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"""
Example use of Teradata Compute Cluster Provision Operator
"""
from __future__ import annotations
import datetime
import os
import pytest
from airflow import DAG
from airflow.models import Param
try:
from airflow.providers.teradata.operators.teradata_compute_cluster import (
TeradataComputeClusterDecommissionOperator,
TeradataComputeClusterProvisionOperator,
TeradataComputeClusterResumeOperator,
TeradataComputeClusterSuspendOperator,
)
except ImportError:
pytest.skip("TERADATA provider not available", allow_module_level=True)
# [START teradata_vantage_lake_compute_cluster_howto_guide]
[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
[docs]DAG_ID = "example_teradata_computer_cluster"
with DAG(
dag_id=DAG_ID,
start_date=datetime.datetime(2020, 2, 2),
schedule="@once",
catchup=False,
default_args={"teradata_conn_id": "teradata_lake"},
render_template_as_native_obj=True,
params={
"compute_group_name": Param(
"compute_group_test",
type="string",
title="Compute cluster group Name:",
description="Enter compute cluster group name.",
),
"compute_profile_name": Param(
"compute_profile_test",
type="string",
title="Compute cluster profile Name:",
description="Enter compute cluster profile name.",
),
"query_strategy": Param(
"STANDARD",
type="string",
title="Compute cluster instance type:",
description="Enter compute cluster instance type. Valid values are STANDARD, ANALYTIC",
),
"compute_map": Param(
"TD_COMPUTE_XSMALL",
type="string",
title="Compute Map Name:",
description="Enter compute cluster compute map name.",
),
"compute_attribute": Param(
"MIN_COMPUTE_COUNT(1) MAX_COMPUTE_COUNT(5) INITIALLY_SUSPENDED('FALSE')",
type="string",
title="Compute cluster compute attribute:",
description="Enter compute cluster compute attribute values.",
),
"teradata_conn_id": Param(
"teradata_lake",
type="string",
title="Teradata ConnectionId:",
description="Enter Teradata connection id.",
),
"timeout": Param(
20,
type="integer",
title="Timeout:",
description="Time elapsed before the task times out and fails. Timeout is in minutes.",
),
},
) as dag:
# [START teradata_vantage_lake_compute_cluster_provision_howto_guide]
[docs] compute_cluster_provision_operation = TeradataComputeClusterProvisionOperator(
task_id="compute_cluster_provision_operation",
compute_profile_name="{{ params.compute_profile_name }}",
compute_group_name="{{ params.compute_group_name }}",
teradata_conn_id="{{ params.teradata_conn_id }}",
timeout="{{ params.timeout }}",
query_strategy="{{ params.query_strategy }}",
compute_map="{{ params.compute_map }}",
compute_attribute="{{ params.compute_attribute }}",
)
# [END teradata_vantage_lake_compute_cluster_provision_howto_guide]
# [START teradata_vantage_lake_compute_cluster_suspend_howto_guide]
compute_cluster_suspend_operation = TeradataComputeClusterSuspendOperator(
task_id="compute_cluster_suspend_operation",
compute_profile_name="{{ params.compute_profile_name }}",
compute_group_name="{{ params.compute_group_name }}",
teradata_conn_id="{{ params.teradata_conn_id }}",
timeout="{{ params.timeout }}",
)
# [END teradata_vantage_lake_compute_cluster_suspend_howto_guide]
# [START teradata_vantage_lake_compute_cluster_resume_howto_guide]
compute_cluster_resume_operation = TeradataComputeClusterResumeOperator(
task_id="compute_cluster_resume_operation",
compute_profile_name="{{ params.compute_profile_name }}",
compute_group_name="{{ params.compute_group_name }}",
teradata_conn_id="{{ params.teradata_conn_id }}",
timeout="{{ params.timeout }}",
)
# [END teradata_vantage_lake_compute_cluster_resume_howto_guide]
# [START teradata_vantage_lake_compute_cluster_decommission_howto_guide]
compute_cluster_decommission_operation = TeradataComputeClusterDecommissionOperator(
task_id="compute_cluster_decommission_operation",
compute_profile_name="{{ params.compute_profile_name }}",
compute_group_name="{{ params.compute_group_name }}",
delete_compute_group=bool("{{ params.delete_compute_group }}"),
teradata_conn_id="{{ params.teradata_conn_id }}",
timeout="{{ params.timeout }}",
)
# [END teradata_vantage_lake_compute_cluster_decommission_howto_guide]
(
compute_cluster_provision_operation
>> compute_cluster_suspend_operation
>> compute_cluster_resume_operation
>> compute_cluster_decommission_operation
)
# [END teradata_vantage_lake_compute_cluster_howto_guide]
from tests_common.test_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_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)