Matrix - synapse

Add-ons Bindings
4

Even easier - use the HTTP Binding and JINJA transformation - no rules required.

All the prerequisites/caveats of the previous post still hold true, but everything can be configured via the UI if you desire. Simply, a String Item is linked to a String Channel in the HTTP Thing, and that String Channel uses a JINJA transformation to put the message into JSON required by the Matrix server.

Things file

//Matrix server
Thing http:url:matrix "Matrix" [
	baseURL = "https://YOURMATRIXDOMAIN/",
	refresh = "300",
	timeout ="3000",
	ignoreSSLErrors = "true",
	commandMethod = "POST"
]
{
	Channels:
		Type string: home "Home Room" [
			mode = "WRITEONLY",
			commandExtension = "_matrix/client/r0/rooms/YOURROOMID/send/m.room.message?access_token=YOURACCESSTOKEN",
			commandTransformation = "JINJA:{\"msgtype\":\"m.text\", \"body\":\"{{value}}\"}"
		]
}
OH3 UI YAML 
UID: http:url:matrix
label: Matrix
thingTypeUID: http:url
configuration:
  authMode: BASIC
  ignoreSSLErrors: "true"
  baseURL: https://YOURMATRIXDOMAIN/
  delay: 0
  stateMethod: GET
  refresh: "300"
  commandMethod: POST
  timeout: "3000"
  bufferSize: 2048
channels:
  - id: home
    channelTypeUID: http:string
    label: Home Room
    description: null
    configuration:
      mode: WRITEONLY
      commandExtension: _matrix/client/r0/rooms/YOURROOMID/send/m.room.message?access_token=YOURACCESSTOKEN
      commandTransformation: JINJA:{"msgtype":"m.text", "body":"{{value}}"}

Items file

String strMatrixMessageHomeRoom "Matrix message home room" {channel="http:url:matrix:home"}
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