Examples with WatchEvent java.nio.file.WatchEvent used on opensource projects

Example 1 with WatchEvent

use of java.nio.file.WatchEvent in project cas by apereo.

the class ServiceRegistryConfigWatcher method handleEvent.

/**
     * Handle event.
     *
     * @param key the key
     */
private void handleEvent(final WatchKey key) {
    this.readLock.lock();
    try {
        //The filename is the context of the event.
        key.pollEvents().stream().filter(event -> event.count() <= 1).forEach(event -> {
            final WatchEvent.Kind kind = event.kind();
            final WatchEvent<Path> ev = (WatchEvent<Path>) event;
            final Path filename = ev.context();
            final Path parent = (Path) key.watchable();
            final Path fullPath = parent.resolve(filename);
            final File file = fullPath.toFile();
            LOGGER.trace("Detected event [{}] on file [{}]. Loading change...", kind, file);
            if (kind.name().equals(ENTRY_CREATE.name()) && file.exists()) {
                handleCreateEvent(file);
            } else if (kind.name().equals(ENTRY_DELETE.name())) {
                handleDeleteEvent();
            } else if (kind.name().equals(ENTRY_MODIFY.name()) && file.exists()) {
                handleModifyEvent(file);
            }
        });
    } finally {
        this.readLock.unlock();
    }
}

Example 2 with WatchEvent

use of java.nio.file.WatchEvent in project buck by facebook.

the class WatchmanWatcherTest method whenExistsIsFalseThenDeleteEventIsGenerated.

@Test
public void whenExistsIsFalseThenDeleteEventIsGenerated() throws IOException, InterruptedException {
    ImmutableMap<String, Object> watchmanOutput = ImmutableMap.of("files", ImmutableList.of(ImmutableMap.<String, Object>of("name", "foo/bar/baz", "exists", false)));
    Capture<WatchEvent<Path>> eventCapture = newCapture();
    EventBus eventBus = createStrictMock(EventBus.class);
    eventBus.post(capture(eventCapture));
    replay(eventBus);
    WatchmanWatcher watcher = createWatcher(eventBus, watchmanOutput);
    watcher.postEvents(BuckEventBusFactory.newInstance(new FakeClock(0)), WatchmanWatcher.FreshInstanceAction.NONE);
    verify(eventBus);
    assertEquals("Should be delete event.", StandardWatchEventKinds.ENTRY_DELETE, eventCapture.getValue().kind());
}

Example 3 with WatchEvent

use of java.nio.file.WatchEvent in project buck by facebook.

the class WatchmanWatcherIntegrationTest method globMatchesWholeName.

@Test
public void globMatchesWholeName() throws IOException, InterruptedException {
    WatchmanWatcher watcher = createWatchmanWatcher(new PathOrGlobMatcher("*.txt"));
    // Create a dot-file which should be ignored by the above glob.
    Path path = tmp.getRoot().getFileSystem().getPath("foo/bar/hello.txt");
    Files.createDirectories(tmp.getRoot().resolve(path).getParent());
    Files.write(tmp.getRoot().resolve(path), new byte[0]);
    // Verify we still get an event for the created path.
    watcher.postEvents(new BuckEventBus(new FakeClock(0), new BuildId()), WatchmanWatcher.FreshInstanceAction.NONE);
    ImmutableList<WatchEvent<?>> events = watchmanEventCollector.getEvents();
    assertThat(events.size(), Matchers.equalTo(1));
    WatchEvent<?> event = events.get(0);
    Path eventPath = (Path) event.context();
    assertThat(eventPath, Matchers.equalTo(path));
    assertSame(event.kind(), StandardWatchEventKinds.ENTRY_CREATE);
}

Example 4 with WatchEvent

use of java.nio.file.WatchEvent in project buck by facebook.

the class WatchmanWatcherTest method whenNameThenModifyEventIsGenerated.

@Test
public void whenNameThenModifyEventIsGenerated() throws IOException, InterruptedException {
    ImmutableMap<String, Object> watchmanOutput = ImmutableMap.of("files", ImmutableList.of(ImmutableMap.<String, Object>of("name", "foo/bar/baz")));
    Capture<WatchEvent<Path>> eventCapture = newCapture();
    EventBus eventBus = createStrictMock(EventBus.class);
    eventBus.post(capture(eventCapture));
    replay(eventBus);
    WatchmanWatcher watcher = createWatcher(eventBus, watchmanOutput);
    watcher.postEvents(BuckEventBusFactory.newInstance(new FakeClock(0)), WatchmanWatcher.FreshInstanceAction.NONE);
    verify(eventBus);
    assertEquals("Should be modify event.", StandardWatchEventKinds.ENTRY_MODIFY, eventCapture.getValue().kind());
    assertEquals("Path should match watchman output.", MorePaths.pathWithPlatformSeparators("foo/bar/baz"), eventCapture.getValue().context().toString());
}

Example 5 with WatchEvent

use of java.nio.file.WatchEvent in project buck by facebook.

the class WatchmanWatcherTest method whenMultipleFilesThenMultipleEventsGenerated.

@Test
public void whenMultipleFilesThenMultipleEventsGenerated() throws IOException, InterruptedException {
    ImmutableMap<String, Object> watchmanOutput = ImmutableMap.of("files", ImmutableList.of(ImmutableMap.<String, Object>of("name", "foo/bar/baz"), ImmutableMap.<String, Object>of("name", "foo/bar/boz")));
    EventBus eventBus = createStrictMock(EventBus.class);
    Capture<WatchEvent<Path>> firstEvent = newCapture();
    Capture<WatchEvent<Path>> secondEvent = newCapture();
    eventBus.post(capture(firstEvent));
    eventBus.post(capture(secondEvent));
    replay(eventBus);
    WatchmanWatcher watcher = createWatcher(eventBus, watchmanOutput);
    watcher.postEvents(BuckEventBusFactory.newInstance(new FakeClock(0)), WatchmanWatcher.FreshInstanceAction.NONE);
    verify(eventBus);
    assertEquals("Path should match watchman output.", MorePaths.pathWithPlatformSeparators("foo/bar/baz"), firstEvent.getValue().context().toString());
    assertEquals("Path should match watchman output.", MorePaths.pathWithPlatformSeparators("foo/bar/boz"), secondEvent.getValue().context().toString());
}