Examples with PerWindowFiles org.apache.beam.examples.common.WriteOneFilePerWindow.PerWindowFiles used on opensource projects

Example 1 with PerWindowFiles

use of org.apache.beam.examples.common.WriteOneFilePerWindow.PerWindowFiles in project beam by apache.

the class WindowedWordCountIT method testWindowedWordCountPipeline.

private void testWindowedWordCountPipeline(WindowedWordCountITOptions options) throws Exception {
    ResourceId output = FileBasedSink.convertToFileResourceIfPossible(options.getOutput());
    PerWindowFiles filenamePolicy = new PerWindowFiles(output);
    List<ShardedFile> expectedOutputFiles = Lists.newArrayListWithCapacity(6);
    for (int startMinute : ImmutableList.of(0, 10, 20, 30, 40, 50)) {
        final Instant windowStart = new Instant(options.getMinTimestampMillis()).plus(Duration.standardMinutes(startMinute));
        String filePrefix = filenamePolicy.filenamePrefixForWindow(new IntervalWindow(windowStart, windowStart.plus(Duration.standardMinutes(10))));
        expectedOutputFiles.add(new NumberedShardedFile(output.getCurrentDirectory().resolve(filePrefix, StandardResolveOptions.RESOLVE_FILE).toString() + "*"));
    }
    ShardedFile inputFile = new ExplicitShardedFile(Collections.singleton(options.getInputFile()));
    // For this integration test, input is tiny and we can build the expected counts
    SortedMap<String, Long> expectedWordCounts = new TreeMap<>();
    for (String line : inputFile.readFilesWithRetries(Sleeper.DEFAULT, BACK_OFF_FACTORY.backoff())) {
        String[] words = line.split(ExampleUtils.TOKENIZER_PATTERN, -1);
        for (String word : words) {
            if (!word.isEmpty()) {
                expectedWordCounts.put(word, MoreObjects.firstNonNull(expectedWordCounts.get(word), 0L) + 1L);
            }
        }
    }
    WindowedWordCount.runWindowedWordCount(options);
    assertThat(expectedOutputFiles, containsWordCounts(expectedWordCounts));
}