Message-ID: <1522825244.6263.6.camel@liw.fi>
From: Lars Wirzenius <liw@liw.fi>
To: ick discussions <ick-discuss@ick.liw.fi>
Date: Wed, 04 Apr 2018 10:00:44 +0300
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Subject: Notification system for ick
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I'd welcome feedback on this (text reproduced below):
http://ick.liw.fi/blog/2018/04/04/notifications_in_ick_the_mvp/

Would that be sufficiently useful for your initial needs? Is there
something there you'd be willing to do without?

- - -

Ick will need a way to notify users about build failures. Later on,
the same notification mechanism can be used for other things, but
let's
start with the minimal thing that is useful. Here's a sketch.

*
Notifications will be configured in the project resource in the
=20
controller.

* The controller will trigger a **notification service** to
actually
  send the notification. Don't want to burden the controller
with all
  the details of how notifications are sent, but the
controller needs
  to trigger a notification. (It will do this by
telling a worker to
  do it, so that we don't need to have the
controller do blocking HTTP
  calls to other services.)

* Notifications
will be triggered only on failures. Later on, this
  needs to be
configurable and include options like a "build now
  succeeds, when it
previously failed", and possibly also "always
  notify".

* Later on, ick
needs to be able to flexibly notify via a number of
  channels: email,
IRC, Matrix, SMS, RSS/Atom, etc. Probably also
  proprietary systems
like Slack will need to be supported. However,
  we'll start with just
email.

* The notification emails will always be sent with the same
sender
  information, and this will be configured by the sysadmin.
Also, it
  will always be sent with the same mail server, also
configured by
  the sysadmin. Probably using `/usr/sbin/sendmail`
rather than SMTP.
  Aiming for minimal necessary configuration to start
with.

* The template for the emails will be hard-coded in the source
code
  (for now).

The mails will containt the following information:

*
name of project that was built
* build number
* build id
* log id (for
use with icktool)
* last 1000 lines of build log
* exit code of build

Lat
er on, this will need to extended, but the above should suffice for
now
.

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