Examples of TxMetricsCollector

co.cask.tephra.metrics.TxMetricsCollector
Metrics Collector Class, to emit Transaction Related Metrics. Note: This default implementation is a no-op and doesn't emit any metrics
com.continuuity.tephra.metrics.TxMetricsCollector
Metrics Collector Class, to emit Transaction Related Metrics. Note: This default implementation is a no-op and doesn't emit any metrics

Examples of co.cask.tephra.metrics.TxMetricsCollector

  public void before() {
    conf.setInt(TxConstants.Manager.CFG_TX_CLEANUP_INTERVAL, 0); // no cleanup thread
    // todo should create two sets of tests, one with LocalFileTxStateStorage and one with InMemoryTxStateStorage
    txStateStorage = new InMemoryTransactionStateStorage();
    txManager = new TransactionManager
      (conf, txStateStorage, new TxMetricsCollector());
    txManager.startAndWait();
  }

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Examples of co.cask.tephra.metrics.TxMetricsCollector

  public void testTransactionCleanup() throws Exception {
    conf.setInt(TxConstants.Manager.CFG_TX_CLEANUP_INTERVAL, 3);
    conf.setInt(TxConstants.Manager.CFG_TX_TIMEOUT, 2);
    // using a new tx manager that cleans up
    TransactionManager txm = new TransactionManager
      (conf, new InMemoryTransactionStateStorage(), new TxMetricsCollector());
    txm.startAndWait();
    try {
      Assert.assertEquals(0, txm.getInvalidSize());
      Assert.assertEquals(0, txm.getCommittedSize());
      // start a transaction and leave it open

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Examples of co.cask.tephra.metrics.TxMetricsCollector

    TransactionStateStorage storage2 = null;
    TransactionStateStorage storage3 = null;
    try {
      storage = getStorage(conf);
      TransactionManager txManager = new TransactionManager
        (conf, storage, new TxMetricsCollector());
      txManager.startAndWait();


      // TODO: replace with new persistence tests
      final byte[] a = { 'a' };
      final byte[] b = { 'b' };
      // start a tx1, add a change A and commit
      Transaction tx1 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx1, Collections.singleton(a)));
      Assert.assertTrue(txManager.commit(tx1));
      // start a tx2 and add a change B
      Transaction tx2 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx2, Collections.singleton(b)));
      // start a tx3
      Transaction tx3 = txManager.startShort();
      // restart
      txManager.stopAndWait();
      TransactionSnapshot origState = txManager.getCurrentState();
      LOG.info("Orig state: " + origState);


      Thread.sleep(100);
      // starts a new tx manager
      storage2 = getStorage(conf);
      txManager = new TransactionManager(conf, storage2, new TxMetricsCollector());
      txManager.startAndWait();


      // check that the reloaded state matches the old
      TransactionSnapshot newState = txManager.getCurrentState();
      LOG.info("New state: " + newState);
      assertEquals(origState, newState);


      // commit tx2
      Assert.assertTrue(txManager.commit(tx2));
      // start another transaction, must be greater than tx3
      Transaction tx4 = txManager.startShort();
      Assert.assertTrue(tx4.getWritePointer() > tx3.getWritePointer());
      // tx1 must be visble from tx2, but tx3 and tx4 must not
      Assert.assertTrue(tx2.isVisible(tx1.getWritePointer()));
      Assert.assertFalse(tx2.isVisible(tx3.getWritePointer()));
      Assert.assertFalse(tx2.isVisible(tx4.getWritePointer()));
      // add same change for tx3
      Assert.assertFalse(txManager.canCommit(tx3, Collections.singleton(b)));
      // check visibility with new xaction
      Transaction tx5 = txManager.startShort();
      Assert.assertTrue(tx5.isVisible(tx1.getWritePointer()));
      Assert.assertTrue(tx5.isVisible(tx2.getWritePointer()));
      Assert.assertFalse(tx5.isVisible(tx3.getWritePointer()));
      Assert.assertFalse(tx5.isVisible(tx4.getWritePointer()));
      // can commit tx3?
      txManager.abort(tx3);
      txManager.abort(tx4);
      txManager.abort(tx5);
      // start new tx and verify its exclude list is empty
      Transaction tx6 = txManager.startShort();
      Assert.assertFalse(tx6.hasExcludes());
      txManager.abort(tx6);


      // now start 5 x claim size transactions
      Transaction tx = txManager.startShort();
      for (int i = 1; i < 50; i++) {
        tx = txManager.startShort();
      }
      origState = txManager.getCurrentState();


      Thread.sleep(100);
      // simulate crash by starting a new tx manager without a stopAndWait
      storage3 = getStorage(conf);
      txManager = new TransactionManager(conf, storage3, new TxMetricsCollector());
      txManager.startAndWait();


      // verify state again matches (this time should include WAL replay)
      newState = txManager.getCurrentState();
      assertEquals(origState, newState);

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Examples of co.cask.tephra.metrics.TxMetricsCollector

    TransactionStateStorage storage1 = null;
    TransactionStateStorage storage2 = null;
    try {
      storage1 = getStorage(conf);
      TransactionManager txManager = new TransactionManager
        (conf, storage1, new TxMetricsCollector());
      txManager.startAndWait();


      // TODO: replace with new persistence tests
      final byte[] a = { 'a' };
      final byte[] b = { 'b' };
      // start a tx1, add a change A and commit
      Transaction tx1 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx1, Collections.singleton(a)));
      Assert.assertTrue(txManager.commit(tx1));
      // start a tx2 and add a change B
      Transaction tx2 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx2, Collections.singleton(b)));
      // start a tx3
      Transaction tx3 = txManager.startShort();
      TransactionSnapshot origState = txManager.getCurrentState();
      LOG.info("Orig state: " + origState);


      // simulate a failure by starting a new tx manager without stopping first
      storage2 = getStorage(conf);
      txManager = new TransactionManager(conf, storage2, new TxMetricsCollector());
      txManager.startAndWait();


      // check that the reloaded state matches the old
      TransactionSnapshot newState = txManager.getCurrentState();
      LOG.info("New state: " + newState);

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Examples of co.cask.tephra.metrics.TxMetricsCollector

  private final Lock logReadLock = logLock.readLock();
  private final Lock logWriteLock = logLock.writeLock();




  public TransactionManager(Configuration config) {
    this(config, new NoOpTransactionStateStorage(new SnapshotCodecProvider(config)), new TxMetricsCollector());
  }

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Examples of com.continuuity.tephra.metrics.TxMetricsCollector

  private final Lock logReadLock = logLock.readLock();
  private final Lock logWriteLock = logLock.writeLock();




  public TransactionManager(Configuration config) {
    this(config, new NoOpTransactionStateStorage(new SnapshotCodecProvider(config)), new TxMetricsCollector());
  }

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Examples of com.continuuity.tephra.metrics.TxMetricsCollector

  private final Lock logReadLock = logLock.readLock();
  private final Lock logWriteLock = logLock.writeLock();




  public InMemoryTransactionManager(Configuration config) {
    this(config, new NoOpTransactionStateStorage(new SnapshotCodecProvider(config)), new TxMetricsCollector());
  }

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