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"""
Example Airflow DAG for Google Cloud Stackdriver service.
"""
from __future__ import annotations
import json
import os
from datetime import datetime
from airflow import models
from airflow.models.baseoperator import chain
from airflow.providers.google.cloud.operators.stackdriver import (
StackdriverDeleteAlertOperator,
StackdriverDeleteNotificationChannelOperator,
StackdriverDisableAlertPoliciesOperator,
StackdriverDisableNotificationChannelsOperator,
StackdriverEnableAlertPoliciesOperator,
StackdriverEnableNotificationChannelsOperator,
StackdriverListAlertPoliciesOperator,
StackdriverListNotificationChannelsOperator,
StackdriverUpsertAlertOperator,
StackdriverUpsertNotificationChannelOperator,
)
from airflow.utils.trigger_rule import TriggerRule
[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
[docs]PROJECT_ID = os.environ.get("SYSTEM_TESTS_GCP_PROJECT")
[docs]ALERT_1_NAME = f"alert_{ENV_ID}_1"
[docs]ALERT_2_NAME = f"alert_{ENV_ID}_2"
[docs]CHANNEL_1_NAME = f"channel_{ENV_ID}_1"
[docs]CHANNEL_2_NAME = f"channel_{ENV_ID}_2"
[docs]TEST_ALERT_POLICY_1 = {
"combiner": "OR",
"enabled": True,
"display_name": ALERT_1_NAME,
"conditions": [
{
"condition_threshold": {
"filter": (
'metric.label.state="blocked" AND '
'metric.type="agent.googleapis.com/processes/count_by_state" '
'AND resource.type="gce_instance"'
),
"comparison": "COMPARISON_GT",
"threshold_value": 100,
"duration": {"seconds": 900},
"trigger": {"percent": 0},
"aggregations": [
{
"alignment_period": {"seconds": 60},
"per_series_aligner": "ALIGN_MEAN",
"cross_series_reducer": "REDUCE_MEAN",
"group_by_fields": ["project", "resource.label.instance_id", "resource.label.zone"],
}
],
},
"display_name": f"{ALERT_1_NAME}_policy_1",
}
],
}
[docs]TEST_ALERT_POLICY_2 = {
"combiner": "OR",
"enabled": False,
"display_name": ALERT_2_NAME,
"conditions": [
{
"condition_threshold": {
"filter": (
'metric.label.state="blocked" AND '
'metric.type="agent.googleapis.com/processes/count_by_state" AND '
'resource.type="gce_instance"'
),
"comparison": "COMPARISON_GT",
"threshold_value": 100,
"duration": {"seconds": 900},
"trigger": {"percent": 0},
"aggregations": [
{
"alignment_period": {"seconds": 60},
"per_series_aligner": "ALIGN_MEAN",
"cross_series_reducer": "REDUCE_MEAN",
"group_by_fields": ["project", "resource.label.instance_id", "resource.label.zone"],
}
],
},
"display_name": f"{ALERT_2_NAME}_policy_2",
}
],
}
[docs]TEST_NOTIFICATION_CHANNEL_1 = {
"display_name": CHANNEL_1_NAME,
"enabled": True,
"labels": {"topic": f"projects/{PROJECT_ID}/topics/notificationTopic"},
"type": "pubsub",
}
[docs]TEST_NOTIFICATION_CHANNEL_2 = {
"display_name": CHANNEL_2_NAME,
"enabled": False,
"labels": {"topic": f"projects/{PROJECT_ID}/topics/notificationTopic2"},
"type": "pubsub",
}
with models.DAG(
dag_id=DAG_ID,
schedule="@once",
start_date=datetime(2021, 1, 1),
catchup=False,
tags=["example", "stackdriver"],
) as dag:
# [START howto_operator_gcp_stackdriver_upsert_notification_channel]
[docs] create_notification_channel = StackdriverUpsertNotificationChannelOperator(
task_id="create-notification-channel",
channels=json.dumps({"channels": [TEST_NOTIFICATION_CHANNEL_1, TEST_NOTIFICATION_CHANNEL_2]}),
)
# [END howto_operator_gcp_stackdriver_upsert_notification_channel]
# [START howto_operator_gcp_stackdriver_enable_notification_channel]
enable_notification_channel = StackdriverEnableNotificationChannelsOperator(
task_id="enable-notification-channel", filter_='type="pubsub"'
)
# [END howto_operator_gcp_stackdriver_enable_notification_channel]
# [START howto_operator_gcp_stackdriver_disable_notification_channel]
disable_notification_channel = StackdriverDisableNotificationChannelsOperator(
task_id="disable-notification-channel", filter_=f'displayName="{CHANNEL_1_NAME}"'
)
# [END howto_operator_gcp_stackdriver_disable_notification_channel]
# [START howto_operator_gcp_stackdriver_list_notification_channel]
list_notification_channel = StackdriverListNotificationChannelsOperator(
task_id="list-notification-channel", filter_='type="pubsub"'
)
# [END howto_operator_gcp_stackdriver_list_notification_channel]
# [START howto_operator_gcp_stackdriver_upsert_alert_policy]
create_alert_policy = StackdriverUpsertAlertOperator(
task_id="create-alert-policies",
alerts=json.dumps({"policies": [TEST_ALERT_POLICY_1, TEST_ALERT_POLICY_2]}),
)
# [END howto_operator_gcp_stackdriver_upsert_alert_policy]
# [START howto_operator_gcp_stackdriver_enable_alert_policy]
enable_alert_policy = StackdriverEnableAlertPoliciesOperator(
task_id="enable-alert-policies",
filter_=f'(displayName="{ALERT_1_NAME}" OR displayName="{ALERT_2_NAME}")',
)
# [END howto_operator_gcp_stackdriver_enable_alert_policy]
# [START howto_operator_gcp_stackdriver_disable_alert_policy]
disable_alert_policy = StackdriverDisableAlertPoliciesOperator(
task_id="disable-alert-policies",
filter_=f'displayName="{ALERT_1_NAME}"',
)
# [END howto_operator_gcp_stackdriver_disable_alert_policy]
# [START howto_operator_gcp_stackdriver_list_alert_policy]
list_alert_policies = StackdriverListAlertPoliciesOperator(
task_id="list-alert-policies",
)
# [END howto_operator_gcp_stackdriver_list_alert_policy]
# [START howto_operator_gcp_stackdriver_delete_notification_channel]
delete_notification_channel = StackdriverDeleteNotificationChannelOperator(
task_id="delete-notification-channel",
name="{{ task_instance.xcom_pull('list-notification-channel')[0]['name'] }}",
)
# [END howto_operator_gcp_stackdriver_delete_notification_channel]
delete_notification_channel.trigger_rule = TriggerRule.ALL_DONE
delete_notification_channel_2 = StackdriverDeleteNotificationChannelOperator(
task_id="delete-notification-channel-2",
name="{{ task_instance.xcom_pull('list-notification-channel')[1]['name'] }}",
trigger_rule=TriggerRule.ALL_DONE,
)
# [START howto_operator_gcp_stackdriver_delete_alert_policy]
delete_alert_policy = StackdriverDeleteAlertOperator(
task_id="delete-alert-policy",
name="{{ task_instance.xcom_pull('list-alert-policies')[0]['name'] }}",
)
# [END howto_operator_gcp_stackdriver_delete_alert_policy]
delete_alert_policy.trigger_rule = TriggerRule.ALL_DONE
delete_alert_policy_2 = StackdriverDeleteAlertOperator(
task_id="delete-alert-policy-2",
name="{{ task_instance.xcom_pull('list-alert-policies')[1]['name'] }}",
trigger_rule=TriggerRule.ALL_DONE,
)
chain(
create_notification_channel,
enable_notification_channel,
disable_notification_channel,
list_notification_channel,
create_alert_policy,
enable_alert_policy,
disable_alert_policy,
list_alert_policies,
delete_notification_channel,
delete_notification_channel_2,
delete_alert_policy,
delete_alert_policy_2,
)
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)
