Add Apprise Provider

[utkarsharma2]

Adding Apprise Provider, which is a module to send notifications to a bunch of services like -

1. Microsoft Teams
2. Twitter
3. Reddit

The entire list of supported services can be found here

This provider is especially helpful in scenarios where Airflow doesn't have a provider for service and you want to send notifications to that service. Like MS Teams at the moment, to send notifications to MS teams we would just need to create the apprise connection with the right value for the config field example, which you can get by following the instructions here

{"path": "https://team-name.office.com/webhook/abcdefgf8-2f4b-4eca-8f61-225c83db1967@abcdefg2-5a99-4849-8efc-c9e78d28e57d/IncomingWebhook/291289f63a8abd3593e834af4d79f9fe/a2329f43-0ffb-46ab-948b-c9abdad9d643"}

Then in your DAG you can do something like this -

from datetime import datetime
from airflow import DAG
from airflow.operators.bash import BashOperator
from airflow.providers.apprise.notifications.apprise import send_apprise_notification
from apprise import NotifyType

with DAG(
    dag_id="apprise_notifier_testing",
    schedule_interval=None,
    start_date=datetime(2023, 1, 1),
    catchup=False,
    on_success_callback=[
        send_apprise_notification(apprise_conn_id="apprise_conn", body="The dag {{ dag.dag_id }} failed", notify_type=NotifyType.FAILURE)
    ],
):
    BashOperator(
        task_id="mytask",
        on_failure_callback=[
            send_apprise_notification(apprise_conn_id="apprise_conn", body="The task {{ ti.task_id }} failed", notify_type=NotifyType.FAILURE)
        ],
        bash_command="fail",
    )

[eladkal]

I can see how this provider be useful however you need to follow the policy of adding new provider https://github.com/apache/airflow/blob/main/PROVIDERS.rst#accepting-new-community-providers

it needs to be discussed and accepted in the mailing list first

[jedcunningham]

Lazy consensus was reached in https://lists.apache.org/thread/2gh845jb8k0nlvzpqdm4pk1t44djhs92

[potiuk]

LGTM