Package org.apache.cassandra.diag

Interface DiagnosticEventServiceMBean

All Known Implementing Classes:

DiagnosticEventService

public interface DiagnosticEventServiceMBean

Provides JMX enabled attributes and operations implemented by DiagnosticEventService.

Method Summary

Modifier and Type	Method	Description
void	disableDiagnostics()	Kill switch for disabling all events immediately, without restarting the node.
void	disableEventPersistence(java.lang.String eventClazz)	Stop storing events.
void	enableEventPersistence(java.lang.String eventClazz)	Start storing events to make them available via readEvents(String, Long, int).
boolean	isDiagnosticsEnabled()
java.util.SortedMap<java.lang.Long,java.util.Map<java.lang.String,java.io.Serializable>>	readEvents(java.lang.String eventClazz, java.lang.Long lastKey, int limit)	Retrieved all events of specified type starting with provided key.

Method Detail

isDiagnosticsEnabled

boolean isDiagnosticsEnabled()

disableDiagnostics

void disableDiagnostics()

Kill switch for disabling all events immediately, without restarting the node. Please edit cassandra.yaml for making this permanent.

readEvents

java.util.SortedMap<java.lang.Long,java.util.Map<java.lang.String,java.io.Serializable>> readEvents(java.lang.String eventClazz,
                                                                                                                java.lang.Long lastKey,
                                                                                                                int limit)

Retrieved all events of specified type starting with provided key. Result will be sorted chronologically.

Parameters:

eventClazz - fqn of event class

lastKey - ID of first event to retrieve

limit - number of results to return

enableEventPersistence

void enableEventPersistence(java.lang.String eventClazz)

Start storing events to make them available via readEvents(String, Long, int).

disableEventPersistence

void disableEventPersistence(java.lang.String eventClazz)

Stop storing events.