@Test
public void testEventCountingRoller() throws IOException, InterruptedException {
int maxEvents = 100;
MockHDFSWriter hdfsWriter = new MockHDFSWriter();
BucketWriter bucketWriter =
new BucketWriter(
0,
0,
maxEvents,
0,
ctx,
"/tmp",
"file",
"",
".tmp",
null,
null,
SequenceFile.CompressionType.NONE,
hdfsWriter,
timedRollerPool,
proxy,
new SinkCounter("test-bucket-writer-" + System.currentTimeMillis()),
0,
null,
null,
30000,
Executors.newSingleThreadExecutor(),
0,
0);
Event e = EventBuilder.withBody("foo", Charsets.UTF_8);
for (int i = 0; i < 1000; i++) {
bucketWriter.append(e);
}
logger.info("Number of events written: {}", hdfsWriter.getEventsWritten());
logger.info("Number of bytes written: {}", hdfsWriter.getBytesWritten());
logger.info("Number of files opened: {}", hdfsWriter.getFilesOpened());
Assert.assertEquals("events written", 1000, hdfsWriter.getEventsWritten());
Assert.assertEquals("bytes written", 3000, hdfsWriter.getBytesWritten());
Assert.assertEquals("files opened", 10, hdfsWriter.getFilesOpened());
}
@Test
public void testIntervalRoller() throws IOException, InterruptedException {
final int ROLL_INTERVAL = 1; // seconds
final int NUM_EVENTS = 10;
final AtomicBoolean calledBack = new AtomicBoolean(false);
MockHDFSWriter hdfsWriter = new MockHDFSWriter();
BucketWriter bucketWriter =
new BucketWriter(
ROLL_INTERVAL,
0,
0,
0,
ctx,
"/tmp",
"file",
"",
".tmp",
null,
null,
SequenceFile.CompressionType.NONE,
hdfsWriter,
timedRollerPool,
proxy,
new SinkCounter("test-bucket-writer-" + System.currentTimeMillis()),
0,
new HDFSEventSink.WriterCallback() {
@Override
public void run(String filePath) {
calledBack.set(true);
}
},
null,
30000,
Executors.newSingleThreadExecutor(),
0,
0);
Event e = EventBuilder.withBody("foo", Charsets.UTF_8);
long startNanos = System.nanoTime();
for (int i = 0; i < NUM_EVENTS - 1; i++) {
bucketWriter.append(e);
}
// sleep to force a roll... wait 2x interval just to be sure
Thread.sleep(2 * ROLL_INTERVAL * 1000L);
Assert.assertTrue(bucketWriter.closed);
Assert.assertTrue(calledBack.get());
bucketWriter =
new BucketWriter(
ROLL_INTERVAL,
0,
0,
0,
ctx,
"/tmp",
"file",
"",
".tmp",
null,
null,
SequenceFile.CompressionType.NONE,
hdfsWriter,
timedRollerPool,
proxy,
new SinkCounter("test-bucket-writer-" + System.currentTimeMillis()),
0,
null,
null,
30000,
Executors.newSingleThreadExecutor(),
0,
0);
// write one more event (to reopen a new file so we will roll again later)
bucketWriter.append(e);
long elapsedMillis =
TimeUnit.MILLISECONDS.convert(System.nanoTime() - startNanos, TimeUnit.NANOSECONDS);
long elapsedSeconds = elapsedMillis / 1000L;
logger.info("Time elapsed: {} milliseconds", elapsedMillis);
logger.info("Number of events written: {}", hdfsWriter.getEventsWritten());
logger.info("Number of bytes written: {}", hdfsWriter.getBytesWritten());
logger.info("Number of files opened: {}", hdfsWriter.getFilesOpened());
logger.info("Number of files closed: {}", hdfsWriter.getFilesClosed());
Assert.assertEquals("events written", NUM_EVENTS, hdfsWriter.getEventsWritten());
Assert.assertEquals(
"bytes written", e.getBody().length * NUM_EVENTS, hdfsWriter.getBytesWritten());
Assert.assertEquals("files opened", 2, hdfsWriter.getFilesOpened());
// before auto-roll
Assert.assertEquals("files closed", 1, hdfsWriter.getFilesClosed());
logger.info("Waiting for roll...");
Thread.sleep(2 * ROLL_INTERVAL * 1000L);
logger.info("Number of files closed: {}", hdfsWriter.getFilesClosed());
Assert.assertEquals("files closed", 2, hdfsWriter.getFilesClosed());
}