HABApp

Easy automation with MQTT and/or openHAB

HABApp is a asyncio/multithread application that connects to an openHAB instance and/or a MQTT broker. It is possible to create rules that listen to events from these instances and then react accordingly.

Goals

The goal of this application is to provide a simple way to create home automation rules in python. With full syntax highlighting and descriptive names it should almost never be required to look something up in the documentation

Documentation

The documentation can be found at here

Examples

MQTT Rule example

import datetime
import random

import HABApp
from HABApp.mqtt.items import MqttItem
from HABApp.core.events import ValueChangeEvent, ValueChangeEventFilter, ValueUpdateEvent, ValueUpdateEventFilter


class ExampleMqttTestRule(HABApp.Rule):
    def __init__(self):
        super().__init__()

        self.run.every(
            start_time=datetime.timedelta(seconds=60),
            interval=datetime.timedelta(seconds=30),
            callback=self.publish_rand_value
        )

        # this will trigger every time a message is received under "test/test"
        self.listen_event('test/test', self.topic_updated, ValueUpdateEventFilter())

        # This will create an item which will store the payload of the topic so it can be accessed later.
        self.item = MqttItem.get_create_item('test/value_stored')
        # Since the payload is now stored we can trigger only if the value has changed
        self.item.listen_event(self.item_topic_updated, ValueChangeEventFilter())

    def publish_rand_value(self):
        print('test mqtt_publish')
        self.mqtt.publish('test/test', str(random.randint(0, 1000)))

    def topic_updated(self, event: ValueUpdateEvent):
        assert isinstance(event, ValueUpdateEvent), type(event)
        print( f'mqtt topic "test/test" updated to {event.value}')

    def item_topic_updated(self, event: ValueChangeEvent):
        print(self.item.value)  # will output the current item value
        print( f'mqtt topic "test/value_stored" changed from {event.old_value} to {event.value}')


ExampleMqttTestRule()

openHAB rule example

import HABApp
from HABApp.core.events import ValueUpdateEvent, ValueChangeEvent, ValueChangeEventFilter, ValueUpdateEventFilter
from HABApp.openhab.events import ItemCommandEvent, ItemStateEventFilter, ItemCommandEventFilter, \
  ItemStateChangedEventFilter


class MyOpenhabRule(HABApp.Rule):

  def __init__(self):
    super().__init__()

    # Trigger on item updates
    self.listen_event('TestContact', self.item_state_update, ItemStateEventFilter())
    self.listen_event('TestDateTime', self.item_state_update, ValueUpdateEventFilter())

    # Trigger on item changes
    self.listen_event('TestDateTime', self.item_state_change, ItemStateChangedEventFilter())
    self.listen_event('TestSwitch', self.item_state_change, ValueChangeEventFilter())

    # Trigger on item commands
    self.listen_event('TestSwitch', self.item_command, ItemCommandEventFilter())

  def item_state_update(self, event: ValueUpdateEvent):
    assert isinstance(event, ValueUpdateEvent)
    print(f'{event}')

  def item_state_change(self, event: ValueChangeEvent):
    assert isinstance(event, ValueChangeEvent)
    print(f'{event}')

    # interaction is available through self.openHAB or self.oh
    self.openhab.send_command('TestItemCommand', 'ON')

  def item_command(self, event: ItemCommandEvent):
    assert isinstance(event, ItemCommandEvent)
    print(f'{event}')

    # interaction is available through self.openhab or self.oh
    self.oh.post_update('TestItemUpdate', 123)


MyOpenhabRule()

Changelog

1.0.3 (09.08.2022)

• OpenHAB Thing can now be enabled/disabled with thing.set_enabled()
• ClientID for MQTT should now be unique for every HABApp installation
• Reworked MultiModeItem, now a default value is possible when no mode is active
• Added some type hints and updated documentation

1.0.2 (29.07.2022)

• Fixed setup issues
• Fixed unnecessary long tracebacks

1.0.1 (25.07.2022)

• Dockerfile is Python 3.10 and non slim

1.0.0 (25.07.2022)

• OpenHAB >= 3.3 and Python >= 3.8 only!
• Major internal refactoring
• Startup issues are gone with a new and improved connection mechanism.
• New configuration library: More settings can be configured in the configuration file. Config values are also described in the docs. Also better error messages (hopefully)
• Improved event log performance (BufferEventFile no longer needed and should be removed)
• Improved openhab performance (added some buffers)
• Improved mqtt performance
• Better tracebacks in case of error
• EventFilters can be logically combined ("and", "or") so rules trigger only once
• Label, Groups and Metadata is part of the OpenhabItem and can easily be accessed
• Added possibility to run arbitrary user code before the HABApp configuration is loaded
• Fixed setup issues
• Fixed some known bugs and introduced new ones ;-)
• Docker file changed to a multi stage build. Mount points changed to /habapp/config.

Migration to new version

self.listen_event now requires an instance of EventFilter.

Old:

from HABApp.core.events import ValueUpdateEvent
...
self.my_sensor = Item.get_item('my_sensor')
self.my_sensor.listen_event(self.movement, ValueUpdateEvent)

New:

from HABApp.core.events import ValueUpdateEventFilter
...
self.my_sensor = Item.get_item('my_sensor')
self.my_sensor.listen_event(self.movement, ValueUpdateEventFilter())   # <-- Instance of EventFilter

HABApp:
  ValueUpdateEvent -> ValueUpdateEventFilter()
  ValueChangeEvent -> ValueChangeEventFilter()

Openhab:
  ItemStateEvent        -> ItemStateEventFilter()
  ItemStateChangedEvent -> ItemStateChangedEventFilter()
  ItemCommandEvent      -> ItemCommandEventFilter()

MQTT:
  MqttValueUpdateEvent -> MqttValueUpdateEventFilter()
  MqttValueChangeEvent -> MqttValueChangeEventFilter()

Migration to new docker image

• change the mount point of the config from /config to /habapp/config
• The new image doesn't run as root. You can set USER_ID and GROUP_ID to the user you want habapp to run with. It's necessary to modify the permissions of the mounted folder accordingly.

---

0.31.2 (17.12.2021)

• Added command line switch to display debug information
• Display debug information on missing dependencies
• Added a small splash screen when HABApp is started
• May doc updates
• Reworked EventListenerGroup

0.31.1 (29.10.2021)

• Added support for item metadata
• Added possibility to search for items by metadata
• Added EventListenerGroup to subscribe/cancel multiple listeners at once

0.31.0 (08.10.2021)

• added self.get_items to easily search for items in a rule
• added full support for tags and groups on OpenhabItem
• Application should now properly shut down when there is a PermissionError
• Added DatetimeItem to docs
• Label in commandOption is optional
• Added message when file is removed
• Examples in the docs get checked with a newly created sphinx extension
• Reworked the openHAB tests

0.30.3 (17.06.2021)

• add support for custom ca cert for MQTT
• Scheduler runs only when the rule file has been loaded properly
• Sync openHAB calls raise an error when called from an async context
• Replaced thread check for asyncio with a contextvar (internal)

0.30.3 (01.06.2021)

• Scheduler runs only when the rule file has been loaded properly
• Replaced thread check for asyncio with a contextvar
• Sync openHAB calls raise an error when called from an async context

0.30.2 (26.05.2021)

• Item and Thing loading from openHAB is more robust and disconnects now properly if openHAB is only partly ready
• Renamed command line argument "-s" to "-wos" or "--wait_os_uptime"
• Updated dependencies

0.30.1 (07.05.2021)

• latitude is now set correctly for sunrise/sunset calculation (closes #217)
• Added missing " for tags in textual thing configuration
• Updated scheduler which fixes an overflow error(#216)
• States of openHAB groups are now unpacked correctly

0.30.0 (02.05.2021)

Attention:

• No more support for python 3.6!
• Migration of rules is needed!

Changelog

• Switched to Apache2.0 License
• Fix DateTime string parsing for OH 3.1 (#214)
• State of Groupitem gets set correctly
• About ~50% performance increase for async calls in rules
• Significantly less CPU usage when no functions are running
• Completely reworked the file handling (loading and dependency resolution)
• Completely reworked the Scheduler!
  • Has now subsecond accuracy (finally!)
  • Has a new .countdown() job which can simplify many rules. It is made for functions that do something after a certain period of time (e.g. switch a light off after movement)
• Added hsb_to_rgb, rgb_to_hsb functions which can be used in rules
• Better error message if configured foldes overlap with HABApp folders
• Renamed HABAppError to HABAppException
• Some Doc improvements

Migration of rules:

• Search for self.run_ and replace with self.run.
• Search for self.run.in and replace with self.run.at
• Search for .get_next_call() and replace with .get_next_run() (But make sure it's a scheduled job)
• Search for HABAppError and replace with HABAppException

0.20.2 (07.04.2021)

• Added HABApp.util.functions with min/max
• Reworked small parts of the file watcher
• Doc improvements
• Dependency updates