JSON.stringify() on requestBody in pre-execution script of HTTP monitor ?

[iromaniuk]

I am using request.setBody(requestBody) , but getting Bad request response code 400. I can see [object Object] in the synthetic.0.0.log when logging RequestBody

2020-11-03 16:48:11 UTC WARNING [<collector>] [<collector.core>, LogEntryService] Http-Executor-0 [CommonApiController] [HTTP_CHECK-A12AC65899713EC, HTTP_CHECK_STEP-CC3B186211915B8C] RequestBody: [object Object]

See the code below. Should I JSON.stringify() on requestBody , what's wrong here ?

var currSessions=api.randomNextInt();
api.warn("CurrSessions: " + currSessions);
var timestampNow = api.date();
api.warn("Timestamp: " + timestampNow);
var requestBody={
    "type": "LB",
    "series": [
        {
            "timeseriesId": "custom:alteon.CurrSessions",
            "dimensions": {
                "CUSTOM_DEVICE": "Load Balancers"
            },
            "dataPoints": [
                [
                    timestampNow,
                    currSessions
                ]
            ]
        }
    ]
};
api.warn("RequestBody: " + requestBody);
request.setBody(requestBody);

[leon_vanzyl]

Hi, @iromaniuk  did you ever figure this out? I was escaping the characters but still no joy

[leon_vanzyl · Accepted solution]

Ok, I resolved this by using Postman, it has handy code functionality that will escape the value of the JSON request body for you. Recreate the request in postman then select code by clicking on the code link under the send button.

Just select javascript - Fetch on the "generate code snippets" page. This will escape your raw Json nicely 😉