Commit Graph

2 Commits (4e72992900b37b36c47252d08113c5404faacbb5)

Author SHA1 Message Date
Brad Fitzpatrick 79ee6d6e1e tsweb/varz: use default metrics.LabelMap.Label on serialization
To not break Prometheus if the label is unset.

Updates tailscale/corp#12830

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
1 year ago
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>
2 years ago