EdgeDeviceGroup

A composition node grouping EdgeDevices and other EdgeDeviceGroups with multiplicities. Lets a deployment template (a building, a vehicle, a fleet) describe how many of each device it contains, with arbitrary nesting.

Common pitfalls

Cycles in the group hierarchy are forbidden — a group cannot contain itself transitively. The model raises error if a cycle is introduced. Counts in EdgeDeviceGroup.sub_group_counts and EdgeDeviceGroup.edge_device_counts must be dimensionless and non-negative.

Params

name

A human readable description of the object.

sub_group_counts

Mapping from child EdgeDeviceGroup to how many copies of it this group contains.

edge_device_counts

Mapping from EdgeDevice to how many of it this group contains.

Backwards links

Calculated attributes

counts_validation

Validates that every count in this group is dimensionless and non-negative.

Example value: no value

Depends directly on:

through the following calculations:

You can also visit the link to no value’s full calculation graph.

no_cycle_validation

Validates that the group does not contain itself transitively, and that no nested sub-group does either.

Example value: no value

Depends directly on:

through the following calculations:

You can also visit the link to no value’s full calculation graph.

effective_nb_of_units_within_root

How many copies of this group exist when the hierarchy is unrolled from the root group: 1 for a root group, otherwise the sum across each parent of (parent's effective count) times (count of this group within that parent).

Example value: 1

Depends directly on:

through the following calculations:

You can also visit the link to root group count of 1’s full calculation graph.