Package io.nflow.engine

Class NflowEngine

java.lang.Object

io.nflow.engine.NflowEngine

All Implemented Interfaces:

AutoCloseable

public class NflowEngine
extends Object
implements AutoCloseable

NflowEngine starts up nflow-engine with given database and workflow definitions. Use this if you want to start just the nflow-engine.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	NflowEngine.NflowEngineSpringConfig

Constructor Summary

Constructors

Constructor	Description
NflowEngine(DataSource dataSource, SQLVariants sqlVariants, Collection<WorkflowDefinition> workflowDefinitions)	Starts up the NflowEngine with WorkflowDispatcher running in a thread.

Method Summary

Modifier and Type	Method	Description
void	close()	Shuts down the nFlow engine gracefully and returns when the shutdown is complete.
HealthCheckService	getHealthCheckService()
MaintenanceService	getMaintenanceService()
StatisticsService	getStatisticsService()
WorkflowDefinitionService	getWorkflowDefinitionService()
WorkflowExecutorService	getWorkflowExecutorService()
WorkflowInstanceService	getWorkflowInstanceService()
boolean	isPaused()	Returns true if the nFlow engine is currently paused.
boolean	isRunning()	Returns true if the nFlow engine is currently running.
void	pause()	Pauses a running nFlow engine.
void	resume()	Resumes a paused nFlow engine.
void	start()	For manually starting dispatcher thread.

Methods inherited from class java.lang.Object

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

Constructor Details

NflowEngine

public NflowEngine(DataSource dataSource,
 SQLVariants sqlVariants,
 Collection<WorkflowDefinition> workflowDefinitions)

Starts up the NflowEngine with WorkflowDispatcher running in a thread. Property nflow.autostart controls if the thread is started automatically. If nflow.autostart=false, then the thread can be started with start() method.

Parameters:

dataSource - nFlow database data source.

sqlVariants - SQL variants for the configured database type.

workflowDefinitions - The registered workflow definitions.

Method Details

start

public void start()

For manually starting dispatcher thread. This starts the nflow-engine if property nflow.autostart=false.

pause

public void pause()

Pauses a running nFlow engine.

resume

public void resume()

Resumes a paused nFlow engine.

isPaused

public boolean isPaused()

Returns true if the nFlow engine is currently paused.

Returns:

True if engine is currently paused.

isRunning

public boolean isRunning()

Returns true if the nFlow engine is currently running.

Returns:

True if engine is currently running.

close

public void close()

Shuts down the nFlow engine gracefully and returns when the shutdown is complete. This NflowEngine instance may not be restarted after close().

Specified by:

close in interface AutoCloseable

getMaintenanceService

public MaintenanceService getMaintenanceService()

Returns:

ArchiveService for nFlow engine.

getHealthCheckService

public HealthCheckService getHealthCheckService()

Returns:

HealthCheckService for nFlow engine.

getStatisticsService

public StatisticsService getStatisticsService()

Returns:

StatisticsService for nFlow engine.

getWorkflowDefinitionService

public WorkflowDefinitionService getWorkflowDefinitionService()

Returns:

WorkflowDefinitionService for nFlow engine.

getWorkflowInstanceService

public WorkflowInstanceService getWorkflowInstanceService()

Returns:

WorkflowInstanceService for nFlow engine.

getWorkflowExecutorService

public WorkflowExecutorService getWorkflowExecutorService()

Returns:

WorkflowExecutorService for nFlow engine.