/**
   * Test Peek. This will only work with an embedded setup.
   *
   * @throws Exception
   */
  @Test
  public void metricsEverywherePeek() throws Exception {

    Topology t = newTopology();
    Graph g = t.graph();

    TStream<String> s = t.strings("a", "b", "c");
    List<String> peekedValues = new ArrayList<>();
    TStream<String> speek = s.peek(tuple -> peekedValues.add(tuple));
    speek.sink(tuple -> System.out.print("."));

    Collection<Vertex<? extends Oplet<?, ?>, ?, ?>> vertices = g.getVertices();
    assertEquals(3, vertices.size());

    Collection<Edge> edges = g.getEdges();
    assertEquals(2, edges.size());

    Metrics.counter(t);

    printGraph(g);

    // One single counter inserted after the peek
    vertices = g.getVertices();
    assertEquals(4, vertices.size());

    edges = g.getEdges();
    assertEquals(3, edges.size());
  }
  /*
   * Test that Metrics are automatically unregistered after the job is closed
   */
  @Test
  public void automaticMetricCleanup1() throws Exception {
    // Declare topology with custom metric oplet
    Topology t = newTopology();
    AtomicInteger n = new AtomicInteger(0);
    TStream<Integer> ints = t.poll(() -> n.incrementAndGet(), 10, TimeUnit.MILLISECONDS);
    ints.pipe(new TestOplet<Integer>());

    // Submit job
    Future<? extends Job> fj = getSubmitter().submit(t);
    Job job = fj.get();
    Thread.sleep(TimeUnit.MILLISECONDS.toMillis(50));

    // At least one tuple was processed
    int tupleCount = n.get();
    assertTrue("Expected more tuples than " + tupleCount, tupleCount > 0);

    // Each test oplet registers two metrics
    Map<String, Metric> all = metricRegistry.getMetrics();
    assertEquals(2, all.size());

    // After close all metrics have been unregistered
    job.stateChange(Job.Action.CLOSE);
    assertEquals(0, all.size());
  }
  @Test
  public void metricsEverywhereFanOut() {

    Topology t = newTopology();
    Graph g = t.graph();

    /*                   -- OP_3 (Sink)
     *                  /
     * OP_0 -- FanOut ----- OP_4 (Sink)
     */
    TStream<Integer> d = integers(t, 1, 2, 3);
    d.sink(tuple -> System.out.print("."));
    d.sink(tuple -> System.out.print("@"));

    // Insert counter metrics into all the topology streams
    Metrics.counter(t);

    printGraph(g);

    Collection<Vertex<? extends Oplet<?, ?>, ?, ?>> vertices = g.getVertices();
    assertEquals(5, vertices.size());

    Collection<Edge> edges = g.getEdges();
    assertEquals(4, edges.size());
  }
  public static void main(String[] args) throws Exception {
    DevelopmentProvider dtp = new DevelopmentProvider();

    Topology t = dtp.newTopology("DevelopmentSampleJobMXBean");

    Random r = new Random();

    TStream<Double> d = t.poll(() -> r.nextGaussian(), 100, TimeUnit.MILLISECONDS);

    d.sink(tuple -> System.out.print("."));

    dtp.submit(t);

    System.out.println(dtp.getServices().getService(HttpServer.class).getConsoleUrl());

    MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();

    StringBuffer sbuf = new StringBuffer();
    sbuf.append(DevelopmentProvider.JMX_DOMAIN);
    sbuf.append(":interface=");
    sbuf.append(ObjectName.quote("quarks.execution.mbeans.JobMXBean"));
    sbuf.append(",type=");
    sbuf.append(ObjectName.quote("job"));
    sbuf.append(",*");

    System.out.println("Looking for MBeans of type job: " + sbuf.toString());

    ObjectName jobObjName = new ObjectName(sbuf.toString());
    Set<ObjectInstance> jobInstances = mBeanServer.queryMBeans(jobObjName, null);
    Iterator<ObjectInstance> jobIterator = jobInstances.iterator();

    while (jobIterator.hasNext()) {
      ObjectInstance jobInstance = jobIterator.next();
      ObjectName objectName = jobInstance.getObjectName();

      String jobId = (String) mBeanServer.getAttribute(objectName, "Id");
      String jobName = (String) mBeanServer.getAttribute(objectName, "Name");
      String jobCurState = (String) mBeanServer.getAttribute(objectName, "CurrentState");
      String jobNextState = (String) mBeanServer.getAttribute(objectName, "NextState");
      String jobHealth = (String) mBeanServer.getAttribute(objectName, "Health");
      String jobLastError = (String) mBeanServer.getAttribute(objectName, "LastError");

      System.out.println(
          "Found a job with JobId: "
              + jobId
              + " Name: "
              + jobName
              + " CurrentState: "
              + jobCurState
              + " NextState: "
              + jobNextState
              + " Health: "
              + jobHealth
              + " LastError: \""
              + jobLastError
              + "\"");
    }
  }
  private void _testFanoutWithPeek(boolean after) throws Exception {
    Topology t = newTopology();
    Graph g = t.graph();

    /*                            -- Filter -- Sink(.)
     *                           /
     * Source -- Peek -- FanOut ---- Modify -- Sink(@)
     *
     */
    TStream<Integer> d = integers(t, 1, 2, 3);
    List<Integer> peekedValues = new ArrayList<>();

    if (!after) d.peek(tuple -> peekedValues.add(tuple));

    TStream<Integer> df = d.filter(tuple -> tuple.intValue() > 0);
    TStream<Integer> dm = d.modify(tuple -> new Integer(tuple.intValue() + 1));

    if (after) d.peek(tuple -> peekedValues.add(tuple));

    df.sink(tuple -> System.out.print("."));
    dm.sink(tuple -> System.out.print("@"));

    assertEquals(7, g.getVertices().size());
    assertEquals(6, g.getEdges().size());

    // Insert counter metrics into all the streams
    Metrics.counter(t);

    printGraph(g);

    assertEquals(10, g.getVertices().size());
    assertEquals(9, g.getEdges().size());
  }
  // Apply Metrics on all streams, graph with split oplet and Metric oplet
  @Test
  public void metricsEverywhereSplit() throws Exception {

    /*                        -- OP_2 (Counter) --- OP_3 (Sink)
     *                       /
     * OP_0 -- OP_1(Split) ----- OP_4 (Sink)
     *                       \
     *                        -- OP_5 (Sink)
     */
    Topology t = newTopology();
    Graph g = t.graph();

    // Source
    TStream<Integer> d = integers(t, 1, 2, 3);

    // Split
    List<TStream<Integer>> splits =
        d.split(
            3,
            tuple -> {
              switch (tuple.intValue()) {
                case 0:
                  return 0;
                case 1:
                  return 1;
                default:
                  return 2;
              }
            });

    // Insert counter metric for the zeroes stream
    Metrics.counter(splits.get(0)).sink(tuple -> System.out.print("."));

    splits.get(1).sink(tuple -> System.out.print("#"));
    splits.get(2).sink(tuple -> System.out.print("@"));

    // Insert counter metrics into all the topology streams
    Metrics.counter(t);

    printGraph(g);

    Collection<Vertex<? extends Oplet<?, ?>, ?, ?>> vertices = g.getVertices();
    assertEquals(11, vertices.size());

    Collection<Edge> edges = g.getEdges();
    assertEquals(10, edges.size());
  }
  // Apply Metrics on all streams, simple graph
  @Test
  public void metricsEverywhereSimple() throws Exception {

    Topology t = newTopology();
    Graph g = t.graph();

    // Source
    TStream<Integer> d = integers(t, 1, 2, 3);
    d.sink(tuple -> System.out.print("."));

    // Insert counter metrics into all the topology streams
    Metrics.counter(t);

    printGraph(g);

    Collection<Vertex<? extends Oplet<?, ?>, ?, ?>> vertices = g.getVertices();
    assertEquals(3, vertices.size());

    Collection<Edge> edges = g.getEdges();
    assertEquals(2, edges.size());
  }