Source code for tests.system.singularity.example_singularity

#
# 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 os
from datetime import datetime, timedelta

from airflow import DAG
from airflow.providers.singularity.operators.singularity import SingularityOperator
from airflow.providers.standard.operators.bash import BashOperator

[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
[docs]DAG_ID = "singularity_sample"

with DAG(
    DAG_ID,
    default_args={"retries": 1},
    schedule=timedelta(minutes=10),
    start_date=datetime(2021, 1, 1),
    catchup=False,
) as dag:
[docs]    t1 = BashOperator(task_id="print_date", bash_command="date")

    t2 = BashOperator(task_id="sleep", bash_command="sleep 5", retries=3)

    t3 = SingularityOperator(
        command="/bin/sleep 30",
        image="docker://busybox:1.30.1",
        task_id="singularity_op_tester",
    )

    t4 = BashOperator(task_id="print_hello", bash_command='echo "hello world!!!"')

    t1 >> [t2, t3]
    t3 >> t4


from tests_common.test_utils.system_tests import get_test_run  # noqa: E402

# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
[docs]test_run = get_test_run(dag)