observer-pattern

Description

This is an example of $SYSTEM.Event usage.

A DC article is availalbe in FR here and EN soon.

Installation

Clone/git pull the repo into any local directory

$ git clone https://github.com/lscalese/iris-ipc-utils.git

$ docker-compose up -d

Usage

With a listener

Open a terminal a start to listen the event “Demo”

IRISAPP>Do ##class(dc.ipcutils.BasicListener).%New().Listen()

Open a second terminal to send a notification :

Do ##class(dc.ipcutils.Manager).Notify("Demo:OnTest",{"Message":"My FirstTest"}.%ToJSON())

Now you see the result in the first terminal:

IRISAPP>Do ##class(dc.observer.BasicListener).%New().Listen()

2023-09-27 20:43:46 + Listening Demo with resourcename ODYzMjAxNTAwNTAwMQ started.
2023-09-27 20:43:46 + Type < ctrl+c > to stop listening.
2023-09-27 20:45:58 = Event received: 
{
  "Event":"Demo:OnTest",
  "EventType":"Demo",
  "EventName":"OnTest",
  "PIDSource":"710",
  "Timestamp":"2023-09-27 20:45:58",
  "Context":{
  },
  "Data":"{\"Message\":\"My FirstTest\"}"
}