Skip to main content

Openhab python rule engine

Project description

OpenHAB python rule engine

A python 3.x rule engine for OpenHAB. This rule engine allows defining rule by using python 3.x.

Please consider that the OpenHAB username/password auhentication (basic authentication) needs to be enabled. To do this, open API security settings and activate advanced setting Allow Basic Authentication.

To run this software you may use Docker or PIP package manager such as shown below

Docker approach

sudo docker run -e openhab_uri=http://192.168.1.17:8080 -e user=me -e pwd=secret -v /etc/openhab2/automation/rules/python:/rules grro/pythonrule_engine 

PIP approach

sudo pip install openhab-pythonrule-engine

After this installation you may start the rule engine inside your python code or via command line using

sudo pyrule --command listen --openhab_uri http://localhost:8080 --python_rule_directory /etc/openhab2/automation/rules/python --user me --pwd secret

Here, the rule engine will connect the openhab instance running on the local machine on port 8080. Furthermore, the directory /etc/openhab2/automation/rules/python will be used to scan for python-based rules

By running a systemd-based Linux distribution you may use the register command to register and start the rule engine as systemd unit. By doing this the rule engine will be started automatically on boot. Starting the rule engine manually using the listen command is no longer necessary.

sudo pyrule --command register --openhab_uri http://localhost:8080 --python_rule_directory /etc/openhab2/automation/rules/python --user me --pwd secret

Rules

To trigger a rule methode the @when decorator has to be used. Currently, the conditions listed below are supported

condition example description
cron @when('Time cron */1 * * * *') fires based on cron expression
item state change @when('Item PhoneLisaLastSeen changed') fires when the specified Item's State changes
item command @when('Item SelectDoorCam received command ON')
@when('Item SelectDoorCam received command OFF')
fires when the specified Item receives a Command

Example: my_rule.py (located within /etc/openhab2/automation/rules/python)

from openhab_pythonrule_engine.condition import when
from openhab_pythonrule_engine.item_registry import ItemRegistry


@when("Time cron */1 * * * *") # each minute
@when("Item PhoneLisaLastSeen changed")
@when("Item PhoneTimLastSeen changed")
def update_presence_based_on_phone_seen(item_registry: ItemRegistry):
    last_time_present = item_registry.get_state_as_datetime('LastDateTimePresence')
    for phone_name in item_registry.get_group_membernames('Phones'):
        last_seen = item_registry.get_state_as_datetime(phone_name)
        print(last_seen)
        if last_seen > last_time_present:
            last_time_present = last_seen
    item_registry.set_state('LastDateTimePresence', last_time_present)

# uncomment the code below for local debugging
#item_registry = ItemRegistry.new_singleton(openhab_uri="http://192.168.1.27:8080/", user="xxx", pwd="secret")
#update_presence_based_on_phone_seen(item_registry)

If the rule method defines a (single!) argument, the item_registry object will be injected automatically. The item_registry provides methods to get and set the item state. By setting the state the data value will be auto converted into the item specific data type

Project details


Release history Release notifications | RSS feed

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

openhab_pythonrule_engine-1.1.20.tar.gz (15.4 kB view details)

Uploaded Source

Built Distribution

openhab_pythonrule_engine-1.1.20-py3-none-any.whl (22.4 kB view details)

Uploaded Python 3

File details

Details for the file openhab_pythonrule_engine-1.1.20.tar.gz.

File metadata

File hashes

Hashes for openhab_pythonrule_engine-1.1.20.tar.gz
Algorithm Hash digest
SHA256 5ad2f79748fc04f7ec61be43d201dd751839e18082a587ebb01507164d2c5fe8
MD5 090e672d42c740456d87cd0b15272184
BLAKE2b-256 5c0d725b4dfe6ef6daca64e109364591c3ff454dfc7865f0f3b4a58f9fd5ad1c

See more details on using hashes here.

File details

Details for the file openhab_pythonrule_engine-1.1.20-py3-none-any.whl.

File metadata

File hashes

Hashes for openhab_pythonrule_engine-1.1.20-py3-none-any.whl
Algorithm Hash digest
SHA256 aa5e0d3d17cc442f3937cf01353d50999e6865a8d48854427ade9bd8371f40c4
MD5 bfce7855d19e753315a7ad86bc9b3a57
BLAKE2b-256 8371021e3351ffd187dd427b4347add23ead65e22bbfe12688305d17e07f7ce2

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page