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Class
|
Cluster
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Description
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ASSERTION
|
EVENTS
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Represents a single type of important predicate that the system
should validate. Assertion failures result in everything from
messages or statistics being logged to system failure.
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CHECKER
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PROCESSING
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Checks the state of the system for validity against particular
assertions.
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COLLECTOR
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PROCESSING
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Performs the collection of particular statistics during the
operation of a program. Individual statistics can be registered for
collection, and may be activated or deactivated. The collector can
cache statistic collection in memory, and can also write statistics
and logging information to a long-term storage device for
subsequent analysis.
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EVENT
|
EVENTS
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Represents a single important event of any kind. The event includes
a source, description, importance, and time, among other things.
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LEVEL
|
EVENTS
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Represents the importance level of a particular event.
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LOG
|
EVENTS
|
Manages the storage and retrieval of events that are reported by
various parts of the system framework and/or the application built
on top of it.
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|
LOGGER
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PROCESSING
|
Performs the collection of particular statistics during the
operation of a program. Individual statistics can be registered for
collection, and may be activated or deactivated. The collector can
cache statistic collection in memory, and can also write statistics
and logging information to a long-term storage device for
subsequent analysis.
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|
MESSAGE
|
EVENTS
|
Represents a single textual message that needs to be displayed or
recorded.
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STATISTIC
|
EVENTS
|
This class represents a statistic that can be monitored in the
monitoring system. Each statistic has its own unique ID
(node-unique, not necessarily globally unique), a description,
units, and other useful information that is represented in this
class.
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|
TUNER
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PROCESSING
|
"Tune" the monitoring system to collect specific types and levels
of system statistics, messages, and assertions.
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TYPE
|
EVENTS
|
Represents the type of a particular event. The set of core event
types each have such a name and a description.
|