co.cask.hydrator.plugin.realtime

Class HTTPPollerRealtimeSource

java.lang.Object

co.cask.cdap.etl.api.realtime.RealtimeSource<T>

co.cask.hydrator.common.ReferenceRealtimeSource<co.cask.cdap.api.data.format.StructuredRecord>

co.cask.hydrator.plugin.realtime.HTTPPollerRealtimeSource

All Implemented Interfaces:

Destroyable, PipelineConfigurable, StageLifecycle<RealtimeContext>

public class HTTPPollerRealtimeSource
extends ReferenceRealtimeSource<co.cask.cdap.api.data.format.StructuredRecord>

Real Time Source to poll and fetch data from a url.

Field Summary

Fields inherited from class co.cask.cdap.etl.api.realtime.RealtimeSource

PLUGIN_TYPE

Constructor Summary

Constructors

Constructor and Description
HTTPPollerRealtimeSource(HTTPPollConfig config)

Method Summary

Methods

Modifier and Type	Method and Description
void	configurePipeline(PipelineConfigurer pipelineConfigurer)
void	initialize(RealtimeContext context)
SourceState	poll(Emitter<co.cask.cdap.api.data.format.StructuredRecord> writer, SourceState currentState)

Methods inherited from class co.cask.cdap.etl.api.realtime.RealtimeSource

destroy

Methods inherited from class java.lang.Object

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

Constructor Detail

HTTPPollerRealtimeSource

public HTTPPollerRealtimeSource(HTTPPollConfig config)

Method Detail

configurePipeline

public void configurePipeline(PipelineConfigurer pipelineConfigurer)

Specified by:

configurePipeline in interface PipelineConfigurable

Overrides:

configurePipeline in class ReferenceRealtimeSource<co.cask.cdap.api.data.format.StructuredRecord>

initialize

public void initialize(RealtimeContext context)
                throws Exception

Specified by:

initialize in interface StageLifecycle<RealtimeContext>

Overrides:

initialize in class ReferenceRealtimeSource<co.cask.cdap.api.data.format.StructuredRecord>

Throws:

Exception

poll

@Nullable
public SourceState poll(Emitter<co.cask.cdap.api.data.format.StructuredRecord> writer,
                        SourceState currentState)
                 throws Exception

Specified by:

poll in class RealtimeSource<co.cask.cdap.api.data.format.StructuredRecord>

Throws:

Exception