/*
 * 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.ozone.recon.scm;

import java.util.List;
import java.util.Optional;
import org.apache.hadoop.hdds.protocol.DatanodeDetails;
import org.apache.hadoop.hdds.protocol.proto.HddsProtos.Node;
import org.apache.hadoop.hdds.scm.container.ContainerManager;
import org.apache.hadoop.hdds.scm.node.DeadNodeHandler;
import org.apache.hadoop.hdds.scm.node.NodeManager;
import org.apache.hadoop.hdds.scm.pipeline.PipelineManager;
import org.apache.hadoop.hdds.server.events.EventPublisher;
import org.apache.hadoop.ozone.recon.spi.StorageContainerServiceProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Recon's handling of Dead node.
 */
public class ReconDeadNodeHandler extends DeadNodeHandler {

  private static final Logger LOG =
      LoggerFactory.getLogger(ReconDeadNodeHandler.class);

  private StorageContainerServiceProvider scmClient;
  private ReconScmTask containerHealthTask;
  private PipelineSyncTask pipelineSyncTask;

  public ReconDeadNodeHandler(NodeManager nodeManager,
                              PipelineManager pipelineManager,
                              ContainerManager containerManager,
                              StorageContainerServiceProvider scmClient,
                              ReconScmTask containerHealthTask,
                              PipelineSyncTask pipelineSyncTask) {
    super(nodeManager, pipelineManager, containerManager);
    this.scmClient = scmClient;
    this.containerHealthTask = containerHealthTask;
    this.pipelineSyncTask = pipelineSyncTask;
  }

  @Override
  public void onMessage(final DatanodeDetails datanodeDetails,
                        final EventPublisher publisher) {

    super.onMessage(datanodeDetails, publisher);
    ReconNodeManager nodeManager = (ReconNodeManager) getNodeManager();
    try {
      List<Node> nodes = scmClient.getNodes();
      Optional<Node> matchedDn = nodes.stream()
              .filter(n -> n.getNodeID().getUuid()
                  .equals(datanodeDetails.getUuidString()))
              .findAny();

      if (matchedDn.isPresent()) {
        nodeManager.updateNodeOperationalStateFromScm(matchedDn.get(),
            datanodeDetails);
      } else {
        LOG.warn("Node {} has reached DEAD state, but SCM does not have " +
            "information about it.", datanodeDetails);
      }
      containerHealthTask.initializeAndRunTask();
      pipelineSyncTask.initializeAndRunTask();
    } catch (Exception ioEx) {
      LOG.error("Error trying to verify Node operational state from SCM.",
          ioEx);
    }
  }
}
