Class/Object

org.apache.gearpump.streaming.kafka.lib.source

AbstractKafkaSource

Related Docs: object AbstractKafkaSource | package source

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abstract class AbstractKafkaSource extends TimeReplayableSource

Contains implementation for Kafka source connectors, users should use org.apache.gearpump.streaming.kafka.KafkaSource.

This is a TimeReplayableSource which is able to replay messages given a start time. Each kafka message is tagged with a timestamp by org.apache.gearpump.streaming.transaction.api.MessageDecoder and the (timestamp, offset) mapping is stored to a org.apache.gearpump.streaming.transaction.api.CheckpointStore. On recovery, we could retrieve the previously stored offset from the org.apache.gearpump.streaming.transaction.api.CheckpointStore by timestamp and start to read from there.

kafka message is wrapped into gearpump org.apache.gearpump.Message and further filtered by a org.apache.gearpump.streaming.transaction.api.TimeStampFilter such that obsolete messages are dropped.

Linear Supertypes
TimeReplayableSource, DataSource, Serializable, AnyRef, Any
Known Subclasses
KafkaSource
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Inherited
  1. AbstractKafkaSource
  2. TimeReplayableSource
  3. DataSource
  4. Serializable
  5. AnyRef
  6. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new AbstractKafkaSource(topic: String, properties: Properties)

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  2. new AbstractKafkaSource(topic: String, props: Properties, kafkaConfigFactory: KafkaConfigFactory, kafkaClientFactory: KafkaClientFactory, fetchThreadFactory: FetchThreadFactory)

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Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any

  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  4. def addCheckpointStore(tp: TopicAndPartition, store: CheckpointStore): Unit

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    Attributes
    protected

  5. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  6. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  7. def close(): Unit

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    Definition Classes
    AbstractKafkaSource → DataSource

  8. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef

  9. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  10. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  11. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any

  12. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  13. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  14. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef

  15. final def notify(): Unit

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    Definition Classes
    AnyRef

  16. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  17. def open(context: TaskContext, startTime: TimeStamp): Unit

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    Definition Classes
    AbstractKafkaSource → DataSource

  18. def read(): Message

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    Reads a record from incoming queue, decodes, filters and checkpoints offsets before returns a Message.

    Reads a record from incoming queue, decodes, filters and checkpoints offsets before returns a Message. Message can be null if the incoming queue is empty.

    returns

    a org.apache.gearpump.Message or null

    Definition Classes
    AbstractKafkaSource → DataSource

  19. def setCheckpointStore(checkpointStoreFactory: CheckpointStoreFactory): Unit

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    Definition Classes
    AbstractKafkaSource → TimeReplayableSource

  20. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef

  21. def toString(): String

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    Definition Classes
    AnyRef → Any

  22. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  23. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  24. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from TimeReplayableSource

Inherited from DataSource

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped