Java Code Examples for org.apache.flink.streaming.api.functions.source.ContinuousFileMonitoringFunction#cancel()

The following examples show how to use org.apache.flink.streaming.api.functions.source.ContinuousFileMonitoringFunction#cancel() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
/**
 * Manually run this to write binary snapshot data. Remove @Ignore to run.
 */
@Ignore
@Test
public void writeMonitoringSourceSnapshot() throws Exception {

	File testFolder = tempFolder.newFolder();

	long fileModTime = Long.MIN_VALUE;
	for (int i = 0; i < 1; i++) {
		Tuple2<File, String> file = createFileAndFillWithData(testFolder, "file", i, "This is test line.");
		fileModTime = file.f0.lastModified();
	}

	TextInputFormat format = new TextInputFormat(new Path(testFolder.getAbsolutePath()));

	final ContinuousFileMonitoringFunction<String> monitoringFunction =
		new ContinuousFileMonitoringFunction<>(format, FileProcessingMode.PROCESS_CONTINUOUSLY, 1, INTERVAL);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> src =
		new StreamSource<>(monitoringFunction);

	final AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarness =
			new AbstractStreamOperatorTestHarness<>(src, 1, 1, 0);

	testHarness.open();

	final Throwable[] error = new Throwable[1];

	final OneShotLatch latch = new OneShotLatch();

	// run the source asynchronously
	Thread runner = new Thread() {
		@Override
		public void run() {
			try {
				monitoringFunction.run(new DummySourceContext() {
					@Override
					public void collect(TimestampedFileInputSplit element) {
						latch.trigger();
					}

					@Override
					public void markAsTemporarilyIdle() {

					}
				});
			}
			catch (Throwable t) {
				t.printStackTrace();
				error[0] = t;
			}
		}
	};
	runner.start();

	if (!latch.isTriggered()) {
		latch.await();
	}

	final OperatorSubtaskState snapshot;
	synchronized (testHarness.getCheckpointLock()) {
		snapshot = testHarness.snapshot(0L, 0L);
	}

	OperatorSnapshotUtil.writeStateHandle(
			snapshot,
			"src/test/resources/monitoring-function-migration-test-" + fileModTime + "-flink" + flinkGenerateSavepointVersion + "-snapshot");

	monitoringFunction.cancel();
	runner.join();

	testHarness.close();
}
 
Example 2
@Test
public void testFunctionRestore() throws Exception {
	String testBasePath = hdfsURI + "/" + UUID.randomUUID() + "/";

	org.apache.hadoop.fs.Path path = null;
	long fileModTime = Long.MIN_VALUE;
	for (int i = 0; i < 1; i++) {
		Tuple2<org.apache.hadoop.fs.Path, String> file = createFileAndFillWithData(testBasePath, "file", i, "This is test line.");
		path = file.f0;
		fileModTime = hdfs.getFileStatus(file.f0).getModificationTime();
	}

	TextInputFormat format = new TextInputFormat(new Path(testBasePath));

	final ContinuousFileMonitoringFunction<String> monitoringFunction =
		createTestContinuousFileMonitoringFunction(format, FileProcessingMode.PROCESS_CONTINUOUSLY);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> src =
		new StreamSource<>(monitoringFunction);

	final AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarness =
		new AbstractStreamOperatorTestHarness<>(src, 1, 1, 0);
	testHarness.open();

	final Throwable[] error = new Throwable[1];

	final OneShotLatch latch = new OneShotLatch();

	final DummySourceContext sourceContext = new DummySourceContext() {
		@Override
		public void collect(TimestampedFileInputSplit element) {
			latch.trigger();
		}
	};

	// run the source asynchronously
	Thread runner = new Thread() {
		@Override
		public void run() {
			try {
				monitoringFunction.run(sourceContext);
			}
			catch (Throwable t) {
				t.printStackTrace();
				error[0] = t;
			}
		}
	};
	runner.start();

	// first condition for the source to have updated its state: emit at least one element
	if (!latch.isTriggered()) {
		latch.await();
	}

	// second condition for the source to have updated its state: it's not on the lock anymore,
	// this means it has processed all the splits and updated its state.
	synchronized (sourceContext.getCheckpointLock()) {}

	OperatorSubtaskState snapshot = testHarness.snapshot(0, 0);
	monitoringFunction.cancel();
	runner.join();

	testHarness.close();

	final ContinuousFileMonitoringFunction<String> monitoringFunctionCopy =
		createTestContinuousFileMonitoringFunction(format, FileProcessingMode.PROCESS_CONTINUOUSLY);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> srcCopy =
		new StreamSource<>(monitoringFunctionCopy);

	AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarnessCopy =
		new AbstractStreamOperatorTestHarness<>(srcCopy, 1, 1, 0);
	testHarnessCopy.initializeState(snapshot);
	testHarnessCopy.open();

	Assert.assertNull(error[0]);
	Assert.assertEquals(fileModTime, monitoringFunctionCopy.getGlobalModificationTime());

	hdfs.delete(path, false);
}
 
Example 3
/**
 * Manually run this to write binary snapshot data. Remove @Ignore to run.
 */
@Ignore
@Test
public void writeMonitoringSourceSnapshot() throws Exception {

	File testFolder = tempFolder.newFolder();

	long fileModTime = Long.MIN_VALUE;
	for (int i = 0; i < 1; i++) {
		Tuple2<File, String> file = createFileAndFillWithData(testFolder, "file", i, "This is test line.");
		fileModTime = file.f0.lastModified();
	}

	TextInputFormat format = new TextInputFormat(new Path(testFolder.getAbsolutePath()));

	final ContinuousFileMonitoringFunction<String> monitoringFunction =
		new ContinuousFileMonitoringFunction<>(format, FileProcessingMode.PROCESS_CONTINUOUSLY, 1, INTERVAL);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> src =
		new StreamSource<>(monitoringFunction);

	final AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarness =
			new AbstractStreamOperatorTestHarness<>(src, 1, 1, 0);

	testHarness.open();

	final Throwable[] error = new Throwable[1];

	final OneShotLatch latch = new OneShotLatch();

	// run the source asynchronously
	Thread runner = new Thread() {
		@Override
		public void run() {
			try {
				monitoringFunction.run(new DummySourceContext() {
					@Override
					public void collect(TimestampedFileInputSplit element) {
						latch.trigger();
					}

					@Override
					public void markAsTemporarilyIdle() {

					}
				});
			}
			catch (Throwable t) {
				t.printStackTrace();
				error[0] = t;
			}
		}
	};
	runner.start();

	if (!latch.isTriggered()) {
		latch.await();
	}

	final OperatorSubtaskState snapshot;
	synchronized (testHarness.getCheckpointLock()) {
		snapshot = testHarness.snapshot(0L, 0L);
	}

	OperatorSnapshotUtil.writeStateHandle(
			snapshot,
			"src/test/resources/monitoring-function-migration-test-" + fileModTime + "-flink" + flinkGenerateSavepointVersion + "-snapshot");

	monitoringFunction.cancel();
	runner.join();

	testHarness.close();
}
 
Example 4
@Test
public void testFunctionRestore() throws Exception {
	String testBasePath = hdfsURI + "/" + UUID.randomUUID() + "/";

	org.apache.hadoop.fs.Path path = null;
	long fileModTime = Long.MIN_VALUE;
	for (int i = 0; i < 1; i++) {
		Tuple2<org.apache.hadoop.fs.Path, String> file = createFileAndFillWithData(testBasePath, "file", i, "This is test line.");
		path = file.f0;
		fileModTime = hdfs.getFileStatus(file.f0).getModificationTime();
	}

	TextInputFormat format = new TextInputFormat(new Path(testBasePath));

	final ContinuousFileMonitoringFunction<String> monitoringFunction =
		createTestContinuousFileMonitoringFunction(format, FileProcessingMode.PROCESS_CONTINUOUSLY);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> src =
		new StreamSource<>(monitoringFunction);

	final AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarness =
		new AbstractStreamOperatorTestHarness<>(src, 1, 1, 0);
	testHarness.open();

	final Throwable[] error = new Throwable[1];

	final OneShotLatch latch = new OneShotLatch();

	final DummySourceContext sourceContext = new DummySourceContext() {
		@Override
		public void collect(TimestampedFileInputSplit element) {
			latch.trigger();
		}
	};

	// run the source asynchronously
	Thread runner = new Thread() {
		@Override
		public void run() {
			try {
				monitoringFunction.run(sourceContext);
			}
			catch (Throwable t) {
				t.printStackTrace();
				error[0] = t;
			}
		}
	};
	runner.start();

	// first condition for the source to have updated its state: emit at least one element
	if (!latch.isTriggered()) {
		latch.await();
	}

	// second condition for the source to have updated its state: it's not on the lock anymore,
	// this means it has processed all the splits and updated its state.
	synchronized (sourceContext.getCheckpointLock()) {}

	OperatorSubtaskState snapshot = testHarness.snapshot(0, 0);
	monitoringFunction.cancel();
	runner.join();

	testHarness.close();

	final ContinuousFileMonitoringFunction<String> monitoringFunctionCopy =
		createTestContinuousFileMonitoringFunction(format, FileProcessingMode.PROCESS_CONTINUOUSLY);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> srcCopy =
		new StreamSource<>(monitoringFunctionCopy);

	AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarnessCopy =
		new AbstractStreamOperatorTestHarness<>(srcCopy, 1, 1, 0);
	testHarnessCopy.initializeState(snapshot);
	testHarnessCopy.open();

	Assert.assertNull(error[0]);
	Assert.assertEquals(fileModTime, monitoringFunctionCopy.getGlobalModificationTime());

	hdfs.delete(path, false);
}
 
Example 5
/**
 * Manually run this to write binary snapshot data. Remove @Ignore to run.
 */
@Ignore
@Test
public void writeMonitoringSourceSnapshot() throws Exception {

	File testFolder = tempFolder.newFolder();

	long fileModTime = Long.MIN_VALUE;
	for (int i = 0; i < 1; i++) {
		Tuple2<File, String> file = createFileAndFillWithData(testFolder, "file", i, "This is test line.");
		fileModTime = file.f0.lastModified();
	}

	TextInputFormat format = new TextInputFormat(new Path(testFolder.getAbsolutePath()));

	final ContinuousFileMonitoringFunction<String> monitoringFunction =
		new ContinuousFileMonitoringFunction<>(format, FileProcessingMode.PROCESS_CONTINUOUSLY, 1, INTERVAL);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> src =
		new StreamSource<>(monitoringFunction);

	final AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarness =
			new AbstractStreamOperatorTestHarness<>(src, 1, 1, 0);

	testHarness.open();

	final Throwable[] error = new Throwable[1];

	final OneShotLatch latch = new OneShotLatch();

	// run the source asynchronously
	Thread runner = new Thread() {
		@Override
		public void run() {
			try {
				monitoringFunction.run(new DummySourceContext() {
					@Override
					public void collect(TimestampedFileInputSplit element) {
						latch.trigger();
					}

					@Override
					public void markAsTemporarilyIdle() {

					}
				});
			}
			catch (Throwable t) {
				t.printStackTrace();
				error[0] = t;
			}
		}
	};
	runner.start();

	if (!latch.isTriggered()) {
		latch.await();
	}

	final OperatorSubtaskState snapshot;
	synchronized (testHarness.getCheckpointLock()) {
		snapshot = testHarness.snapshot(0L, 0L);
	}

	OperatorSnapshotUtil.writeStateHandle(
			snapshot,
			"src/test/resources/monitoring-function-migration-test-" + fileModTime + "-flink" + flinkGenerateSavepointVersion + "-snapshot");

	monitoringFunction.cancel();
	runner.join();

	testHarness.close();
}
 
Example 6
@Test
public void testFunctionRestore() throws Exception {
	String testBasePath = hdfsURI + "/" + UUID.randomUUID() + "/";

	org.apache.hadoop.fs.Path path = null;
	long fileModTime = Long.MIN_VALUE;
	for (int i = 0; i < 1; i++) {
		Tuple2<org.apache.hadoop.fs.Path, String> file = createFileAndFillWithData(testBasePath, "file", i, "This is test line.");
		path = file.f0;
		fileModTime = hdfs.getFileStatus(file.f0).getModificationTime();
	}

	TextInputFormat format = new TextInputFormat(new Path(testBasePath));

	final ContinuousFileMonitoringFunction<String> monitoringFunction =
		createTestContinuousFileMonitoringFunction(format, FileProcessingMode.PROCESS_CONTINUOUSLY);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> src =
		new StreamSource<>(monitoringFunction);

	final AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarness =
		new AbstractStreamOperatorTestHarness<>(src, 1, 1, 0);
	testHarness.open();

	final Throwable[] error = new Throwable[1];

	final OneShotLatch latch = new OneShotLatch();

	final DummySourceContext sourceContext = new DummySourceContext() {
		@Override
		public void collect(TimestampedFileInputSplit element) {
			latch.trigger();
		}
	};

	// run the source asynchronously
	Thread runner = new Thread() {
		@Override
		public void run() {
			try {
				monitoringFunction.run(sourceContext);
			}
			catch (Throwable t) {
				t.printStackTrace();
				error[0] = t;
			}
		}
	};
	runner.start();

	// first condition for the source to have updated its state: emit at least one element
	if (!latch.isTriggered()) {
		latch.await();
	}

	// second condition for the source to have updated its state: it's not on the lock anymore,
	// this means it has processed all the splits and updated its state.
	synchronized (sourceContext.getCheckpointLock()) {}

	OperatorSubtaskState snapshot = testHarness.snapshot(0, 0);
	monitoringFunction.cancel();
	runner.join();

	testHarness.close();

	final ContinuousFileMonitoringFunction<String> monitoringFunctionCopy =
		createTestContinuousFileMonitoringFunction(format, FileProcessingMode.PROCESS_CONTINUOUSLY);

	StreamSource<TimestampedFileInputSplit, ContinuousFileMonitoringFunction<String>> srcCopy =
		new StreamSource<>(monitoringFunctionCopy);

	AbstractStreamOperatorTestHarness<TimestampedFileInputSplit> testHarnessCopy =
		new AbstractStreamOperatorTestHarness<>(srcCopy, 1, 1, 0);
	testHarnessCopy.initializeState(snapshot);
	testHarnessCopy.open();

	Assert.assertNull(error[0]);
	Assert.assertEquals(fileModTime, monitoringFunctionCopy.getGlobalModificationTime());

	hdfs.delete(path, false);
}