Class

com.lightbend.kafka.scala.iq.http

KeyValueFetcher

Related Doc: package http

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class KeyValueFetcher[K, V] extends LazyLogging with FailFastCirceSupport with Serializers

Abstraction for fetching information from a key/value state store based on the key and the store name passed in the API.

Supports basic fetch as well as fetch over a time window.

The fetch APIs support retry semantics in case the key is not available in the local state store. It then fetches the store information from the MetadataService and then requeries that store to get the information.

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Serializers, FailFastCirceSupport, FailFastUnmarshaller, BaseCirceSupport, LazyLogging, AnyRef, Any
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Inherited
  1. KeyValueFetcher
  2. Serializers
  3. FailFastCirceSupport
  4. FailFastUnmarshaller
  5. BaseCirceSupport
  6. LazyLogging
  7. AnyRef
  8. Any
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Visibility
  1. Public
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Instance Constructors

  1. new KeyValueFetcher(metadataService: MetadataService, localStateStoreQuery: LocalStateStoreQuery[K, V], httpRequester: HttpRequester, streams: KafkaStreams, executionContext: ExecutionContext, hostInfo: HostInfo)(implicit arg0: Decoder[K], arg1: Decoder[V], actorSystem: ActorSystem, keySerializer: Serializer[K], u: Unmarshaller[ResponseEntity, V])

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Value Members

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

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    AnyRef → Any

  2. final def ##(): Int

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    AnyRef → Any

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

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    AnyRef → Any

  4. final def asInstanceOf[T0]: T0

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    Any

  5. final val byteArrayDeserializer: ByteArrayDeserializer

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    Serializers

  6. final val byteArraySerde: Serde[Array[Byte]]

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    Serializers

  7. final val byteArraySerializer: ByteArraySerializer

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    Serializers

  8. def clone(): AnyRef

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

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

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    Definition Classes
    AnyRef

  10. def equals(arg0: Any): Boolean

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    AnyRef → Any

  11. def fetch(key: K, store: String, path: String): Future[V]

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    Query for a key

  12. def fetchAll(store: String, path: String): Future[List[(K, V)]]

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    Query all: Warning - this may be large depending on the data set

  13. def fetchApproxNumEntries(store: String, path: String): Future[Long]

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    Query all hosts to find the sum of approximate number of entries

  14. def fetchRange(fromKey: K, toKey: K, store: String, path: String): Future[List[(K, V)]]

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    Query for a range of keys

  15. def fetchWindowed(key: K, store: String, path: String, fromTime: Long, toTime: Long): Future[List[(Long, V)]]

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    Query for a window

  16. def finalize(): Unit

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

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

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    AnyRef → Any

  18. def hashCode(): Int

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    AnyRef → Any

  19. final def isInstanceOf[T0]: Boolean

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    Any

  20. implicit final def jsonMarshaller(implicit printer: Printer): ToEntityMarshaller[Json]

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    Definition Classes
    BaseCirceSupport

  21. implicit final val jsonUnmarshaller: FromEntityUnmarshaller[Json]

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    Definition Classes
    BaseCirceSupport

  22. lazy val logger: Logger

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    Attributes
    protected
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    LazyLogging

  23. final val longSerde: Serde[Long]

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    Serializers

  24. implicit final def marshaller[A](implicit arg0: Encoder[A], printer: Printer): ToEntityMarshaller[A]

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    Definition Classes
    BaseCirceSupport

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

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    AnyRef

  26. final def notify(): Unit

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    AnyRef

  27. final def notifyAll(): Unit

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    AnyRef

  28. final val stringDeserializer: StringDeserializer

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    Serializers

  29. final val stringSerde: Serde[String]

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    Serializers

  30. final val stringSerializer: StringSerializer

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    Serializers

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

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    AnyRef

  32. def toString(): String

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    AnyRef → Any

  33. implicit final def unmarshaller[A](implicit arg0: Decoder[A]): FromEntityUnmarshaller[A]

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    Definition Classes
    FailFastUnmarshaller

  34. def unmarshallerContentTypes: Seq[ContentTypeRange]

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    Definition Classes
    BaseCirceSupport

  35. final def wait(): Unit

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    AnyRef
    Annotations
    @throws( ... )

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

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    Annotations
    @throws( ... )

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

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    Annotations
    @throws( ... )

  38. final val windowedByteArrayDeserializer: WindowedDeserializer[Array[Byte]]

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    Definition Classes
    Serializers

  39. final val windowedByteArraySerde: Serde[Windowed[Array[Byte]]]

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    Serializers

  40. final val windowedByteArraySerializer: WindowedSerializer[Array[Byte]]

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    Serializers

  41. final val windowedStringDeserializer: WindowedDeserializer[String]

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    Serializers

  42. final val windowedStringSerde: Serde[Windowed[String]]

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    Serializers

  43. final val windowedStringSerializer: WindowedSerializer[String]

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    Definition Classes
    Serializers

Inherited from Serializers

Inherited from FailFastCirceSupport

Inherited from FailFastUnmarshaller

Inherited from BaseCirceSupport

Inherited from LazyLogging

Inherited from AnyRef

Inherited from Any

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