Anton Tolchanov 8546ff98fb tsweb: move varz handler(s) into separate modules ...

This splits Prometheus metric handlers exposed by tsweb into two
modules:
- `varz.Handler` exposes Prometheus metrics generated by our expvar
  converter;
- `promvarz.Handler` combines our expvar-converted metrics and native
  Prometheus metrics.

By default, tsweb will use the promvarz handler, however users can keep
using only the expvar converter. Specifically, `tailscaled` now uses
`varz.Handler` explicitly, which avoids a dependency on the
(heavyweight) Prometheus client.

Updates https://github.com/tailscale/corp/issues/10205

Signed-off-by: Anton Tolchanov <anton@tailscale.com>

2023-04-11 08:37:32 +01:00

..

varz_test.go

tsweb: move varz handler(s) into separate modules

2023-04-11 08:37:32 +01:00

varz.go

tsweb: move varz handler(s) into separate modules

2023-04-11 08:37:32 +01:00