Package ZenHub :: Package services :: Module RRDImpl :: Class RRDImpl

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Class RRDImpl

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RRDUtil wrapper class for zenhub

Instance Methods

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__init__(self, dmd)
Initializer

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number or None

writeRRD(self, devId, compType, compId, dpName, value)
Write the given data to its RRD file.

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string

getDefaultRRDCreateCommand(self, device)
Get the overridable create command for new RRD files.

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object

getDeviceOrComponent(self, devId, compId, compType)
If a compId is given then try to return that component.

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checkThresholds(self, dev, dp, value)
Check the given value against any thresholds.

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Class Variables

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LONG_RRD_TYPES = ['COUNTER', 'DERIVE']

Method Details

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init(self, dmd)
(Constructor)

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Initializer

Parameters:

dmd (dmd object) - Device Management Database (DMD) reference

writeRRD(self, devId, compType, compId, dpName, value)

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Write the given data to its RRD file. Also check any thresholds and send events if value is out of bounds. Note that if the write does not succeed, a None value is returned.

Parameters:

devId (string) - device name (as known by DMD)
compType (string) - component type (found in objects meta_type field)
compId (string) - name of the component
dpName (string) - name of the data point
value (number) - performance metric to store

Returns: number or None

valid value (ie long or float) or None

getDefaultRRDCreateCommand(self, device)

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Get the overridable create command for new RRD files.

Parameters:

device (device object) - device object from in DMD

Returns: string

RRD create command

getDeviceOrComponent(self, devId, compId, compType)

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If a compId is given then try to return that component. If unable to find it or if compId is not specified then try to return the given device. If unable to find then return None.

Parameters:

devId (string) - device name (as known by DMD)
compId (string) - name of the component
compType (string) - component type (found in objects meta_type field)

Returns: object

device or component object

checkThresholds(self, dev, dp, value)

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Check the given value against any thresholds. Count the number of times a dp has exceeded a given threshold in self.counts. Send events as appropriate.

Parameters:

dev (object) - device or component object
dp (RRD datapoint object) - datapoint
value (number) - performance metric to compare

Class RRDImpl

__init__(self, dmd) (Constructor)

writeRRD(self, devId, compType, compId, dpName, value)

getDefaultRRDCreateCommand(self, device)

getDeviceOrComponent(self, devId, compId, compType)

checkThresholds(self, dev, dp, value)

init(self, dmd)
(Constructor)