Sensor database model

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

Bases: django.db.models.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: django.core.exceptions.ObjectDoesNotExist

exception MultipleObjectsReturned

Bases: django.core.exceptions.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

ipdevpoll plugin to collect sensor data.

This plugin can use any MibRetriever class that provides the get_all_sensors() method to discover and store information about physical environmental sensors available for readout on a device.

Which MibRetriever classes to use for each type of device is configured in the [sensors] and [sensors:vendormibs] sections of ipdevpoll.conf.

class nav.ipdevpoll.plugins.sensors.Sensors(netbox, agent, containers, config: Optional[nav.ipdevpoll.config.IpdevpollConfig] = None)

Bases: nav.ipdevpoll.Plugin

Plugin to detect environmental sensors in netboxes

handle()

Collects sensors and feed them in to persistent store.

mibfactory()

Returns a list of MibRetriever instances, as configured in ipdevpoll.conf, to use for retrieving sensors from this netbox.

classmethod on_plugin_load()

Called as the plugin class is loaded in the plugin registry.

Can be used to perform any kind of initialization task that doesn’t fit into module-level initialization.

nav.ipdevpoll.plugins.sensors.get_mib_map(config)

nav.ipdevpoll.plugins.sensors.loadmodules(config)