Add time window

[stanim]

The business want to be able to specify a time window (start time and end time) in which the website turns automatically the website on and off. What would be the best method? Maybe a new setting which defines a function which is called in need_maintenance_response?
Would you accept a pull request for this?

[fabiocaccamo]

@stanim I have this feature in mind since long time, but actually I have not time to implement it, so I share with you my idea in case you want to send a PR:

MAINTENANCE_MODE_SCHEDULE={
    'mon': {
        'on': '03:00', 
        'off': '03:30',
    },
    'tue': {
        'on': '14:30', 
        'off': '14:45',
    },
    # for each day, or use * for all days
}

I would add support to a new setting like this one, what do you think about it?

[stanim]

The problem is that the business needs to be able to configure this from a webview. So Django settings are no solution, as settings are supposed to be immutable. Would it be possible to store the settings in the maintenance lock file?

[fabiocaccamo]

I understand your needs, but it seems a specific case. The maintenance state file is not for this, you should write a custom state backend that return values based on the configuration done in the webview.
Check MAINTENANCE_MODE_STATE_BACKEND setting in the README.

[fabiocaccamo]

@stanim check #66 if you are interested to implement a quick schedule system by @scwall using the backend/database, or check #48 if you need to control maintenance mode state using the admin.

[miklevtsov]

I use https://django-constance.readthedocs.io/en/latest/ for configuring stuff like this. For example:

CONSTANCE_CONFIG = {
    "MAINTENANCE_ENABLED": (False, "Maintenance mode is enabled", bool),
    "MAINTENANCE_END": (datetime(2023, 11, 7, 11), "Maintenance mode end", datetime),
}

So you just need to implement MAINTENANCE_MODE_STATE_BACKEND as mentioned before to use this setting.

@fabiocaccamo Maybe you want to add this backend to your package, so people can choose the bundled backend if they use Constance?

[fabiocaccamo]

@miklevtsov of which backend are you talking about?

I think that this should be managed at settings level as described here #66 (comment) and also that any backend implementation would be too specific.

[Pavankumardontha]

@fabiocaccamo can i contribute to this ??

[fabiocaccamo]

@Pavankumardontha sure, but please read my prev comment.

[Pavankumardontha]

@fabiocaccamo i have read the discussions. I feel webview is not possible for now since we need db and you want to keep it db free. What can i do more to contribute to this ? Any suggestion from your end ?

[fabiocaccamo]

@Pavankumardontha my idea is to add a new MAINTENANCE_MODE_SCHEDULE setting:

# or this to schedule maintenance every day:
MAINTENANCE_MODE_SCHEDULE = {
    '*': {'start':'01:00', 'end':'02:00'},
}

# or this to specify days
MAINTENANCE_MODE_SCHEDULE = {
    'sun': {'start':'01:00', 'end':'02:00'},
    'mon': None,
    'tue': None,
    'wed': {'start':'01:00', 'end':'02:00'},
    'thu': None,
    'fri': None,
    'sat': None,
}

Then you only need to update this function:
https://github.com/fabiocaccamo/django-maintenance-mode/blob/main/maintenance_mode/http.py#L184

---

An alternative solution that is already supported, is to use cronjobs for calling the managements commands at specific days/hours.