83a0e27d59
Story: 2002174 Task: 26342 Change-Id: Id8c141ea46d3e4ee7a35c99a04f1e40583f6e3dc
149 lines
5.0 KiB
Python
149 lines
5.0 KiB
Python
# Copyright 2017 Catalyst IT Limited
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from oslo_log import log as logging
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from oslo_serialization import jsonutils
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from qinling.db import api as db_api
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from qinling.db.sqlalchemy import models
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from qinling import exceptions as exc
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from qinling import status
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from qinling.utils import constants
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LOG = logging.getLogger(__name__)
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def _update_function_db(function_id, pre_count):
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# Function update is done using UPDATE ... FROM ... WHERE
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# non-locking clause.
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while True:
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modified = db_api.conditional_update(
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models.Function,
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{
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'count': pre_count + 1,
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},
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{
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'id': function_id,
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'count': pre_count
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},
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insecure=True,
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)
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if not modified:
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LOG.warning("Retrying to update function count.")
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pre_count += 1
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continue
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else:
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break
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def _update_function_version_db(version_id, pre_count):
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# Update is done using UPDATE ... FROM ... WHERE non-locking clause.
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while True:
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modified = db_api.conditional_update(
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models.FunctionVersion,
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{
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'count': pre_count + 1,
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},
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{
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'id': version_id,
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'count': pre_count
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},
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insecure=True,
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)
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if not modified:
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LOG.warning("Retrying to update function version count.")
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pre_count += 1
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continue
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else:
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break
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def create_execution(engine_client, params):
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function_alias = params.get('function_alias')
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function_id = params.get('function_id')
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version = params.get('function_version', 0)
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is_sync = params.get('sync', True)
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input = params.get('input')
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if function_alias:
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alias_db = db_api.get_function_alias(function_alias)
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function_id = alias_db.function_id
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version = alias_db.function_version
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params.update({'function_id': function_id,
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'version': version})
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func_db = db_api.get_function(function_id)
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runtime_id = func_db.runtime_id
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# Image type function does not need runtime
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if runtime_id:
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runtime_db = db_api.get_runtime(runtime_id)
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if runtime_db and runtime_db.status != status.AVAILABLE:
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raise exc.RuntimeNotAvailableException(
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'Runtime %s is not available.' % func_db.runtime_id
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)
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if version > 0:
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if func_db.code['source'] != constants.PACKAGE_FUNCTION:
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raise exc.InputException(
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"Can not specify version for %s type function." %
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constants.PACKAGE_FUNCTION
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)
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# update version count
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version_db = db_api.get_function_version(function_id, version)
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pre_version_count = version_db.count
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_update_function_version_db(version_db.id, pre_version_count)
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else:
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pre_count = func_db.count
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_update_function_db(function_id, pre_count)
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# input in params should be a string.
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if input:
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try:
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function_input = jsonutils.loads(input)
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# If input is e.g. '6', result of jsonutils.loads is 6 which can
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# not be stored in db.
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if type(function_input) == int:
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raise ValueError
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params['input'] = function_input
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except ValueError:
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params['input'] = {'__function_input': input}
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params.update({'status': status.RUNNING})
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db_model = db_api.create_execution(params)
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try:
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engine_client.create_execution(
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db_model.id, function_id, version, runtime_id,
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input=params.get('input'), is_sync=is_sync
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)
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except exc.QinlingException:
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# Catch RPC errors for executions:
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# - for RemoteError in an RPC call, the execution status would be
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# handled in the engine side;
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# - for other exceptions in an RPC call or cast, the execution status
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# would remain RUNNING so we should update it.
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db_model = db_api.get_execution(db_model.id)
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if db_model.status == status.RUNNING:
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db_model = db_api.update_execution(db_model.id,
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{'status': status.ERROR})
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return db_model
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if is_sync:
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# The execution should already be updated by engine service for sync
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# execution.
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db_model = db_api.get_execution(db_model.id)
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return db_model
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