org.gridgain.grid.kernal.managers

Class GridNoopManagerAdapter

java.lang.Object

org.gridgain.grid.kernal.managers.GridNoopManagerAdapter

All Implemented Interfaces:

GridComponent, GridManager

Direct Known Subclasses:

GridOsSecureSessionManager, GridOsSecurityManager

public class GridNoopManagerAdapter
extends Object
implements GridManager

No-op GridManager adapter.

Constructor Summary

Constructors

Constructor and Description
GridNoopManagerAdapter(GridKernalContext ctx)

Method Summary

Methods

Modifier and Type	Method and Description
void	addSpiAttributes(Map<String,Object> attrs) Adds attributes from underlying SPI to map of all attributes.
Object	collectDiscoveryData(UUID nodeId) Gets discovery data object that will be sent to new node during discovery process.
boolean	enabled()
void	onDiscoveryDataReceived(Object data) Receives discovery data object from remote nodes (called on new node during discovery process).
void	onKernalStart() Callback that notifies that kernal has successfully started, including all managers and processors.
void	onKernalStop(boolean cancel) Callback to notify that kernal is about to stop.
void	printMemoryStats() Prints memory statistics (sizes of internal structures, etc.).
void	start() Starts grid component.
void	stop(boolean cancel) Stops grid component.
GridNodeValidationResult	validateNode(GridNode node) Validates that new node can join grid topology, this method is called on coordinator node before new node joins topology.

Methods inherited from class java.lang.Object

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

Constructor Detail

GridNoopManagerAdapter

public GridNoopManagerAdapter(GridKernalContext ctx)

Parameters:

ctx - Kernal context.

Method Detail

addSpiAttributes

public void addSpiAttributes(Map<String,Object> attrs)
                      throws GridException

Adds attributes from underlying SPI to map of all attributes.

Specified by:

addSpiAttributes in interface GridManager

Parameters:

attrs - Map of all attributes gotten from SPI's so far.

Throws:

GridException - Wrapper for exception thrown by underlying SPI.

enabled

public boolean enabled()

Specified by:

enabled in interface GridManager

Returns:

Returns true if at least one SPI does not have a NO-OP implementation, false otherwise.

start

public void start()
           throws GridException

Starts grid component.

Specified by:

start in interface GridComponent

Throws:

GridException - Throws in case of any errors.

stop

public void stop(boolean cancel)
          throws GridException

Stops grid component.

Specified by:

stop in interface GridComponent

Parameters:

cancel - If true, then all ongoing tasks or jobs for relevant components need to be cancelled.

Throws:

GridException - Thrown in case of any errors.

onKernalStart

public void onKernalStart()
                   throws GridException

Callback that notifies that kernal has successfully started, including all managers and processors.

Specified by:

onKernalStart in interface GridComponent

Throws:

GridException - Thrown in case of any errors.

onKernalStop

public void onKernalStop(boolean cancel)

Callback to notify that kernal is about to stop.

Specified by:

onKernalStop in interface GridComponent

Parameters:

cancel - Flag indicating whether jobs should be canceled.

collectDiscoveryData

@Nullable
public Object collectDiscoveryData(UUID nodeId)

Gets discovery data object that will be sent to new node during discovery process.

Specified by:

collectDiscoveryData in interface GridComponent

Parameters:

nodeId - ID of new node that joins topology.

Returns:

Discovery data object or null if there is nothing to send for this component.

onDiscoveryDataReceived

public void onDiscoveryDataReceived(Object data)

Receives discovery data object from remote nodes (called on new node during discovery process).

Specified by:

onDiscoveryDataReceived in interface GridComponent

Parameters:

data - Discovery data object or null if nothing was sent for this component.

printMemoryStats

public void printMemoryStats()

Prints memory statistics (sizes of internal structures, etc.). NOTE: this method is for testing and profiling purposes only.

Specified by:

printMemoryStats in interface GridComponent

validateNode

@Nullable
public GridNodeValidationResult validateNode(GridNode node)

Validates that new node can join grid topology, this method is called on coordinator node before new node joins topology.

Specified by:

validateNode in interface GridComponent

Parameters:

node - Joining node.

Returns:

Validation result or null in case of success.