io.siddhi.core.stream.output.sink

Class InMemorySink

java.lang.Object

io.siddhi.core.stream.output.sink.Sink<State>

io.siddhi.core.stream.output.sink.InMemorySink

All Implemented Interfaces:

SinkListener

public class InMemorySink
extends Sink<State>

Implementation of Sink which represents in-memory transport. This implementation can send incoming objects to in-memory transport within JVM.

Nested Class Summary

Nested classes/interfaces inherited from class io.siddhi.core.stream.output.sink.Sink

Sink.OnErrorAction

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	TOPIC_KEY
protected Option	topicOption

Fields inherited from class io.siddhi.core.stream.output.sink.Sink

isTryingToConnect

Constructor Summary

Constructors

Constructor and Description
InMemorySink()

Method Summary

Modifier and Type	Method and Description
void	connect() Called to connect to the backend before events are published
void	destroy() Called at the end to clean all the resources consumed
void	disconnect() Called after all publishing is done, or when ConnectionUnavailableException is thrown
protected ServiceDeploymentInfo	exposeServiceDeploymentInfo() Give information to the deployment about the service exposed by the sink.
String[]	getSupportedDynamicOptions() Supported dynamic options by the transport
Class[]	getSupportedInputEventClasses()
protected StateFactory<State>	init(io.siddhi.query.api.definition.StreamDefinition outputStreamDefinition, OptionHolder optionHolder, ConfigReader sinkConfigReader, SiddhiAppContext siddhiAppContext) Will be called for initialing the Sink
void	publish(Object payload, DynamicOptions dynamicOptions, State s) Sending events via output transport

Methods inherited from class io.siddhi.core.stream.output.sink.Sink

connectWithRetry, getHandler, getMapper, getServiceDeploymentInfoList, getStreamDefinition, getType, init, initOnlyTransport, isConnected, isStateful, onError, publish, retryPublish, setConnected, shutdown

Methods inherited from class java.lang.Object

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

Field Detail

TOPIC_KEY

protected static final String TOPIC_KEY

See Also:

Constant Field Values

topicOption

protected Option topicOption

Constructor Detail

InMemorySink

public InMemorySink()

Method Detail

getSupportedInputEventClasses

public Class[] getSupportedInputEventClasses()

Specified by:

getSupportedInputEventClasses in class Sink<State>

exposeServiceDeploymentInfo

protected ServiceDeploymentInfo exposeServiceDeploymentInfo()

Description copied from class: Sink

Give information to the deployment about the service exposed by the sink.

Specified by:

exposeServiceDeploymentInfo in class Sink<State>

Returns:

ServiceDeploymentInfo Service related information to the deployment

getSupportedDynamicOptions

public String[] getSupportedDynamicOptions()

Description copied from class: Sink

Supported dynamic options by the transport

Specified by:

getSupportedDynamicOptions in class Sink<State>

Returns:

the list of supported dynamic option keys

init

protected StateFactory<State> init(io.siddhi.query.api.definition.StreamDefinition outputStreamDefinition,
                                   OptionHolder optionHolder,
                                   ConfigReader sinkConfigReader,
                                   SiddhiAppContext siddhiAppContext)

Description copied from class: Sink

Will be called for initialing the Sink

Specified by:

init in class Sink<State>

Parameters:

outputStreamDefinition - containing stream definition bind to the Sink

optionHolder - Option holder containing static and dynamic options related to the Sink

sinkConfigReader - this hold the Sink extensions configuration reader.

siddhiAppContext - SiddhiAppContext of the parent siddhi app.

connect

public void connect()
             throws ConnectionUnavailableException

Description copied from class: Sink

Called to connect to the backend before events are published

Specified by:

connect in class Sink<State>

Throws:

ConnectionUnavailableException - if it cannot connect to the backend

disconnect

public void disconnect()

Description copied from class: Sink

Called after all publishing is done, or when ConnectionUnavailableException is thrown

Specified by:

disconnect in class Sink<State>

destroy

public void destroy()

Description copied from class: Sink

Called at the end to clean all the resources consumed

Specified by:

destroy in class Sink<State>

publish

public void publish(Object payload,
                    DynamicOptions dynamicOptions,
                    State s)
             throws ConnectionUnavailableException

Description copied from class: Sink

Sending events via output transport

Specified by:

publish in class Sink<State>

Parameters:

payload - payload of the event

dynamicOptions - of the event constructing the payload

s - current state of the sink

Throws:

ConnectionUnavailableException - throw when connections are unavailable.