Package org.odpi.openmetadata.governanceservers.enginehostservices.enginemap

Class GovernanceEngineMap

java.lang.Object

org.odpi.openmetadata.governanceservers.enginehostservices.enginemap.GovernanceEngineMap

public class GovernanceEngineMap
extends Object

GovernanceEngineMap provides a thread safe mapping of governance engine names to governance engine handlers. This class allows the governance engine handler to be added after the engine host has started processing requests. It is not possible to create the governance handler until the governance engine definition has been retrieved from the metadata access server. So, unless the engine definition is linked explicitly to an engine service, the type of the governance engine handler is unknown. Retrieval of a governance engine definition may be triggered by an event, or by a refresh sweep of the metadata. Therefore, it is possible that two threads are responding to the creation of a new governance engine definition. Hence, the synchronized methods

Constructor Summary

Constructors

Constructor	Description
GovernanceEngineMap(String localServerName, String localServerUserId, AuditLog auditLog, int maxPageSize)	Create a client-side object for calling a survey action engine.

Method Summary

Modifier and Type	Method	Description
GovernanceEngineHandler	getGovernanceEngineHandler(String governanceEngineName)	Return the governance engine handler for a specific governance engine name if known.
GovernanceEngineHandler	getGovernanceEngineHandler(EngineConfig governanceEngine)	Return the governance engine handler for a specific governance engine name if known.
List<GovernanceEngineHandler>	getGovernanceEngineHandlers()	Return the list of active governance engine handlers.
List<String>	getGovernanceEngineNames()	Return the list of the configured engines.
List<String>	getGovernanceEngineNames(String serviceURLMarker)	Return the list of the configured engines for a particular engine service.
void	setGovernanceEngineProperties(EngineConfig engineConfig, OpenMetadataEventClient eventClient, EngineConfigurationRefreshThread configurationRefreshThread)	Set up a placeholder entry in the governance handler map for a governance engine.
void	shutdown()	Shutdown all engines ...

Methods inherited from class java.lang.Object

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

Constructor Details

GovernanceEngineMap

public GovernanceEngineMap(String localServerName,
 String localServerUserId,
 AuditLog auditLog,
 int maxPageSize)

Create a client-side object for calling a survey action engine.

Parameters:

localServerName - the name of the engine host server where the survey action engine is running

localServerUserId - user id for the engine host server to use

auditLog - logging destination

maxPageSize - maximum number of results that can be returned in a single request

Method Details

getGovernanceEngineHandler

public GovernanceEngineHandler getGovernanceEngineHandler(String governanceEngineName)

Return the governance engine handler for a specific governance engine name if known. If the handler does not yet exist, an attempt is made to create it. If this fails, null is returned

Parameters:

governanceEngineName - engine to lookup

Returns:

handler or null

getGovernanceEngineHandler

public GovernanceEngineHandler getGovernanceEngineHandler(EngineConfig governanceEngine)

Return the governance engine handler for a specific governance engine name if known. If the handler does not yet exist, an attempt is made to create it. If this fails, null is returned

Parameters:

governanceEngine - engine to lookup

Returns:

handler or null

getGovernanceEngineHandlers

public List<GovernanceEngineHandler> getGovernanceEngineHandlers()

Return the list of active governance engine handlers.

Returns:

list of governance engine handlers or an empty list

getGovernanceEngineNames

public List<String> getGovernanceEngineNames()

Return the list of the configured engines.

Returns:

list of engine names

getGovernanceEngineNames

public List<String> getGovernanceEngineNames(String serviceURLMarker)

Return the list of the configured engines for a particular engine service.

Parameters:

serviceURLMarker - marker that determines which engine service is calling.

Returns:

list of engine names

setGovernanceEngineProperties

public void setGovernanceEngineProperties(EngineConfig engineConfig,
 OpenMetadataEventClient eventClient,
 EngineConfigurationRefreshThread configurationRefreshThread)
                                   throws InvalidParameterException

Set up a placeholder entry in the governance handler map for a governance engine.

Parameters:

engineConfig - description of the engine

eventClient - client for receiving events

configurationRefreshThread - thread for controlling the receipt of events.

Throws:

InvalidParameterException - Problem create the client

shutdown

public void shutdown()

Shutdown all engines ...