org.sleuthkit.autopsy.coordinationservice.CoordinationService Class Reference

Classes
enum	CategoryNode
class	CoordinationServiceException
class	Lock

Public Member Functions
void	deleteNode (CategoryNode category, String nodePath) throws CoordinationServiceException, InterruptedException
byte[]	getNodeData (CategoryNode category, String nodePath) throws CoordinationServiceException, InterruptedException
List< String >	getNodeList (CategoryNode category) throws CoordinationServiceException, InterruptedException
void	setNodeData (CategoryNode category, String nodePath, byte[] data) throws CoordinationServiceException, InterruptedException
Lock	tryGetExclusiveLock (CategoryNode category, String nodePath, int timeOut, TimeUnit timeUnit) throws CoordinationServiceException, InterruptedException
Lock	tryGetExclusiveLock (CategoryNode category, String nodePath) throws CoordinationServiceException
Lock	tryGetSharedLock (CategoryNode category, String nodePath, int timeOut, TimeUnit timeUnit) throws CoordinationServiceException, InterruptedException
Lock	tryGetSharedLock (CategoryNode category, String nodePath) throws CoordinationServiceException

Static Public Member Functions
static synchronized CoordinationService	getInstance () throws CoordinationServiceException

Private Member Functions
	CoordinationService (String rootNodeName) throws InterruptedException, IOException, KeeperException, CoordinationServiceException
String	getFullyQualifiedNodePath (CategoryNode category, String nodePath)

Private Attributes
final Map< String, String >	categoryNodeToPath
final CuratorFramework	curator

Static Private Attributes
static final int	CONNECTION_TIMEOUT_MILLISECONDS = 300000
static final String	DEFAULT_NAMESPACE_ROOT = "autopsy"
static CoordinationService	instance
static final int	PORT_OFFSET = 1000
static final int	SESSION_TIMEOUT_MILLISECONDS = 300000

Detailed Description

A coordination service for maintaining configuration information and providing distributed synchronization using a shared hierarchical namespace of nodes.

Definition at line 50 of file CoordinationService.java.

Constructor & Destructor Documentation

org.sleuthkit.autopsy.coordinationservice.CoordinationService.CoordinationService ( String  rootNodeName ) throws InterruptedException, IOException, KeeperException, CoordinationServiceException

private

Constructs an instance of the coordination service for a specific namespace.

Parameters

rootNodeName

The name of the root node that defines the namespace.

Exceptions

Exception

(calls Curator methods that throw Exception instead of more specific exceptions)

Definition at line 108 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.categoryNodeToPath, org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator, org.sleuthkit.autopsy.core.UserPreferences.getIndexingServerHost(), org.sleuthkit.autopsy.core.UserPreferences.getIndexingServerPort(), org.sleuthkit.autopsy.core.UserPreferences.getZkServerHost(), org.sleuthkit.autopsy.core.UserPreferences.getZkServerPort(), and org.sleuthkit.autopsy.coordinationservice.utils.CoordinationServiceUtils.isZooKeeperAccessible().

Referenced by org.sleuthkit.autopsy.coordinationservice.CoordinationService.getInstance().

Member Function Documentation

void org.sleuthkit.autopsy.coordinationservice.CoordinationService.deleteNode	(	CategoryNode	category,
		String	nodePath
	)		throws CoordinationServiceException, InterruptedException

Deletes a specified node.

Parameters

category	The desired category in the namespace.
nodePath	The node to be deleted.

Exceptions

CoordinationServiceException	If there is an error deleting the node.
java.lang.InterruptedException	If a thread interrupt occurs while blocked waiting for the operation to complete.

Definition at line 357 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath().

Referenced by org.sleuthkit.autopsy.casemodule.Case.deleteMultiUserCase().

String org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath ( CategoryNode  category, String  nodePath  )

private

Creates a node path within a given category.

Parameters

category	A category node.
nodePath	A node path relative to a category node path.

Returns

Definition at line 404 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.categoryNodeToPath, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.CategoryNode.getDisplayName().

Referenced by org.sleuthkit.autopsy.coordinationservice.CoordinationService.deleteNode(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.getNodeData(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.setNodeData(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.tryGetExclusiveLock(), and org.sleuthkit.autopsy.coordinationservice.CoordinationService.tryGetSharedLock().

static synchronized CoordinationService org.sleuthkit.autopsy.coordinationservice.CoordinationService.getInstance ( ) throws CoordinationServiceException

static

Gets the coordination service for maintaining configuration information and providing distributed synchronization using a shared hierarchical namespace of nodes.

Returns

The corrdination service.

Exceptions

CoordinationServiceException

Definition at line 71 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.CoordinationService(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.DEFAULT_NAMESPACE_ROOT, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.instance.

Referenced by org.sleuthkit.autopsy.casemodule.Case.acquireCaseLock(), org.sleuthkit.autopsy.casemodule.Case.acquireCaseResourcesLock(), org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeData.createCaseNodeData(), org.sleuthkit.autopsy.casemodule.Case.deleteMultiUserCase(), org.sleuthkit.autopsy.healthmonitor.HealthMonitor.getExclusiveDbLock(), org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeDataCollector.getNodeData(), org.sleuthkit.autopsy.healthmonitor.HealthMonitor.getSharedDbLock(), org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeData.readCaseNodeData(), and org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeData.writeCaseNodeData().

byte [] org.sleuthkit.autopsy.coordinationservice.CoordinationService.getNodeData	(	CategoryNode	category,
		String	nodePath
	)		throws CoordinationServiceException, InterruptedException

Retrieve the data associated with the specified node.

Parameters

category	The desired category in the namespace.
nodePath	The node to retrieve the data for.

Returns

The data associated with the node, if any, or null if the node has not been created yet.

Exceptions

CoordinationServiceException	If there is an error setting the node data.
InterruptedException	If interrupted while blocked during setting of node data.

Definition at line 305 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath().

Referenced by org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeData.readCaseNodeData().

List<String> org.sleuthkit.autopsy.coordinationservice.CoordinationService.getNodeList

(

CategoryNode

category

)

throws CoordinationServiceException, InterruptedException

Gets a list of the child nodes of a category in the namespace.

Parameters

category

The desired category in the namespace.

Returns

A list of child node names.

Exceptions

CoordinationServiceException	If there is an error getting the node list.
java.lang.InterruptedException	If a thread interrupt occurs while blocked waiting for the operation to complete.

Definition at line 383 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.categoryNodeToPath, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator.

Referenced by org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeDataCollector.getNodeData().

void org.sleuthkit.autopsy.coordinationservice.CoordinationService.setNodeData	(	CategoryNode	category,
		String	nodePath,
		byte[]	data
	)		throws CoordinationServiceException, InterruptedException

Store the given data with the specified node.

Parameters

category	The desired category in the namespace.
nodePath	The node to associate the data with.
data	The data to store with the node.

Exceptions

CoordinationServiceException	If there is an error setting the node data.
InterruptedException	If interrupted while blocked during setting of node data.

Definition at line 332 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath().

Referenced by org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeData.createCaseNodeData(), and org.sleuthkit.autopsy.casemodule.multiusercases.CaseNodeData.writeCaseNodeData().

Lock org.sleuthkit.autopsy.coordinationservice.CoordinationService.tryGetExclusiveLock	(	CategoryNode	category,
		String	nodePath,
		int	timeOut,
		TimeUnit	timeUnit
	)		throws CoordinationServiceException, InterruptedException

Tries to get an exclusive lock on a node path appended to a category path in the namespace managed by this coordination service. Blocks until the lock is obtained or the time out expires.

IMPORTANT: The lock needs to be released in the same thread in which it is acquired.

Parameters

category	The desired category in the namespace.
nodePath	The node path to use as the basis for the lock.
timeOut	Length of the time out.
timeUnit	Time unit for the time out.

Returns

The lock, or null if lock acquisition timed out.

Exceptions

CoordinationServiceException	If there is an error during lock acquisition.
InterruptedException	If interrupted while blocked during lock acquisition.

Definition at line 177 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath().

Referenced by org.sleuthkit.autopsy.casemodule.Case.acquireCaseLock(), org.sleuthkit.autopsy.casemodule.Case.acquireCaseResourcesLock(), org.sleuthkit.autopsy.casemodule.Case.deleteMultiUserCase(), and org.sleuthkit.autopsy.healthmonitor.HealthMonitor.getExclusiveDbLock().

Lock org.sleuthkit.autopsy.coordinationservice.CoordinationService.tryGetExclusiveLock	(	CategoryNode	category,
		String	nodePath
	)		throws CoordinationServiceException

Tries to get an exclusive lock on a node path appended to a category path in the namespace managed by this coordination service. Returns immediately if the lock can not be acquired.

IMPORTANT: The lock needs to be released in the same thread in which it is acquired.

Parameters

category	The desired category in the namespace.
nodePath	The node path to use as the basis for the lock.

Returns

The lock, or null if the lock could not be obtained.

Exceptions

CoordinationServiceException

If there is an error during lock acquisition.

Definition at line 211 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath().

Lock org.sleuthkit.autopsy.coordinationservice.CoordinationService.tryGetSharedLock	(	CategoryNode	category,
		String	nodePath,
		int	timeOut,
		TimeUnit	timeUnit
	)		throws CoordinationServiceException, InterruptedException

Tries to get a shared lock on a node path appended to a category path in the namespace managed by this coordination service. Blocks until the lock is obtained or the time out expires.

IMPORTANT: The lock needs to be released in the same thread in which it is acquired.

Parameters

category	The desired category in the namespace.
nodePath	The node path to use as the basis for the lock.
timeOut	Length of the time out.
timeUnit	Time unit for the time out.

Returns

The lock, or null if lock acquisition timed out.

Exceptions

CoordinationServiceException	If there is an error during lock acquisition.
InterruptedException	If interrupted while blocked during lock acquisition.

Definition at line 244 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath().

Referenced by org.sleuthkit.autopsy.casemodule.Case.acquireCaseLock(), and org.sleuthkit.autopsy.healthmonitor.HealthMonitor.getSharedDbLock().

Lock org.sleuthkit.autopsy.coordinationservice.CoordinationService.tryGetSharedLock	(	CategoryNode	category,
		String	nodePath
	)		throws CoordinationServiceException

Tries to get a shared lock on a node path appended to a category path in the namespace managed by this coordination service. Returns immediately if the lock can not be acquired.

IMPORTANT: The lock needs to be released in the same thread in which it is acquired.

Parameters

category	The desired category in the namespace.
nodePath	The node path to use as the basis for the lock.

Returns

The lock, or null if the lock could not be obtained.

Exceptions

CoordinationServiceException

If there is an error during lock acquisition.

Definition at line 278 of file CoordinationService.java.

References org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator, and org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath().

Member Data Documentation

final Map<String, String> org.sleuthkit.autopsy.coordinationservice.CoordinationService.categoryNodeToPath

private

Definition at line 60 of file CoordinationService.java.

Referenced by org.sleuthkit.autopsy.coordinationservice.CoordinationService.CoordinationService(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.getFullyQualifiedNodePath(), and org.sleuthkit.autopsy.coordinationservice.CoordinationService.getNodeList().

final int org.sleuthkit.autopsy.coordinationservice.CoordinationService.CONNECTION_TIMEOUT_MILLISECONDS = 300000

staticprivate

Definition at line 53 of file CoordinationService.java.

final CuratorFramework org.sleuthkit.autopsy.coordinationservice.CoordinationService.curator

private

Definition at line 58 of file CoordinationService.java.

Referenced by org.sleuthkit.autopsy.coordinationservice.CoordinationService.CoordinationService(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.deleteNode(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.getNodeData(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.getNodeList(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.setNodeData(), org.sleuthkit.autopsy.coordinationservice.CoordinationService.tryGetExclusiveLock(), and org.sleuthkit.autopsy.coordinationservice.CoordinationService.tryGetSharedLock().

final String org.sleuthkit.autopsy.coordinationservice.CoordinationService.DEFAULT_NAMESPACE_ROOT = "autopsy"

staticprivate

Definition at line 55 of file CoordinationService.java.

Referenced by org.sleuthkit.autopsy.coordinationservice.CoordinationService.getInstance().

CoordinationService org.sleuthkit.autopsy.coordinationservice.CoordinationService.instance

staticprivate

Definition at line 57 of file CoordinationService.java.

Referenced by org.sleuthkit.autopsy.coordinationservice.CoordinationService.getInstance().

final int org.sleuthkit.autopsy.coordinationservice.CoordinationService.PORT_OFFSET = 1000

staticprivate

Definition at line 54 of file CoordinationService.java.

final int org.sleuthkit.autopsy.coordinationservice.CoordinationService.SESSION_TIMEOUT_MILLISECONDS = 300000

staticprivate

Definition at line 52 of file CoordinationService.java.

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The documentation for this class was generated from the following file:

• /home/carriersleuth/repos/autopsy/Core/src/org/sleuthkit/autopsy/coordinationservice/CoordinationService.java