osm_common/dataclasses/temporal_dataclasses.py

#######################################################################################
# Copyright ETSI Contributors and Others.
#
# 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.
#######################################################################################

from dataclasses import dataclass
from enum import auto, IntEnum


#######################################################################################
# Defining States
class VimState(IntEnum):
    PROCESSING = auto()
    ENABLED = auto()
    ERROR = auto()


class VimOperationState(IntEnum):
    COMPLETED = auto()
    FAILED = auto()


class NsState(IntEnum):
    PROCESSING = auto()
    INSTANTIATED = auto()
    ERROR = auto()


class VnfLcmOperationState(IntEnum):
    PROCESSING = auto()
    COMPLETED = auto()
    FAILED = auto()


class VnfInstantiationState(IntEnum):
    NOT_INSTANTIATED = auto()
    INSTANTIATED = auto()


class VnfState(IntEnum):
    STOPPED = auto()
    STARTED = auto()


class LcmOperationState(IntEnum):
    PROCESSING = auto()
    COMPLETED = auto()
    FAILED = auto()


#######################################################################################
# Workflow Dataclasses


@dataclass
class VimOperationInput:
    """
    Input dataclass for workflows that perform operations
    (create, update, delete) on VIMs.

    Attributes:
    -----------
    vim_uuid : str
        The UUID of the VIM account as stored in the OSM vim
        collection in Mongo

    op_id: str
        The operation (task) id for this workflow.  This is used
        by the workflow at the end to update the status of the
        operation in Mongo vim collection.
    """

    vim_uuid: str
    op_id: str


@dataclass
class NsLcmOperationInput:
    """
    Input dataclass for workflows that run as LCM operations.

    Attributes:
    -----------

    nslcmop: dict
        A dictionary representing the nslcmop record from the
        database.
    """

    nslcmop: dict


@dataclass
class NsInstantiateInput:
    """
    Input dataclass for workflow that instantiate NS.

    Attributes:
    -----------
    ns_uuid : str
        The UUID of the NS as stored in the OSM nsr
        collection in Mongo

    op_id: str
        The operation (task) id for this workflow.  This is used
        by the workflow at the end to update the status of the
        operation in Mongo vim collection.
    """

    ns_uuid: str
    op_id: str


@dataclass
class CharmInfo:
    """
    Input dataclass for

    Attributes:
    -----------
    app_name : str

    channel: str

    entity_url: str
    """

    app_name: str
    channel: str
    entity_url: str


@dataclass
class VduInstantiateInput:
    """
    Input dataclass for workflow that instantiates a VDU.

    vim_uuid: str

    model_name: str

    charm_info : CharmInfo

    """

    vim_uuid: str
    model_name: str
    charm_info: CharmInfo


@dataclass
class VnfInstantiateInput:
    """
    Input dataclass for workflow that instantiates a VNF.

    Attributes:
    -----------
    vnfr_uuid : str
        The UUID of the VNF which is stored in the OSM vnfrs
        collection in Mongo.

    """

    vnfr_uuid: str


@dataclass
class PrepareVnfInput:
    """
    Input dataclass for workflow that prepares a VNF.

    Attributes:
    -----------
    vnfr_uuid : str
        The UUID of the VNF which is stored in the OSM vnfrs
        collection in Mongo.

    """

    vnfr_uuid: str


#######################################################################################
# Activity Dataclasses


@dataclass
class UpdateLcmOperationStateInput:
    """
    Input dataclass for updating LCM Operations in the Mongo nslcmops
    collection.  The following attributes will be updated automatically
      - statusEnteredTime
      - _admin.modified

    Attributes:
    -----------
    op_id: str
        The operation (task) id for this activity.  This is the key
        to the record in nslcmops collection that will be updated.

    op_state : LcmOperationState
        A representation of the state of the specified operation id,
        such as PROCESSING, COMPLETED, or FAILED.

    stage: str
        Human readable checkpoint message, intended only to give the
        user feedback.

    error_message: str
        Human readable error message if any failure occurred.

    detailed_status : str
        Human readable message providing additional details to the
        operation state, such as the error message explaining why
        the operation failed.
    """

    op_id: str
    op_state: LcmOperationState
    stage: str
    error_message: str
    detailed_status: str


@dataclass
class TestVimConnectivityInput:
    """
    Input dataclass for the Test Vim Connectivity Ativity

    Attributes:
    -----------
    vim_uuid : str
        The UUID of the VIM account as stored in the OSM vim
        collection in Mongo
    """

    vim_uuid: str


@dataclass
class UpdateVimStateInput:
    """
    Input dataclass for updating VIM state in the DB

    Attributes:
    -----------
    vim_uuid : str
        The UUID of the VIM account as stored in the OSM vim
        collection in Mongo

    operational_state : VimState
        A representation of the operational state (ENABLED or ERROR)
        of the VIM.

    message : str
        Human readable message providing additional details to the
        operational state, such as the error message associated
        with the ERROR operational_state.
    """

    vim_uuid: str
    operational_state: VimState
    message: str


@dataclass
class UpdateVimOperationStateInput:
    """
    Input dataclass for updating VIM Operations in the Mongo VIM
    collection.

    Attributes:
    -----------
    vim_uuid : str
        The UUID of the VIM account as stored in the OSM vim
        collection in Mongo

    op_id: str
        The operation (task) id for this workflow.  This is used
        to update the status of the operation in Mongo vim collection.

    op_state : VimOperationState
        A representation of the state of the specified operation id,
        such as COMPLETED, or FAILED.

    message : str
        Human readable message providing additional details to the
        operation state, such as the error message explaining why
        the operation failed.
    """

    vim_uuid: str
    op_id: str
    op_state: VimOperationState
    message: str


@dataclass
class DeleteVimInput:
    """
    Input dataclass for deleting vim record from the database

    Attributes:
    -----------
    vim_uuid : str
        The UUID of the VIM account as stored in the OSM vim
        collection in Mongo

    """

    vim_uuid: str


@dataclass
class DeployNsInput:
    """
    Input dataclass for

    Attributes:
    -----------
    ns_uuid : str
        The UUID of the NS as stored in the OSM nsr
        collection in Mongo
    """

    ns_uuid: str


@dataclass
class UpdateNsStateInput:
    """
    Input dataclass for updating NS state in the DB

    Attributes:
    -----------
    ns_uuid : str
        The UUID of the NS as stored in the OSM ns
        collection in Mongo

    operational_state : NsState
        A representation of the operational state (ENABLED or ERROR)
        of the NS.

    message : str
        Human readable message providing additional details to the
        operational state, such as the error message associated
        with the ERROR operational_state.
    """

    ns_uuid: str
    state: NsState
    message: str


@dataclass
class ModelInfo:
    """
    Contains the information related to a model.

    Attributes:
    -----------
    vim_uuid : str
        The UUID of the VIM as stored in the OSM vim_accounts
        collection in Mongo.

    model_name : str
        Name of the Juju model used to deploy charms.
    """

    vim_uuid: str
    model_name: str


@dataclass
class CheckCharmStatusInput:
    """
    Input dataclass for checking on a specific charm's deployment
    status

    Attributes:
    -----------
    vim_uuid : str
        The UUID of the VIM as stored in the OSM vim_accounts
        collection in Mongo.

    model_name : str
        Name of the model to create in Juju.

    application_name : str
        Name of the application that the state is going to be
        awaited.

    poll_interval : int (optional)
        Time, in seconds, to wait between status checks.
    """

    vim_uuid: str
    model_name: str
    application_name: str
    poll_interval: int = 1


@dataclass
class ChangeVnfStateInput:
    """
    Input dataclass for changing VNF State.

    Attributes:
    -----------
    vnfr_uuid : str
        The UUID of the VNF which is stored in the OSM vnfrs
        collection in Mongo.

    state : VnfState
        A representation of the VNF state (STOPPED or STARTED).
    """

    vnfr_uuid: str
    state: VnfState


@dataclass
class ChangeVnfInstantiationStateInput:
    """
    Input dataclass for changing VNF Instantiation State.

    Attributes:
    -----------
    vnfr_uuid : str
        The UUID of the VNF which is stored in the OSM vnfrs
        collection in Mongo.

    state : VnfInstantiationState
        A representation of the VNF instantiation state (NOT_INSTANTIATED or INSTANTIATED).

    """

    vnfr_uuid: str
    state: VnfInstantiationState


@dataclass
class GetTaskQueueInput:
    """
    Input dataclass for get task queue activity.

    Attributes:
    -----------
    vnfr_uuid : str
        The UUID of the VNF which is stored in the OSM vnfrs
        collection in Mongo.

    """

    vnfr_uuid: str


@dataclass
class GetTaskQueueOutput:
    """
    Output dataclass for get task queue activity.

    Attributes:
    -----------
    task_queue : str
        Name of the queue which is used to Deploy VNF.
    """

    task_queue: str


@dataclass
class GetVnfDetailsInput:
    """
    Input dataclass for get vnf details activity.

    Attributes:
    -----------
    vnfr_uuid : str
        The UUID of the VNF which is stored in the OSM vnfrs
        collection in Mongo.
    """

    vnfr_uuid: str


@dataclass
class GetVnfDetailsOutput:
    """
    Output dataclass for get vnf details activity.

    Attributes:
    -----------
    vnfr : dict
        VNF record retrieved from Database.

    vnfd : dict
        VNF descriptor retrieved from Database.
    """

    vnfr: dict
    vnfd: dict