Is there a way to add a token to HTTP JSON Retriever DS?

[phildunlap]

Hi psysak, welcome back! So soon! :P

It is not currently available, but it is a really good idea to allow some static headers to be configured, as the publisher does.

You could achieve this using the HttpBuilder from a scripting data source, though. Perhaps as in this thread: https://forum.infiniteautomation.com/topic/3031/pulling-multiple-parameters-from-a-single-json-result

[MattFox]

This post is deleted!

[psysak]

OK laaast question :)

I've created this in a scripting source

function getRequest(_id, serial) {
    // This portion is the part which actually retreives the data from api
    HttpBuilder.get("https://thisisadomain/api/v2/sensors/" + _id + "/analyses/timeseries?dateRequest=dtd&units=l&resolution=h", headers, parameters).err(function(status, headers, content) {
      throw "Script failed with HTTP status: " + status;
    }).resp(function(status, headers, content) { 
       // Needs to be 200 status or you can set the accepted statuses
       // If all is well then call the parsing function and pass the JSON to it
       //print(content);
       match = RegExp(regex).exec(content);
       //print(match[1]);
       serial.set(match[1]);
    }).execute();
}

Ignoring that there is clearly other parts missing which I didn't paste here, my question revolves around the line

serial.set();

I should have known that doesn't work because serial is not a variable name, but I want to someone use serial to point to the correct variable in the data source. Basically, I am passing a serial and id number to this function which calls an api passing the id to it which in turn returns a value, I regex that value and want to set a variable with the "Variable Name" of serial. I have created these variables in the DS prior to this. How do I get that reference to the point so I can run set on it?

[MattFox]

My suggestion would be to chain it.
have it return that value and use that as the context point to fire the next part in the function. return alphanumeric as a json string and parse with new part of your script. take the parsed values to get your datapoint and set accordingly.
EDIT, you may have to do this with a meta point source...
Oh I see.... you're losing the value in the callback. I wonder if you can use bind().
set your callback as a separate function and bind serial to it... I've not got a lot of time to test and help right now,,,
EDIT 2:

OK i've gone back and had a tinker. Think I will need more info Psysak,,,

 function httpReq(url,method,callback,headers,params,serial)
{//Second format, full request
    if(headers===undefined){headers={};}
    if(params===undefined){params={};}
   // callback.bind(serial);
    if(method=="get")
    {
    HttpBuilder.get(url,headers,params)
	.err(function(status, headers, content) { //setErrorCallback for linguistic completion
		 
	}).resp( 
	    
	// callback
	function(status, headers, content) { //setResponseCallback
			print(content);//
		
	}  ).excp(function(exception) { //setExceptionCallback
		throw exception.getMessage();
	}).execute();
    }
    else
    {
         HttpBuilder.post(url,headers,params)
	.err(function(status, headers, content) { //setErrorCallback for linguistic completion
		  //setErrorCallback for linguistic completion
            	print(status);	print(content);
	}).resp( 
	 //callback
	function(status, headers, content) { //setResponseCallback
			print(content);//	print(status);
			print(serial);
	}  ).excp(function(exception) { //setExceptionCallback
		throw exception.getMessage();
	}).execute();
    }
}

I can't replicate your issue. and am still able to print the serial. however, serial is a context point (different name). that' i've injected as a parameter,. Shouldn't make a difference though.

[psysak]

Hey @MattFox thanks for the response.

Hmm. So what I'm doing is trying to substitute serial with a string from the api call, and that string is supposed to be the same name as the "Variable Name" of a point I created in that scripting DS. I noticed that if I hard code a value of serial so for example

serial = 123456789;

Where 123456789 is an existing data point with that Variable Name, if I print serial it is an object. So I assume the issue is that I get a string back from the API and then I'm trying to substitute that for serial and call .set() on it. This is not a reference to the data point right?

[psysak]

So I dug around in the forum a bit and for now I think I'm going to do a pointquery for the xid and then set from there :)

[phildunlap]

It's not clear to me what serial was because it's only an argument in a function in the code you presented, which could be anything. If it was a variable storing a string that was the variable name of something in context, you could do

this[serial]

to access the context point.

[psysak]

Sorry @phildunlap you're right I missed details. Yes it was just a string which stores the variable name of a context object.
So can you set on a this[serial]? I'll try it later

[phildunlap]

You should be able to. this[serial] would be a reference to a context point wrapper, so it would function like the context point (AbstractPointWrapper object) when referred to directly. CONTEXT_POINTS[serial] would then be the DataPointRT object.

[psysak]

Works like a charm.