Class

org.locationtech.geomesa.lambda.stream.kafka

KafkaCacheLoader

Related Doc: package kafka

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class KafkaCacheLoader extends ThreadedConsumer

Consumes from kakfa and populates the local cache

  1. reads offsets stored in zk on startup 2. scheduled repeating - reads features from kafka, adds to in-memory cache 3. listens for offsets change in zk, removes expired features from in-memory cache
Linear Supertypes
ThreadedConsumer, LazyLogging, Closeable, AutoCloseable, AnyRef, Any
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Inherited
  1. KafkaCacheLoader
  2. ThreadedConsumer
  3. LazyLogging
  4. Closeable
  5. AutoCloseable
  6. AnyRef
  7. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new KafkaCacheLoader(consumers: Seq[Consumer[Array[Byte], Array[Byte]]], topic: String, frequency: Long, serializer: KryoFeatureSerializer, cache: WritableFeatureCache)

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    consumers

    consumers

    topic

    kafka topic

    frequency

    kafka poll delay, in milliseconds

    serializer

    feature serializer

    cache

    shared state

Type Members

  1. class ConsumerRunnable extends Runnable

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    Definition Classes
    ThreadedConsumer

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. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  5. def clone(): AnyRef

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

  6. def close(): Unit

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    Definition Classes
    ThreadedConsumer → Closeable → AutoCloseable

  7. def closeConsumers: Boolean

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    Attributes
    protected
    Definition Classes
    ThreadedConsumer

  8. def consume(record: ConsumerRecord[Array[Byte], Array[Byte]]): Unit

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    Attributes
    protected
    Definition Classes
    KafkaCacheLoader → ThreadedConsumer

  9. val consumers: Seq[Consumer[Array[Byte], Array[Byte]]]

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    consumers

    consumers

    Attributes
    protected
    Definition Classes
    KafkaCacheLoader → ThreadedConsumer

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

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    Definition Classes
    AnyRef

  11. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  12. def finalize(): Unit

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

  13. val frequency: Long

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    kafka poll delay, in milliseconds

    kafka poll delay, in milliseconds

    Attributes
    protected
    Definition Classes
    KafkaCacheLoader → ThreadedConsumer

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

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    Definition Classes
    AnyRef → Any

  15. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  16. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  17. lazy val logger: Logger

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    Attributes
    protected
    Definition Classes
    LazyLogging

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

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    Definition Classes
    AnyRef

  19. final def notify(): Unit

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    Definition Classes
    AnyRef

  20. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  21. def startConsumers(): Unit

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    Definition Classes
    ThreadedConsumer

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

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    Definition Classes
    AnyRef

  23. def toString(): String

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    Definition Classes
    AnyRef → Any

  24. val topic: String

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    kafka topic

    kafka topic

    Attributes
    protected
    Definition Classes
    KafkaCacheLoader → ThreadedConsumer

  25. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from ThreadedConsumer

Inherited from LazyLogging

Inherited from Closeable

Inherited from AutoCloseable

Inherited from AnyRef

Inherited from Any

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