pungi/doc/messaging.rst

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.. _messaging:
Progress notification
=====================
*Pungi* has the ability to emit notification messages about progress and
general status of the compose. These can be used to e.g. send messages to
*fedmsg*. This is implemented by actually calling a separate script.
The script will be called with one argument describing action that just
happened. A JSON-encoded object will be passed to standard input to provide
more information about the event. At the very least, the object will contain a
``compose_id`` key.
The script is invoked in compose directory and can read other information
there.
Currently these messages are sent:
* ``status-change`` -- when composing starts, finishes or fails; a ``status``
key is provided to indicate details
* ``phase-start`` -- on start of a phase
* ``phase-stop`` -- when phase is finished
* ``createiso-targets`` -- with a list of images to be created
* ``createiso-imagedone`` -- when any single image is finished
* ``createiso-imagefail`` -- when any single image fails to create
* ``fail-to-start`` -- when there are incorrect CLI options or errors in
configuration file; this message does not contain ``compose_id`` nor is it
started in the compose directory (which does not exist yet)
* ``ostree`` -- when a new commit is created, this message will announce its
hash and the name of ref it is meant for.
For phase related messages ``phase_name`` key is provided as well.
A ``pungi-fedmsg-notification`` script is provided and understands this
interface.
Setting it up
-------------
The script should be provided as a command line argument
``--notification-script``. ::
--notification-script=pungi-fedmsg-notification