Examples with ZeebeClientImpl io.zeebe.client.impl.ZeebeClientImpl used on opensource projects

Example 1 with ZeebeClientImpl

use of io.zeebe.client.impl.ZeebeClientImpl in project zeebe by zeebe-io.

the class EventLogger method main.

public static void main(String[] args) {
    final String brokerContactPoint = "127.0.0.1:51015";
    final Properties clientProperties = new Properties();
    clientProperties.put(ClientProperties.BROKER_CONTACTPOINT, brokerContactPoint);
    final ZeebeClient zeebeClient = new ZeebeClientImpl(clientProperties);
    System.out.println(String.format("> Connecting to %s", brokerContactPoint));
    final String topicName = "default-topic";
    System.out.println(String.format("> Open event subscription from topic '%s'", topicName));
    final TopicSubscription subscription = zeebeClient.topics().newSubscription(topicName).startAtHeadOfTopic().forcedStart().name("logger").handler(event -> {
        final EventMetadata metadata = event.getMetadata();
        System.out.println(String.format(">>> [topic: %d, position: %d, key: %d, type: %s]\n%s\n===", metadata.getPartitionId(), metadata.getPosition(), metadata.getKey(), metadata.getType(), event.getJson()));
    }).open();
    System.out.println("> Opened.");
    // wait for events
    try (Scanner scanner = new Scanner(System.in)) {
        while (scanner.hasNextLine()) {
            final String nextLine = scanner.nextLine();
            if (nextLine.contains("exit")) {
                System.out.println("> Closing...");
                subscription.close();
                zeebeClient.close();
                System.out.println("> Closed.");
                System.exit(0);
            }
        }
    }
}

Example 2 with ZeebeClientImpl

use of io.zeebe.client.impl.ZeebeClientImpl in project zeebe by zeebe-io.

the class TypedEventLogger method main.

public static void main(String[] args) {
    final String brokerContactPoint = "127.0.0.1:51015";
    final Properties clientProperties = new Properties();
    clientProperties.put(ClientProperties.BROKER_CONTACTPOINT, brokerContactPoint);
    final ZeebeClient zeebeClient = new ZeebeClientImpl(clientProperties);
    System.out.println(String.format("> Connecting to %s", brokerContactPoint));
    final String topicName = "default-topic";
    System.out.println(String.format("> Open event subscription from topic '%s'", topicName));
    final Consumer<Event> logger = e -> {
        System.out.println(e.getMetadata());
        System.out.println(e);
        System.out.println();
    };
    final TopicSubscription subscription = zeebeClient.topics().newSubscription(topicName).name("logger").startAtHeadOfTopic().forcedStart().workflowEventHandler(logger::accept).workflowInstanceEventHandler(logger::accept).taskEventHandler(logger::accept).incidentEventHandler(logger::accept).open();
    // wait for events
    try (Scanner scanner = new Scanner(System.in)) {
        while (scanner.hasNextLine()) {
            final String nextLine = scanner.nextLine();
            if (nextLine.contains("exit")) {
                System.out.println("> Closing...");
                subscription.close();
                zeebeClient.close();
                System.out.println("> Closed.");
                System.exit(0);
            }
        }
    }
}

Example 3 with ZeebeClientImpl

use of io.zeebe.client.impl.ZeebeClientImpl in project zeebe by zeebe-io.

the class ClientRule method interruptBrokerConnections.

public void interruptBrokerConnections() {
    final ClientTransport transport = ((ZeebeClientImpl) client).getTransport();
    transport.interruptAllChannels();
}

Example 4 with ZeebeClientImpl

use of io.zeebe.client.impl.ZeebeClientImpl in project zeebe by zeebe-io.

the class TaskSubscriptionTest method shouldRetryWithMoreTasksThanSubscriptionCapacity.

/**
 * This tests a case that should not occur under normal circumstances, but might occur
 * in case of inconsistencies between broker and client state (e.g. due to bugs in either of them)
 */
@Test
public void shouldRetryWithMoreTasksThanSubscriptionCapacity() throws InterruptedException {
    // given
    broker.stubTaskSubscriptionApi(123L);
    broker.onExecuteCommandRequest(EventType.TASK_EVENT, "COMPLETE").respondWith().key((r) -> r.key()).event().allOf((r) -> r.getCommand()).put("state", "COMPLETED").done().register();
    final WaitingTaskHandler handler = new WaitingTaskHandler();
    final Properties clientProperties = ((ZeebeClientImpl) client).getInitializationProperties();
    final int numExecutionThreads = Integer.parseInt(clientProperties.getProperty(ClientProperties.CLIENT_SUBSCRIPTION_EXECUTION_THREADS));
    final int taskCapacity = 4;
    clientRule.tasks().newTaskSubscription(clientRule.getDefaultTopicName()).handler(handler).lockOwner("owner").lockTime(1000L).taskFetchSize(taskCapacity).taskType("foo").open();
    final RemoteAddress clientAddress = broker.getReceivedControlMessageRequests().get(0).getSource();
    for (int i = 0; i < taskCapacity + numExecutionThreads; i++) {
        broker.pushLockedTask(clientAddress, 123L, i, i, "owner", "foo");
    }
    TestUtil.waitUntil(() -> handler.numWaitingThreads.get() > 0);
    // pushing one more event, exceeding client capacity
    broker.pushLockedTask(clientAddress, 123L, Integer.MAX_VALUE, Integer.MAX_VALUE, "owner", "foo");
    // waiting for the client to receive all pending tasks
    Thread.sleep(500L);
    // when
    handler.shouldWait = false;
    continueTaskHandlingThreads();
    // then the additional event is handled nevertheless (i.e. client applies backpressure)
    TestUtil.waitUntil(() -> handler.numHandledEvents.get() == taskCapacity + numExecutionThreads + 1);
}

Example 5 with ZeebeClientImpl

use of io.zeebe.client.impl.ZeebeClientImpl in project zeebe by zeebe-io.

the class WorkflowInstanceWorker method main.

public static void main(String[] args) {
    final String brokerContactPoint = "127.0.0.1:51015";
    final String topicName = "default-topic";
    final int partitionId = 0;
    final String taskType = "foo";
    final String lockOwner = "worker-1";
    final Properties clientProperties = new Properties();
    clientProperties.put(ClientProperties.BROKER_CONTACTPOINT, brokerContactPoint);
    final ZeebeClient zeebeClient = new ZeebeClientImpl(clientProperties);
    System.out.println(String.format("> Connecting to %s", brokerContactPoint));
    System.out.println(String.format("> Open task subscription for topic '%s', partition '%d' and type '%s'", topicName, partitionId, taskType));
    final TaskSubscription subscription = zeebeClient.tasks().newTaskSubscription(topicName).taskType(taskType).lockOwner(lockOwner).lockTime(Duration.ofSeconds(10)).handler((client, task) -> {
        System.out.println(String.format(">>> [type: %s, key: %s, lockExpirationTime: %s]\n[headers: %s]\n[payload: %s]\n===", task.getType(), task.getMetadata().getKey(), task.getLockExpirationTime().toString(), task.getHeaders(), task.getPayload()));
        client.complete(task).withoutPayload().execute();
    }).open();
    System.out.println("> Opened.");
    // wait for tasks
    try (Scanner scanner = new Scanner(System.in)) {
        while (scanner.hasNextLine()) {
            final String nextLine = scanner.nextLine();
            if (nextLine.contains("exit")) {
                System.out.println("> Closing...");
                subscription.close();
                zeebeClient.close();
                System.out.println("> Closed.");
                System.exit(0);
            }
        }
    }
}