Examples with Watcher io.etcd.jetcd.Watch.Watcher used on opensource projects

Example 1 with Watcher

use of io.etcd.jetcd.Watch.Watcher in project jetcd by coreos.

the class WatchErrorTest method testWatchOnError.

@ParameterizedTest
@ValueSource(strings = { "test-namespace/", "" })
public void testWatchOnError(String ns) {
    final Client client = ns != null && ns.length() == 0 ? TestUtil.client(cluster).namespace(bytesOf(ns)).build() : TestUtil.client(cluster).build();
    final ByteSequence key = randomByteSequence();
    final List<Throwable> events = Collections.synchronizedList(new ArrayList<>());
    try (Watcher watcher = client.getWatchClient().watch(key, TestUtil::noOpWatchResponseConsumer, events::add)) {
        cluster.cluster().stop();
        await().atMost(15, TimeUnit.SECONDS).untilAsserted(() -> assertThat(events).isNotEmpty());
    }
    assertThat(events).allMatch(EtcdException.class::isInstance);
}

Example 2 with Watcher

use of io.etcd.jetcd.Watch.Watcher in project jetcd by coreos.

the class WatchTest method testWatchOnDelete.

@ParameterizedTest
@MethodSource("parameters")
public void testWatchOnDelete(final Client client) throws Exception {
    final ByteSequence key = randomByteSequence();
    final ByteSequence value = randomByteSequence();
    final AtomicReference<WatchResponse> ref = new AtomicReference<>();
    client.getKVClient().put(key, value).get();
    try (Watcher watcher = client.getWatchClient().watch(key, ref::set)) {
        client.getKVClient().delete(key).get();
        await().atMost(TIME_OUT_SECONDS, TimeUnit.SECONDS).untilAsserted(() -> assertThat(ref.get()).isNotNull());
        assertThat(ref.get().getEvents().size()).isEqualTo(1);
        WatchEvent event = ref.get().getEvents().get(0);
        assertThat(event.getEventType()).isEqualTo(EventType.DELETE);
        assertThat(Arrays.equals(event.getKeyValue().getKey().getBytes(), key.getBytes())).isTrue();
    }
}

Example 3 with Watcher

use of io.etcd.jetcd.Watch.Watcher 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 4 with Watcher

use of io.etcd.jetcd.Watch.Watcher in project jetcd by coreos.

the class WatchTest method testNamespacedAndNotNamespacedClient.

@Test
public void testNamespacedAndNotNamespacedClient() throws Exception {
    final ByteSequence key = randomByteSequence();
    final ByteSequence nsKey = ByteSequence.from(namespace.concat(key).getBytes());
    final Client client = TestUtil.client(cluster).build();
    final Client nsClient = TestUtil.client(cluster).namespace(namespace).build();
    final ByteSequence value = randomByteSequence();
    final AtomicReference<WatchResponse> ref = new AtomicReference<>();
    // From client with namespace watch for key. Since client is namespaced it should watch for namespaced key.
    try (Watcher watcher = nsClient.getWatchClient().watch(key, ref::set)) {
        // Using non-namespaced client put namespaced key.
        client.getKVClient().put(nsKey, value).get();
        await().atMost(TIME_OUT_SECONDS, TimeUnit.SECONDS).untilAsserted(() -> assertThat(ref.get()).isNotNull());
        assertThat(ref.get()).isNotNull();
        assertThat(ref.get().getEvents().size()).isEqualTo(1);
        assertThat(ref.get().getEvents().get(0).getEventType()).isEqualTo(EventType.PUT);
        assertThat(ref.get().getEvents().get(0).getKeyValue().getKey()).isEqualTo(key);
    }
}

Example 5 with Watcher

use of io.etcd.jetcd.Watch.Watcher in project jetcd by coreos.

the class WatchResumeTest method testWatchOnPut.

@Test
public void testWatchOnPut() throws Exception {
    try (Client client = TestUtil.client(cluster).build()) {
        Watch watchClient = client.getWatchClient();
        KV kvClient = client.getKVClient();
        final ByteSequence key = TestUtil.randomByteSequence();
        final ByteSequence value = TestUtil.randomByteSequence();
        final AtomicReference<WatchResponse> ref = new AtomicReference<>();
        try (Watcher watcher = watchClient.watch(key, ref::set)) {
            cluster.restart();
            kvClient.put(key, value).get(1, TimeUnit.SECONDS);
            await().atMost(30, TimeUnit.SECONDS).untilAsserted(() -> assertThat(ref.get()).isNotNull());
            assertThat(ref.get().getEvents().size()).isEqualTo(1);
            assertThat(ref.get().getEvents().get(0).getEventType()).isEqualTo(EventType.PUT);
            assertThat(ref.get().getEvents().get(0).getKeyValue().getKey()).isEqualTo(key);
        }
    }
}