Examples with Timer org.apache.beam.sdk.state.Timer used on opensource projects

Example 1 with Timer

use of org.apache.beam.sdk.state.Timer in project beam by apache.

the class ParDoTest method testOutOfBoundsEventTimeTimer.

@Test
@Category({ ValidatesRunner.class, UsesTimersInParDo.class })
public void testOutOfBoundsEventTimeTimer() throws Exception {
    final String timerId = "foo";
    DoFn<KV<String, Integer>, Integer> fn = new DoFn<KV<String, Integer>, Integer>() {

        @TimerId(timerId)
        private final TimerSpec spec = TimerSpecs.timer(TimeDomain.EVENT_TIME);

        @ProcessElement
        public void processElement(ProcessContext context, BoundedWindow window, @TimerId(timerId) Timer timer) {
            timer.set(window.maxTimestamp().plus(1L));
        }

        @OnTimer(timerId)
        public void onTimer(OnTimerContext context) {
        }
    };
    PCollection<Integer> output = pipeline.apply(Create.of(KV.of("hello", 37))).apply(ParDo.of(fn));
    thrown.expect(RuntimeException.class);
    // Note that runners can reasonably vary their message - this matcher should be flexible
    // and can be evolved.
    thrown.expectMessage("event time timer");
    thrown.expectMessage("expiration");
    pipeline.run();
}

Example 2 with Timer

use of org.apache.beam.sdk.state.Timer in project beam by apache.

the class ParDoTest method testEventTimeTimerMultipleKeys.

/**
   * Tests that event time timers for multiple keys both fire. This particularly exercises
   * implementations that may GC in ways not simply governed by the watermark.
   */
@Test
@Category({ ValidatesRunner.class, UsesTimersInParDo.class })
public void testEventTimeTimerMultipleKeys() throws Exception {
    final String timerId = "foo";
    final String stateId = "sizzle";
    final int offset = 5000;
    final int timerOutput = 4093;
    DoFn<KV<String, Integer>, KV<String, Integer>> fn = new DoFn<KV<String, Integer>, KV<String, Integer>>() {

        @TimerId(timerId)
        private final TimerSpec spec = TimerSpecs.timer(TimeDomain.EVENT_TIME);

        @StateId(stateId)
        private final StateSpec<ValueState<String>> stateSpec = StateSpecs.value(StringUtf8Coder.of());

        @ProcessElement
        public void processElement(ProcessContext context, @TimerId(timerId) Timer timer, @StateId(stateId) ValueState<String> state, BoundedWindow window) {
            timer.set(window.maxTimestamp());
            state.write(context.element().getKey());
            context.output(KV.of(context.element().getKey(), context.element().getValue() + offset));
        }

        @OnTimer(timerId)
        public void onTimer(OnTimerContext context, @StateId(stateId) ValueState<String> state) {
            context.output(KV.of(state.read(), timerOutput));
        }
    };
    // Enough keys that we exercise interesting code paths
    int numKeys = 50;
    List<KV<String, Integer>> input = new ArrayList<>();
    List<KV<String, Integer>> expectedOutput = new ArrayList<>();
    for (Integer key = 0; key < numKeys; ++key) {
        // Each key should have just one final output at GC time
        expectedOutput.add(KV.of(key.toString(), timerOutput));
        for (int i = 0; i < 15; ++i) {
            // Each input should be output with the offset added
            input.add(KV.of(key.toString(), i));
            expectedOutput.add(KV.of(key.toString(), i + offset));
        }
    }
    Collections.shuffle(input);
    PCollection<KV<String, Integer>> output = pipeline.apply(Create.of(input)).apply(ParDo.of(fn));
    PAssert.that(output).containsInAnyOrder(expectedOutput);
    pipeline.run();
}

Example 3 with Timer

use of org.apache.beam.sdk.state.Timer in project beam by apache.

the class ParDoTest method testSimpleProcessingTimerTimer.

@Test
@Category({ NeedsRunner.class, UsesTimersInParDo.class, UsesTestStream.class })
public void testSimpleProcessingTimerTimer() throws Exception {
    final String timerId = "foo";
    DoFn<KV<String, Integer>, Integer> fn = new DoFn<KV<String, Integer>, Integer>() {

        @TimerId(timerId)
        private final TimerSpec spec = TimerSpecs.timer(TimeDomain.PROCESSING_TIME);

        @ProcessElement
        public void processElement(ProcessContext context, @TimerId(timerId) Timer timer) {
            timer.offset(Duration.standardSeconds(1)).setRelative();
            context.output(3);
        }

        @OnTimer(timerId)
        public void onTimer(OnTimerContext context) {
            context.output(42);
        }
    };
    TestStream<KV<String, Integer>> stream = TestStream.create(KvCoder.of(StringUtf8Coder.of(), VarIntCoder.of())).addElements(KV.of("hello", 37)).advanceProcessingTime(Duration.standardSeconds(2)).advanceWatermarkToInfinity();
    PCollection<Integer> output = pipeline.apply(stream).apply(ParDo.of(fn));
    PAssert.that(output).containsInAnyOrder(3, 42);
    pipeline.run();
}

Example 4 with Timer

use of org.apache.beam.sdk.state.Timer in project beam by apache.

the class DoFnOperatorTest method testStateGCForStatefulFn.

@Test
public void testStateGCForStatefulFn() throws Exception {
    WindowingStrategy<Object, IntervalWindow> windowingStrategy = WindowingStrategy.of(FixedWindows.of(new Duration(10))).withAllowedLateness(Duration.ZERO);
    final String timerId = "boo";
    final String stateId = "dazzle";
    final int offset = 5000;
    final int timerOutput = 4093;
    DoFn<KV<String, Integer>, KV<String, Integer>> fn = new DoFn<KV<String, Integer>, KV<String, Integer>>() {

        @TimerId(timerId)
        private final TimerSpec spec = TimerSpecs.timer(TimeDomain.EVENT_TIME);

        @StateId(stateId)
        private final StateSpec<ValueState<String>> stateSpec = StateSpecs.value(StringUtf8Coder.of());

        @ProcessElement
        public void processElement(ProcessContext context, @TimerId(timerId) Timer timer, @StateId(stateId) ValueState<String> state, BoundedWindow window) {
            timer.set(window.maxTimestamp());
            state.write(context.element().getKey());
            context.output(KV.of(context.element().getKey(), context.element().getValue() + offset));
        }

        @OnTimer(timerId)
        public void onTimer(OnTimerContext context, @StateId(stateId) ValueState<String> state) {
            context.output(KV.of(state.read(), timerOutput));
        }
    };
    WindowedValue.FullWindowedValueCoder<KV<String, Integer>> windowedValueCoder = WindowedValue.getFullCoder(KvCoder.of(StringUtf8Coder.of(), VarIntCoder.of()), windowingStrategy.getWindowFn().windowCoder());
    TupleTag<KV<String, Integer>> outputTag = new TupleTag<>("main-output");
    DoFnOperator<KV<String, Integer>, KV<String, Integer>, WindowedValue<KV<String, Integer>>> doFnOperator = new DoFnOperator<>(fn, "stepName", windowedValueCoder, outputTag, Collections.<TupleTag<?>>emptyList(), new DoFnOperator.DefaultOutputManagerFactory<WindowedValue<KV<String, Integer>>>(), windowingStrategy, new HashMap<Integer, PCollectionView<?>>(), /* side-input mapping */
    Collections.<PCollectionView<?>>emptyList(), /* side inputs */
    PipelineOptionsFactory.as(FlinkPipelineOptions.class), StringUtf8Coder.of());
    KeyedOneInputStreamOperatorTestHarness<String, WindowedValue<KV<String, Integer>>, WindowedValue<KV<String, Integer>>> testHarness = new KeyedOneInputStreamOperatorTestHarness<>(doFnOperator, new KeySelector<WindowedValue<KV<String, Integer>>, String>() {

        @Override
        public String getKey(WindowedValue<KV<String, Integer>> kvWindowedValue) throws Exception {
            return kvWindowedValue.getValue().getKey();
        }
    }, new CoderTypeInformation<>(StringUtf8Coder.of()));
    testHarness.open();
    testHarness.processWatermark(0);
    assertEquals(0, testHarness.numKeyedStateEntries());
    IntervalWindow window1 = new IntervalWindow(new Instant(0), Duration.millis(10));
    testHarness.processElement(new StreamRecord<>(WindowedValue.of(KV.of("key1", 5), new Instant(1), window1, PaneInfo.NO_FIRING)));
    testHarness.processElement(new StreamRecord<>(WindowedValue.of(KV.of("key2", 7), new Instant(3), window1, PaneInfo.NO_FIRING)));
    assertThat(this.<KV<String, Integer>>stripStreamRecordFromWindowedValue(testHarness.getOutput()), contains(WindowedValue.of(KV.of("key1", 5 + offset), new Instant(1), window1, PaneInfo.NO_FIRING), WindowedValue.of(KV.of("key2", 7 + offset), new Instant(3), window1, PaneInfo.NO_FIRING)));
    assertEquals(2, testHarness.numKeyedStateEntries());
    testHarness.getOutput().clear();
    // this should trigger both the window.maxTimestamp() timer and the GC timer
    // this tests that the GC timer fires after the user timer
    testHarness.processWatermark(window1.maxTimestamp().plus(windowingStrategy.getAllowedLateness()).plus(StatefulDoFnRunner.TimeInternalsCleanupTimer.GC_DELAY_MS).getMillis());
    assertThat(this.<KV<String, Integer>>stripStreamRecordFromWindowedValue(testHarness.getOutput()), contains(WindowedValue.of(KV.of("key1", timerOutput), new Instant(9), window1, PaneInfo.NO_FIRING), WindowedValue.of(KV.of("key2", timerOutput), new Instant(9), window1, PaneInfo.NO_FIRING)));
    // ensure the state was garbage collected
    assertEquals(0, testHarness.numKeyedStateEntries());
    testHarness.close();
}

Example 5 with Timer

use of org.apache.beam.sdk.state.Timer in project beam by apache.

the class DoFnInvokersTest method testDoFnWithTimer.

/**
   * Tests that the generated {@link DoFnInvoker} passes the timer parameter that it
   * should.
   */
@Test
public void testDoFnWithTimer() throws Exception {
    Timer mockTimer = mock(Timer.class);
    final String timerId = "my-timer-id-here";
    when(mockArgumentProvider.timer(timerId)).thenReturn(mockTimer);
    class MockFn extends DoFn<String, String> {

        @TimerId(timerId)
        private final TimerSpec spec = TimerSpecs.timer(TimeDomain.EVENT_TIME);

        @ProcessElement
        public void processElement(ProcessContext c, @TimerId(timerId) Timer timer) throws Exception {
        }

        @OnTimer(timerId)
        public void onTimer() {
        }
    }
    MockFn fn = mock(MockFn.class);
    invokeProcessElement(fn);
    verify(fn).processElement(mockProcessContext, mockTimer);
}