io.continual.services.processor.engine.model

Interface Source

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

BasicSource, CsvSource, InputStreamSource, JsonObjectFileSource, JsonObjectStreamSource, MessageGenerator, NullSource, QueuingSource, StdInSource

public interface Source
extends Closeable

Method Summary

Modifier and Type	Method and Description
MessageAndRouting	getNextMessage(StreamProcessingContext spc, long waitAtMost, TimeUnit waitAtMostTimeUnits) Get the next message from this source.
boolean	isEof() Is the source at EOF? Not all sources are bounded, so they may always return false.
void	markComplete(StreamProcessingContext spc, MessageAndRouting mr) Called by the processing engine when processing for a given message is complete.
default void	open() Called when source reader begins.
void	requeue(MessageAndRouting msgAndRoute) Requeue a message for delivery into the given pipeline

Methods inherited from interface java.io.Closeable

close

Method Detail

open

default void open()
           throws IOException

Called when source reader begins.

Throws:

IOException

isEof

boolean isEof()
       throws IOException

Is the source at EOF? Not all sources are bounded, so they may always return false.

Returns:

true if the source is at EOF

Throws:

IOException

getNextMessage

MessageAndRouting getNextMessage(StreamProcessingContext spc,
                                 long waitAtMost,
                                 TimeUnit waitAtMostTimeUnits)
                          throws IOException,
                                 InterruptedException

Get the next message from this source.

Returns:

the next message with routing, or null if none are available

Throws:

IOException

InterruptedException

requeue

void requeue(MessageAndRouting msgAndRoute)

Requeue a message for delivery into the given pipeline

Parameters:

msgAndRoute -

markComplete

void markComplete(StreamProcessingContext spc,
                  MessageAndRouting mr)

Called by the processing engine when processing for a given message is complete.

Parameters:

spc -

mr -