Source code for tests.system.providers.google.cloud.dataproc.example_dataproc_batch

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"""
Example Airflow DAG for Dataproc batch operators.
"""

import os
from datetime import datetime

from airflow import models
from airflow.providers.google.cloud.operators.dataproc import (
    DataprocCreateBatchOperator,
    DataprocDeleteBatchOperator,
    DataprocGetBatchOperator,
    DataprocListBatchesOperator,
)
from airflow.utils.trigger_rule import TriggerRule

[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
[docs]DAG_ID = "dataproc_batch"
[docs]PROJECT_ID = os.environ.get("SYSTEM_TESTS_GCP_PROJECT", "")
[docs]REGION = "europe-west1"
[docs]BATCH_ID = f"test-batch-id-{ENV_ID}"
[docs]BATCH_CONFIG = {
    "spark_batch": {
        "jar_file_uris": ["file:///usr/lib/spark/examples/jars/spark-examples.jar"],
        "main_class": "org.apache.spark.examples.SparkPi",
    },
}


with models.DAG(
    DAG_ID,
    schedule_interval='@once',
    start_date=datetime(2021, 1, 1),
    catchup=False,
    tags=["example", "dataproc"],
) as dag:
    # [START how_to_cloud_dataproc_create_batch_operator]
[docs]    create_batch = DataprocCreateBatchOperator(
        task_id="create_batch",
        project_id=PROJECT_ID,
        region=REGION,
        batch=BATCH_CONFIG,
        batch_id=BATCH_ID,
        timeout=5.0,
    )
    # [END how_to_cloud_dataproc_create_batch_operator]

    # [START how_to_cloud_dataproc_get_batch_operator]
    get_batch = DataprocGetBatchOperator(
        task_id="get_batch", project_id=PROJECT_ID, region=REGION, batch_id=BATCH_ID
    )
    # [END how_to_cloud_dataproc_get_batch_operator]

    # [START how_to_cloud_dataproc_list_batches_operator]
    list_batches = DataprocListBatchesOperator(
        task_id="list_batches",
        project_id=PROJECT_ID,
        region=REGION,
    )
    # [END how_to_cloud_dataproc_list_batches_operator]

    # [START how_to_cloud_dataproc_delete_batch_operator]
    delete_batch = DataprocDeleteBatchOperator(
        task_id="delete_batch", project_id=PROJECT_ID, region=REGION, batch_id=BATCH_ID
    )
    # [END how_to_cloud_dataproc_delete_batch_operator]
    delete_batch.trigger_rule = TriggerRule.ALL_DONE

    create_batch >> get_batch >> list_batches >> delete_batch

    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)