Due to a ransomware attack, the wiki was reverted to a July 2022 version. . We apologize for the lack of a more recent valid backup.
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Recognizing that different families of devices may share features, but also support unique ones, the ONOS driver mechanism avoids monolithic driver approach. Instead, it promotes segmenting different facets of behaviour so that support for features can be selective, can potentially come from different sources and can be shared via inheritance within a product family, whose devices may share similar characteristics.
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Definitions
In ONOS, a Driver is a representation of a specific family of devices or a specific device. As such, it:
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Please observe that this effectively means that in ONOS, the principal modeling language is Java. This certainly does not preclude from using other modeling languages, e.g. YAML, YANG, SNMP-MIB schema, Loxi Lua to define semantics and syntax for interacting with devices, but such models are to be employed solely by the implementations of the drivers (or of ONOS providers) to guide/implement the interactions with the device. Apps and other ONOS subsystems should be completely independent of such modeling languages and should instead drive their interactions through the prescribed Behaviour abstractions.
Contexts
DriverData is a container for data learned about a device in prior interactions. It
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