Source code for oaebu_workflows.airflow_pools
# Copyright 2020 Curtin University
#
# 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.
# Author: Keegan Smith
from airflow.api.common.experimental.pool import create_pool, get_pool
from airflow.exceptions import PoolNotFound
[docs]class AirflowPool:
def __init__(self, pool_name: str, pool_slots: int, pool_description: str):
"""Constructor an AirflowPool instance
:param pool_name: The name of this pool
:param pool_slots: The number of slots assigned to this pool
:param pool_description: A description of this pool
"""
self.pool_name = pool_name
self.pool_slots = pool_slots
self.pool_description = pool_description
[docs] def get_pool(self):
return get_pool(self.pool_name)
[docs] def create_pool(self):
return create_pool(self.pool_name, self.pool_slots, self.pool_description)
[docs] def create_or_get_pool(self):
try:
return self.get_pool()
except PoolNotFound:
return self.create_pool()
[docs]class CrossrefEventsPool(AirflowPool):
def __init__(self, pool_slots: int = 15):
"""Constructor CrossrefEventsPool instance
:param pool_slots: The number of slots assigned to this pool
"""
super().__init__(
pool_name="Crossref Events Pool", pool_slots=pool_slots, pool_description="Crossref Events API Pool"
)