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A timer keeps track of the number of seconds passed during it's
lifetime and since the last reset.
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A monitor tracks the number of pings it received during it's
lifetime and since the last reset. The component being monitored
is responsible for calling C{ping()} everytime a monitored
activity occurs. It should register a reactor event that logs
statistics from this monitor every N seconds. Essentially,
monitors are just statistics checkers that components can use to
monitor themselves.
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event_namet countt total_count( R R R ( ( s9 /usr/lib/python2.7/dist-packages/landscape/lib/monitor.pyR * s c C s" | j d 7_ | j d 7_ d S( Ni ( R R ( R ( ( s9 /usr/lib/python2.7/dist-packages/landscape/lib/monitor.pyt ping0 s c C s t t | ƒ j ƒ d | _ d S( Ni ( R R R R ( R ( ( s9 /usr/lib/python2.7/dist-packages/landscape/lib/monitor.pyR 4 s c C s6 t j d | j | j t | j ƒ ƒ ƒ | j ƒ d S( Ns% %d %s events occurred in the last %s.( t loggingt infoR R R R R ( R ( ( s9 /usr/lib/python2.7/dist-packages/landscape/lib/monitor.pyt log8 s N( R
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A burst monitor tracks the volume pings it receives. It goes into
warn mode when too many pings are received in a short period of
time.
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A coverage monitor tracks the volume of pings received since the
last reset. It has normal and warn states that are determined by
calculating the number of expected pings since the last reset. If
the actual number of pings falls below the minimum required
percent the monitor goes into warn mode. The component being
monitored should register a reactor event that logs statistics
from this monitor every N seconds.
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R R R R t propertyR* R' R R$ ( ( ( s9 /usr/lib/python2.7/dist-packages/landscape/lib/monitor.pyR% \ s t FrequencyMonitorc B sD e Z d Z d d „ Z e d „ ƒ Z d „ Z d „ Z d „ Z RS( sz
A frequency monitor tracks the number of pings received during a
fixed period of time. It has normal and warn states; a warn state
is triggered when the minimum expected pings were not received
during the specified interval. The component being monitored
should register a reactor event that checks the warn state of this
monitor every N seconds.
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