Examples with AutoScaleEvent io.pravega.shared.controller.event.AutoScaleEvent used on opensource projects

Example 1 with AutoScaleEvent

use of io.pravega.shared.controller.event.AutoScaleEvent in project pravega by pravega.

the class AutoScaleProcessor method triggerScaleDown.

private void triggerScaleDown(String streamSegmentName, boolean silent) {
    if (initialized.get()) {
        Pair<Long, Long> pair = cache.getIfPresent(streamSegmentName);
        long lastRequestTs = 0;
        if (pair != null && pair.getValue() != null) {
            lastRequestTs = pair.getValue();
        }
        long timestamp = System.currentTimeMillis();
        if (timestamp - lastRequestTs > configuration.getMuteDuration().toMillis()) {
            log.info("sending request for scale down for {}", streamSegmentName);
            Segment segment = Segment.fromScopedName(streamSegmentName);
            AutoScaleEvent event = new AutoScaleEvent(segment.getScope(), segment.getStreamName(), segment.getSegmentNumber(), AutoScaleEvent.DOWN, timestamp, 0, silent);
            writeRequest(event).thenAccept(x -> {
                if (!silent) {
                    // mute only scale downs
                    cache.put(streamSegmentName, new ImmutablePair<>(0L, timestamp));
                }
            });
        }
    }
}

Example 2 with AutoScaleEvent

use of io.pravega.shared.controller.event.AutoScaleEvent in project pravega by pravega.

the class AutoScaleProcessor method triggerScaleUp.

private void triggerScaleUp(String streamSegmentName, int numOfSplits) {
    if (initialized.get()) {
        Pair<Long, Long> pair = cache.getIfPresent(streamSegmentName);
        long lastRequestTs = 0;
        if (pair != null && pair.getKey() != null) {
            lastRequestTs = pair.getKey();
        }
        long timestamp = System.currentTimeMillis();
        if (timestamp - lastRequestTs > configuration.getMuteDuration().toMillis()) {
            log.info("sending request for scale up for {}", streamSegmentName);
            Segment segment = Segment.fromScopedName(streamSegmentName);
            AutoScaleEvent event = new AutoScaleEvent(segment.getScope(), segment.getStreamName(), segment.getSegmentNumber(), AutoScaleEvent.UP, timestamp, numOfSplits, false);
            // Mute scale for timestamp for both scale up and down
            writeRequest(event).thenAccept(x -> cache.put(streamSegmentName, new ImmutablePair<>(timestamp, timestamp)));
        }
    }
}

Example 3 with AutoScaleEvent

use of io.pravega.shared.controller.event.AutoScaleEvent in project pravega by pravega.

the class ScaleRequestHandlerTest method testScaleRequest.

@Test(timeout = 20000)
public void testScaleRequest() throws ExecutionException, InterruptedException {
    AutoScaleTask requestHandler = new AutoScaleTask(streamMetadataTasks, streamStore, executor);
    ScaleOperationTask scaleRequestHandler = new ScaleOperationTask(streamMetadataTasks, streamStore, executor);
    StreamRequestHandler multiplexer = new StreamRequestHandler(requestHandler, scaleRequestHandler, null, null, null, null, executor);
    // Send number of splits = 1
    AutoScaleEvent request = new AutoScaleEvent(scope, stream, 2, AutoScaleEvent.UP, System.currentTimeMillis(), 1, false);
    CompletableFuture<ScaleOpEvent> request1 = new CompletableFuture<>();
    CompletableFuture<ScaleOpEvent> request2 = new CompletableFuture<>();
    EventStreamWriter<ControllerEvent> writer = createWriter(x -> {
        if (!request1.isDone()) {
            final ArrayList<AbstractMap.SimpleEntry<Double, Double>> expected = new ArrayList<>();
            double start = 2.0 / 3.0;
            double end = 1.0;
            double middle = (start + end) / 2;
            expected.add(new AbstractMap.SimpleEntry<>(start, middle));
            expected.add(new AbstractMap.SimpleEntry<>(middle, end));
            checkRequest(request1, x, Lists.newArrayList(2), expected);
        } else if (!request2.isDone()) {
            final ArrayList<AbstractMap.SimpleEntry<Double, Double>> expected = new ArrayList<>();
            double start = 2.0 / 3.0;
            double end = 1.0;
            expected.add(new AbstractMap.SimpleEntry<>(start, end));
            checkRequest(request2, x, Lists.newArrayList(3, 4), expected);
        }
    });
    when(clientFactory.createEventWriter(eq(Config.SCALE_STREAM_NAME), eq(new JavaSerializer<ControllerEvent>()), any())).thenReturn(writer);
    assertTrue(Futures.await(multiplexer.process(request)));
    assertTrue(Futures.await(request1));
    assertTrue(Futures.await(multiplexer.process(request1.get())));
    // verify that the event is posted successfully
    List<Segment> activeSegments = streamStore.getActiveSegments(scope, stream, null, executor).get();
    assertTrue(activeSegments.stream().noneMatch(z -> z.getNumber() == 2));
    // verify that two splits are created even when we sent 1 as numOfSplits in AutoScaleEvent.
    assertTrue(activeSegments.stream().anyMatch(z -> z.getNumber() == 3));
    assertTrue(activeSegments.stream().anyMatch(z -> z.getNumber() == 4));
    assertTrue(activeSegments.size() == 4);
    request = new AutoScaleEvent(scope, stream, 4, AutoScaleEvent.DOWN, System.currentTimeMillis(), 0, false);
    assertTrue(Futures.await(multiplexer.process(request)));
    activeSegments = streamStore.getActiveSegments(scope, stream, null, executor).get();
    assertTrue(activeSegments.stream().anyMatch(z -> z.getNumber() == 4));
    assertTrue(activeSegments.size() == 4);
    request = new AutoScaleEvent(scope, stream, 3, AutoScaleEvent.DOWN, System.currentTimeMillis(), 0, false);
    assertTrue(Futures.await(multiplexer.process(request)));
    assertTrue(Futures.await(request2));
    assertTrue(Futures.await(multiplexer.process(request2.get())));
    activeSegments = streamStore.getActiveSegments(scope, stream, null, executor).get();
    assertTrue(activeSegments.stream().noneMatch(z -> z.getNumber() == 3));
    assertTrue(activeSegments.stream().noneMatch(z -> z.getNumber() == 4));
    assertTrue(activeSegments.stream().anyMatch(z -> z.getNumber() == 5));
    assertTrue(activeSegments.size() == 3);
    // make it throw a non retryable failure so that test does not wait for number of retries.
    // This will bring down the test duration drastically because a retryable failure can keep retrying for few seconds.
    // And if someone changes retry durations and number of attempts in retry helper, it will impact this test's running time.
    // hence sending incorrect segmentsToSeal list which will result in a non retryable failure and this will fail immediately
    assertFalse(Futures.await(multiplexer.process(new ScaleOpEvent(scope, stream, Lists.newArrayList(6), Lists.newArrayList(new AbstractMap.SimpleEntry<>(0.0, 1.0)), true, System.currentTimeMillis()))));
    assertTrue(activeSegments.stream().noneMatch(z -> z.getNumber() == 3));
    assertTrue(activeSegments.stream().noneMatch(z -> z.getNumber() == 4));
    assertTrue(activeSegments.stream().anyMatch(z -> z.getNumber() == 5));
    assertTrue(activeSegments.size() == 3);
    assertFalse(Futures.await(multiplexer.process(new AbortEvent(scope, stream, 0, UUID.randomUUID()))));
}