APM Error Property in Payload is Empty

Elastic Observability APM
1

Kibana version : 7.6.2

Elasticsearch version : 7.6.2

APM Server version : 7.6.2

APM Agent language and version : @elastic/apm-rum-angular 1.1.1. Angular 9.1.0

Browser version : Firefox 76.0b8

Original install method (e.g. download page, yum, deb, from source, etc.) and version : Used the Angular Integration instructions

I have an integration of the above on Angular, whenever a regular type error, or recursion error occurs, the JavaScript RUM agent works flawlessly and sends the error to APM.

However whenever an HTTP error occurs, for example sending a GET request to an endpoint that doesn't exists (404), the Payload error property shows up as empty. Is this normal ?

Screen Shot 2020-05-10 at 9.29.41 PM
Screen Shot 2020-05-10 at 9.29.41 PM1036×483 50.2 KB

Because of the above I created an Angular HTTP Interceptor and whenever an HTTP error occurs, manually call captureError to send an error to APM/Kibana. But this has it's own problems, it lacks several important indexes, such as the type of HTTP error. See this post.

Anyone know why this is happening?

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Hi Edgar,

The reason is 404 is a considered a valid response and the HTTP span inside the transaction would contain all the information related to the request (eg: status, url etc). RUM agent does not treat the failed network request as an error.

Let me know if you have any further questions.

Thanks,
Vignesh

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Hi @vigneshshanmugam, thanks for the reply. So what would be the best way to report this to APM as an indexable error? I think a 404 (or 500) response to an API request is an error that should appear in Kibana.

For example, is it possible to apm.addLabels() on a per error basis. Meaning that, for example, if I have a 504 error, this gets logged to APM with apm.captureError() and I add additional fields such as the HTTP error type, URL, etc. with apm.addLabels() that are indexable. But if for example I have a normal error, let's say infinite recursion or such, then that actually works gets logged by the RUM agent quite nicely so I don't need to do anything extra, but it shouldn't go with any additional labels added from apm.addLabels() like the HTTP error type.

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