Source code for tests.system.providers.amazon.aws.example_emr_serverless

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from datetime import datetime

from airflow.models.baseoperator import chain
from airflow.models.dag import DAG
from airflow.providers.amazon.aws.operators.emr import (
    EmrServerlessCreateApplicationOperator,
    EmrServerlessDeleteApplicationOperator,
    EmrServerlessStartJobOperator,
)
from airflow.providers.amazon.aws.operators.s3 import S3CreateBucketOperator, S3DeleteBucketOperator
from airflow.providers.amazon.aws.sensors.emr import EmrServerlessApplicationSensor, EmrServerlessJobSensor
from airflow.utils.trigger_rule import TriggerRule
from tests.system.providers.amazon.aws.utils import ENV_ID_KEY, SystemTestContextBuilder


[docs]DAG_ID = 'example_emr_serverless'


# Externally fetched variables:

[docs]ROLE_ARN_KEY = 'ROLE_ARN'




[docs]sys_test_context_task = SystemTestContextBuilder().add_variable(ROLE_ARN_KEY).build()


with DAG(
    dag_id=DAG_ID,
    schedule='@once',
    start_date=datetime(2021, 1, 1),
    tags=['example'],
    catchup=False,
) as dag:

[docs]    test_context = sys_test_context_task()

    env_id = test_context[ENV_ID_KEY]
    role_arn = test_context[ROLE_ARN_KEY]
    bucket_name = f'{env_id}-emr-serverless-bucket'
    entryPoint = "s3://us-east-1.elasticmapreduce/emr-containers/samples/wordcount/scripts/wordcount.py"
    create_s3_bucket = S3CreateBucketOperator(task_id='create_s3_bucket', bucket_name=bucket_name)

    SPARK_JOB_DRIVER = {
        "sparkSubmit": {
            "entryPoint": entryPoint,
            "entryPointArguments": [f"s3://{bucket_name}/output"],
            "sparkSubmitParameters": "--conf spark.executor.cores=1 --conf spark.executor.memory=4g\
                --conf spark.driver.cores=1 --conf spark.driver.memory=4g --conf spark.executor.instances=1",
        }
    }

    SPARK_CONFIGURATION_OVERRIDES = {
        "monitoringConfiguration": {"s3MonitoringConfiguration": {"logUri": f"s3://{bucket_name}/logs"}}
    }

    # [START howto_operator_emr_serverless_create_application]
    emr_serverless_app = EmrServerlessCreateApplicationOperator(
        task_id='create_emr_serverless_task',
        release_label='emr-6.6.0',
        job_type="SPARK",
        config={'name': 'new_application'},
        wait_for_completion=False,
    )
    # [END howto_operator_emr_serverless_create_application]

    emr_serverless_app_id = emr_serverless_app.output

    # [START howto_sensor_emr_serverless_application]
    wait_for_app_creation = EmrServerlessApplicationSensor(
        task_id='wait_for_app_creation',
        application_id=emr_serverless_app_id,
    )
    # [END howto_sensor_emr_serverless_application]

    # [START howto_operator_emr_serverless_start_job]
    start_job = EmrServerlessStartJobOperator(
        task_id='start_emr_serverless_job',
        application_id=emr_serverless_app_id,
        execution_role_arn=role_arn,
        job_driver=SPARK_JOB_DRIVER,
        configuration_overrides=SPARK_CONFIGURATION_OVERRIDES,
    )
    # [END howto_operator_emr_serverless_start_job]

    # [START howto_sensor_emr_serverless_job]
    wait_for_job = EmrServerlessJobSensor(
        task_id='wait_for_job', application_id=emr_serverless_app_id, job_run_id=start_job.output
    )
    # [END howto_sensor_emr_serverless_job]

    # [START howto_operator_emr_serverless_delete_application]
    delete_app = EmrServerlessDeleteApplicationOperator(
        task_id='delete_application',
        application_id=emr_serverless_app_id,
        trigger_rule=TriggerRule.ALL_DONE,
    )
    # [END howto_operator_emr_serverless_delete_application]

    delete_s3_bucket = S3DeleteBucketOperator(
        task_id='delete_s3_bucket',
        bucket_name=bucket_name,
        force_delete=True,
        trigger_rule=TriggerRule.ALL_DONE,
    )
    chain(
        # TEST SETUP
        test_context,
        create_s3_bucket,
        # TEST BODY
        emr_serverless_app,
        wait_for_app_creation,
        start_job,
        wait_for_job,
        # TEST TEARDOWN
        delete_app,
        delete_s3_bucket,
    )

    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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