org.apache.beam.fn.harness

Class BoundedSourceRunner<InputT extends org.apache.beam.sdk.io.BoundedSource<OutputT>,OutputT>

java.lang.Object

org.apache.beam.fn.harness.BoundedSourceRunner<InputT,OutputT>

public class BoundedSourceRunner<InputT extends org.apache.beam.sdk.io.BoundedSource<OutputT>,OutputT>
extends java.lang.Object

A runner which creates Source.Readers for each BoundedSource sent as an input and executes the Source.Readers read loop.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BoundedSourceRunner.Registrar A registrar which provides a factory to handle Java BoundedSources.

Method Summary

Modifier and Type	Method and Description
void	runReadLoop(org.apache.beam.sdk.util.WindowedValue<InputT> value) Creates a Source.Reader for each BoundedSource and executes the Source.Readers read loop.
void	start() Deprecated. The runner harness is meant to send the source over the Beam Fn Data API which would be consumed by the runReadLoop(org.apache.beam.sdk.util.WindowedValue<InputT>). Drop this method once the runner harness sends the source instead of unpacking it from the data block of the function specification.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

start

@Deprecated
public void start()
                       throws java.lang.Exception

Deprecated. The runner harness is meant to send the source over the Beam Fn Data API which would be consumed by the runReadLoop(org.apache.beam.sdk.util.WindowedValue<InputT>). Drop this method once the runner harness sends the source instead of unpacking it from the data block of the function specification.

Throws:

java.lang.Exception

runReadLoop

public void runReadLoop(org.apache.beam.sdk.util.WindowedValue<InputT> value)
                 throws java.lang.Exception

Creates a Source.Reader for each BoundedSource and executes the Source.Readers read loop. See Source.Reader for further details of the read loop.

Propagates any exceptions caused during reading or processing via a consumer to the caller.

Throws:

java.lang.Exception

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object