io.gearpump.streaming.task

TaskContext

Related Doc: package task

trait TaskContext extends AnyRef

This provides context information for a task.

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TaskWrapper
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Abstract Value Members

  1. abstract def actorOf(props: Props, name: String): ActorRef

    See also

    ActorRefProvider.actorOf

  2. abstract def actorOf(props: Props): ActorRef

    See also

    ActorRefProvider.actorOf

  3. abstract def appId: Int

  4. abstract def appMaster: ActorRef

    The actorRef of AppMaster

    The actorRef of AppMaster

    returns

  5. abstract def appName: String

  6. abstract def executorId: Int

  7. abstract def output(msg: Message): Unit

    This can be used to output messages to downstream tasks.

    This can be used to output messages to downstream tasks.

    The data shuffling rule can be decided by Partitioner.

    msg

  8. abstract def parallelism: Int

    The task parallelism

    The task parallelism

    For example, we can create 3 source tasks, and 3 sink tasks, the task parallelism is 3 for each.

    This can be useful when reading from partitioned data source. For example, for kafka, there may be 10 partitions, if we have parallelism of 2 for this task, then each task will be responsible to read data from 5 partitions.

    returns

  9. abstract def schedule(initialDelay: FiniteDuration, interval: FiniteDuration)(f: ⇒ Unit): Cancellable

    See also

    ActorRefProducer.schedule

  10. abstract def scheduleOnce(initialDelay: FiniteDuration)(f: ⇒ Unit): Cancellable

    ActorRefProvider.scheduleOnce

    ActorRefProvider.scheduleOnce

    initialDelay
    f
    returns

  11. abstract def self: ActorRef

    Please don't use this if possible.

    Please don't use this if possible.

    returns

  12. abstract def sender: ActorRef

    For managed message(type of Message), the sender only serve as a unique Id, It's address is not something meaningful, you should not use this directly

    For managed message(type of Message), the sender only serve as a unique Id, It's address is not something meaningful, you should not use this directly

    For unmanaged message, the sender represent the sender ActorRef

    returns

  13. abstract def system: ActorSystem

    Please don't use this if possible

    Please don't use this if possible

    returns

  14. abstract def taskId: TaskId

  15. abstract def upstreamMinClock: TimeStamp

    retrieve upstream min clock from TaskActor

    retrieve upstream min clock from TaskActor

    returns

Concrete Value Members

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

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  2. final def ##(): Int

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

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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

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  8. def finalize(): Unit

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

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  11. final def isInstanceOf[T0]: Boolean

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

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  13. final def notify(): Unit

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  14. final def notifyAll(): Unit

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

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  16. def toString(): String

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  17. final def wait(): Unit

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

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

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