| /** |
| * 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.hadoop.hdds.scm.container; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| import org.apache.hadoop.hdds.protocol.DatanodeDetails; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.ContainerReportsProto; |
| import org.apache.hadoop.hdds.scm.container.common.helpers.ContainerInfo; |
| import org.apache.hadoop.hdds.scm.container.replication.ReplicationActivityStatus; |
| import org.apache.hadoop.hdds.scm.container.replication.ReplicationRequest; |
| import org.apache.hadoop.hdds.scm.events.SCMEvents; |
| import org.apache.hadoop.hdds.scm.exceptions.SCMException; |
| import org.apache.hadoop.hdds.scm.node.NodeManager; |
| import org.apache.hadoop.hdds.scm.node.states.ReportResult; |
| import org.apache.hadoop.hdds.scm.server.SCMDatanodeHeartbeatDispatcher.ContainerReportFromDatanode; |
| import org.apache.hadoop.hdds.server.events.EventHandler; |
| import org.apache.hadoop.hdds.server.events.EventPublisher; |
| |
| import com.google.common.base.Preconditions; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Handles container reports from datanode. |
| */ |
| public class ContainerReportHandler implements |
| EventHandler<ContainerReportFromDatanode> { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(ContainerReportHandler.class); |
| |
| private final NodeManager nodeManager; |
| |
| private final ContainerManager containerManager; |
| |
| private ContainerStateManager containerStateManager; |
| |
| private ReplicationActivityStatus replicationStatus; |
| |
| public ContainerReportHandler(ContainerManager containerManager, |
| NodeManager nodeManager, |
| ReplicationActivityStatus replicationActivityStatus) { |
| Preconditions.checkNotNull(containerManager); |
| Preconditions.checkNotNull(nodeManager); |
| Preconditions.checkNotNull(replicationActivityStatus); |
| this.containerStateManager = containerManager.getStateManager(); |
| this.nodeManager = nodeManager; |
| this.containerManager = containerManager; |
| this.replicationStatus = replicationActivityStatus; |
| } |
| |
| @Override |
| public void onMessage(ContainerReportFromDatanode containerReportFromDatanode, |
| EventPublisher publisher) { |
| |
| DatanodeDetails datanodeOrigin = |
| containerReportFromDatanode.getDatanodeDetails(); |
| |
| ContainerReportsProto containerReport = |
| containerReportFromDatanode.getReport(); |
| try { |
| |
| //update state in container db and trigger close container events |
| containerManager |
| .processContainerReports(datanodeOrigin, containerReport, false); |
| |
| Set<ContainerID> containerIds = containerReport.getReportsList().stream() |
| .map(StorageContainerDatanodeProtocolProtos |
| .ContainerInfo::getContainerID) |
| .map(ContainerID::new) |
| .collect(Collectors.toSet()); |
| |
| ReportResult<ContainerID> reportResult = nodeManager |
| .processContainerReport(datanodeOrigin.getUuid(), containerIds); |
| |
| //we have the report, so we can update the states for the next iteration. |
| nodeManager |
| .setContainersForDatanode(datanodeOrigin.getUuid(), containerIds); |
| |
| for (ContainerID containerID : reportResult.getMissingEntries()) { |
| containerStateManager |
| .removeContainerReplica(containerID, datanodeOrigin); |
| checkReplicationState(containerID, publisher); |
| } |
| |
| for (ContainerID containerID : reportResult.getNewEntries()) { |
| containerStateManager.addContainerReplica(containerID, datanodeOrigin); |
| checkReplicationState(containerID, publisher); |
| } |
| |
| } catch (IOException e) { |
| //TODO: stop all the replication? |
| LOG.error("Error on processing container report from datanode {}", |
| datanodeOrigin, e); |
| } |
| |
| } |
| |
| private void checkReplicationState(ContainerID containerID, |
| EventPublisher publisher) |
| throws SCMException { |
| ContainerInfo container = containerStateManager.getContainer(containerID); |
| |
| if (container == null) { |
| //warning unknown container |
| LOG.warn( |
| "Container is missing from containerStateManager. Can't request " |
| + "replication. {}", |
| containerID); |
| return; |
| } |
| if (container.isContainerOpen()) { |
| return; |
| } |
| |
| ReplicationRequest replicationState = |
| containerStateManager.checkReplicationState(containerID); |
| if (replicationState != null) { |
| if (replicationStatus.isReplicationEnabled()) { |
| publisher.fireEvent(SCMEvents.REPLICATE_CONTAINER, |
| replicationState); |
| } else { |
| LOG.warn( |
| "Over/under replicated container but the replication is not " |
| + "(yet) enabled: " |
| + replicationState.toString()); |
| } |
| } |
| |
| } |
| } |