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 java.lang.Object

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

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
DiagnosticEvent()

Method Summary

Modifier and Type	Method and Description
abstract java.lang.Enum<?>	getType() Returns event type discriminator.
abstract java.util.Map<java.lang.String,java.io.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 Detail

timestamp

public final long timestamp

Event creation time.

threadName

public final java.lang.String threadName

Name of allocating thread.

Constructor Detail

DiagnosticEvent

public DiagnosticEvent()

Method Detail

getType

public abstract java.lang.Enum<?> getType()

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

toMap

public abstract java.util.Map<java.lang.String,java.io.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.