Can you string replace in Virtual Parameters?

1

Here is some of the partial code from a Virtual Parameter:

  let sig = declare("InternetGatewayDevice.WANDevice.1.X_3GPP_LTEInterfaceConfig.RadioModule.DownlinkStdDevRSRP", {value: now}).value[0];
  let tul = declare("InternetGatewayDevice.WANDevice.1.X_3GPP_LTEInterfaceConfig.RadioModule.UplinkMCS", {value: now}).value[0];
  let tdl = declare("InternetGatewayDevice.WANDevice.1.X_3GPP_LTEInterfaceConfig.RadioModule.DownlinkMCS", {value: now}).value[0];
  signal = sig+" ["+tul+"/"+tdl+"]";
  signal = signal.replace("QAM", ""); <----THIS DOESN"T WORK

From the above code I get this from signal:
-84.80/-108.50/-104.00/-86.00 [QAM16(23)/QAM64(28)]

To save screen space on index page, I want to remove at least QAM from it, to look like this:
-84.80/-108.50/-104.00/-86.00 [16(23)/64(28)]

Can this be done in Virtual Parameters?

2

Your issue is probably further down in your vparam. The text concat works fine. Paste the full contents of your vparam if you’d like further assistance.

3

This is the part that doesn’t work. If I have this in the vparam TITAN area, it doesn’t return anything for TITAN case.

Here is the whole thing, in it’s working form, without the replace part:

const now = Date.now();
let productClass = declare("DeviceID.ProductClass", {value: 1}).value[0];
let signal = "";

switch(productClass) {
  case "TITAN4000":
  let sig = declare("InternetGatewayDevice.WANDevice.1.X_3GPP_LTEInterfaceConfig.RadioModule.DownlinkStdDevRSRP", {value: now}).value[0];
  let tul = declare("InternetGatewayDevice.WANDevice.1.X_3GPP_LTEInterfaceConfig.RadioModule.UplinkMCS", {value: now}).value[0];
  let tdl = declare("InternetGatewayDevice.WANDevice.1.X_3GPP_LTEInterfaceConfig.RadioModule.DownlinkMCS", {value: now}).value[0];
  signal = sig+" ["+tul+"/"+tdl+"]";
    break;
  default:
  let bsa = declare("InternetGatewayDevice.WEB_GUI.Network.LTE_Setting.Status.RSRP0", {value: now}).value[0];
  let bsb = declare("InternetGatewayDevice.WEB_GUI.Network.LTE_Setting.Status.RSRP1", {value: now}).value[0];
  let bul = declare("InternetGatewayDevice.WEB_GUI.Network.LTE_Setting.Status.UL_Mcs", {value: now}).value[0];
  let bdl = declare("InternetGatewayDevice.WEB_GUI.Network.LTE_Setting.Status.DL_Mcs", {value: now}).value[0];
 signal = bsa+"/"+bsb+" ["+bul+"/"+bdl+"]";
} 
log(productClass+" signal="+signal);
return {writable: false, value: [signal, "xsd:string"]};

In the TITAN case area, I want to return the signal with the QAM text removed.

4

.replace(‘QAM’, ‘’) replaces the first instance of QAM. You need a global regex to replace QAM everywhere. Try this:

signal = `${sig} [${tul}/${tdl}]`.replace(/QAM/g, '');

The backtick ` tells the JavaScript engine to use string interpolation instead of string concatenation. To me, this makes things look cleaner.

Here is some code to demonstrate the issue and the solution:

let sig = '-84.80/-108.50/-104.00/-86.00';
let tul = 'QAM16(23)';
let tdl = 'QAM64(28)';
let signal = `${sig} [${tul}/${tdl}]`;
console.log('Initial:        ' + signal);
console.log('Simple replace: ' + signal.replace('QAM', ''));
console.log('Global regex:   ' + signal.replace(/QAM/g, ''));

Initial:        -84.80/-108.50/-104.00/-86.00 [QAM16(23)/QAM64(28)]
Simple replace: -84.80/-108.50/-104.00/-86.00 [16(23)/QAM64(28)]
Global regex:   -84.80/-108.50/-104.00/-86.00 [16(23)/64(28)]
2 Likes
5

That works great! Thanks a bunch for the help and the code cleanup, it does look better and and easier to understand that way.

With what you showed me, I ended up adding a bit more regex to it:

signal = `${sig} [${tul}/${tdl}]`.replace(/-|\.\d\d|QAM\d*\(|QPSK\d*\(|\)/g, '');

That removes all different things QAM could be, and gets rid of junk I didn’t want on the index page.
from:
-84.80/-108.50/-104.00/-86.00 [QAM16(23)/QAM64(28)]
to:
84/108/104/86 [23/28]

That save a bunch of screen space!

6

Ciao may you drive me where I can read the log printed into vparam code?
I have tryied log(…); and console.log(…); it does not return error, but I do not know where the output goes
in genieacs-cwmp-access.log I’m able to see the log(…); sent from provisioning script but I guess there is way also to catch from vparam.
sorry for the dum question.

7

Please create your own thread instead of resurrecting an 18 month old thread.