Examples with GlobalStateProcessor io.kestra.runner.kafka.streams.GlobalStateProcessor used on opensource projects

Example 1 with GlobalStateProcessor

use of io.kestra.runner.kafka.streams.GlobalStateProcessor in project kestra by kestra-io.

the class ExecutorWorkerRunning method topology.

public StreamsBuilder topology() {
    StreamsBuilder builder = new KafkaStreamsBuilder();
    builder.addGlobalStore(Stores.keyValueStoreBuilder(Stores.persistentKeyValueStore(WORKERINSTANCE_STATE_STORE_NAME), Serdes.String(), JsonSerde.of(WorkerInstance.class)), kafkaAdminService.getTopicName(KafkaStreamSourceService.TOPIC_EXECUTOR_WORKERINSTANCE), Consumed.with(Serdes.String(), JsonSerde.of(WorkerInstance.class)).withName("GlobalStore.ExecutorWorkerInstance"), () -> new GlobalStateProcessor<>(WORKERINSTANCE_STATE_STORE_NAME));
    // only used as state store
    builder.globalTable(kafkaAdminService.getTopicName(WorkerTaskRunning.class), Consumed.with(Serdes.String(), JsonSerde.of(WorkerTaskRunning.class)).withName("GlobalKTable.WorkerTaskRunning"), Materialized.<String, WorkerTaskRunning, KeyValueStore<Bytes, byte[]>>as(WORKER_RUNNING_STATE_STORE_NAME).withKeySerde(Serdes.String()).withValueSerde(JsonSerde.of(WorkerTaskRunning.class)));
    KStream<String, WorkerInstance> workerInstanceKStream = builder.stream(kafkaAdminService.getTopicName(WorkerInstance.class), Consumed.with(Serdes.String(), JsonSerde.of(WorkerInstance.class)).withName("KStream.WorkerInstance"));
    workerInstanceKStream.to(kafkaAdminService.getTopicName(TOPIC_EXECUTOR_WORKERINSTANCE), Produced.with(Serdes.String(), JsonSerde.of(WorkerInstance.class)).withName("DetectNewWorker.toExecutorWorkerInstance"));
    KStream<String, WorkerInstanceTransformer.Result> stream = workerInstanceKStream.transformValues(WorkerInstanceTransformer::new, Named.as("DetectNewWorker.workerInstanceTransformer")).flatMapValues((readOnlyKey, value) -> value, Named.as("DetectNewWorker.flapMapList"));
    // we resend the worker task from evicted worker
    KStream<String, WorkerTask> resultWorkerTask = stream.flatMapValues((readOnlyKey, value) -> value.getWorkerTasksToSend(), Named.as("DetectNewWorkerTask.flapMapWorkerTaskToSend"));
    // and remove from running since already sent
    resultWorkerTask.map((key, value) -> KeyValue.pair(value.getTaskRun().getId(), (WorkerTaskRunning) null), Named.as("DetectNewWorkerTask.workerTaskRunningToNull")).to(kafkaAdminService.getTopicName(WorkerTaskRunning.class), Produced.with(Serdes.String(), JsonSerde.of(WorkerTaskRunning.class)).withName("DetectNewWorker.toWorkerTaskRunning"));
    KafkaStreamSourceService.logIfEnabled(log, resultWorkerTask, (key, value) -> executorService.log(log, false, value), "DetectNewWorkerTask").to(kafkaAdminService.getTopicName(WorkerTask.class), Produced.with(Serdes.String(), JsonSerde.of(WorkerTask.class)).withName("DetectNewWorkerTask.toWorkerTask"));
    // we resend the WorkerInstance update
    KStream<String, WorkerInstance> updatedStream = KafkaStreamSourceService.logIfEnabled(log, stream, (key, value) -> log.debug("Instance updated: {}", value), "DetectNewWorkerInstance").map((key, value) -> value.getWorkerInstanceUpdated(), Named.as("DetectNewWorkerInstance.mapInstance"));
    // cleanup executor workerinstance state store
    updatedStream.filter((key, value) -> value != null, Named.as("DetectNewWorkerInstance.filterNotNull")).to(kafkaAdminService.getTopicName(TOPIC_EXECUTOR_WORKERINSTANCE), Produced.with(Serdes.String(), JsonSerde.of(WorkerInstance.class)).withName("DetectNewWorkerInstance.toExecutorWorkerInstance"));
    updatedStream.to(kafkaAdminService.getTopicName(WorkerInstance.class), Produced.with(Serdes.String(), JsonSerde.of(WorkerInstance.class)).withName("DetectNewWorkerInstance.toWorkerInstance"));
    return builder;
}