hadoop-ozone/insight/src/main/java/org/apache/hadoop/ozone/insight/datanode/RatisInsight.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
 *
 *      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.insight.datanode;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.hadoop.hdds.conf.OzoneConfiguration;
import org.apache.hadoop.hdds.protocol.DatanodeDetails;
import org.apache.hadoop.hdds.scm.client.ScmClient;
import org.apache.hadoop.hdds.scm.pipeline.Pipeline;
import org.apache.hadoop.ozone.insight.BaseInsightPoint;
import org.apache.hadoop.ozone.insight.Component;
import org.apache.hadoop.ozone.insight.Component.Type;
import org.apache.hadoop.ozone.insight.InsightPoint;
import org.apache.hadoop.ozone.insight.LoggerSource;

/**
 * Insight definition for datanode/pipline metrics.
 */
public class RatisInsight extends BaseInsightPoint implements InsightPoint {

  private OzoneConfiguration conf;

  public RatisInsight(OzoneConfiguration conf) {
    this.conf = conf;
  }

  @Override
  public List<LoggerSource> getRelatedLoggers(boolean verbose) {
    List<LoggerSource> result = new ArrayList<>();
    try {
      ScmClient scmClient = createScmClient(conf);
      Pipeline pipeline = scmClient.listPipelines()
          .stream()
          .filter(d -> d.getNodes().size() > 1)
          .findFirst()
          .get();
      for (DatanodeDetails datanode : pipeline.getNodes()) {
        Component dn =
            new Component(Type.DATANODE, datanode.getUuid().toString(),
                datanode.getHostName(), 9882);
        result
            .add(new LoggerSource(dn, "org.apache.ratis.server.impl",
                defaultLevel(verbose)));
      }
    } catch (IOException e) {
      throw new RuntimeException("Can't enumerate required logs", e);
    }

    return result;
  }

  @Override
  public String getDescription() {
    return "More information about one ratis datanode ring.";
  }

  @Override
  public boolean filterLog(Map<String, String> filters, String logLine) {
    return true;
  }
}