Examples with WatchOption io.etcd.jetcd.options.WatchOption used on opensource projects

Example 1 with WatchOption

use of io.etcd.jetcd.options.WatchOption in project jetcd by coreos.

the class WatchTest method testWatchFutureRevisionIsNotOverwrittenOnCreation.

@ParameterizedTest
@MethodSource("parameters")
public void testWatchFutureRevisionIsNotOverwrittenOnCreation(final Client client) throws Exception {
    final ByteSequence key = randomByteSequence();
    final ByteSequence value = randomByteSequence();
    final List<WatchResponse> events = Collections.synchronizedList(new ArrayList<>());
    PutResponse putResponse = client.getKVClient().put(key, value).get();
    long lastSeenRevision = putResponse.getHeader().getRevision();
    WatchOption watchOption = WatchOption.newBuilder().withRevision(lastSeenRevision + 1).build();
    try (Watcher watcher = client.getWatchClient().watch(key, watchOption, events::add)) {
        // resumes (recreates) the watch
        cluster.restart();
        // await().duration() would be better but it's broken
        Thread.sleep(2000);
        assertThat(events.isEmpty()).as("verify that received events list is empty").isTrue();
    }
}

Example 2 with WatchOption

use of io.etcd.jetcd.options.WatchOption in project jetcd by coreos.

the class CommandWatch method accept.

@Override
public void accept(Client client) throws Exception {
    CountDownLatch latch = new CountDownLatch(maxEvents);
    Watcher watcher = null;
    try {
        ByteSequence watchKey = ByteSequence.from(key, Charsets.UTF_8);
        WatchOption watchOpts = WatchOption.newBuilder().withRevision(rev).build();
        watcher = client.getWatchClient().watch(watchKey, watchOpts, response -> {
            for (WatchEvent event : response.getEvents()) {
                LOGGER.info("type={}, key={}, value={}", event.getEventType().toString(), Optional.ofNullable(event.getKeyValue().getKey()).map(bs -> bs.toString(Charsets.UTF_8)).orElse(""), Optional.ofNullable(event.getKeyValue().getValue()).map(bs -> bs.toString(Charsets.UTF_8)).orElse(""));
            }
            latch.countDown();
        });
        latch.await();
    } catch (Exception e) {
        if (watcher != null) {
            watcher.close();
        }
        throw e;
    }
}

Example 3 with WatchOption

use of io.etcd.jetcd.options.WatchOption in project jetcd by coreos.

the class WatchTest method testCancelledWatchGetsClosed.

@ParameterizedTest
@MethodSource("parameters")
public void testCancelledWatchGetsClosed(final Client client) throws Exception {
    final ByteSequence key = randomByteSequence();
    final Watch wc = client.getWatchClient();
    long revision = getCompactedRevision(client, key);
    final WatchOption options = WatchOption.newBuilder().withRevision(revision).build();
    final AtomicReference<Throwable> ref = new AtomicReference<>();
    final AtomicReference<Boolean> completed = new AtomicReference<>();
    Watch.Listener listener = Watch.listener(TestUtil::noOpWatchResponseConsumer, ref::set, () -> {
        completed.set(Boolean.TRUE);
    });
    try (Watcher watcher = wc.watch(key, options, listener)) {
        await().atMost(TIME_OUT_SECONDS, TimeUnit.SECONDS).untilAsserted(() -> assertThat(ref.get()).isNotNull());
        assertThat(ref.get().getClass()).isEqualTo(CompactedException.class);
        assertThat(completed.get()).isNotNull();
        assertThat(completed.get()).isEqualTo(Boolean.TRUE);
    }
}

Example 4 with WatchOption

use of io.etcd.jetcd.options.WatchOption in project jetcd by coreos.

the class WatchTest method testWatchCompacted.

@ParameterizedTest
@MethodSource("parameters")
public void testWatchCompacted(final Client client) throws Exception {
    final ByteSequence key = randomByteSequence();
    final AtomicReference<Throwable> ref = new AtomicReference<>();
    // Try to listen from previous revision on
    final WatchOption options = WatchOption.newBuilder().withRevision(getCompactedRevision(client, key)).build();
    final Watch wc = client.getWatchClient();
    try (Watcher watcher = wc.watch(key, options, Watch.listener(TestUtil::noOpWatchResponseConsumer, ref::set))) {
        await().atMost(TIME_OUT_SECONDS, TimeUnit.SECONDS).untilAsserted(() -> assertThat(ref.get()).isNotNull());
        assertThat(ref.get().getClass()).isEqualTo(CompactedException.class);
    }
}