content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.server.ft.journal;
  
  import static org.junit.Assert.assertEquals;
  
  import alluxio.AlluxioURI;
  import alluxio.Constants;
  import alluxio.client.file.FileSystem;
  import alluxio.conf.Configuration;
  import alluxio.conf.PropertyKey;
  import alluxio.grpc.FileSystemMasterCommonPOptions;
  import alluxio.grpc.SetAttributePOptions;
  import alluxio.grpc.TtlAction;
  import alluxio.master.MultiMasterLocalAlluxioCluster;
  import alluxio.master.file.meta.TtlIntervalRule;
  import alluxio.testutils.BaseIntegrationTest;
  import alluxio.testutils.IntegrationTestUtils;
  import alluxio.util.CommonUtils;
  import alluxio.util.WaitForOptions;
  
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TestName;
  
  public class MultiMasterJournalTest extends BaseIntegrationTest {
    private MultiMasterLocalAlluxioCluster mCluster;
  
    @Rule
    public TtlIntervalRule mTtlRule = new TtlIntervalRule(200);
  
    @Rule
    public TestName mTestName = new TestName();
  
    @Before
    public void before() throws Exception {
      mCluster = new MultiMasterLocalAlluxioCluster(2, 0);
      mCluster.initConfiguration(
          IntegrationTestUtils.getTestName(getClass().getSimpleName(), mTestName.getMethodName()));
      Configuration.set(PropertyKey.MASTER_JOURNAL_CHECKPOINT_PERIOD_ENTRIES, 5);
      Configuration.set(PropertyKey.MASTER_JOURNAL_LOG_SIZE_BYTES_MAX, 100);
      mCluster.start();
    }
  
    @After
    public void after() throws Exception {
      mCluster.stop();
    }
  
    @Test
    public void testCheckpointReplay() throws Exception {
      triggerAndWaitForCheckpoint();
      mCluster.restartMasters();
      assertEquals("The cluster should remember the 10 files", 10,
          mCluster.getClient().listStatus(new AlluxioURI("/")).size());
    }
  
    @Test
    public void testTtl() throws Exception {
      // Test that ttls are still applied after restart.
      AlluxioURI file = new AlluxioURI("/file");
      mCluster.getClient().createFile(file).close();
      int ttl = 5 * Constants.SECOND_MS;
      mCluster.getClient().setAttribute(file, SetAttributePOptions.newBuilder()
          .setCommonOptions(FileSystemMasterCommonPOptions.newBuilder()
              .setTtl(ttl)
              .setTtlAction(TtlAction.DELETE))
          .build());
      triggerAndWaitForCheckpoint();
      mCluster.restartMasters();
      FileSystem client = mCluster.getClient();
      CommonUtils.waitFor("file to be deleted", () -> {
        try {
          return !client.exists(file);
        } catch (Exception e) {
          throw new RuntimeException(e);
        }
      }, WaitForOptions.defaults().setTimeoutMs(30 * Constants.SECOND_MS));
    }
  
    private void triggerAndWaitForCheckpoint() throws Exception {
      FileSystem client = mCluster.getClient();
      for (int i = 0; i < 10; i++) {
        client.createFile(new AlluxioURI("/triggerCheckpoint" + i)).close();
      }
      IntegrationTestUtils.waitForUfsJournalCheckpoint(Constants.FILE_SYSTEM_MASTER_NAME);
    }
  }
  