Examples with AsyncRemoteTable org.apache.samza.table.remote.AsyncRemoteTable used on opensource projects

Example 21 with AsyncRemoteTable

use of org.apache.samza.table.remote.AsyncRemoteTable in project samza by apache.

the class TestAsyncRetriableTable method testGetAllWithOneRetry.

@Test
public void testGetAllWithOneRetry() {
    TableRetryPolicy policy = new TableRetryPolicy();
    policy.withFixedBackoff(Duration.ofMillis(10));
    TableReadFunction<String, String> readFn = mock(TableReadFunction.class);
    doReturn(true).when(readFn).isRetriable(any());
    AtomicInteger times = new AtomicInteger();
    Map<String, String> map = new HashMap<>();
    map.put("foo1", "bar1");
    map.put("foo2", "bar2");
    doAnswer(invocation -> {
        CompletableFuture<Map<String, String>> future = new CompletableFuture();
        if (times.get() > 0) {
            future.complete(map);
        } else {
            times.incrementAndGet();
            future.completeExceptionally(new RuntimeException("test exception"));
        }
        return future;
    }).when(readFn).getAllAsync(anyCollection());
    AsyncReadWriteUpdateTable delegate = new AsyncRemoteTable(readFn, null);
    AsyncRetriableTable table = new AsyncRetriableTable("t1", delegate, policy, null, schedExec, readFn, null);
    table.init(TestRemoteTable.getMockContext());
    assertEquals(map, table.getAllAsync(Arrays.asList("foo1", "foo2")).join());
    verify(readFn, times(2)).getAllAsync(any());
    assertEquals(1, table.readRetryMetrics.retryCount.getCount());
    assertEquals(0, table.readRetryMetrics.successCount.getCount());
    assertEquals(0, table.readRetryMetrics.permFailureCount.getCount());
    assertTrue(table.readRetryMetrics.retryTimer.getSnapshot().getMax() > 0);
}