Package org.apache.cassandra.diag

Class DiagnosticEvent

java.lang.Object

org.apache.cassandra.diag.DiagnosticEvent

Direct Known Subclasses:

AuditEvent, GossiperEvent, SchemaEvent, TokenMetadataEvent

public abstract class DiagnosticEvent
extends Object

Base class for internally emitted events used for diagnostics and testing.

Field Summary

Fields

Modifier and Type	Field	Description
final String	threadName	Name of allocating thread.
final long	timestamp	Event creation time.

Constructor Summary

Constructors

Constructor	Description
DiagnosticEvent()

Method Summary

Modifier and Type	Method	Description
abstract Enum<?>	getType()	Returns event type discriminator.
abstract Map<String,Serializable>	toMap()	Returns map of key-value pairs containing relevant event details.

Methods inherited from class java.lang.Object

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

Field Details

timestamp

public final long timestamp

Event creation time.

threadName

public final String threadName

Name of allocating thread.

Constructor Details

DiagnosticEvent

public DiagnosticEvent()

Method Details

getType

public abstract Enum<?> getType()

Returns event type discriminator. This will usually be a enum value.

toMap

public abstract Map<String,Serializable> toMap()

Returns map of key-value pairs containing relevant event details. Values can be complex objects like other maps, but must be Serializable, as returned values may be consumed by external clients. It's strongly recommended to stick to standard Java classes to avoid distributing custom classes to clients and also prevent potential class versioning conflicts.