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Plugin definitions expose some basic details to Domoticz and a list of the parameters that users can configure. Some example Python scripts can be found in the domoticz/plugins/examples directory. For the example below the Kodi plugin would be in a file domoticz/plugins/Kodi/plugin.py.

When the Hardware page is loaded the plugins defined in the index are merged into the list of available hardware and are indistinguishable from natively supported hardware. This is done by having the plugins live in a set location so they can be found and via an XML definition embedded in the Python script itself that describes the parameters that the plugin requires.ĭuring Domoticz startup all directories directly under the 'plugins' directory are scanned for python files named plugin.py and those that contain definitions are indexed by Domoticz.

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To allow plugins to be added without the need for code changes to Domoticz itself requires that the plugins be exposed to Domoticz in a generic fashion. If you are writing a Python plugin from scratch, you may want to begin by using the Script Template in domoticz/plugins/examples/BaseTemplate.py, which is also available from the github source repo at Plugin Definition Runtime Structure - Interfaces and APIs to manage message flows between Domoticz and the hardware.Plugin Definition - Telling Domoticz about the plugin.The plugin documentation is split into two distinct parts:

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YOU HAVE BEEN WARNED !Īn example of a multi-threaded plugin including how to show running threads and thread shutdown can be found here on Github Overall Structure The Plugin Framework cannot enumerate threads started by the plugin or stop them (Python limitation) and any active threads when the plugin interpreter is destroyed will cause Python to abort. Failure to do this will result in Python aborting Domoticz during hardware 'Stops' &/or 'Updates'.

All threads started within the plugin (either directly or by imported modules) must be terminated by the plugin prior to the plugin stopping ('onStop' is the recommended place for this).

Use of asynchronous code or modules and callback functions are now supported.

The Python Framework has been uplifted to support multi-threaded plugins, key points: Plugin callbacks are single threaded so the whole plugin system will wait.

Waiting or sleepingin Domoticz callbacks.

The following things should not be attempted using the Python Framework:

Plugins are not restricted to 256 Units (each Device can have 256 Units).

Creates a two layer mapping over the DeviceStatus table of Devices and Units.

Invoked by importing 'DomoticzEx' into the plugin.

Built on Legacy Framework but has a new object model and event localisation.

Legacy Framework: This has been stable for several years, invoked by importing 'Domoticz' into the plugin.

There are current two variations of the Plugin Framework available, plugin authors can use either but not both at the same time: Multiple copies of the same plugin can run for users that have more than one instance of a particular hardware type. The plugin is called by Domoticz when relevant events occur so that it can manage connectivity to the hardware and state synchronisation.

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The Framework provides the plugin with a full Python 3 instance that exists for as long as Domoticz is running. To that end it provides capabilities that seek to do the hard work for the developer leaving them to manage the messages that move backwards and forwards between the two. It is designed to allow developers to easily create an interface between a piece of Hardware (or Virtual Hardware) and Domoticz. The Domoticz Python Framework is not a general purpose Domoticz extension. To see the Plugins already developed (for a reference) got to page Plugins. If you simply want to use a plugin that a developer has already created for you, please see Using Python plugins. This page is aimed at developers wishing to improve Domoticz functionality via Python Plugins. 8.2 Connect your page to Domoticz UI core.1.2 Sleeping and multi-threading details:.