Examples with StreamingRuntimeContext org.apache.flink.streaming.api.operators.StreamingRuntimeContext used on opensource projects

Example 21 with StreamingRuntimeContext

use of org.apache.flink.streaming.api.operators.StreamingRuntimeContext in project flink by apache.

the class SpoutWrapperTest method runAndExecuteFiniteSpout2.

@SuppressWarnings("unchecked")
@Test
public void runAndExecuteFiniteSpout2() throws Exception {
    final FiniteSpout stormSpout = mock(FiniteSpout.class);
    when(stormSpout.reachedEnd()).thenReturn(true, false, true, false, true, false, true);
    final StreamingRuntimeContext taskContext = mock(StreamingRuntimeContext.class);
    when(taskContext.getExecutionConfig()).thenReturn(mock(ExecutionConfig.class));
    when(taskContext.getTaskName()).thenReturn("name");
    final SpoutWrapper<?> wrapper = new SpoutWrapper<Object>(stormSpout);
    wrapper.setRuntimeContext(taskContext);
    wrapper.run(mock(SourceContext.class));
    verify(stormSpout, never()).nextTuple();
}

Example 22 with StreamingRuntimeContext

use of org.apache.flink.streaming.api.operators.StreamingRuntimeContext in project rocketmq-externals by apache.

the class RocketMQSink method open.

@Override
public void open(Configuration parameters) throws Exception {
    Validate.notEmpty(props, "Producer properties can not be empty");
    Validate.notNull(topicSelector, "TopicSelector can not be null");
    Validate.notNull(serializationSchema, "KeyValueSerializationSchema can not be null");
    producer = new DefaultMQProducer();
    producer.setInstanceName(String.valueOf(getRuntimeContext().getIndexOfThisSubtask()));
    RocketMQConfig.buildProducerConfigs(props, producer);
    batchList = new LinkedList<>();
    if (batchFlushOnCheckpoint && !((StreamingRuntimeContext) getRuntimeContext()).isCheckpointingEnabled()) {
        LOG.warn("Flushing on checkpoint is enabled, but checkpointing is not enabled. Disabling flushing.");
        batchFlushOnCheckpoint = false;
    }
    try {
        producer.start();
    } catch (MQClientException e) {
        throw new RuntimeException(e);
    }
}

Example 23 with StreamingRuntimeContext

use of org.apache.flink.streaming.api.operators.StreamingRuntimeContext in project flink by apache.

the class JobManagerWatermarkTracker method open.

@Override
public void open(RuntimeContext context) {
    super.open(context);
    this.aggregateFunction.updateTimeoutMillis = super.getUpdateTimeoutMillis();
    this.aggregateFunction.logAccumulatorIntervalMillis = logAccumulatorIntervalMillis;
    Preconditions.checkArgument(context instanceof StreamingRuntimeContext);
    StreamingRuntimeContext runtimeContext = (StreamingRuntimeContext) context;
    this.aggregateManager = runtimeContext.getGlobalAggregateManager();
}

Example 24 with StreamingRuntimeContext

use of org.apache.flink.streaming.api.operators.StreamingRuntimeContext in project flink by apache.

the class FlinkKafkaProducer method initializeState.

@Override
public void initializeState(FunctionInitializationContext context) throws Exception {
    if (semantic != FlinkKafkaProducer.Semantic.NONE && !((StreamingRuntimeContext) this.getRuntimeContext()).isCheckpointingEnabled()) {
        LOG.warn("Using {} semantic, but checkpointing is not enabled. Switching to {} semantic.", semantic, FlinkKafkaProducer.Semantic.NONE);
        semantic = FlinkKafkaProducer.Semantic.NONE;
    }
    nextTransactionalIdHintState = context.getOperatorStateStore().getUnionListState(NEXT_TRANSACTIONAL_ID_HINT_DESCRIPTOR_V2);
    if (context.getOperatorStateStore().getRegisteredStateNames().contains(NEXT_TRANSACTIONAL_ID_HINT_DESCRIPTOR)) {
        migrateNextTransactionalIdHindState(context);
    }
    String actualTransactionalIdPrefix;
    if (this.transactionalIdPrefix != null) {
        actualTransactionalIdPrefix = this.transactionalIdPrefix;
    } else {
        String taskName = getRuntimeContext().getTaskName();
        // a short, so we truncate here if necessary to a more reasonable length string.
        if (taskName.length() > maxTaskNameSize) {
            taskName = taskName.substring(0, maxTaskNameSize);
            LOG.warn("Truncated task name for Kafka TransactionalId from {} to {}.", getRuntimeContext().getTaskName(), taskName);
        }
        actualTransactionalIdPrefix = taskName + "-" + ((StreamingRuntimeContext) getRuntimeContext()).getOperatorUniqueID();
    }
    transactionalIdsGenerator = new TransactionalIdsGenerator(actualTransactionalIdPrefix, getRuntimeContext().getIndexOfThisSubtask(), getRuntimeContext().getNumberOfParallelSubtasks(), kafkaProducersPoolSize, SAFE_SCALE_DOWN_FACTOR);
    if (semantic != FlinkKafkaProducer.Semantic.EXACTLY_ONCE) {
        nextTransactionalIdHint = null;
    } else {
        ArrayList<FlinkKafkaProducer.NextTransactionalIdHint> transactionalIdHints = Lists.newArrayList(nextTransactionalIdHintState.get());
        if (transactionalIdHints.size() > 1) {
            throw new IllegalStateException("There should be at most one next transactional id hint written by the first subtask");
        } else if (transactionalIdHints.size() == 0) {
            nextTransactionalIdHint = new FlinkKafkaProducer.NextTransactionalIdHint(0, 0);
            // this means that this is either:
            // (1) the first execution of this application
            // (2) previous execution has failed before first checkpoint completed
            // 
            // in case of (2) we have to abort all previous transactions
            abortTransactions(transactionalIdsGenerator.generateIdsToAbort());
        } else {
            nextTransactionalIdHint = transactionalIdHints.get(0);
        }
    }
    super.initializeState(context);
}

Example 25 with StreamingRuntimeContext

use of org.apache.flink.streaming.api.operators.StreamingRuntimeContext in project flink by apache.

the class KinesisDataFetcher method runFetcher.

/**
 * Starts the fetcher. After starting the fetcher, it can only be stopped by calling {@link
 * KinesisDataFetcher#shutdownFetcher()}.
 *
 * @throws Exception the first error or exception thrown by the fetcher or any of the threads
 *     created by the fetcher.
 */
public void runFetcher() throws Exception {
    // check that we are running before proceeding
    if (!running) {
        return;
    }
    // ------------------------------------------------------------------------
    // Procedures before starting the infinite while loop:
    // ------------------------------------------------------------------------
    // 1. check that there is at least one shard in the subscribed streams to consume from (can
    // be done by
    // checking if at least one value in subscribedStreamsToLastDiscoveredShardIds is not
    // null)
    boolean hasShards = false;
    StringBuilder streamsWithNoShardsFound = new StringBuilder();
    for (Map.Entry<String, String> streamToLastDiscoveredShardEntry : subscribedStreamsToLastDiscoveredShardIds.entrySet()) {
        if (streamToLastDiscoveredShardEntry.getValue() != null) {
            hasShards = true;
        } else {
            streamsWithNoShardsFound.append(streamToLastDiscoveredShardEntry.getKey()).append(", ");
        }
    }
    if (streamsWithNoShardsFound.length() != 0 && LOG.isWarnEnabled()) {
        LOG.warn("Subtask {} has failed to find any shards for the following subscribed streams: {}", indexOfThisConsumerSubtask, streamsWithNoShardsFound.toString());
    }
    if (!hasShards) {
        throw new RuntimeException("No shards can be found for all subscribed streams: " + streams);
    }
    // consumer using a restored state checkpoint
    for (int seededStateIndex = 0; seededStateIndex < subscribedShardsState.size(); seededStateIndex++) {
        KinesisStreamShardState seededShardState = subscribedShardsState.get(seededStateIndex);
        // read already
        if (!seededShardState.getLastProcessedSequenceNum().equals(SentinelSequenceNumber.SENTINEL_SHARD_ENDING_SEQUENCE_NUM.get())) {
            if (LOG.isInfoEnabled()) {
                LOG.info("Subtask {} will start consuming seeded shard {} from sequence number {} with ShardConsumer {}", indexOfThisConsumerSubtask, seededShardState.getStreamShardHandle().toString(), seededShardState.getLastProcessedSequenceNum(), seededStateIndex);
            }
            StreamShardHandle streamShardHandle = subscribedShardsState.get(seededStateIndex).getStreamShardHandle();
            KinesisDeserializationSchema<T> shardDeserializationSchema = getClonedDeserializationSchema();
            shardDeserializationSchema.open(RuntimeContextInitializationContextAdapters.deserializationAdapter(runtimeContext, // ignore the provided metric group
            metricGroup -> consumerMetricGroup.addGroup("subtaskId", String.valueOf(indexOfThisConsumerSubtask)).addGroup("shardId", streamShardHandle.getShard().getShardId()).addGroup("user")));
            shardConsumersExecutor.submit(createShardConsumer(seededStateIndex, streamShardHandle, subscribedShardsState.get(seededStateIndex).getLastProcessedSequenceNum(), registerShardMetricGroup(consumerMetricGroup, subscribedShardsState.get(seededStateIndex)), shardDeserializationSchema));
        }
    }
    // start periodic watermark emitter, if a watermark assigner was configured
    if (periodicWatermarkAssigner != null) {
        long periodicWatermarkIntervalMillis = runtimeContext.getExecutionConfig().getAutoWatermarkInterval();
        if (periodicWatermarkIntervalMillis > 0) {
            ProcessingTimeService timerService = ((StreamingRuntimeContext) runtimeContext).getProcessingTimeService();
            LOG.info("Starting periodic watermark emitter with interval {}", periodicWatermarkIntervalMillis);
            new PeriodicWatermarkEmitter(timerService, periodicWatermarkIntervalMillis).start();
            if (watermarkTracker != null) {
                // setup global watermark tracking
                long watermarkSyncMillis = Long.parseLong(getConsumerConfiguration().getProperty(ConsumerConfigConstants.WATERMARK_SYNC_MILLIS, Long.toString(ConsumerConfigConstants.DEFAULT_WATERMARK_SYNC_MILLIS)));
                watermarkTracker.setUpdateTimeoutMillis(// synchronization latency
                watermarkSyncMillis * 3);
                watermarkTracker.open(runtimeContext);
                new WatermarkSyncCallback(timerService, watermarkSyncMillis).start();
                // emit records ahead of watermark to offset synchronization latency
                long lookaheadMillis = Long.parseLong(getConsumerConfiguration().getProperty(ConsumerConfigConstants.WATERMARK_LOOKAHEAD_MILLIS, Long.toString(0)));
                recordEmitter.setMaxLookaheadMillis(Math.max(lookaheadMillis, watermarkSyncMillis * 3));
                // record emitter depends on periodic watermark
                // it runs in a separate thread since main thread is used for discovery
                Runnable recordEmitterRunnable = new Runnable() {

                    @Override
                    public void run() {
                        try {
                            recordEmitter.run();
                        } catch (Throwable error) {
                            // report the error that terminated the emitter loop to
                            // source thread
                            stopWithError(error);
                        }
                    }
                };
                Thread thread = new Thread(recordEmitterRunnable);
                thread.setName("recordEmitter-" + runtimeContext.getTaskNameWithSubtasks());
                thread.setDaemon(true);
                thread.start();
            }
        }
        this.shardIdleIntervalMillis = Long.parseLong(getConsumerConfiguration().getProperty(ConsumerConfigConstants.SHARD_IDLE_INTERVAL_MILLIS, Long.toString(ConsumerConfigConstants.DEFAULT_SHARD_IDLE_INTERVAL_MILLIS)));
    }
    // ------------------------------------------------------------------------
    // finally, start the infinite shard discovery and consumer launching loop;
    // we will escape from this loop only when shutdownFetcher() or stopWithError() is called
    // TODO: have this thread emit the records for tracking backpressure
    final long discoveryIntervalMillis = Long.parseLong(configProps.getProperty(ConsumerConfigConstants.SHARD_DISCOVERY_INTERVAL_MILLIS, Long.toString(ConsumerConfigConstants.DEFAULT_SHARD_DISCOVERY_INTERVAL_MILLIS)));
    if (this.numberOfActiveShards.get() == 0) {
        LOG.info("Subtask {} has no active shards to read on startup; marking the subtask as temporarily idle ...", indexOfThisConsumerSubtask);
        sourceContext.markAsTemporarilyIdle();
    }
    while (running) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Subtask {} is trying to discover new shards that were created due to resharding ...", indexOfThisConsumerSubtask);
        }
        List<StreamShardHandle> newShardsDueToResharding = discoverNewShardsToSubscribe();
        for (StreamShardHandle shard : newShardsDueToResharding) {
            // since there may be delay in discovering a new shard, all new shards due to
            // resharding should be read starting from the earliest record possible
            KinesisStreamShardState newShardState = new KinesisStreamShardState(convertToStreamShardMetadata(shard), shard, SentinelSequenceNumber.SENTINEL_EARLIEST_SEQUENCE_NUM.get());
            int newStateIndex = registerNewSubscribedShardState(newShardState);
            if (LOG.isInfoEnabled()) {
                LOG.info("Subtask {} has discovered a new shard {} due to resharding, and will start consuming " + "the shard from sequence number {} with ShardConsumer {}", indexOfThisConsumerSubtask, newShardState.getStreamShardHandle().toString(), newShardState.getLastProcessedSequenceNum(), newStateIndex);
            }
            StreamShardHandle streamShardHandle = newShardState.getStreamShardHandle();
            KinesisDeserializationSchema<T> shardDeserializationSchema = getClonedDeserializationSchema();
            shardDeserializationSchema.open(RuntimeContextInitializationContextAdapters.deserializationAdapter(runtimeContext, // ignore the provided metric group
            metricGroup -> consumerMetricGroup.addGroup("subtaskId", String.valueOf(indexOfThisConsumerSubtask)).addGroup("shardId", streamShardHandle.getShard().getShardId()).addGroup("user")));
            shardConsumersExecutor.submit(createShardConsumer(newStateIndex, newShardState.getStreamShardHandle(), newShardState.getLastProcessedSequenceNum(), registerShardMetricGroup(consumerMetricGroup, newShardState), shardDeserializationSchema));
        }
        // interval if the running flag was set to false during the middle of the while loop
        if (running && discoveryIntervalMillis != 0) {
            try {
                cancelFuture.get(discoveryIntervalMillis, TimeUnit.MILLISECONDS);
                LOG.debug("Cancelled discovery");
            } catch (TimeoutException iex) {
            // timeout is expected when fetcher is not cancelled
            }
        }
    }
    // make sure all resources have been terminated before leaving
    try {
        awaitTermination();
    } catch (InterruptedException ie) {
        // If there is an original exception, preserve it, since that's more important/useful.
        this.error.compareAndSet(null, ie);
    }
    // any error thrown in the shard consumer threads will be thrown to the main thread
    Throwable throwable = this.error.get();
    if (throwable != null) {
        if (throwable instanceof Exception) {
            throw (Exception) throwable;
        } else if (throwable instanceof Error) {
            throw (Error) throwable;
        } else {
            throw new Exception(throwable);
        }
    }
}