support_change_priority.py

#!/usr/bin/env python3

# Copyright 2023 Google LLC

# 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 os
import slack
import logging
from datetime import datetime
from get_parent import get_parent
from case_not_found import case_not_found
from support_service import support_service
from verify_priorities import verify_priorities

logger = logging.getLogger(__name__)


def support_change_priority(channel_id, case, priority, user_id):
    """
    Changes the priority of a Google Cloud Support case.

    Parameters
    ----------
    channel_id : str
      unique string used to idenify a Slack channel. Used to send messages to
      the channel
    case : str
      unique id of the case
    priority : str
      the current priority of the case, represented as S0, S1, S2, S3, or S4
    user_id : str
      the Slack user_id of the user who submitted the request. Used to send
      ephemeral messages to the user
    """
    MAX_RETRIES = 3

    service = support_service()

    client = slack.WebClient(token=os.environ.get("SLACK_TOKEN"))
    client.chat_postEphemeral(channel=channel_id,
                              user=user_id,
                              text="Your request is processing ...")
    parent = get_parent(case)
    priority_list = [priority]
    valid_priority = verify_priorities(channel_id, priority_list, user_id)
    if valid_priority is False:
        pass
    elif parent == "Case not found":
        case_not_found(channel_id, user_id, case)
    else:
        body = {"severity": priority.replace("P", "S")}
        update_mask = "severity"
        req = service.cases().patch(name=parent,
                                    updateMask=update_mask,
                                    body=body)
        try:
            req.execute(num_retries=MAX_RETRIES)
        except BrokenPipeError as e:
            error_message = f"{e} : {datetime.now()}"
            logger.error(error_message)
            client.chat_postEphemeral(
                channel=channel_id,
                user=user_id,
                text=("Your attempt to change the case priority has failed."
                      " Please try again later.")
            )
        else:
            client.chat_postEphemeral(
                channel=channel_id,
                user=user_id,
                text=(f"You have changed the priority of case {case} to"
                      f" {priority}")
            )


if __name__ == "__main__":
    test_channel_id = os.environ.get("TEST_CHANNEL_ID")
    test_case = os.environ.get("TEST_CASE")
    test_priority = "P3"
    test_user_id = os.environ.get("TEST_USER_ID")
    support_change_priority(test_channel_id, test_case, test_priority,
                            test_user_id)