| /** |
| * 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.hdds.scm.command; |
| |
| import com.google.common.base.Preconditions; |
| import org.apache.hadoop.hdds.protocol.proto |
| .StorageContainerDatanodeProtocolProtos.SCMCommandProto; |
| import org.apache.hadoop.hdds.protocol.proto |
| .StorageContainerDatanodeProtocolProtos.CommandStatus; |
| import org.apache.hadoop.hdds.scm.events.SCMEvents; |
| import org.apache.hadoop.hdds.scm.server.SCMDatanodeHeartbeatDispatcher |
| .CommandStatusReportFromDatanode; |
| import org.apache.hadoop.hdds.server.events.EventPublisher; |
| import org.apache.hadoop.hdds.server.events.EventHandler; |
| import org.apache.hadoop.hdds.server.events.IdentifiableEventPayload; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| |
| /** |
| * Handles CommandStatusReports from datanode. |
| */ |
| public class CommandStatusReportHandler implements |
| EventHandler<CommandStatusReportFromDatanode> { |
| |
| private static final Logger LOGGER = LoggerFactory |
| .getLogger(CommandStatusReportHandler.class); |
| |
| @Override |
| public void onMessage(CommandStatusReportFromDatanode report, |
| EventPublisher publisher) { |
| Preconditions.checkNotNull(report); |
| List<CommandStatus> cmdStatusList = report.getReport().getCmdStatusList(); |
| Preconditions.checkNotNull(cmdStatusList); |
| if (LOGGER.isTraceEnabled()) { |
| LOGGER.trace("Processing command status report for dn: {}", report |
| .getDatanodeDetails()); |
| } |
| |
| // Route command status to its watchers. |
| cmdStatusList.forEach(cmdStatus -> { |
| if (LOGGER.isTraceEnabled()) { |
| LOGGER.trace("Emitting command status for id:{} type: {}", cmdStatus |
| .getCmdId(), cmdStatus.getType()); |
| } |
| if (cmdStatus.getType() == SCMCommandProto.Type.deleteBlocksCommand) { |
| if (cmdStatus.getStatus() == CommandStatus.Status.EXECUTED) { |
| publisher.fireEvent(SCMEvents.DELETE_BLOCK_STATUS, |
| new DeleteBlockStatus(cmdStatus)); |
| } |
| } else { |
| LOGGER.debug("CommandStatus of type:{} not handled in " + |
| "CommandStatusReportHandler.", cmdStatus.getType()); |
| } |
| }); |
| } |
| |
| /** |
| * Wrapper event for CommandStatus. |
| */ |
| public static class CommandStatusEvent implements IdentifiableEventPayload { |
| private CommandStatus cmdStatus; |
| |
| CommandStatusEvent(CommandStatus cmdStatus) { |
| this.cmdStatus = cmdStatus; |
| } |
| |
| public CommandStatus getCmdStatus() { |
| return cmdStatus; |
| } |
| |
| @Override |
| public String toString() { |
| return "CommandStatusEvent:" + cmdStatus.toString(); |
| } |
| |
| @Override |
| public long getId() { |
| return cmdStatus.getCmdId(); |
| } |
| } |
| |
| /** |
| * Wrapper event for DeleteBlock Command. |
| */ |
| public static class DeleteBlockStatus extends CommandStatusEvent { |
| public DeleteBlockStatus(CommandStatus cmdStatus) { |
| super(cmdStatus); |
| } |
| } |
| |
| } |