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 vertica
    Definition Classes
    streamloader
  • package file
    Definition Classes
    vertica
  • package native
    Definition Classes
    file
  • NativeVerticaFileBuilder
  • NativeVerticaPrimitiveTypeWriter
  • NativeVerticaRecordEncoder
  • NativeVerticaRecordStreamWriter
  • NativeVerticaTypeEncoder

package native

Ordering
  1. Alphabetic
Visibility
  1. Public
  2. Protected

Type Members

  1. class NativeVerticaFileBuilder[-R] extends StreamFileBuilder[R] with VerticaFileBuilder[R]

    File builder for the native Vertica file format, requires an implicit NativeVerticaRecordEncoder in scope.

    File builder for the native Vertica file format, requires an implicit NativeVerticaRecordEncoder in scope.

    R

    type of the records written to files being built.

  2. trait NativeVerticaPrimitiveTypeWriter extends LittleEndianByteWriter

    Implementations for writing primitive data types in the Vertica native file encoding.

  3. trait NativeVerticaRecordEncoder[R] extends AnyRef

    An encoder for encoding records to rows in the native Vertica file format.

    An encoder for encoding records to rows in the native Vertica file format. Implementations need to define the encoding by composing calls to a provided primitive type writer, static column sizes and nullability of each field have to be defined separately.

    R

    Type of records being encoded.

  4. class NativeVerticaRecordStreamWriter[R] extends RecordStreamWriter[R]

    Stream writer implementation that encodes records using an implicit NativeVerticaRecordEncoder and writes them to the provided output stream.

    Stream writer implementation that encodes records using an implicit NativeVerticaRecordEncoder and writes them to the provided output stream. See the native format specification for more details: https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/AdministratorsGuide/BinaryFilesAppendix/CreatingNativeBinaryFormatFiles.htm

  5. trait NativeVerticaTypeEncoder[-T] extends AnyRef

    Encoder of arbitrary data types to the native Vertica file format.

    Encoder of arbitrary data types to the native Vertica file format. The macro derived case class NativeVerticaRecordEncoder looks up type encoders implicitly for unknown types, this way arbitrary data types can be encoded.

    T

    Type being encoded.

Value Members

  1. object NativeVerticaRecordEncoder

Ungrouped