Examples with Value com.ibm.streamsx.topology.logic.Value used on opensource projects

Example 6 with Value

use of com.ibm.streamsx.topology.logic.Value in project streamsx.topology by IBMStreams.

the class MqttStreamsTest method testMsgImplProducer.

@Test
public void testMsgImplProducer() throws Exception {
    checkAssumes();
    setupDebug();
    Topology top = new Topology("testMsgImplProducer");
    MsgGenerator mgen = new MsgGenerator(top.getName());
    String subClientId = newSubClientId(top.getName());
    String pubClientId = newPubClientId(top.getName());
    String topicVal = getMqttTopics()[0];
    Supplier<String> topic = new Value<String>(topicVal);
    List<Message> msgs = createMsgs(mgen, null);
    List<String> expectedAsString = mapList(modifyList(msgs, setTopic(topicVal)), msgToJSONStringFunc());
    // Test producer that takes TStream<SimpleMessage> and an explicit topic.
    MqttStreams producer = new MqttStreams(top, createConfig(pubClientId));
    MqttStreams consumer = new MqttStreams(top, createConfig(subClientId));
    TStream<Message> msgsToPublish = top.constants(msgs).modify(new InitialDelay<Message>(PUB_DELAY_MSEC));
    TSink sink = producer.publish(msgsToPublish, topic);
    TStream<Message> rcvdMsgs = consumer.subscribe(topic);
    // for validation...
    rcvdMsgs.print();
    // just our msgs
    rcvdMsgs = selectMsgs(rcvdMsgs, mgen.pattern());
    TStream<String> rcvdAsString = rcvdMsgs.transform(msgToJSONStringFunc());
    if (testBuildOnly(top))
        return;
    completeAndValidate(subClientId, top, rcvdAsString, SEC_TIMEOUT, expectedAsString.toArray(new String[0]));
    assertTrue(sink != null);
}

Example 7 with Value

use of com.ibm.streamsx.topology.logic.Value in project streamsx.topology by IBMStreams.

the class KafkaStreamsTest method testSubtypeImplicitTopicProducer.

@Test
public void testSubtypeImplicitTopicProducer() throws Exception {
    checkAssumes();
    Topology top = new Topology("testSubtypeImplicitTopicProducer");
    MsgGenerator mgen = new MsgGenerator(top.getName());
    String groupId = newGroupId(top.getName());
    String topicVal = getKafkaTopics()[0];
    Supplier<String> topic = new Value<String>(topicVal);
    KafkaProducer producer = new KafkaProducer(top, createProducerConfig());
    KafkaConsumer consumer = new KafkaConsumer(top, createConsumerConfig(groupId));
    // Test producer that takes a TStream<MyMsgSubtype> implicit topic
    List<MyMsgSubtype> msgs = new ArrayList<>();
    msgs.add(new MyMsgSubtype(mgen.create(topicVal, "Hello"), null, topicVal));
    msgs.add(new MyMsgSubtype(mgen.create(topicVal, "key1", "Are you there?"), "key1", topicVal));
    TStream<MyMsgSubtype> msgsToPublish = top.constants(msgs).asType(MyMsgSubtype.class);
    msgsToPublish = msgsToPublish.modify(new InitialDelay<MyMsgSubtype>(PUB_DELAY_MSEC));
    producer.publish(msgsToPublish);
    TStream<Message> rcvdMsgs = consumer.subscribe(topic);
    // for validation...
    rcvdMsgs.print();
    // just our msgs
    rcvdMsgs = selectMsgs(rcvdMsgs, mgen.pattern());
    TStream<String> rcvdAsString = rcvdMsgs.transform(msgToJSONStringFunc());
    List<String> expectedAsString = mapList(msgs, subtypeMsgToJSONStringFunc(null));
    setupDebug();
    if (testBuildOnly(top))
        return;
    completeAndValidate(groupId, top, rcvdAsString, SEC_TIMEOUT, expectedAsString.toArray(new String[0]));
}

Example 8 with Value

use of com.ibm.streamsx.topology.logic.Value in project streamsx.topology by IBMStreams.

the class KafkaStreamsTest method testExplicitTopicProducer.

@Test
public void testExplicitTopicProducer() throws Exception {
    checkAssumes();
    Topology top = new Topology("testNewExplicitTopicProducer");
    MsgGenerator mgen = new MsgGenerator(top.getName());
    String groupId = newGroupId(top.getName());
    String topicVal = getKafkaTopics()[0];
    Supplier<String> topic = new Value<String>(topicVal);
    KafkaProducer producer = new KafkaProducer(top, createProducerConfig());
    KafkaConsumer consumer = new KafkaConsumer(top, createConsumerConfig(groupId));
    // Test producer that takes an arbitrary TStream<T> and explicit topic
    List<Vals> msgs = new ArrayList<>();
    msgs.add(new Vals(mgen.create(topicVal, "Hello"), null, null));
    msgs.add(new Vals(mgen.create(topicVal, "key1", "Are you there?"), "key1", null));
    msgs.add(new Vals(mgen.create(topicVal, "Msg with an empty key"), "", null));
    msgs.add(new Vals("", mgen.create(topicVal, null, "Msg with an empty msg (this is the key)"), null));
    TStream<Vals> valsToPublish = top.constants(msgs).asType(Vals.class);
    TStream<Message> msgsToPublish = valsToPublish.transform(msgFromValsFunc(null));
    msgsToPublish = msgsToPublish.modify(new InitialDelay<Message>(PUB_DELAY_MSEC));
    producer.publish(msgsToPublish, topic);
    TStream<Message> rcvdMsgs = consumer.subscribe(topic);
    // for validation...
    rcvdMsgs.print();
    // just our msgs
    rcvdMsgs = selectMsgs(rcvdMsgs, mgen.pattern());
    TStream<String> rcvdAsString = rcvdMsgs.transform(msgToJSONStringFunc());
    List<Message> expectedAsMessage = mapList(msgs, msgFromValsFunc(topicVal));
    expectedAsMessage = modifyList(expectedAsMessage, adjustKey());
    List<String> expectedAsString = mapList(expectedAsMessage, msgToJSONStringFunc());
    setupDebug();
    if (testBuildOnly(top))
        return;
    completeAndValidate(groupId, top, rcvdAsString, SEC_TIMEOUT, expectedAsString.toArray(new String[0]));
}

Example 9 with Value

use of com.ibm.streamsx.topology.logic.Value in project streamsx.topology by IBMStreams.

the class KafkaConsumer method subscribe.

/**
     * Subscribe to a topic and create a stream of messages.
     * <p>
     * N.B., A topology that includes this will not support
     * {@code StreamsContext.Type.EMBEDDED}.
     * <p>
     * N.B. due to com.ibm.streamsx.messaging 
     * <a href="https://github.com/IBMStreams/streamsx.messaging/issues/118">issue#118</a>,
     * multiple consumers will have issues in
     * {@code StreamsContext.Type.STANDALONE}.
     * <p>
     * N.B. due to com.ibm.streamsx.messaging 
     * <a href="https://github.com/IBMStreams/streamsx.messaging/issues/117">issue#117</a>,
     * a consumer in {@code StreamsContext.Type.STANDALONE} subsequently results
     * in an orphaned @{code standalone} processes that continues as the lead
     * group/topic consumer thereby preventing subsequent instances of the
     * group/topic consumer from receiving messages. 
     * <p>
     * N.B. due to com.ibm.streamsx.messaging 
     * <a href="https://github.com/IBMStreams/streamsx.messaging/issues/114">issue#114</a>,
     * a consumer essentially ignores messages generated by producers where the
     * optional {@code key} is {@code null}.
     * e.g., Kafka's {@code kafka-console-producer.sh} tool generates
     * {@code key==null} messages.
     *
     * @param threadsPerTopic number of threads to allocate to processing each
     *        topic.  May be a submission parameter.
     * @param topic the topic to subscribe to.  May be a submission parameter.
     * @return TStream&lt;Message>
     *      The generated {@code Message} tuples have a non-null {@code topic}.
     *      The tuple's {@code key} will be null if the Kafka message
     *      lacked a key or it's key was the empty string. 
     * @throws IllegalArgumentException if topic is null.
     * @throws IllegalArgumentException if threadsPerTopic is null.
     * @see Value
     * @see Topology#createSubmissionParameter(String, Class)
     */
public TStream<Message> subscribe(Supplier<Integer> threadsPerTopic, Supplier<String> topic) {
    if (topic == null)
        throw new IllegalArgumentException("topic");
    if (threadsPerTopic == null || (threadsPerTopic.get() != null && threadsPerTopic.get() <= 0))
        throw new IllegalArgumentException("threadsPerTopic");
    Map<String, Object> params = new HashMap<>();
    params.put("topic", topic);
    if (threadsPerTopic instanceof Value && threadsPerTopic.get() == 1)
        // The default is one.
        ;
    else
        params.put("threadsPerTopic", threadsPerTopic);
    if (!config.isEmpty())
        params.put("kafkaProperty", Util.toKafkaProperty(config));
    // workaround streamsx.messaging issue #107
    params.put("propertiesFile", PROP_FILE_PARAM);
    addPropertiesFile();
    // Use SPL.invoke to avoid adding a compile time dependency
    // to com.ibm.streamsx.messaging since JavaPrimitive.invoke*()
    // lack "kind" based variants.
    String kind = "com.ibm.streamsx.messaging.kafka::KafkaConsumer";
    String className = "com.ibm.streamsx.messaging.kafka.KafkaSource";
    SPLStream rawKafka = SPL.invokeSource(te, kind, params, KafkaSchemas.KAFKA);
    SPL.tagOpAsJavaPrimitive(toOp(rawKafka), kind, className);
    TStream<Message> rcvdMsgs = toMessageStream(rawKafka);
    rcvdMsgs.colocate(rawKafka);
    // workaround streamsx.messaging issue#118 w/java8
    // isolate even in the single consumer case since we don't
    // know if others may be subsequently created.
    rcvdMsgs = rcvdMsgs.isolate();
    return rcvdMsgs;
}

Example 10 with Value

use of com.ibm.streamsx.topology.logic.Value in project streamsx.topology by IBMStreams.

the class KafkaStreamsTest method testSubtypeExplicitTopicProducer.

@Test
public void testSubtypeExplicitTopicProducer() throws Exception {
    checkAssumes();
    Topology top = new Topology("testSubtypeExplicitTopicProducer");
    MsgGenerator mgen = new MsgGenerator(top.getName());
    String groupId = newGroupId(top.getName());
    String topicVal = getKafkaTopics()[0];
    Supplier<String> topic = new Value<String>(topicVal);
    KafkaProducer producer = new KafkaProducer(top, createProducerConfig());
    KafkaConsumer consumer = new KafkaConsumer(top, createConsumerConfig(groupId));
    // Test producer that takes a TStream<MyMsgSubtype>
    List<MyMsgSubtype> msgs = new ArrayList<>();
    msgs.add(new MyMsgSubtype(mgen.create(topicVal, "Hello")));
    msgs.add(new MyMsgSubtype(mgen.create(topicVal, "key1", "Are you there?"), "key1"));
    TStream<MyMsgSubtype> msgsToPublish = top.constants(msgs).asType(MyMsgSubtype.class);
    msgsToPublish = msgsToPublish.modify(new InitialDelay<MyMsgSubtype>(PUB_DELAY_MSEC));
    producer.publish(msgsToPublish, topic);
    TStream<Message> rcvdMsgs = consumer.subscribe(topic);
    // for validation...
    rcvdMsgs.print();
    // just our msgs
    rcvdMsgs = selectMsgs(rcvdMsgs, mgen.pattern());
    TStream<String> rcvdAsString = rcvdMsgs.transform(msgToJSONStringFunc());
    List<String> expectedAsString = mapList(msgs, subtypeMsgToJSONStringFunc(topicVal));
    setupDebug();
    if (testBuildOnly(top))
        return;
    completeAndValidate(groupId, top, rcvdAsString, SEC_TIMEOUT, expectedAsString.toArray(new String[0]));
}