/*
* 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());
}
