osm_lcm/temporal/lcm_activities.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.
import logging
from temporalio import activity
import time
from osm_common.dataclasses.temporal_dataclasses import (
    NsLcmOperationInput,
    UpdateLcmOperationStateInput,
)
from osm_common.temporal_constants import (
    ACTIVITY_UPDATE_LCM_OPERATION_STATE,
    ACTIVITY_NSLCM_NO_OP,
)


class NsLcmActivity:
    """
    Handles NS Lifecycle Managment operations.
    Args:
        db  (object):       Data Access Object
    """

    def __init__(self, db):
        self.db = db
        self.logger = logging.getLogger(f"lcm.act.{self.__class__.__name__}")

    @activity.defn(name=ACTIVITY_NSLCM_NO_OP)
    async def no_op(self, input: NsLcmOperationInput) -> None:
        """
        This is a simple No Operation Activity that simply logs the data
        with which it was called.  It can be used as a placeholder when
        developing workflows, or can be enhanced with logic to throw
        exceptions on specific conditions to test exception handling in
        a workflow.
        """
        self.logger.debug(f"Called with: {input.nslcmop}")

    @activity.defn(name=ACTIVITY_UPDATE_LCM_OPERATION_STATE)
    async def update_ns_lcm_operation_state(
        self, data: UpdateLcmOperationStateInput
    ) -> None:
        """
        Changes the state of a LCM operation task.  Should be done to
        indicate progress, or completion of the task itself.

        Collaborators:
            DB Write:           nslcmops

        Raises  (Retryable):
            DbException         If the target DB record does not exist or DB is not reachable.

        Activity Lifecycle:
            This activity will not report a heartbeat due to its
            short-running nature.
            As this is a direct DB update, it is not recommended to have
            any specific retry policy
        """
        now = time.time()

        update_lcm_operation = {
            "_admin.modified": now,
        }

        if data.op_state is not None:
            update_lcm_operation["operationState"] = data.op_state.name
            update_lcm_operation["statusEnteredTime"] = now

        if data.stage is not None:
            update_lcm_operation["stage"] = data.stage

        if data.error_message is not None:
            update_lcm_operation["errorMessage"] = data.error_message

        if data.detailed_status is not None:
            update_lcm_operation["detailedStatus"] = data.detailed_status

        self.db.set_one("nslcmops", {"_id": data.op_id}, update_lcm_operation)
        self.logger.debug(
            f"Updated LCM Operation {data.op_id} to {update_lcm_operation}"
        )