hadoop-ozone/recon/src/main/java/org/apache/hadoop/ozone/recon/scm/ReconPipelineReportHandler.java

/*
 * 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.recon.scm;

import java.io.IOException;

import org.apache.hadoop.hdds.conf.ConfigurationSource;
import org.apache.hadoop.hdds.protocol.DatanodeDetails;
import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.PipelineReport;
import org.apache.hadoop.hdds.scm.pipeline.Pipeline;
import org.apache.hadoop.hdds.scm.pipeline.PipelineID;
import org.apache.hadoop.hdds.scm.pipeline.PipelineManager;
import org.apache.hadoop.hdds.scm.pipeline.PipelineNotFoundException;
import org.apache.hadoop.hdds.scm.pipeline.PipelineReportHandler;
import org.apache.hadoop.hdds.scm.safemode.SafeModeManager;
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 implementation of Pipeline Report handler.
 */
public class ReconPipelineReportHandler extends PipelineReportHandler {

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

  private StorageContainerServiceProvider scmServiceProvider;

  public ReconPipelineReportHandler(SafeModeManager scmSafeModeManager,
      PipelineManager pipelineManager,
      ConfigurationSource conf,
      StorageContainerServiceProvider scmServiceProvider) {
    super(scmSafeModeManager, pipelineManager, conf);
    this.scmServiceProvider = scmServiceProvider;
  }

  @Override
  protected void processPipelineReport(PipelineReport report,
      DatanodeDetails dn, EventPublisher publisher) throws IOException {
    ReconPipelineManager reconPipelineManager =
        (ReconPipelineManager)getPipelineManager();

    PipelineID pipelineID = PipelineID.getFromProtobuf(report.getPipelineID());
    if (!reconPipelineManager.containsPipeline(pipelineID)) {
      LOG.info("Unknown pipeline {}. Trying to get from SCM.", pipelineID);
      Pipeline pipelineFromScm =
          scmServiceProvider.getPipeline(report.getPipelineID());
      LOG.info("Adding new pipeline {} to Recon pipeline metadata.",
          pipelineFromScm);
      reconPipelineManager.addPipeline(pipelineFromScm);
    }

    Pipeline pipeline = null;
    try {
      pipeline = reconPipelineManager.getPipeline(pipelineID);
    } catch (PipelineNotFoundException ex) {
      LOG.warn("Pipeline {} not found in Recon.", pipelineID);
      return;
    }

    setReportedDatanode(pipeline, dn);
    setPipelineLeaderId(report, pipeline, dn);

    if (pipeline.getPipelineState() == Pipeline.PipelineState.ALLOCATED) {
      LOG.info("Pipeline {} {} reported by {}", pipeline.getFactor(),
          pipeline.getId(), dn);
      if (pipeline.isHealthy()) {
        reconPipelineManager.openPipeline(pipelineID);
      }
    }
  }
}