Charles metrics in Prometheus don't have x-circle-source

[apucci]

Describe the bug
When the Prometheus read metrics exposed by Istio, the label x-circle-source is not present, the problem may be Istio generating telemetry data before passing by Envoy, so that, the envoy virtual host still hasn't put the header x-circle-source in the request.

To Reproduce

1. Do a request in an application that was deployed by Charles;
2. Look in Prometheus the presence of the x-circle-source in the metric istio_charles_requests_total;
3. See that the header is not being set.

Expected behavior
The header must be set before telemetry data is generated.

Your Environment

• CharlesCD version used: 0.2.12

[apucci]

Virtual Service não está setando x-circle-source