Added sub-section on procedures to README.md

This commit is contained in:
Fabio Manganiello 2021-02-23 00:11:16 +01:00
parent b27c9ee630
commit 1a7d0a3b07

View file

@ -221,6 +221,62 @@ def on_music_play_command(event, title=None, artist=None, **context):
run('music.mpd.play', results[0]['file'])
```
### Procedures
Procedures are pieces of custom logic that can be executed as atomic actions using `procedure.<name>` as an action name.
They can be defined either in the `config.yaml` or as Python scripts stored under `~/.config/platypush/scripts` -
provided that the procedure is also imported in `~/.config/platypush/scripts/__init__.py` so it can be discovered by
the service.
YAML example for a procedure that can be executed when we arrive home and turns on the lights if the luminosity is lower
that a certain thresholds, says a welcome home message using the TTS engine and starts playing the music:
```yaml
procedure.at_home:
# Get luminosity data from a sensor - e.g. LTR559
- action: gpio.sensor.ltr559.get_data
# If it's lower than a certain threshold, turn on the lights
- if ${int(light or 0) < 110}:
- action: light.hue.on
# Say a welcome home message
- action: tts.google.say
args:
text: Welcome home
# Play the music
- action: music.mpd.play
```
Python example:
```python
# Content of ~/.config/platypush/scripts/home.py
from platypush.procedure import procedure
from platypush.utils import run
@procedure
def at_home(**context):
sensor_data = run('gpio.sensor.ltr559.get_data')
if sensor_data['light'] < 110:
run('light.hue.on')
run('tts.google.say', text='Welcome home')
run('music.mpd.play')
```
In either case, you can easily trigger the at-home procedure by sending an action request message to a backend - for
example, over the HTTP backend:
```shell
curl -XPOST -H 'Content-Type: application/json' -H "Authorization: Bearer $YOUR_TOKEN" -d '
{
"type": "request",
"action": "procedure.at_home"
}' http://host:8008/execute
```
### The web interface
If [`backend.http`](https://docs.platypush.tech/en/latest/platypush/backend/http.html) is enabled then a web interface