Hello everyone,

We started exploring new scripting environment and currently trying to use Script Event Handlers instead of Set Point Event Handlers (Set To Scripted Value). We are be able to use the evt variable in global scripts with the code in below

function myHandler(evt) {
    var point = evt.context.point;
    var pointXid = evt.context.point.xid;
    var pointTags = point.tags;

But in the new Script Event Handler the evt variable returns a string. Is there a way to format evt variable into a proper object or do we need to do this in a different way in the new scripting environment?

Thanks,
Mert

Hello everyone,

In our app, some queries take around 12 seconds to download response data, therefore we want to reduce query times by querying for only necessary fields.
There is "fields" query parameter for "point-values/latest" API. Is there any similar way or a workaround to query fields for APIs in below:

http://[host]:[port]/rest/latest/events
http://[host]:[port]/rest/v3/data-points
http://[host]:[port]/rest/v3/realtime

Also if you have any advice about reducing query times I'd love to hear it.

@terrypacker thanks a lot, an example code is more than enough. I will look into the library in detail and see how to use it in the upcoming days.

Thanks once again!

@terrypacker I'm using Graal.js. Here is the script :

const HttpBuilder = Java.type('com.serotonin.m2m2.rt.script.HttpBuilderScriptUtility');

HttpBuilder.request({
        path: url,
	method: "POST",
	headers: {
               ContentType : "application/json",
               Authorization : "Basic "+token,
	},
	content: JSON.stringify({
               "type": 0,
               "message": "This is a test message"
        }),
	err: function(status, headers, content) { //errorCallback
		throw "Request got bad response: " + status + content;
	},
	resp: function(status, headers, content) { //responseCallback
	        console.log(content)
    	        return true;
	},
	excp: function(exception) { //exceptionCallback
		throw exception.getMessage();
	}
});

Hello,

I need to make an HTTP post request in a Script Event Handler. But I keep getting errors when using HttpBuilder.

At first I got the error: ReferenceError: HttpBuilder is not defined

Then I defined the HttpBuilder as :

const HttpBuilder = Java.type('com.serotonin.m2m2.rt.script.HttpBuilderScriptUtility');

Now I'm getting the error: TypeError: invokeMember (request) on com.serotonin.m2m2.rt.script.HttpBuilderScriptUtility failed due to: Unknown identifier: request

What am I missing here?

I figured out how to do it by using java class methods in ma-core-public.

const DataSourceDao = Java.type('com.serotonin.m2m2.db.dao.DataSourceDao');

function myHandler(evt) {
    var point = evt.getContext().context.get("point");
    var pointXid = point.getXid();
    var pointTags = point.getTags();

    var dataSourceXid = point.getDataSourceXid();
    var ip = DataSourceDao.getInstance().getByXid(dataSourceXid).getHost();

Hello everyone,

We started exploring new scripting environment and currently trying to use Script Event Handlers instead of Set Point Event Handlers (Set To Scripted Value). We are be able to use the evt variable in global scripts with the code in below

function myHandler(evt) {
    var point = evt.context.point;
    var pointXid = evt.context.point.xid;
    var pointTags = point.tags;

But in the new Script Event Handler the evt variable returns a string. Is there a way to format evt variable into a proper object or do we need to do this in a different way in the new scripting environment?

Thanks,
Mert