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"""
Example Airflow DAG for Google Cloud Stackdriver service.
"""
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,
)
PROJECT_ID = os.environ.get("GCP_PROJECT_ID", "example-project")
TEST_ALERT_POLICY_1 = {
"combiner": "OR",
"enabled": True,
"display_name": "test alert 1",
"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": "test_alert_policy_1",
}
],
}
TEST_ALERT_POLICY_2 = {
"combiner": "OR",
"enabled": False,
"display_name": "test alert 2",
"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": "test_alert_policy_2",
}
],
}
TEST_NOTIFICATION_CHANNEL_1 = {
"display_name": "channel1",
"enabled": True,
"labels": {"auth_token": "top-secret", "channel_name": "#channel"},
"type_": "slack",
}
TEST_NOTIFICATION_CHANNEL_2 = {
"display_name": "channel2",
"enabled": False,
"labels": {"auth_token": "top-secret", "channel_name": "#channel"},
"type_": "slack",
}
with models.DAG(
'example_stackdriver',
schedule_interval='@once', # Override to match your needs
start_date=datetime(2021, 1, 1),
catchup=False,
tags=['example'],
) as dag:
# [START howto_operator_gcp_stackdriver_upsert_notification_channel]
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="slack"'
)
# [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_='displayName="channel1"'
)
# [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="slack"'
)
# [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_='(displayName="test alert 1" OR displayName="test alert 2")',
)
# [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_='displayName="test alert 1"',
)
# [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_2 = StackdriverDeleteNotificationChannelOperator(
task_id='delete-notification-channel-2',
name="{{ task_instance.xcom_pull('list-notification-channel')[1]['name'] }}",
)
# [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_2 = StackdriverDeleteAlertOperator(
task_id='delete-alert-policy-2',
name="{{ task_instance.xcom_pull('list-alert-policies')[1]['name'] }}",
)
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,
)