ratis-examples/src/test/java/org/apache/ratis/examples/arithmetic/TestArithmeticLogDump.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
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package org.apache.ratis.examples.arithmetic;

import java.io.IOException;
import java.util.List;
import java.util.concurrent.TimeUnit;

import org.apache.ratis.BaseTest;
import org.apache.ratis.server.impl.MiniRaftCluster;
import org.apache.ratis.RaftTestUtil;
import org.apache.ratis.conf.RaftProperties;
import org.apache.ratis.server.RaftServer;
import org.apache.ratis.server.RaftServerConfigKeys;
import org.apache.ratis.server.raftlog.segmented.LogSegmentPath;
import org.apache.ratis.server.simulation.MiniRaftClusterWithSimulatedRpc;
import org.apache.ratis.statemachine.impl.SimpleStateMachine4Testing;
import org.apache.ratis.statemachine.StateMachine;
import org.apache.ratis.tools.ParseRatisLog;
import org.apache.ratis.util.Slf4jUtils;
import org.apache.ratis.util.TimeDuration;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.slf4j.event.Level;

public class TestArithmeticLogDump extends BaseTest {
  static {
    Slf4jUtils.setLogLevel(RaftServer.Division.LOG, Level.DEBUG);
  }

  public static final int NUM_SERVERS = 1;

  protected static final RaftProperties PROPERTIES = new RaftProperties();

  private final MiniRaftClusterWithSimulatedRpc cluster = MiniRaftClusterWithSimulatedRpc
      .FACTORY.newCluster(NUM_SERVERS, getProperties());

  public RaftProperties getProperties() {
    RaftServerConfigKeys.Rpc
        .setSlownessTimeout(PROPERTIES, TimeDuration.valueOf(1, TimeUnit.SECONDS));
    PROPERTIES.setClass(MiniRaftCluster.STATEMACHINE_CLASS_KEY,
        SimpleStateMachine4Testing.class, StateMachine.class);
    return PROPERTIES;
  }

  @BeforeEach
  public void setup() throws IOException {
    Assertions.assertNull(cluster.getLeader());
    cluster.start();
  }

  @AfterEach
  public void tearDown() {
    if (cluster != null) {
      cluster.shutdown();
    }
  }

  @Test
  public void testLogDump() throws Exception {
    final RaftServer.Division leaderServer = RaftTestUtil.waitForLeader(cluster);
    final List<LogSegmentPath> files = LogSegmentPath.getLogSegmentPaths(leaderServer.getRaftStorage());
    Assertions.assertEquals(1, files.size());
    cluster.shutdown();

    ParseRatisLog.Builder builder =  new ParseRatisLog.Builder();
    ParseRatisLog prl = builder.setSegmentFile(files.get(0).getPath().toFile())
        .build();

    prl.dumpSegmentFile();
  }
}