Examples with PriorityFetchState com.facebook.imagepipeline.producers.PriorityNetworkFetcher.PriorityFetchState used on opensource projects

Example 11 with PriorityFetchState

use of com.facebook.imagepipeline.producers.PriorityNetworkFetcher.PriorityFetchState in project fresco by facebook.

the class PriorityNetworkFetcherTest method testMovingDelayedRequeue_requeueOnFail.

/**
 * Scenario: an image fetch fails. We expect it to be re-queued up to maxNumberOfRequeue times.
 * The reuqest should be re-queued immediately up to immediateRequeueCount and then it will wait
 * in the delayedQueue to be re-queued again after delayTimeInMillis.
 */
@Test
public void testMovingDelayedRequeue_requeueOnFail() {
    RecordingNetworkFetcher recordingNetworkFetcher = new RecordingNetworkFetcher();
    final int maxNumberOfRequeue = 3;
    final int immediateRequeueCount = 1;
    final int delayTimeInMillis = 300;
    FakeClock clock = new FakeClock();
    // Max hi-pri: 1, max low-pri: 0
    PriorityNetworkFetcher<FetchState> fetcher = new PriorityNetworkFetcher<>(recordingNetworkFetcher, false, 1, 0, true, maxNumberOfRequeue, false, immediateRequeueCount, delayTimeInMillis, false, false, /* nonRecoverableExceptionPreventsRequeue */
    1, /* maxConnectAttemptCount */
    1, /* maxAttemptCount */
    false, /* retryLowPriAll */
    false, /* retryLowPriUnknownHostException */
    false, /* retryLowPriConnectionException */
    clock);
    PriorityFetchState<FetchState> hipri1 = fetch(fetcher, "hipri1", callback, true);
    assertThat(fetcher.getCurrentlyFetching()).containsExactly(hipri1);
    assertThat(fetcher.getHiPriQueue()).isEmpty();
    assertThat(fetcher.getLowPriQueue()).isEmpty();
    // Simulate 1st failure in hipri1, the request should be requeued immediately.
    getOnlyElement(recordingNetworkFetcher.callbacks.get(hipri1.delegatedState)).onFailure(new Exception());
    assertThat(fetcher.getCurrentlyFetching()).containsExactly(hipri1);
    assertThat(fetcher.getHiPriQueue()).isEmpty();
    assertThat(fetcher.getLowPriQueue()).isEmpty();
    assertThat(fetcher.getDelayedQeueue()).isEmpty();
    assertThat(hipri1.requeueCount).isEqualTo(1);
    assertThat(fetcher.getExtraMap(hipri1, 123)).containsEntry("delay_count", "0");
    // Simulate 2nd failure in hipri1, the request should wait in the delayedQueue for
    // delayTimeInMillis.
    getOnlyElement(recordingNetworkFetcher.callbacks.get(hipri1.delegatedState)).onFailure(new Exception());
    assertThat(fetcher.getCurrentlyFetching()).isEmpty();
    assertThat(fetcher.getHiPriQueue()).isEmpty();
    assertThat(fetcher.getLowPriQueue()).isEmpty();
    assertThat(fetcher.getDelayedQeueue()).containsExactly(hipri1);
    assertThat(fetcher.getExtraMap(hipri1, 123)).containsEntry("delay_count", "1");
    clock.incrementBy(301);
    // to trigger inflight requests
    PriorityFetchState<FetchState> hipri2 = fetch(fetcher, "hipri2", callback, true);
    // 301 ms is bigger than delayTimeInMillis, so hipri1 request should be re-queued now.
    assertThat(fetcher.getCurrentlyFetching()).containsExactly(hipri1);
    assertThat(fetcher.getHiPriQueue()).containsExactly(hipri2);
    assertThat(fetcher.getLowPriQueue()).isEmpty();
    assertThat(fetcher.getDelayedQeueue()).isEmpty();
    assertThat(hipri1.requeueCount).isEqualTo(2);
}