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feat: add dag_stats rest api endpoint (apache#41017)
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# Licensed to the Apache Software Foundation (ASF) under one | ||
# or more contributor license agreements. See the NOTICE file | ||
# distributed with this work for additional information | ||
# regarding copyright ownership. The ASF licenses this file | ||
# to you 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 __future__ import annotations | ||
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from typing import TYPE_CHECKING | ||
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from flask import g | ||
from sqlalchemy import func, select | ||
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from airflow.api_connexion import security | ||
from airflow.api_connexion.schemas.dag_stats_schema import ( | ||
dag_stats_collection_schema, | ||
) | ||
from airflow.auth.managers.models.resource_details import DagAccessEntity | ||
from airflow.models.dag import DagRun | ||
from airflow.utils.session import NEW_SESSION, provide_session | ||
from airflow.utils.state import DagRunState | ||
from airflow.www.extensions.init_auth_manager import get_auth_manager | ||
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if TYPE_CHECKING: | ||
from sqlalchemy.orm import Session | ||
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from airflow.api_connexion.types import APIResponse | ||
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@security.requires_access_dag("GET", DagAccessEntity.RUN) | ||
@provide_session | ||
def get_dag_stats(*, dag_ids: str, session: Session = NEW_SESSION) -> APIResponse: | ||
"""Get Dag statistics.""" | ||
allowed_dag_ids = get_auth_manager().get_permitted_dag_ids(methods=["GET"], user=g.user) | ||
dags_list = set(dag_ids.split(",")) | ||
filter_dag_ids = dags_list.intersection(allowed_dag_ids) | ||
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query = ( | ||
select(DagRun.dag_id, DagRun.state, func.count(DagRun.state)) | ||
.group_by(DagRun.dag_id, DagRun.state) | ||
.where(DagRun.dag_id.in_(filter_dag_ids)) | ||
) | ||
dag_state_stats = session.execute(query) | ||
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dag_state_data = {(dag_id, state): count for dag_id, state, count in dag_state_stats} | ||
dag_stats = { | ||
dag_id: [{"state": state, "count": dag_state_data.get((dag_id, state), 0)} for state in DagRunState] | ||
for dag_id in filter_dag_ids | ||
} | ||
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dags = [{"dag_id": stat, "stats": dag_stats[stat]} for stat in dag_stats] | ||
return dag_stats_collection_schema.dump({"dags": dags, "total_entries": len(dag_stats)}) |
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# Licensed to the Apache Software Foundation (ASF) under one | ||
# or more contributor license agreements. See the NOTICE file | ||
# distributed with this work for additional information | ||
# regarding copyright ownership. The ASF licenses this file | ||
# to you 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 __future__ import annotations | ||
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from marshmallow import Schema, fields | ||
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from airflow.api_connexion.schemas.enum_schemas import DagStateField | ||
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class DagStatsStateSchema(Schema): | ||
"""DagStatsState Schema.""" | ||
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state = DagStateField(dump_only=True) | ||
count = fields.Int(dump_only=True) | ||
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class DagStatsSchema(Schema): | ||
"""DagStats Schema.""" | ||
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dag_id = fields.String(required=True) | ||
stats = fields.List(fields.Nested(DagStatsStateSchema)) | ||
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class DagStatsCollectionSchema(Schema): | ||
"""DagStassCollection Schema.""" | ||
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dags = fields.List(fields.Nested(DagStatsSchema)) | ||
total_entries = fields.Int() | ||
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dag_stats_state_schema = DagStatsStateSchema() | ||
dag_stats_schema = DagStatsSchema() | ||
dag_stats_collection_schema = DagStatsCollectionSchema() |
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