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 encoding
    Definition Classes
    sink
  • package binary
    Definition Classes
    encoding
  • package csv
    Definition Classes
    encoding
  • CsvFileBuilder
  • CsvFormat
  • CsvRecordEncoder
  • CsvRecordStreamWriter
  • CsvTypeEncoder
  • package macros
    Definition Classes
    encoding

package csv

Ordering
  1. Alphabetic
Visibility
  1. Public
  2. Protected

Type Members

  1. class CsvFileBuilder[-R] extends StreamFileBuilder[R]

    A CSV file builder.

    A CSV file builder.

    R

    Type of the records written to files being built. An implicit CsvRecordEncoder for the type must be available.

  2. case class CsvFormat(columnSeparator: String, rowSeparator: String, includeHeader: Boolean, nullValue: String) extends Product with Serializable
  3. trait CsvRecordEncoder[R] extends AnyRef

    An encoder of some type R to lines in a CSV file.

    An encoder of some type R to lines in a CSV file.

    R

    Type of records to encode.

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

    A stream writer that encodes values of type R using an implicit CsvRecordEncoder and outputs CSV content to the given output stream.

    A stream writer that encodes values of type R using an implicit CsvRecordEncoder and outputs CSV content to the given output stream.

    R

    Type of the records being written.

  5. trait CsvTypeEncoder[-T] extends AnyRef

    An encoder from some data type T to string.

    An encoder from some data type T to string. Used to customize data type encodings in macro derived CsvRecordEncoder instances.

Value Members

  1. object CsvFormat extends Serializable
  2. object CsvRecordEncoder
  3. object CsvTypeEncoder

Ungrouped