com.pervasive.datarush.graphs

Interface StatisticsRegistry

public interface StatisticsRegistry

For advanced use only; operator authors should not need to access this class. Provides a way to register statistics instrumentation with the framework.

Field Summary

Fields

Modifier and Type	Field and Description
static StatisticsRegistry	DISABLED A disabled statistics registry

Method Summary

Methods

Modifier and Type	Method and Description
StatisticsRegistry	forAssignment(NodeAllocationState.AssignmentState assignment) Returns a statistics registry, re-scoped for the given assignment
boolean	isConnection() Is the current registry scoped for connections? Returns true if the stats that are registered will be for connections.
boolean	isEnabled() Returns whether statistics are enabled.
void	register(RuntimeStatistic<?> statistic) Registers the given statistics object.
<T extends StatisticSupplier> void	register(StatisticDefinition<T> definition, T supplier) Registers the given statistics object.

Field Detail

DISABLED

static final StatisticsRegistry DISABLED

A disabled statistics registry

Method Detail

isEnabled

boolean isEnabled()

Returns whether statistics are enabled.

Returns:

whether statistics are enabled.

isConnection

boolean isConnection()

Is the current registry scoped for connections? Returns true if the stats that are registered will be for connections. False if for operators.

Returns:

whether the registry is scoped for connections

register

<T extends StatisticSupplier> void register(StatisticDefinition<T> definition,
                                          T supplier)

Registers the given statistics object. This call is ignored if statistics are not enabled.

Type Parameters:

T - the type of statistic supplier

Parameters:

definition - the statistic definition

supplier - the statistic supplier; must be a live statistics object.

register

void register(RuntimeStatistic<?> statistic)

Registers the given statistics object. This call is ignored if statistics are not enabled.

Parameters:

statistic - the statistics object; must be a live statistics object.

forAssignment

StatisticsRegistry forAssignment(NodeAllocationState.AssignmentState assignment)

Returns a statistics registry, re-scoped for the given assignment

Parameters:

assignment - the assignment

Returns:

a statistics registry