Package com.linkedin.davinci.kafka.consumer

Class AggKafkaConsumerService

java.lang.Object

com.linkedin.venice.service.AbstractVeniceService

com.linkedin.davinci.kafka.consumer.AggKafkaConsumerService

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class AggKafkaConsumerService
extends AbstractVeniceService

AggKafkaConsumerService supports Kafka consumer pool for multiple Kafka clusters from different data centers; for each Kafka bootstrap server url, AggKafkaConsumerService will create one KafkaConsumerService.

Nested Class Summary

Nested classes/interfaces inherited from class com.linkedin.venice.service.AbstractVeniceService

AbstractVeniceService.ServiceState

Field Summary

Fields inherited from class com.linkedin.venice.service.AbstractVeniceService

logger, serviceState

Constructor Summary

Constructors

Constructor

Description

AggKafkaConsumerService(PubSubConsumerAdapterFactory consumerFactory, TopicManagerContext.PubSubPropertiesSupplier pubSubPropertiesSupplier, VeniceServerConfig serverConfig, EventThrottler bandwidthThrottler, EventThrottler recordsThrottler, KafkaClusterBasedRecordThrottler kafkaClusterBasedRecordThrottler, io.tehuti.metrics.MetricsRepository metricsRepository, TopicExistenceChecker topicExistenceChecker, PubSubMessageDeserializer pubSubDeserializer, java.util.function.Consumer<java.lang.String> killIngestionTaskRunnable, java.util.function.Function<java.lang.String,java.lang.Boolean> isAAOrWCEnabledFunc, ReadOnlyStoreRepository metadataRepository)

Method Summary

Modifier and Type	Method	Description
AbstractKafkaConsumerService	createKafkaConsumerService(java.util.Properties consumerProperties)	Create a new KafkaConsumerService given consumerProperties which must contain a value for "bootstrap.servers".
long	getLatestOffsetBasedOnMetrics(java.lang.String kafkaURL, PubSubTopic versionTopic, PubSubTopicPartition pubSubTopicPartition)
long	getOffsetLagBasedOnMetrics(java.lang.String kafkaURL, PubSubTopic versionTopic, PubSubTopicPartition pubSubTopicPartition)
protected static java.lang.Runnable	getStuckConsumerDetectionAndRepairRunnable(java.util.Map<java.lang.String,AbstractKafkaConsumerService> kafkaServerToConsumerServiceMap, java.util.Map<java.lang.String,StoreIngestionTask> versionTopicStoreIngestionTaskMapping, long stuckConsumerRepairThresholdMs, long nonExistingTopicIngestionTaskKillThresholdMs, long nonExistingTopicRetryIntervalMs, StuckConsumerRepairStats stuckConsumerRepairStats, java.util.function.Consumer<java.lang.String> killIngestionTaskRunnable)
boolean	hasConsumerAssignedFor(java.lang.String kafkaURL, PubSubTopic versionTopic, PubSubTopicPartition pubSubTopicPartition)
boolean	startInner()	IMPORTANT: All newly created KafkaConsumerService are already started in createKafkaConsumerService(Properties), if this is no longer the case in future, make sure to update the startInner logic here.
void	stopInner()
ConsumedDataReceiver<java.util.List<PubSubMessage<KafkaKey,KafkaMessageEnvelope,java.lang.Long>>>	subscribeConsumerFor(java.lang.String kafkaURL, StoreIngestionTask storeIngestionTask, PubSubTopicPartition pubSubTopicPartition, long lastOffset)
void	unsubscribeConsumerFor(PubSubTopic versionTopic, PubSubTopicPartition pubSubTopicPartition)

Methods inherited from class com.linkedin.venice.service.AbstractVeniceService

close, getName, isRunning, start, stop

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AggKafkaConsumerService

public AggKafkaConsumerService(PubSubConsumerAdapterFactory consumerFactory,
                               TopicManagerContext.PubSubPropertiesSupplier pubSubPropertiesSupplier,
                               VeniceServerConfig serverConfig,
                               EventThrottler bandwidthThrottler,
                               EventThrottler recordsThrottler,
                               KafkaClusterBasedRecordThrottler kafkaClusterBasedRecordThrottler,
                               io.tehuti.metrics.MetricsRepository metricsRepository,
                               TopicExistenceChecker topicExistenceChecker,
                               PubSubMessageDeserializer pubSubDeserializer,
                               java.util.function.Consumer<java.lang.String> killIngestionTaskRunnable,
                               java.util.function.Function<java.lang.String,java.lang.Boolean> isAAOrWCEnabledFunc,
                               ReadOnlyStoreRepository metadataRepository)

Method Detail

startInner

public boolean startInner()

IMPORTANT: All newly created KafkaConsumerService are already started in createKafkaConsumerService(Properties), if this is no longer the case in future, make sure to update the startInner logic here.

Specified by:

startInner in class AbstractVeniceService

Returns:

true if the service is completely started, false if it is still starting asynchronously (in this case, it is the implementer's responsibility to set AbstractVeniceService.serviceState to AbstractVeniceService.ServiceState.STARTED upon completion of the async work).

stopInner

public void stopInner()
               throws java.lang.Exception

Specified by:

stopInner in class AbstractVeniceService

Throws:

java.lang.Exception

getStuckConsumerDetectionAndRepairRunnable

protected static java.lang.Runnable getStuckConsumerDetectionAndRepairRunnable(java.util.Map<java.lang.String,AbstractKafkaConsumerService> kafkaServerToConsumerServiceMap,
                                                                               java.util.Map<java.lang.String,StoreIngestionTask> versionTopicStoreIngestionTaskMapping,
                                                                               long stuckConsumerRepairThresholdMs,
                                                                               long nonExistingTopicIngestionTaskKillThresholdMs,
                                                                               long nonExistingTopicRetryIntervalMs,
                                                                               StuckConsumerRepairStats stuckConsumerRepairStats,
                                                                               java.util.function.Consumer<java.lang.String> killIngestionTaskRunnable)

createKafkaConsumerService

public AbstractKafkaConsumerService createKafkaConsumerService(java.util.Properties consumerProperties)

Create a new KafkaConsumerService given consumerProperties which must contain a value for "bootstrap.servers". If a KafkaConsumerService for the given "bootstrap.servers" (Kafka URL) has already been created, this method returns the created KafkaConsumerService.

Parameters:

consumerProperties - consumer properties that are used to create KafkaConsumerService

hasConsumerAssignedFor

public boolean hasConsumerAssignedFor(java.lang.String kafkaURL,
                                      PubSubTopic versionTopic,
                                      PubSubTopicPartition pubSubTopicPartition)

unsubscribeConsumerFor

public void unsubscribeConsumerFor(PubSubTopic versionTopic,
                                   PubSubTopicPartition pubSubTopicPartition)

subscribeConsumerFor

public ConsumedDataReceiver<java.util.List<PubSubMessage<KafkaKey,KafkaMessageEnvelope,java.lang.Long>>> subscribeConsumerFor(java.lang.String kafkaURL,
                                                                                                                                          StoreIngestionTask storeIngestionTask,
                                                                                                                                          PubSubTopicPartition pubSubTopicPartition,
                                                                                                                                          long lastOffset)

getOffsetLagBasedOnMetrics

public long getOffsetLagBasedOnMetrics(java.lang.String kafkaURL,
                                       PubSubTopic versionTopic,
                                       PubSubTopicPartition pubSubTopicPartition)

getLatestOffsetBasedOnMetrics

public long getLatestOffsetBasedOnMetrics(java.lang.String kafkaURL,
                                          PubSubTopic versionTopic,
                                          PubSubTopicPartition pubSubTopicPartition)