Java Code Examples for org.apache.beam.sdk.values.PCollection#setIsBoundedInternal()

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Example 1
Source File: WriteFilesTest.java    From beam with Apache License 2.0 4 votes vote down vote up 
private void testDynamicDestinationsHelper(boolean bounded, boolean emptyShards)
    throws IOException {
  TestDestinations dynamicDestinations = new TestDestinations(getBaseOutputDirectory());
  SimpleSink<Integer> sink =
      new SimpleSink<>(getBaseOutputDirectory(), dynamicDestinations, Compression.UNCOMPRESSED);

  // Flag to validate that the pipeline options are passed to the Sink.
  WriteOptions options = TestPipeline.testingPipelineOptions().as(WriteOptions.class);
  options.setTestFlag("test_value");
  Pipeline p = TestPipeline.create(options);

  final int numInputs = 100;
  List<String> inputs = Lists.newArrayList();
  for (int i = 0; i < numInputs; ++i) {
    inputs.add(Integer.toString(i));
  }
  // Prepare timestamps for the elements.
  List<Long> timestamps = new ArrayList<>();
  for (long i = 0; i < inputs.size(); i++) {
    timestamps.add(i + 1);
  }
  // If emptyShards==true make numShards larger than the number of elements per destination.
  // This will force every destination to generate some empty shards.
  int numShards = emptyShards ? 2 * numInputs / 5 : 2;
  WriteFiles<String, Integer, String> writeFiles = WriteFiles.to(sink).withNumShards(numShards);

  PCollection<String> input = p.apply(Create.timestamped(inputs, timestamps));
  WriteFilesResult<Integer> res;
  if (!bounded) {
    input.setIsBoundedInternal(IsBounded.UNBOUNDED);
    input = input.apply(Window.into(FixedWindows.of(Duration.standardDays(1))));
    res = input.apply(writeFiles.withWindowedWrites());
  } else {
    res = input.apply(writeFiles);
  }
  res.getPerDestinationOutputFilenames().apply(new VerifyFilesExist<>());
  p.run();

  for (int i = 0; i < 5; ++i) {
    ResourceId base =
        getBaseOutputDirectory().resolve("file_" + i, StandardResolveOptions.RESOLVE_FILE);
    List<String> expected = Lists.newArrayList();
    for (int j = i; j < numInputs; j += 5) {
      expected.add("record_" + j);
    }
    checkFileContents(
        base.toString(),
        expected,
        Optional.of(numShards),
        bounded /* expectRemovedTempDirectory */);
  }
}