Create a monitor that fails if a specific field contains null

Kevin4 — Tue, 07 Feb 2023 10:32:42 GMT

Hi, this is probably a basic question but I am new to Dynatrace. I have an endpoint that is returning a 200 when 2 required fields are null. We are not yet sure where the bug in the code is but want to monitor the rare exception this happens. The JSON response is similar to:

{

"requiredOne" : null,

"requiredTwo" : null

}

Will this be as simple as setting the two rules below?

pass if 200

fails if contains text "requiredOne" : null

or should I use regex? Thank you for any suggestions.

Re: Create a monitor that fails if a specific field contains null.

MichalOlszewski — Tue, 07 Feb 2023 05:12:48 GMT

Hi @Kevin4

I'm assuming that You are Client side of this communication. Then Yes You can create monitor tracking those fields - I would personally go regexp as You can do it all in one go and still should be relatively simple.
IF You have access to Server-Side of this communication then I would recommend creating RequestAttributes that captures those values before sending them - this way You would be able to use multidimensional analysis to narrow down cases where those double null happens. Making this capturing from real traffic at the same time will allow You to find all potential reasons behind them.

topic Create a monitor that fails if a specific field contains null in Synthetic Monitoring

Create a monitor that fails if a specific field contains null

Re: Create a monitor that fails if a specific field contains null.