Mercurial > libervia-backend
view doc/jp/pubsub_hook.rst @ 3123:130f9cb6e0ab
core (memory/params): added `extra` argument to filter out params notably in `getParamsUI`:
In some case, it may be desirable for a frontend to not expose some parameters to user
(e.g. it is the case on Android with the `autoconnect_backend` parameter). An new `extra`
parameter has been added to a couple of parameters method for that: it can contain the
`ignore` key with a list of [category, name] of parameters to skip.
author | Goffi <goffi@goffi.org> |
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date | Sat, 25 Jan 2020 21:08:40 +0100 |
parents | 72583524cfd3 |
children |
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.. _jp-pubsub_hook: ==================================== pubsub/hook: PubSub hooks management ==================================== ``hook`` is a subcommands grouping all PubSub commands related to hooks management. Hooks are user actions launched on specific events. 3 types of hooks can be used: ``python`` A Python module is expected as argument. The module must be available in Python path, and it must have a ``hook`` function. ``python_file`` A path to a Python script is expected as argument. The script must contain a ``hook`` function. ``python_code`` Python code which will be directly executed. 3 variables will be set: ``host`` which contain the main SàT instance, ``client`` which contain the session attached to the profile, and ``item`` which contain the item attached to the event. .. note:: Hooks are executed in SàT context, and must be asynchronous. If they block, the whole SàT execution will be blocked. They have access to everything, so don't run a code that you don't absolutely trust. .. note:: Only ``python_file`` type is currently implemented .. note:: Hook is an experimental feature, the way to use it may change in the future. create ====== Create a hook of given type. Type is specified with ``-t {python,python_file,python_code}, --type {python,python_file,python_code}`` and a positional arguments is expected, which depends on the chosen type. By default the hook is temporary (it will be lost if the profile is disconnected), but you can make is persistent accross reconnexions if you use the ``-P, --persistent`` argument. example ------- Install a persistent hook on blog node, using the Python script named ``do_something_neat.py`` in ``$HOME`` directory:: $ jp pubsub node hook create -n urn:xmpp:microblog:0 -t python_file --persistent ~/do_something_neat.py delete ====== Delete one hook or all of them. To delete a hook, specify its type and argument (the that you have used with ``create``). If you use empty ``--type`` and ``--arg`` all hooks will be removed. example ------- Delete the ``do_something_neat.py`` hook:: $ jp pubsub node hook delete -n urn:xmpp:microblog:0 -t python_file --arg ~/do_something_neat.py list ==== List registered hooks. The output will give the following informations: service PubSub service on which the hook is attached. node PubSub node on which the hook is attached. type hook type arg hook arguments (dependant of hook type) persistent boolean indicating is the hook persist accross sessions. example ------- Get PubSub hooks registered for this profile in JSON:: $ jp pubsub hook list -O json