org.wso2.siddhi.core.util.transport

Class MultiClientDistributedSink

java.lang.Object

org.wso2.siddhi.core.stream.output.sink.Sink

org.wso2.siddhi.core.stream.output.sink.distributed.DistributedTransport

org.wso2.siddhi.core.util.transport.MultiClientDistributedSink

All Implemented Interfaces:

SinkListener, Snapshotable

public class MultiClientDistributedSink
extends DistributedTransport

This is the distributed transport to publish to multiple endpoints using client/publisher for each endpoint. There will be a separate independent Sink instance connecting to each destination. This class interacts with Sink interface and it does not make any assumptions on the underlying transport implementation.

Field Summary

Fields inherited from class org.wso2.siddhi.core.stream.output.sink.distributed.DistributedTransport

siddhiAppContext, strategy, streamDefinition

Constructor Summary

Constructors

Constructor and Description
MultiClientDistributedSink()

Method Summary

Modifier and Type	Method and Description
void	connect() Will be called to connect to the backend before events are published
Map<String,Object>	currentState() Used to collect the serializable state of the processing element, that need to be persisted for the reconstructing the element to the same state on a different point of time
void	destroy() Will be called at the end to clean all the resources consumed
void	disconnect() Will be called after all publishing is done, or when ConnectionUnavailableException is thrown
Class[]	getSupportedInputEventClasses()
void	initTransport(OptionHolder sinkOptionHolder, List<OptionHolder> destinationOptionHolders, org.wso2.siddhi.query.api.annotation.Annotation sinkAnnotation, ConfigReader sinkConfigReader, SiddhiAppContext siddhiAppContext)
void	publish(Object payload, DynamicOptions transportOptions, int destinationId)
void	restoreState(Map<String,Object> state) Used to restore serialized state of the processing element, for reconstructing the element to the same state as if was on a previous point of time.

Methods inherited from class org.wso2.siddhi.core.stream.output.sink.distributed.DistributedTransport

getSupportedDynamicOptions, init, init, publish

Methods inherited from class org.wso2.siddhi.core.stream.output.sink.Sink

connectWithRetry, getElementId, getMapper, getStreamDefinition, getType, init, initOnlyTransport, isConnected, publish, shutdown

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiClientDistributedSink

public MultiClientDistributedSink()

Method Detail

publish

public void publish(Object payload,
                    DynamicOptions transportOptions,
                    int destinationId)
             throws ConnectionUnavailableException

Specified by:

publish in class DistributedTransport

Throws:

ConnectionUnavailableException

initTransport

public void initTransport(OptionHolder sinkOptionHolder,
                          List<OptionHolder> destinationOptionHolders,
                          org.wso2.siddhi.query.api.annotation.Annotation sinkAnnotation,
                          ConfigReader sinkConfigReader,
                          SiddhiAppContext siddhiAppContext)

Specified by:

initTransport in class DistributedTransport

getSupportedInputEventClasses

public Class[] getSupportedInputEventClasses()

Specified by:

getSupportedInputEventClasses in class Sink

connect

public void connect()
             throws ConnectionUnavailableException

Will be called to connect to the backend before events are published

Specified by:

connect in class Sink

Throws:

ConnectionUnavailableException - if it cannot connect to the backend

disconnect

public void disconnect()

Will be called after all publishing is done, or when ConnectionUnavailableException is thrown

Specified by:

disconnect in class Sink

destroy

public void destroy()

Will be called at the end to clean all the resources consumed

Specified by:

destroy in class Sink

currentState

public Map<String,Object> currentState()

Used to collect the serializable state of the processing element, that need to be persisted for the reconstructing the element to the same state on a different point of time

Returns:

stateful objects of the processing element as an array

restoreState

public void restoreState(Map<String,Object> state)

Used to restore serialized state of the processing element, for reconstructing the element to the same state as if was on a previous point of time.

Parameters:

state - the stateful objects of the element as an array on the same order provided by currentState().