Examples with VcrServer com.github.ambry.cloud.VcrServer used on opensource projects

Example 6 with VcrServer

use of com.github.ambry.cloud.VcrServer in project ambry by linkedin.

the class VcrBackupTest method singleNodeUpDownTestWithoutPersist.

/**
 * Test single VCR up and down without persisted token.
 */
@Test
public void singleNodeUpDownTestWithoutPersist() throws Exception {
    StrictMatchExternalViewVerifier helixBalanceVerifier = new StrictMatchExternalViewVerifier(zkConnectString, vcrClusterName, Collections.singleton(VcrTestUtil.helixResource), null);
    int numberOfBlobs = 20;
    sendBlobToDataNode(dataNode, numberOfBlobs);
    // Create in memory cloud destination.
    LatchBasedInMemoryCloudDestination latchBasedInMemoryCloudDestination = new LatchBasedInMemoryCloudDestination(new ArrayList<>(), mockCluster.getClusterMap());
    CloudDestinationFactory cloudDestinationFactory = new LatchBasedInMemoryCloudDestinationFactory(latchBasedInMemoryCloudDestination);
    // Start the VCR with token persistor off.
    Properties props = VcrTestUtil.createVcrProperties(dataNode.getDatacenterName(), vcrClusterName, zkConnectString, clusterMapPort, 12410, 12510, null, vcrHelixStateModelFactoryClass, true);
    props.setProperty("replication.persist.token.on.shutdown.or.replica.remove", "false");
    MockNotificationSystem vcrNotificationSystem = new MockNotificationSystem(mockCluster.getClusterMap());
    VcrServer vcrServer = VcrTestUtil.createVcrServer(new VerifiableProperties(props), mockCluster.getClusterAgentsFactory(), vcrNotificationSystem, cloudDestinationFactory);
    vcrServer.startup();
    makeSureHelixBalance(vcrServer, helixBalanceVerifier);
    final MockNotificationSystem vcrNotificationSystemCopy = vcrNotificationSystem;
    assertTrue("Blob count is not correct.", TestUtils.checkAndSleep(numberOfBlobs, () -> vcrNotificationSystemCopy.getBlobIds().size(), 400));
    vcrServer.shutdown();
    assertTrue("VCR server shutdown timeout.", vcrServer.awaitShutdown(5000));
    // Error metrics should be zero.
    Assert.assertEquals("Error count should be zero", 0, vcrServer.getVcrReplicationManager().getVcrMetrics().addPartitionErrorCount.getCount());
    Assert.assertEquals("Error count should be zero", 0, vcrServer.getVcrReplicationManager().getVcrMetrics().removePartitionErrorCount.getCount());
    assertEquals("No token is expected.", 0, latchBasedInMemoryCloudDestination.getTokenMap().size());
    // Start VCR again with same cloud destination
    vcrNotificationSystem = new MockNotificationSystem(mockCluster.getClusterMap());
    vcrServer = VcrTestUtil.createVcrServer(new VerifiableProperties(props), mockCluster.getClusterAgentsFactory(), vcrNotificationSystem, cloudDestinationFactory);
    vcrServer.startup();
    makeSureHelixBalance(vcrServer, helixBalanceVerifier);
    // Because same cloud destination is used, getMissingKey() will filter out all keys.
    assertEquals("Number of blobs doesn't match", 0, vcrNotificationSystem.getBlobIds().size());
    vcrServer.shutdown();
    assertTrue("VCR server shutdown timeout.", vcrServer.awaitShutdown(5000));
    // Error metrics should be zero.
    Assert.assertEquals("Error count should be zero", 0, vcrServer.getVcrReplicationManager().getVcrMetrics().addPartitionErrorCount.getCount());
    Assert.assertEquals("Error count should be zero", 0, vcrServer.getVcrReplicationManager().getVcrMetrics().removePartitionErrorCount.getCount());
    // Start VCR again with different cloud destination
    latchBasedInMemoryCloudDestination = new LatchBasedInMemoryCloudDestination(new ArrayList<>(), mockCluster.getClusterMap());
    cloudDestinationFactory = new LatchBasedInMemoryCloudDestinationFactory(latchBasedInMemoryCloudDestination);
    vcrNotificationSystem = new MockNotificationSystem(mockCluster.getClusterMap());
    vcrServer = VcrTestUtil.createVcrServer(new VerifiableProperties(props), mockCluster.getClusterAgentsFactory(), vcrNotificationSystem, cloudDestinationFactory);
    vcrServer.startup();
    makeSureHelixBalance(vcrServer, helixBalanceVerifier);
    // Because same cloud destination is not used and no token persisted, everything will be backed again.
    final MockNotificationSystem vcrNotificationSystemCopy2 = vcrNotificationSystem;
    assertTrue("Blob count is not correct.", TestUtils.checkAndSleep(numberOfBlobs, () -> vcrNotificationSystemCopy2.getBlobIds().size(), 200));
    vcrServer.shutdown();
    assertTrue("VCR shutdown timeout.", vcrServer.awaitShutdown(5000));
    // Error metrics should be zero.
    Assert.assertEquals("Error count should be zero", 0, vcrServer.getVcrReplicationManager().getVcrMetrics().addPartitionErrorCount.getCount());
    Assert.assertEquals("Error count should be zero", 0, vcrServer.getVcrReplicationManager().getVcrMetrics().removePartitionErrorCount.getCount());
}