Sensor database model

class nav.models.manage.Sensor(*args, **kwargs)

Bases: Model

This table contains meta-data about available sensors in network equipment.

Information from this table is used to poll metrics and display graphs for sensor data.

Parameters:

• id (AutoField) – Primary key: Id

• oid (VarcharField) – Oid

• unit_of_measurement (VarcharField) – Unit of measurement

• data_scale (VarcharField) – Data scale

• precision (IntegerField) – Precision

• human_readable (VarcharField) – Human readable

• name (VarcharField) – Name

• internal_name (VarcharField) – Internal name

• mib (VarcharField) – Mib

• display_minimum_user (FloatField) – Display minimum user

• display_maximum_user (FloatField) – Display maximum user

• display_minimum_sys (FloatField) – Display minimum sys

• display_maximum_sys (FloatField) – Display maximum sys

• on_message_user (VarcharField) – On message user

• on_message_sys (VarcharField) – On message sys

• off_message_user (VarcharField) – Off message user

• off_message_sys (VarcharField) – Off message sys

• on_state_user (IntegerField) – On state user

• on_state_sys (IntegerField) – On state sys

• alert_type (IntegerField) – Alert type

Relationship fields:

Parameters:

• netbox (ForeignKey to Netbox) – Netbox (related name: sensors)

• interface (ForeignKey to Interface) – Interface (related name: sensors)

exception DoesNotExist

Bases: ObjectDoesNotExist

exception MultipleObjectsReturned

Bases: MultipleObjectsReturned

get_graph(format='png')

Returns a Graph object describing a simple Graphite graph URL for this sensor.

Parameters:

format – The format of the desired graph, e.g. png or json

Return type:

Graph

property normalized_unit

Try to normalize the unit of measurement.

The unit_of_measurement is the value reported by the device, and is all sorts of stuff like percentRH, Celcius. Here we try to normalize those units (in a very basic way).

ipdevpoll sensor plugin