About

Warning

This package is under active development. I believe it is ready for "bleeding edge" use, but its API may have to change, based on findings and bugs. Please use with caution.

dbus-victron-virtual is a wrapper around dbus-native, which allows you to connect to dbus, and simplify integrating with the Victron infrastructure: To do this, dbus-victron-virtual provides functions to

• expose your dbus interface as a Victron service, by implementing the dbus interface com.victronenergy.BusItem,
• emit the Victron-specific event ItemsChanged, and
• define and modify settings which are then available through Victron's settings interface.

See dbus-victron-virtual in action here.

This package may be for you if

• you want to define virtual devices for testing on a Victron device, like a Victron Cerbo GX, e.g. to use it in Node-RED, or
• you need to integrate a device via dbus that is not (yet) supported by Victron natively.

Usage

Prerequisites

You have a NodeJS project you want to run on Venus OS, and you want to communicate with the local dbus.

Setup Up

• Add this package as a dependency: npm add dbus-victron-virtual.
• Use this package, by importing or requiring it: const { addVictronInterfaces } = require('dbus-victron-virtual');
• Make sure you understand how to use this package by studying the example.
• Have fun.

Development

Prerequisites

You can develop on a device that runs Venus OS. This way, the dbus environment as required by this package will be available. Alternatively, you can develop in any environment that support node 18 or higher, but you won't be able to run integration tests.

Steps

• clone the repository
• npm install

The implementation is in ./src/index.js, tests are in ./src/__tests__.

Testing

• npm run test
• run tests and include running integration tests with DBUS_SESSION_BUS_ADDRESS=unix:socket=/var/run/dbus/system_bus_socket TEST_INTEGRATION=1 npm run test

To run only the integration tests, use jest's -t option, and specify which host/port to use (if running remotely):

DBUS_ADDRESS='tcp:host=venus.local,port=78' TEST_INTEGRATION=1 npm run test -- -t 'integration'

Test coverage stats for unit and integration tests (append -- --coverage to the test command):

Test Coverage

Coverage as per v0.1.33:

----------|---------|----------|---------|---------|---------------------------------------------------------------------------------

File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
All files	91.59	85.81	86.56	91.54
index.js	91.59	85.81	86.56	91.54	266,290,301,346-377,411-414,418-422,461,619-622,678,692-695,750,755-758,832-834
----------	---------	----------	---------	---------	---------------------------------------------------------------------------------