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

Class BroadcastDistributionStrategy

java.lang.Object

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

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

public class BroadcastDistributionStrategy
extends DistributionStrategy

Publishing strategy to broad cast message to all destinations

Constructor Summary

Constructors

Constructor and Description
BroadcastDistributionStrategy()

Method Summary

Modifier and Type	Method and Description
List<Integer>	getDestinationsToPublish(Object payload, DynamicOptions transportOptions) This method tells the ID(s) of the destination(s) to which a given messages should be sent.
void	init(org.wso2.siddhi.query.api.definition.StreamDefinition streamDefinition, OptionHolder transportOptionHolder, OptionHolder distributionOptionHolder, List<OptionHolder> destinationOptionHolders, ConfigReader configReader) Initialize the Distribution strategy with the information it will require to make decisions.

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

destinationAvailable, destinationFailed, getActiveDestinationCount

Methods inherited from class java.lang.Object

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

Constructor Detail

BroadcastDistributionStrategy

public BroadcastDistributionStrategy()

Method Detail

init

public void init(org.wso2.siddhi.query.api.definition.StreamDefinition streamDefinition,
                 OptionHolder transportOptionHolder,
                 OptionHolder distributionOptionHolder,
                 List<OptionHolder> destinationOptionHolders,
                 ConfigReader configReader)

Initialize the Distribution strategy with the information it will require to make decisions.

Specified by:

init in class DistributionStrategy

Parameters:

streamDefinition - The stream attached to the sink this DistributionStrategy is used in

transportOptionHolder - Sink options of the sink which uses this DistributionStrategy

distributionOptionHolder - Option holder containing static and dynamic options related to the distribution strategy.

destinationOptionHolders - The list of options under @destination of the relevant sink.

configReader - This hold the BroadcastDistributionStrategy extensions configuration reader.

getDestinationsToPublish

public List<Integer> getDestinationsToPublish(Object payload,
                                              DynamicOptions transportOptions)

This method tells the ID(s) of the destination(s) to which a given messages should be sent. There can be cases where a given message is only sent to a specific destination(e.g., partition based) and message is sent to multiple endpoints(e.g., broadcast)

Specified by:

getDestinationsToPublish in class DistributionStrategy

Parameters:

payload - payload of the message

transportOptions - Dynamic transport options of the sink

Returns:

Set of IDs of the destination to which the event should be sent