Source code for tests.system.providers.google.leveldb.example_leveldb

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"""
Example use of LevelDB operators.
"""

import os
from datetime import datetime

from airflow import models
from airflow.providers.google.leveldb.operators.leveldb import LevelDBOperator
from airflow.utils.trigger_rule import TriggerRule


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


[docs]DAG_ID = "example_leveldb"


with models.DAG(
    DAG_ID,
    start_date=datetime(2021, 1, 1),
    schedule_interval='@once',
    catchup=False,
    tags=['example'],
) as dag:
    # [START howto_operator_leveldb_get_key]

[docs]    get_key_leveldb_task = LevelDBOperator(task_id='get_key_leveldb', command='get', key=b'key')

    # [END howto_operator_leveldb_get_key]
    # [START howto_operator_leveldb_put_key]
    put_key_leveldb_task = LevelDBOperator(
        task_id='put_key_leveldb',
        command='put',
        key=b'another_key',
        value=b'another_value',
        trigger_rule=TriggerRule.ALL_DONE,
    )
    # [END howto_operator_leveldb_put_key]
    get_key_leveldb_task >> put_key_leveldb_task

    from tests.system.utils.watcher import watcher

    # This test needs watcher in order to properly mark success/failure
    # when "tearDown" task with trigger rule is part of the DAG
    list(dag.tasks) >> watcher()


from tests.system.utils 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)

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