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"""
Example Airflow Dag for Apache Beam operators
"""

from __future__ import annotations

from airflow import models
from airflow.providers.apache.beam.operators.beam import BeamRunPythonPipelineOperator
from airflow.providers.google.cloud.operators.dataflow import DataflowConfiguration

from system.apache.beam.utils import (
    DEFAULT_ARGS,
    GCP_PROJECT_ID,
    GCS_OUTPUT,
    GCS_PYTHON,
    GCS_STAGING,
    GCS_TMP,
    START_DATE,
)

with models.DAG(
    "example_beam_native_python",
    start_date=START_DATE,
    schedule=None,  # Override to match your needs
    catchup=False,
    default_args=DEFAULT_ARGS,
    tags=["example"],
) as dag:
    # [START howto_operator_start_python_direct_runner_pipeline_local_file]
    start_python_pipeline_local_direct_runner = BeamRunPythonPipelineOperator(
        task_id="start_python_pipeline_local_direct_runner",
        py_file="apache_beam.examples.wordcount",
        py_options=["-m"],
        py_requirements=["apache-beam[gcp]==2.59.0"],
        py_interpreter="python3",
        py_system_site_packages=False,
    )
    # [END howto_operator_start_python_direct_runner_pipeline_local_file]

    # [START howto_operator_start_python_direct_runner_pipeline_gcs_file]
    start_python_pipeline_direct_runner = BeamRunPythonPipelineOperator(
        task_id="start_python_pipeline_direct_runner",
        py_file=GCS_PYTHON,
        py_options=[],
        pipeline_options={"output": GCS_OUTPUT},
        py_requirements=["apache-beam[gcp]==2.59.0"],
        py_interpreter="python3",
        py_system_site_packages=False,
    )
    # [END howto_operator_start_python_direct_runner_pipeline_gcs_file]

    # [START howto_operator_start_python_dataflow_runner_pipeline_gcs_file]
    start_python_pipeline_dataflow_runner = BeamRunPythonPipelineOperator(
        task_id="start_python_pipeline_dataflow_runner",
        runner="DataflowRunner",
        py_file=GCS_PYTHON,
        pipeline_options={
            "tempLocation": GCS_TMP,
            "stagingLocation": GCS_STAGING,
            "output": GCS_OUTPUT,
        },
        py_options=[],
        py_requirements=["apache-beam[gcp]==2.59.0"],
        py_interpreter="python3",
        py_system_site_packages=False,
        dataflow_config=DataflowConfiguration(
            job_name="{{task.task_id}}", project_id=GCP_PROJECT_ID, location="us-central1"
        ),
    )
    # [END howto_operator_start_python_dataflow_runner_pipeline_gcs_file]

    start_python_pipeline_local_spark_runner = BeamRunPythonPipelineOperator(
        task_id="start_python_pipeline_local_spark_runner",
        py_file="apache_beam.examples.wordcount",
        runner="SparkRunner",
        py_options=["-m"],
        py_requirements=["apache-beam[gcp]==2.59.0"],
        py_interpreter="python3",
        py_system_site_packages=False,
    )

    start_python_pipeline_local_flink_runner = BeamRunPythonPipelineOperator(
        task_id="start_python_pipeline_local_flink_runner",
        py_file="apache_beam.examples.wordcount",
        runner="FlinkRunner",
        py_options=["-m"],
        pipeline_options={
            "output": "/tmp/start_python_pipeline_local_flink_runner",
        },
        py_requirements=["apache-beam[gcp]==2.59.0"],
        py_interpreter="python3",
        py_system_site_packages=False,
    )

    (
        [
            start_python_pipeline_local_direct_runner,
            start_python_pipeline_direct_runner,
        ]
        >> start_python_pipeline_dataflow_runner
        >> start_python_pipeline_local_flink_runner
        >> start_python_pipeline_local_spark_runner
    )


from tests_common.test_utils.system_tests import get_test_run

# Needed to run the example Dag with pytest (see: contributing-docs/testing/system_tests.rst)
test_run = get_test_run(dag)
