Packages

  • package root
    Definition Classes
    root
  • package com
    Definition Classes
    root
  • package adform
    Definition Classes
    com
  • package streamloader

    The entry point of the stream loader library is the StreamLoader class, which requires a $KafkaSource and a $Sink.

    The entry point of the stream loader library is the StreamLoader class, which requires a $KafkaSource and a $Sink. Once started it will subscribe to the provided topics and will start polling and sinking records. The sink has to be able to persist records and to look up committed offsets (technically this is optional, but without it there would be no way to provide any delivery guarantees). A large class of sinks are batch based, implemented as $RecordBatchingSink. This sink accumulate batches of records using some $RecordBatcher and once ready, stores them to some underlying $RecordBatchStorage. A common type of batch is file based, i.e. a batcher might write records to a temporary file and once the file is full the sink commits the file to some underlying storage, such as a database or a distributed file system like HDFS.

    A sketch of the class hierarchy illustrating the main classes and interfaces can be seen below.



    For concrete storage implementations see the clickhouse, hadoop, s3 and vertica packages. They also contain more file builder implementations than just the $CsvFileBuilder included in the core library.

    Definition Classes
    adform
  • package sink
    Definition Classes
    streamloader
  • package batch
    Definition Classes
    sink
  • package storage
    Definition Classes
    batch
  • InDataOffsetBatchStorage
  • RecordBatchStorage
  • StagedOffsetCommit
  • TwoPhaseCommitBatchStorage
  • TwoPhaseCommitMetadata

case class TwoPhaseCommitMetadata[S](watermark: Timestamp, stagedOffsetCommit: Option[StagedOffsetCommit[S]])(implicit evidence$2: JsonSerializer[S]) extends Product with Serializable

Kafka commit metadata used in the two-phase commit implementation, stored for each topic partition separately. Consists of the currently stored watermark and an optional staging part, if a commit is in progress.

Linear Supertypes
Serializable, Product, Equals, AnyRef, Any
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Inherited
  1. TwoPhaseCommitMetadata
  2. Serializable
  3. Product
  4. Equals
  5. AnyRef
  6. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new TwoPhaseCommitMetadata(watermark: Timestamp, stagedOffsetCommit: Option[StagedOffsetCommit[S]])(implicit arg0: JsonSerializer[S])

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  8. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  9. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  10. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  11. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  12. def productElementNames: Iterator[String]
    Definition Classes
    Product
  13. def serialize: String

    Serializes the metadata by converting it to JSON, compressing and base64 encoding.

  14. val stagedOffsetCommit: Option[StagedOffsetCommit[S]]
  15. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  16. def toJson: String
  17. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  18. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  19. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  20. val watermark: Timestamp

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

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