Package io.siddhi.core.stream.input.source

Class InMemorySource

java.lang.Object

io.siddhi.core.stream.input.source.Source

io.siddhi.core.stream.input.source.InMemorySource

public class InMemorySource
extends Source

Implementation of Source to receive events through in-memory transport.

Nested Class Summary

Nested classes/interfaces inherited from class io.siddhi.core.stream.input.source.Source

Source.ConnectionCallback

Constructor Summary

Constructors

Constructor	Description
InMemorySource()

Method Summary

Modifier and Type	Method	Description
void	connect(Source.ConnectionCallback connectionCallback, State state)	Called to connect to the source backend for receiving events
void	destroy()	Called at the end to clean all the resources consumed
void	disconnect()	Called to disconnect from the source backend, or when ConnectionUnavailableException is thrown
protected ServiceDeploymentInfo	exposeServiceDeploymentInfo()	Give information to the deployment about the service exposed by the sink.
Class[]	getOutputEventClasses()	Get produced event class types
StateFactory<State>	init(SourceEventListener sourceEventListener, OptionHolder optionHolder, String[] requestedTransportPropertyNames, ConfigReader configReader, SiddhiAppContext siddhiAppContext)	To initialize the source.
void	pause()	Called to pause event consumption
void	resume()	Called to resume event consumption

Methods inherited from class io.siddhi.core.stream.input.source.Source

connectWithRetry, getMapper, getServiceDeploymentInfo, getStreamDefinition, getType, init, isStateful, shutdown

Methods inherited from class java.lang.Object

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

Constructor Detail

InMemorySource

public InMemorySource()

Method Detail

exposeServiceDeploymentInfo

protected ServiceDeploymentInfo exposeServiceDeploymentInfo()

Description copied from class: Source

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

Specified by:

exposeServiceDeploymentInfo in class Source

Returns:

ServiceDeploymentInfo Service related information to the deployment

init

public StateFactory<State> init(SourceEventListener sourceEventListener,
                                OptionHolder optionHolder,
                                String[] requestedTransportPropertyNames,
                                ConfigReader configReader,
                                SiddhiAppContext siddhiAppContext)

Description copied from class: Source

To initialize the source. (This will be called only once, no connection to external systems should be made at this point).

Specified by:

init in class Source

Parameters:

sourceEventListener - The listener to pass the events for processing which are consumed by the source

optionHolder - Contains static options of the source

requestedTransportPropertyNames - Requested transport properties that should be passed to SourceEventListener

configReader - System configuration reader for source

siddhiAppContext - Siddhi application context

getOutputEventClasses

public Class[] getOutputEventClasses()

Description copied from class: Source

Get produced event class types

Specified by:

getOutputEventClasses in class Source

Returns:

Array of classes that will be produced by the source, null or empty array if it can produce any type of class.

connect

public void connect(Source.ConnectionCallback connectionCallback,
                    State state)
             throws ConnectionUnavailableException

Description copied from class: Source

Called to connect to the source backend for receiving events

Specified by:

connect in class Source

Parameters:

connectionCallback - Callback to pass the ConnectionUnavailableException for connection failure after initial successful connection

state - current state of the source

Throws:

ConnectionUnavailableException - if it cannot connect to the source backend

disconnect

public void disconnect()

Description copied from class: Source

Called to disconnect from the source backend, or when ConnectionUnavailableException is thrown

Specified by:

disconnect in class Source

destroy

public void destroy()

Description copied from class: Source

Called at the end to clean all the resources consumed

Specified by:

destroy in class Source

pause

public void pause()

Description copied from class: Source

Called to pause event consumption

Specified by:

pause in class Source

resume

public void resume()

Description copied from class: Source

Called to resume event consumption

Specified by:

resume in class Source