| # |
| # Copyright 2017 the original author or authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| """ |
| Interface definition for Voltha Adapters |
| """ |
| from zope.interface import Interface |
| |
| |
| class IAdapterInterface(Interface): |
| """ |
| A Voltha adapter |
| """ |
| |
| def start(): |
| """ |
| Called once after adapter instance is laoded. Can be used to async |
| initialization. |
| :return: (None or Deferred) |
| """ |
| |
| def stop(): |
| """ |
| Called once before adapter is unloaded. It can be used to perform |
| any cleanup after the adapter. |
| :return: (None or Deferred) |
| """ |
| |
| def adapter_descriptor(): |
| """ |
| Return the adapter descriptor object for this adapter. |
| :return: voltha.Adapter grpc object (see voltha/protos/adapter.proto), |
| with adapter-specific information and config extensions. |
| """ |
| |
| def device_types(): |
| """ |
| Return list of device types supported by the adapter. |
| :return: voltha.DeviceTypes protobuf object, with optional type |
| specific extensions. |
| """ |
| |
| def health(): |
| """ |
| Return a 3-state health status using the voltha.HealthStatus message. |
| :return: Deferred or direct return with voltha.HealthStatus message |
| """ |
| |
| def change_master_state(master): |
| """ |
| Called to indicate if plugin shall assume or lose master role. The |
| master role can be used to perform functions that must be performed |
| from a single point in the cluster. In single-node deployments of |
| Voltha, the plugins are always in master role. |
| :param master: (bool) True to indicate the mastership needs to be |
| assumed; False to indicate that mastership needs to be abandoned. |
| :return: (Deferred) which is fired by the adapter when mastership is |
| assumed/dropped, respectively. |
| """ |
| |
| def adopt_device(device): |
| """ |
| Make sure the adapter looks after given device. Called when a device |
| is provisioned top-down and needs to be activated by the adapter. |
| :param device: A voltha.Device object, with possible device-type |
| specific extensions. Such extensions shall be described as part of |
| the device type specification returned by device_types(). |
| :return: (Deferred) Shall be fired to acknowledge device ownership. |
| """ |
| |
| def abandon_device(device): |
| """ |
| Make sur ethe adapter no longer looks after device. This is called |
| if device ownership is taken over by another Voltha instance. |
| :param device: A Voltha.Device object. |
| :return: (Deferred) Shall be fired to acknowledge abandonment. |
| """ |
| |
| def disable_device(device): |
| """ |
| This is called when a previously enabled device needs to be disabled |
| based on a NBI call. |
| :param device: A Voltha.Device object. |
| :return: (Deferred) Shall be fired to acknowledge disabling the device. |
| """ |
| |
| def reenable_device(device): |
| """ |
| This is called when a previously disabled device needs to be enabled |
| based on a NBI call. |
| :param device: A Voltha.Device object. |
| :return: (Deferred) Shall be fired to acknowledge re-enabling the |
| device. |
| """ |
| |
| def reboot_device(device): |
| """ |
| This is called to reboot a device based on a NBI call. The admin |
| state of the device will not change after the reboot |
| :param device: A Voltha.Device object. |
| :return: (Deferred) Shall be fired to acknowledge the reboot. |
| """ |
| |
| def delete_device(device): |
| """ |
| This is called to delete a device from the PON based on a NBI call. |
| If the device is an OLT then the whole PON will be deleted. |
| :param device: A Voltha.Device object. |
| :return: (Deferred) Shall be fired to acknowledge the deletion. |
| """ |
| |
| def get_device_details(device): |
| """ |
| This is called to get additional device details based on a NBI call. |
| :param device: A Voltha.Device object. |
| :return: (Deferred) Shall be fired to acknowledge the retrieval of |
| additional details. |
| """ |
| |
| def update_flows_bulk(device, flows, groups): |
| """ |
| Called after any flow table change, but only if the device supports |
| bulk mode, which is expressed by the 'accepts_bulk_flow_update' |
| capability attribute of the device type. |
| :param device: A Voltha.Device object. |
| :param flows: An openflow_v13.Flows object |
| :param groups: An openflow_v13.Flows object |
| :return: (Deferred or None) |
| """ |
| |
| def update_flows_incrementally(device, flow_changes, group_changes): |
| """ |
| [This mode is not supported yet.] |
| :param device: A Voltha.Device object. |
| :param flow_changes: |
| :param group_changes: |
| :return: |
| """ |
| |
| def update_pm_config(device, pm_configs): |
| """ |
| Called every time a request is made to change pm collection behavior |
| :param device: A Voltha.Device object |
| :param pm_collection_config: A Pms |
| """ |
| |
| def send_proxied_message(proxy_address, msg): |
| """ |
| Forward a msg to a child device of device, addressed by the given |
| proxy_address=Device.ProxyAddress(). |
| :param proxy_address: Address info for the parent device |
| to route the message to the child device. This was given to the |
| child device by the parent device at the creation of the child |
| device. |
| :param msg: (str) The actual message to send. |
| :return: (Deferred(None) or None) The return of this method should |
| indicate that the message was successfully *sent*. |
| """ |
| |
| def receive_proxied_message(proxy_address, msg): |
| """ |
| Pass an async message (arrived via a proxy) to this device. |
| :param proxy_address: Address info for the parent device |
| to route the message to the child device. This was given to the |
| child device by the parent device at the creation of the child |
| device. Note this is the proxy_address with which the adapter |
| had to register prior to receiving proxied messages. |
| :param msg: (str) The actual message received. |
| :return: None |
| """ |
| |
| def receive_packet_out(logical_device_id, egress_port_no, msg): |
| """ |
| Pass a packet_out message content to adapter so that it can forward it |
| out to the device. This is only called on root devices. |
| :param logical_device_id: |
| :param egress_port: egress logical port number |
| :param msg: actual message |
| :return: None |
| """ |
| |
| def receive_inter_adapter_message(msg): |
| """ |
| Called when the adapter recieves a message that was sent to it directly |
| from another adapter. An adapter may register for these messages by calling |
| the register_for_inter_adapter_messages() method in the adapter agent. |
| Note that it is the responsibility of the sending and receiving |
| adapters to properly encode and decode the message. |
| :param msg: The message contents. |
| :return: None |
| """ |
| |
| # TODO work in progress |
| # ... |
| |
| |
| class IAdapterAgent(Interface): |
| """ |
| This object is passed in to the __init__ function of each adapter, |
| and can be used by the adapter implementation to initiate async calls |
| toward Voltha's CORE via the APIs defined here. |
| """ |
| |
| def get_device(device_id): |
| # TODO add doc |
| """""" |
| |
| def add_device(device): |
| # TODO add doc |
| """""" |
| |
| def update_device(device): |
| # TODO add doc |
| """""" |
| |
| def add_port(device_id, port): |
| # TODO add doc |
| """""" |
| |
| def create_logical_device(logical_device): |
| # TODO add doc |
| """""" |
| |
| def add_logical_port(logical_device_id, port): |
| # TODO add doc |
| """""" |
| |
| def child_device_detected(parent_device_id, |
| parent_port_no, |
| child_device_type, |
| proxy_address, |
| **kw): |
| # TODO add doc |
| """""" |
| |
| def send_proxied_message(proxy_address, msg): |
| """ |
| Forward a msg to a child device of device, addressed by the given |
| proxy_address=Device.ProxyAddress(). |
| :param proxy_address: Address info for the parent device |
| to route the message to the child device. This was given to the |
| child device by the parent device at the creation of the child |
| device. |
| :param msg: (str) The actual message to send. |
| :return: (Deferred(None) or None) The return of this method should |
| indicate that the message was successfully *sent*. |
| """ |
| |
| def receive_proxied_message(proxy_address, msg): |
| """ |
| Pass an async message (arrived via a proxy) to this device. |
| :param proxy_address: Address info for the parent device |
| to route the message to the child device. This was given to the |
| child device by the parent device at the creation of the child |
| device. Note this is the proxy_address with which the adapter |
| had to register prior to receiving proxied messages. |
| :param msg: (str) The actual message received. |
| :return: None |
| """ |
| |
| def register_for_proxied_messages(proxy_address): |
| """ |
| A child device adapter can use this to indicate its intent to |
| receive async messages sent via a parent device. Example: an |
| ONU adapter can use this to register for OMCI messages received |
| via the OLT and the OLT adapter. |
| :param child_device_address: Address info that was given to the |
| child device by the parent device at the creation of the child |
| device. Its uniqueness acts as a router information for the |
| registration. |
| :return: None |
| """ |
| |
| def unregister_for_proxied_messages(proxy_address): |
| """ |
| Cancel a previous registration |
| :return: |
| """ |
| |
| def send_packet_in(logical_device_id, logical_port_no, packet): |
| """ |
| Forward given packet to the northbound toward an SDN controller. |
| :param device_id: logical device identifier |
| :param logical_port_no: logical port_no (as numbered in openflow) |
| :param packet: the actual packet; can be a serialized string or a scapy |
| Packet. |
| :return: None returned on success |
| """ |
| |
| def submit_kpis(kpi_event_msg): |
| """ |
| Submit KPI metrics on behalf of the OLT and its adapter. This can |
| include hardware related metrics, usage and utilization metrics, as |
| well as optional adapter specific metrics. |
| :param kpi_event_msg: A protobuf message of KpiEvent type. |
| :return: None |
| """ |
| |
| def submit_alarm(device_id, alarm_event_msg): |
| """ |
| Submit an alarm on behalf of the OLT and its adapter. |
| :param alarm_event_msg: A protobuf message of AlarmEvent type. |
| :return: None |
| """ |