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test_dag.py
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3495 lines (3022 loc) · 135 KB
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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
import datetime
import itertools
import logging
import os
import pickle
import re
from datetime import timedelta
from pathlib import Path
from typing import TYPE_CHECKING
from unittest import mock
from unittest.mock import patch
import jinja2
import pendulum
import pytest
import time_machine
from sqlalchemy import inspect, select
from airflow import settings
from airflow.configuration import conf
from airflow.decorators import setup, task as task_decorator, teardown
from airflow.exceptions import (
AirflowException,
ParamValidationError,
UnknownExecutorException,
)
from airflow.models import DagBag
from airflow.models.asset import (
AssetActive,
AssetAliasModel,
AssetDagRunQueue,
AssetEvent,
AssetModel,
TaskOutletAssetReference,
)
from airflow.models.baseoperator import BaseOperator
from airflow.models.dag import (
DAG,
DagModel,
DagOwnerAttributes,
DagTag,
ExecutorLoader,
get_asset_triggered_next_run_info,
)
from airflow.models.dag_version import DagVersion
from airflow.models.dagrun import DagRun
from airflow.models.serialized_dag import SerializedDagModel
from airflow.models.taskinstance import TaskInstance as TI
from airflow.providers.standard.operators.bash import BashOperator
from airflow.providers.standard.operators.empty import EmptyOperator
from airflow.providers.standard.operators.python import PythonOperator
from airflow.sdk import TaskGroup
from airflow.sdk.definitions._internal.contextmanager import TaskGroupContext
from airflow.sdk.definitions._internal.templater import NativeEnvironment, SandboxedEnvironment
from airflow.sdk.definitions.asset import Asset, AssetAlias, AssetAll, AssetAny
from airflow.sdk.definitions.param import Param
from airflow.security import permissions
from airflow.timetables.base import DagRunInfo, DataInterval, TimeRestriction, Timetable
from airflow.timetables.simple import (
AssetTriggeredTimetable,
NullTimetable,
OnceTimetable,
)
from airflow.utils import timezone
from airflow.utils.file import list_py_file_paths
from airflow.utils.session import create_session
from airflow.utils.state import DagRunState, State, TaskInstanceState
from airflow.utils.timezone import datetime as datetime_tz
from airflow.utils.trigger_rule import TriggerRule
from airflow.utils.types import DagRunTriggeredByType, DagRunType
from airflow.utils.weight_rule import WeightRule
from tests.models import DEFAULT_DATE
from tests.plugins.priority_weight_strategy import (
FactorPriorityWeightStrategy,
StaticTestPriorityWeightStrategy,
TestPriorityWeightStrategyPlugin,
)
from tests_common.test_utils.asserts import assert_queries_count
from tests_common.test_utils.db import (
clear_db_assets,
clear_db_dags,
clear_db_runs,
clear_db_serialized_dags,
)
from tests_common.test_utils.mapping import expand_mapped_task
from tests_common.test_utils.mock_plugins import mock_plugin_manager
from tests_common.test_utils.timetables import cron_timetable, delta_timetable
if TYPE_CHECKING:
from sqlalchemy.orm import Session
pytestmark = pytest.mark.db_test
TEST_DATE = datetime_tz(2015, 1, 2, 0, 0)
repo_root = Path(__file__).parents[2]
@pytest.fixture
def clear_dags():
clear_db_dags()
clear_db_serialized_dags()
yield
clear_db_dags()
clear_db_serialized_dags()
@pytest.fixture
def clear_assets():
clear_db_assets()
yield
clear_db_assets()
TEST_DAGS_FOLDER = Path(__file__).parent.parent / "dags"
@pytest.fixture
def test_dags_bundle(configure_testing_dag_bundle):
with configure_testing_dag_bundle(TEST_DAGS_FOLDER):
yield
def _create_dagrun(
dag: DAG,
*,
logical_date: datetime.datetime,
data_interval: tuple[datetime.datetime, datetime.datetime],
run_type: DagRunType,
state: DagRunState = DagRunState.RUNNING,
start_date: datetime.datetime | None = None,
**kwargs,
) -> DagRun:
logical_date = timezone.coerce_datetime(logical_date)
if not isinstance(data_interval, DataInterval):
data_interval = DataInterval(*map(timezone.coerce_datetime, data_interval))
run_id = dag.timetable.generate_run_id(
run_type=run_type,
run_after=logical_date or data_interval.end, # type: ignore
data_interval=data_interval,
)
return dag.create_dagrun(
run_id=run_id,
logical_date=logical_date,
data_interval=data_interval,
run_after=data_interval.end,
run_type=run_type,
state=state,
start_date=start_date,
triggered_by=DagRunTriggeredByType.TEST,
**kwargs,
)
class TestDag:
def setup_method(self) -> None:
clear_db_runs()
clear_db_dags()
clear_db_assets()
def teardown_method(self) -> None:
clear_db_runs()
clear_db_dags()
clear_db_assets()
@staticmethod
def _clean_up(dag_id: str):
with create_session() as session:
session.query(DagRun).filter(DagRun.dag_id == dag_id).delete(synchronize_session=False)
session.query(TI).filter(TI.dag_id == dag_id).delete(synchronize_session=False)
@staticmethod
def _occur_before(a, b, list_):
"""
Assert that a occurs before b in the list.
"""
a_index = -1
b_index = -1
for i, e in enumerate(list_):
if e.task_id == a:
a_index = i
if e.task_id == b:
b_index = i
return 0 <= a_index < b_index
def test_dag_naive_default_args_start_date(self):
dag = DAG("DAG", schedule=None, default_args={"start_date": datetime.datetime(2018, 1, 1)})
assert dag.timezone == settings.TIMEZONE
dag = DAG("DAG", schedule=None, start_date=datetime.datetime(2018, 1, 1))
assert dag.timezone == settings.TIMEZONE
def test_dag_none_default_args_start_date(self):
"""
Tests if a start_date of None in default_args
works.
"""
dag = DAG("DAG", schedule=None, default_args={"start_date": None})
assert dag.timezone == settings.TIMEZONE
def test_dag_task_priority_weight_total(self):
width = 5
depth = 5
weight = 5
pattern = re.compile("stage(\\d*).(\\d*)")
# Fully connected parallel tasks. i.e. every task at each parallel
# stage is dependent on every task in the previous stage.
# Default weight should be calculated using downstream descendants
with DAG("dag", schedule=None, start_date=DEFAULT_DATE, default_args={"owner": "owner1"}) as dag:
pipeline = [
[EmptyOperator(task_id=f"stage{i}.{j}", priority_weight=weight) for j in range(width)]
for i in range(depth)
]
for upstream, downstream in zip(pipeline, pipeline[1:]):
for up_task, down_task in itertools.product(upstream, downstream):
down_task.set_upstream(up_task)
for task in dag.task_dict.values():
match = pattern.match(task.task_id)
task_depth = int(match.group(1))
# the sum of each stages after this task + itself
correct_weight = ((depth - (task_depth + 1)) * width + 1) * weight
calculated_weight = task.priority_weight_total
assert calculated_weight == correct_weight
def test_dag_task_priority_weight_total_using_upstream(self):
# Same test as above except use 'upstream' for weight calculation
weight = 3
width = 5
depth = 5
pattern = re.compile("stage(\\d*).(\\d*)")
with DAG("dag", schedule=None, start_date=DEFAULT_DATE, default_args={"owner": "owner1"}) as dag:
pipeline = [
[
EmptyOperator(
task_id=f"stage{i}.{j}",
priority_weight=weight,
weight_rule=WeightRule.UPSTREAM,
)
for j in range(width)
]
for i in range(depth)
]
for upstream, downstream in zip(pipeline, pipeline[1:]):
for up_task, down_task in itertools.product(upstream, downstream):
down_task.set_upstream(up_task)
for task in dag.task_dict.values():
match = pattern.match(task.task_id)
task_depth = int(match.group(1))
# the sum of each stages after this task + itself
correct_weight = (task_depth * width + 1) * weight
calculated_weight = task.priority_weight_total
assert calculated_weight == correct_weight
def test_dag_task_priority_weight_total_using_absolute(self):
# Same test as above except use 'absolute' for weight calculation
weight = 10
width = 5
depth = 5
with DAG("dag", schedule=None, start_date=DEFAULT_DATE, default_args={"owner": "owner1"}) as dag:
pipeline = [
[
EmptyOperator(
task_id=f"stage{i}.{j}",
priority_weight=weight,
weight_rule=WeightRule.ABSOLUTE,
)
for j in range(width)
]
for i in range(depth)
]
for upstream, downstream in zip(pipeline, pipeline[1:]):
for up_task, down_task in itertools.product(upstream, downstream):
down_task.set_upstream(up_task)
for task in dag.task_dict.values():
# the sum of each stages after this task + itself
correct_weight = weight
calculated_weight = task.priority_weight_total
assert calculated_weight == correct_weight
@pytest.mark.parametrize(
"cls, expected",
[
(StaticTestPriorityWeightStrategy, 99),
(FactorPriorityWeightStrategy, 3),
],
)
def test_dag_task_custom_weight_strategy(self, cls, expected):
with (
mock_plugin_manager(plugins=[TestPriorityWeightStrategyPlugin]),
DAG("dag", schedule=None, start_date=DEFAULT_DATE, default_args={"owner": "owner1"}) as dag,
):
task = EmptyOperator(
task_id="empty_task",
weight_rule=cls(),
)
dr = _create_dagrun(
dag,
logical_date=DEFAULT_DATE,
data_interval=(DEFAULT_DATE, DEFAULT_DATE),
run_type=DagRunType.MANUAL,
)
ti = dr.get_task_instance(task.task_id)
assert ti.priority_weight == expected
def test_get_num_task_instances(self):
test_dag_id = "test_get_num_task_instances_dag"
test_task_id = "task_1"
test_dag = DAG(dag_id=test_dag_id, schedule=None, start_date=DEFAULT_DATE)
test_task = EmptyOperator(task_id=test_task_id, dag=test_dag)
dr1 = _create_dagrun(
test_dag,
run_type=DagRunType.MANUAL,
logical_date=DEFAULT_DATE,
data_interval=(DEFAULT_DATE, DEFAULT_DATE),
)
dr2 = _create_dagrun(
test_dag,
run_type=DagRunType.MANUAL,
logical_date=DEFAULT_DATE + datetime.timedelta(days=1),
data_interval=(
DEFAULT_DATE + datetime.timedelta(days=1),
DEFAULT_DATE + datetime.timedelta(days=1),
),
)
dr3 = _create_dagrun(
test_dag,
run_type=DagRunType.MANUAL,
logical_date=DEFAULT_DATE + datetime.timedelta(days=2),
data_interval=(
DEFAULT_DATE + datetime.timedelta(days=2),
DEFAULT_DATE + datetime.timedelta(days=2),
),
)
dr4 = _create_dagrun(
test_dag,
run_type=DagRunType.MANUAL,
logical_date=DEFAULT_DATE + datetime.timedelta(days=3),
data_interval=(
DEFAULT_DATE + datetime.timedelta(days=2),
DEFAULT_DATE + datetime.timedelta(days=2),
),
)
ti1 = TI(task=test_task, run_id=dr1.run_id)
ti1.refresh_from_db()
ti1.state = None
ti2 = TI(task=test_task, run_id=dr2.run_id)
ti2.refresh_from_db()
ti2.state = State.RUNNING
ti3 = TI(task=test_task, run_id=dr3.run_id)
ti3.refresh_from_db()
ti3.state = State.QUEUED
ti4 = TI(task=test_task, run_id=dr4.run_id)
ti4.refresh_from_db()
ti4.state = State.RUNNING
session = settings.Session()
session.merge(ti1)
session.merge(ti2)
session.merge(ti3)
session.merge(ti4)
session.commit()
assert DAG.get_num_task_instances(test_dag_id, task_ids=["fakename"], session=session) == 0
assert DAG.get_num_task_instances(test_dag_id, task_ids=[test_task_id], session=session) == 4
assert (
DAG.get_num_task_instances(test_dag_id, task_ids=["fakename", test_task_id], session=session) == 4
)
assert (
DAG.get_num_task_instances(test_dag_id, task_ids=[test_task_id], states=[None], session=session)
== 1
)
assert (
DAG.get_num_task_instances(
test_dag_id, task_ids=[test_task_id], states=[State.RUNNING], session=session
)
== 2
)
assert (
DAG.get_num_task_instances(
test_dag_id, task_ids=[test_task_id], states=[None, State.RUNNING], session=session
)
== 3
)
assert (
DAG.get_num_task_instances(
test_dag_id,
task_ids=[test_task_id],
states=[None, State.QUEUED, State.RUNNING],
session=session,
)
== 4
)
session.close()
def test_get_task_instances_before(self):
BASE_DATE = timezone.datetime(2022, 7, 20, 20)
test_dag_id = "test_get_task_instances_before"
test_task_id = "the_task"
test_dag = DAG(dag_id=test_dag_id, schedule=None, start_date=BASE_DATE)
EmptyOperator(task_id=test_task_id, dag=test_dag)
session = settings.Session()
def dag_run_before(delta_h=0, type=DagRunType.SCHEDULED):
dagrun = test_dag.create_dagrun(
state=State.SUCCESS,
run_type=type,
run_id=f"test_{delta_h}",
logical_date=None,
data_interval=None,
run_after=None,
session=session,
triggered_by=DagRunTriggeredByType.TEST,
)
dagrun.start_date = dagrun.run_after = dagrun.logical_date = BASE_DATE + timedelta(hours=delta_h)
return dagrun
dr1 = dag_run_before(delta_h=-1, type=DagRunType.MANUAL) # H19
dr2 = dag_run_before(delta_h=-2, type=DagRunType.MANUAL) # H18
dr3 = dag_run_before(delta_h=-3, type=DagRunType.MANUAL) # H17
dr4 = dag_run_before(delta_h=-4, type=DagRunType.MANUAL) # H16
dr5 = dag_run_before(delta_h=-5) # H15
dr6 = dag_run_before(delta_h=-6) # H14
dr7 = dag_run_before(delta_h=-7) # H13
dr8 = dag_run_before(delta_h=-8) # H12
session.commit()
REF_DATE = BASE_DATE
assert set([dr.run_id for dr in [dr1]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=1, session=session)
]
)
assert set([dr.run_id for dr in [dr1, dr2, dr3]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=3, session=session)
]
)
assert set([dr.run_id for dr in [dr1, dr2, dr3, dr4, dr5]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=5, session=session)
]
)
assert set([dr.run_id for dr in [dr1, dr2, dr3, dr4, dr5, dr6, dr7]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=7, session=session)
]
)
assert set([dr.run_id for dr in [dr1, dr2, dr3, dr4, dr5, dr6, dr7, dr8]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=9, session=session)
]
)
assert set([dr.run_id for dr in [dr1, dr2, dr3, dr4, dr5, dr6, dr7, dr8]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=10, session=session)
]
) # stays constrained to available ones
REF_DATE = BASE_DATE + timedelta(hours=-3.5)
assert set([dr.run_id for dr in [dr4]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=1, session=session)
]
)
assert set([dr.run_id for dr in [dr4, dr5, dr6]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=3, session=session)
]
)
assert set([dr.run_id for dr in [dr4, dr5, dr6, dr7, dr8]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=5, session=session)
]
)
assert set([dr.run_id for dr in [dr4, dr5, dr6, dr7, dr8]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=6, session=session)
]
) # stays constrained to available ones
REF_DATE = BASE_DATE + timedelta(hours=-8)
assert set([dr.run_id for dr in [dr8]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=0, session=session)
]
)
assert set([dr.run_id for dr in [dr8]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=1, session=session)
]
)
assert set([dr.run_id for dr in [dr8]]) == set(
[
ti.run_id
for ti in test_dag.get_task_instances_before(base_date=REF_DATE, num=10, session=session)
]
)
session.close()
def test_user_defined_filters_macros(self):
def jinja_udf(name):
return f"Hello {name}"
dag = DAG(
"test-dag",
schedule=None,
start_date=DEFAULT_DATE,
user_defined_filters={"hello": jinja_udf},
user_defined_macros={"foo": "bar"},
)
jinja_env = dag.get_template_env()
assert "hello" in jinja_env.filters
assert jinja_env.filters["hello"] == jinja_udf
assert jinja_env.globals["foo"] == "bar"
def test_set_jinja_env_additional_option(self):
dag = DAG(
dag_id="test-dag",
schedule=None,
jinja_environment_kwargs={"keep_trailing_newline": True, "cache_size": 50},
)
jinja_env = dag.get_template_env()
assert jinja_env.keep_trailing_newline is True
assert jinja_env.cache.capacity == 50
assert jinja_env.undefined is jinja2.StrictUndefined
def test_template_undefined(self):
dag = DAG("test-dag", schedule=None, template_undefined=jinja2.Undefined)
jinja_env = dag.get_template_env()
assert jinja_env.undefined is jinja2.Undefined
@pytest.mark.parametrize(
"use_native_obj, force_sandboxed, expected_env",
[
(False, True, SandboxedEnvironment),
(False, False, SandboxedEnvironment),
(True, False, NativeEnvironment),
(True, True, SandboxedEnvironment),
],
)
def test_template_env(self, use_native_obj, force_sandboxed, expected_env):
dag = DAG("test-dag", schedule=None, render_template_as_native_obj=use_native_obj)
jinja_env = dag.get_template_env(force_sandboxed=force_sandboxed)
assert isinstance(jinja_env, expected_env)
def test_resolve_template_files_value(self, tmp_path):
path = tmp_path / "testfile.template"
path.write_text("{{ ds }}")
with DAG(
dag_id="test-dag",
schedule=None,
start_date=DEFAULT_DATE,
template_searchpath=os.fspath(path.parent),
):
task = EmptyOperator(task_id="op1")
task.test_field = path.name
task.template_fields = ("test_field",)
task.template_ext = (".template",)
task.resolve_template_files()
assert task.test_field == "{{ ds }}"
def test_resolve_template_files_list(self, tmp_path):
path = tmp_path / "testfile.template"
path.write_text("{{ ds }}")
with DAG(
dag_id="test-dag",
schedule=None,
start_date=DEFAULT_DATE,
template_searchpath=os.fspath(path.parent),
):
task = EmptyOperator(task_id="op1")
task.test_field = [path.name, "some_string"]
task.template_fields = ("test_field",)
task.template_ext = (".template",)
task.resolve_template_files()
assert task.test_field == ["{{ ds }}", "some_string"]
def test_create_dagrun_when_schedule_is_none_and_empty_start_date(self):
# Check that we don't get an AttributeError 'start_date' for self.start_date when schedule is none
dag = DAG("dag_with_none_schedule_and_empty_start_date", schedule=None)
dag.add_task(BaseOperator(task_id="task_without_start_date"))
dagrun = dag.create_dagrun(
run_id="test",
state=State.RUNNING,
run_type=DagRunType.MANUAL,
logical_date=DEFAULT_DATE,
data_interval=(DEFAULT_DATE, DEFAULT_DATE),
run_after=DEFAULT_DATE,
triggered_by=DagRunTriggeredByType.TEST,
)
assert dagrun is not None
def test_dagtag_repr(self):
clear_db_dags()
dag = DAG("dag-test-dagtag", schedule=None, start_date=DEFAULT_DATE, tags=["tag-1", "tag-2"])
dag.sync_to_db()
with create_session() as session:
assert {"tag-1", "tag-2"} == {
repr(t) for t in session.query(DagTag).filter(DagTag.dag_id == "dag-test-dagtag").all()
}
def test_bulk_write_to_db(self, testing_dag_bundle):
clear_db_dags()
dags = [
DAG(f"dag-bulk-sync-{i}", schedule=None, start_date=DEFAULT_DATE, tags=["test-dag"])
for i in range(4)
]
with assert_queries_count(6):
DAG.bulk_write_to_db("testing", None, dags)
with create_session() as session:
assert {"dag-bulk-sync-0", "dag-bulk-sync-1", "dag-bulk-sync-2", "dag-bulk-sync-3"} == {
row[0] for row in session.query(DagModel.dag_id).all()
}
assert {
("dag-bulk-sync-0", "test-dag"),
("dag-bulk-sync-1", "test-dag"),
("dag-bulk-sync-2", "test-dag"),
("dag-bulk-sync-3", "test-dag"),
} == set(session.query(DagTag.dag_id, DagTag.name).all())
for row in session.query(DagModel.last_parsed_time).all():
assert row[0] is not None
# Re-sync should do fewer queries
with assert_queries_count(9):
DAG.bulk_write_to_db("testing", None, dags)
with assert_queries_count(9):
DAG.bulk_write_to_db("testing", None, dags)
# Adding tags
for dag in dags:
dag.tags.add("test-dag2")
with assert_queries_count(10):
DAG.bulk_write_to_db("testing", None, dags)
with create_session() as session:
assert {"dag-bulk-sync-0", "dag-bulk-sync-1", "dag-bulk-sync-2", "dag-bulk-sync-3"} == {
row[0] for row in session.query(DagModel.dag_id).all()
}
assert {
("dag-bulk-sync-0", "test-dag"),
("dag-bulk-sync-0", "test-dag2"),
("dag-bulk-sync-1", "test-dag"),
("dag-bulk-sync-1", "test-dag2"),
("dag-bulk-sync-2", "test-dag"),
("dag-bulk-sync-2", "test-dag2"),
("dag-bulk-sync-3", "test-dag"),
("dag-bulk-sync-3", "test-dag2"),
} == set(session.query(DagTag.dag_id, DagTag.name).all())
# Removing tags
for dag in dags:
dag.tags.remove("test-dag")
with assert_queries_count(10):
DAG.bulk_write_to_db("testing", None, dags)
with create_session() as session:
assert {"dag-bulk-sync-0", "dag-bulk-sync-1", "dag-bulk-sync-2", "dag-bulk-sync-3"} == {
row[0] for row in session.query(DagModel.dag_id).all()
}
assert {
("dag-bulk-sync-0", "test-dag2"),
("dag-bulk-sync-1", "test-dag2"),
("dag-bulk-sync-2", "test-dag2"),
("dag-bulk-sync-3", "test-dag2"),
} == set(session.query(DagTag.dag_id, DagTag.name).all())
for row in session.query(DagModel.last_parsed_time).all():
assert row[0] is not None
# Removing all tags
for dag in dags:
dag.tags = set()
with assert_queries_count(10):
DAG.bulk_write_to_db("testing", None, dags)
with create_session() as session:
assert {"dag-bulk-sync-0", "dag-bulk-sync-1", "dag-bulk-sync-2", "dag-bulk-sync-3"} == {
row[0] for row in session.query(DagModel.dag_id).all()
}
assert not set(session.query(DagTag.dag_id, DagTag.name).all())
for row in session.query(DagModel.last_parsed_time).all():
assert row[0] is not None
def test_bulk_write_to_db_single_dag(self, testing_dag_bundle):
"""
Test bulk_write_to_db for a single dag using the index optimized query
"""
clear_db_dags()
dags = [
DAG(f"dag-bulk-sync-{i}", schedule=None, start_date=DEFAULT_DATE, tags=["test-dag"])
for i in range(1)
]
with assert_queries_count(6):
DAG.bulk_write_to_db("testing", None, dags)
with create_session() as session:
assert {"dag-bulk-sync-0"} == {row[0] for row in session.query(DagModel.dag_id).all()}
assert {
("dag-bulk-sync-0", "test-dag"),
} == set(session.query(DagTag.dag_id, DagTag.name).all())
for row in session.query(DagModel.last_parsed_time).all():
assert row[0] is not None
# Re-sync should do fewer queries
with assert_queries_count(8):
DAG.bulk_write_to_db("testing", None, dags)
with assert_queries_count(8):
DAG.bulk_write_to_db("testing", None, dags)
def test_bulk_write_to_db_multiple_dags(self, testing_dag_bundle):
"""
Test bulk_write_to_db for multiple dags which does not use the index optimized query
"""
clear_db_dags()
dags = [
DAG(f"dag-bulk-sync-{i}", schedule=None, start_date=DEFAULT_DATE, tags=["test-dag"])
for i in range(4)
]
with assert_queries_count(6):
DAG.bulk_write_to_db("testing", None, dags)
with create_session() as session:
assert {"dag-bulk-sync-0", "dag-bulk-sync-1", "dag-bulk-sync-2", "dag-bulk-sync-3"} == {
row[0] for row in session.query(DagModel.dag_id).all()
}
assert {
("dag-bulk-sync-0", "test-dag"),
("dag-bulk-sync-1", "test-dag"),
("dag-bulk-sync-2", "test-dag"),
("dag-bulk-sync-3", "test-dag"),
} == set(session.query(DagTag.dag_id, DagTag.name).all())
for row in session.query(DagModel.last_parsed_time).all():
assert row[0] is not None
# Re-sync should do fewer queries
with assert_queries_count(9):
DAG.bulk_write_to_db("testing", None, dags)
with assert_queries_count(9):
DAG.bulk_write_to_db("testing", None, dags)
@pytest.mark.parametrize("interval", [None, "@daily"])
def test_bulk_write_to_db_interval_save_runtime(self, testing_dag_bundle, interval):
mock_active_runs_of_dags = mock.MagicMock(side_effect=DagRun.active_runs_of_dags)
with mock.patch.object(DagRun, "active_runs_of_dags", mock_active_runs_of_dags):
dags_null_timetable = [
DAG("dag-interval-None", schedule=None, start_date=TEST_DATE),
DAG("dag-interval-test", schedule=interval, start_date=TEST_DATE),
]
DAG.bulk_write_to_db("testing", None, dags_null_timetable, session=settings.Session())
if interval:
mock_active_runs_of_dags.assert_called_once()
else:
mock_active_runs_of_dags.assert_not_called()
@pytest.mark.parametrize("state", [DagRunState.RUNNING, DagRunState.QUEUED])
def test_bulk_write_to_db_max_active_runs(self, testing_dag_bundle, state):
"""
Test that DagModel.next_dagrun_create_after is set to NULL when the dag cannot be created due to max
active runs being hit.
"""
dag = DAG(
dag_id="test_scheduler_verify_max_active_runs",
schedule=timedelta(days=1),
start_date=DEFAULT_DATE,
)
dag.max_active_runs = 1
EmptyOperator(task_id="dummy", dag=dag, owner="airflow")
session = settings.Session()
dag.clear()
DAG.bulk_write_to_db("testing", None, [dag], session=session)
model = session.get(DagModel, dag.dag_id)
assert model.next_dagrun == DEFAULT_DATE
assert model.next_dagrun_create_after == DEFAULT_DATE + timedelta(days=1)
dr = dag.create_dagrun(
run_id="test",
state=state,
logical_date=model.next_dagrun,
run_type=DagRunType.SCHEDULED,
session=session,
data_interval=(model.next_dagrun, model.next_dagrun),
run_after=model.next_dagrun_create_after,
triggered_by=DagRunTriggeredByType.TEST,
)
assert dr is not None
DAG.bulk_write_to_db("testing", None, [dag])
model = session.get(DagModel, dag.dag_id)
# We signal "at max active runs" by saying this run is never eligible to be created
assert model.next_dagrun_create_after is None
# test that bulk_write_to_db again doesn't update next_dagrun_create_after
DAG.bulk_write_to_db("testing", None, [dag])
model = session.get(DagModel, dag.dag_id)
assert model.next_dagrun_create_after is None
def test_bulk_write_to_db_has_import_error(self, testing_dag_bundle):
"""
Test that DagModel.has_import_error is set to false if no import errors.
"""
dag = DAG(dag_id="test_has_import_error", schedule=None, start_date=DEFAULT_DATE)
EmptyOperator(task_id="dummy", dag=dag, owner="airflow")
session = settings.Session()
dag.clear()
DAG.bulk_write_to_db("testing", None, [dag], session=session)
model = session.get(DagModel, dag.dag_id)
assert not model.has_import_errors
# Simulate Dagfileprocessor setting the import error to true
model.has_import_errors = True
session.merge(model)
session.flush()
model = session.get(DagModel, dag.dag_id)
# assert
assert model.has_import_errors
# parse
DAG.bulk_write_to_db("testing", None, [dag])
model = session.get(DagModel, dag.dag_id)
# assert that has_import_error is now false
assert not model.has_import_errors
session.close()
def test_bulk_write_to_db_assets(self, testing_dag_bundle):
"""
Ensure that assets referenced in a dag are correctly loaded into the database.
"""
dag_id1 = "test_asset_dag1"
dag_id2 = "test_asset_dag2"
task_id = "test_asset_task"
uri1 = "s3://asset/1"
a1 = Asset(uri=uri1, name="test_asset_1", extra={"not": "used"}, group="test-group")
a2 = Asset(uri="s3://asset/2", name="test_asset_2", group="test-group")
a3 = Asset(uri="s3://asset/3", name="test_asset-3", group="test-group")
dag1 = DAG(dag_id=dag_id1, start_date=DEFAULT_DATE, schedule=[a1])
EmptyOperator(task_id=task_id, dag=dag1, outlets=[a2, a3])
dag2 = DAG(dag_id=dag_id2, start_date=DEFAULT_DATE, schedule=None)
EmptyOperator(
task_id=task_id,
dag=dag2,
outlets=[Asset(uri=uri1, name="test_asset_1", extra={"should": "be used"}, group="test-group")],
)
session = settings.Session()
dag1.clear()
DAG.bulk_write_to_db("testing", None, [dag1, dag2], session=session)
session.commit()
stored_assets = {x.uri: x for x in session.query(AssetModel).all()}
asset1_orm = stored_assets[a1.uri]
asset2_orm = stored_assets[a2.uri]
asset3_orm = stored_assets[a3.uri]
assert stored_assets[uri1].extra == {"should": "be used"}
assert [x.dag_id for x in asset1_orm.consuming_dags] == [dag_id1]
assert [(x.task_id, x.dag_id) for x in asset1_orm.producing_tasks] == [(task_id, dag_id2)]
assert set(
session.query(
TaskOutletAssetReference.task_id,
TaskOutletAssetReference.dag_id,
TaskOutletAssetReference.asset_id,
)
.filter(TaskOutletAssetReference.dag_id.in_((dag_id1, dag_id2)))
.all()
) == {
(task_id, dag_id1, asset2_orm.id),
(task_id, dag_id1, asset3_orm.id),
(task_id, dag_id2, asset1_orm.id),
}
# now that we have verified that a new dag has its asset references recorded properly,
# we need to verify that *changes* are recorded properly.
# so if any references are *removed*, they should also be deleted from the DB
# so let's remove some references and see what happens
dag1 = DAG(dag_id=dag_id1, start_date=DEFAULT_DATE, schedule=None)
EmptyOperator(task_id=task_id, dag=dag1, outlets=[a2])
dag2 = DAG(dag_id=dag_id2, start_date=DEFAULT_DATE, schedule=None)
EmptyOperator(task_id=task_id, dag=dag2)
DAG.bulk_write_to_db("testing", None, [dag1, dag2], session=session)
session.commit()
session.expunge_all()
stored_assets = {x.uri: x for x in session.query(AssetModel).all()}
asset1_orm = stored_assets[a1.uri]
asset2_orm = stored_assets[a2.uri]
assert [x.dag_id for x in asset1_orm.consuming_dags] == []
assert set(
session.query(
TaskOutletAssetReference.task_id,
TaskOutletAssetReference.dag_id,
TaskOutletAssetReference.asset_id,
)
.filter(TaskOutletAssetReference.dag_id.in_((dag_id1, dag_id2)))
.all()
) == {(task_id, dag_id1, asset2_orm.id)}
@staticmethod
def _find_assets_activation(session) -> tuple[list[AssetModel], list[AssetModel]]:
assets = session.execute(
select(AssetModel, AssetActive)
.outerjoin(
AssetActive,
(AssetModel.name == AssetActive.name) & (AssetModel.uri == AssetActive.uri),
)
.order_by(AssetModel.uri)
).all()
return [a for a, v in assets if not v], [a for a, v in assets if v]
def test_bulk_write_to_db_does_not_activate(self, dag_maker, testing_dag_bundle, session):
"""
Assets are not activated on write, but later in the scheduler by the SchedulerJob.
"""
# Create four assets - two that have references and two that are unreferenced and marked as
# orphans
asset1 = Asset(uri="test://asset1", name="asset1", group="test-group")
asset2 = Asset(uri="test://asset2", name="asset2", group="test-group")
asset3 = Asset(uri="test://asset3", name="asset3", group="test-group")
asset4 = Asset(uri="test://asset4", name="asset4", group="test-group")
dag1 = DAG(dag_id="assets-1", start_date=DEFAULT_DATE, schedule=[asset1])
BashOperator(dag=dag1, task_id="task", bash_command="echo 1", outlets=[asset3])
DAG.bulk_write_to_db("testing", None, [dag1], session=session)
assert session.scalars(select(AssetModel).order_by(AssetModel.uri)).all() == [asset1, asset3]
assert session.scalars(select(AssetActive)).all() == []
dag1 = DAG(dag_id="assets-1", start_date=DEFAULT_DATE, schedule=[asset1, asset2])
BashOperator(dag=dag1, task_id="task", bash_command="echo 1", outlets=[asset3, asset4])
DAG.bulk_write_to_db("testing", None, [dag1], session=session)
assert session.scalars(select(AssetModel).order_by(AssetModel.uri)).all() == [
asset1,
asset2,
asset3,
asset4,
]
assert session.scalars(select(AssetActive)).all() == []