dni = context.getParent().getDatanodeDetails(); + dni.setPersistedOpState(setNodeCmdProto.getNodeOperationalState()); + dni.setPersistedOpStateExpiryEpochSec( + setNodeCmd.getStateExpiryEpochSeconds()); + try { + persistDatanodeDetails(dni); + } catch (IOException ioe) { + LOG.error("Failed to persist the datanode state", ioe); + // TODO - this should probably be raised, but it will break the command Review comment: We can add this to the Dn reports if you want to propagate this back into SCM. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
