Commit Graph

25 Commits

Author SHA1 Message Date
Josh Bleecher Snyder 516e8a4838 tsweb: add num_goroutines expvar
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-01 14:38:59 -08:00
David Anderson 692a011b54 net/interfaces: remove IsTailscaleIP, make callers use tsaddr.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-26 15:10:51 -08:00
Brad Fitzpatrick 017dcd520f tsweb: export VarzHandler 2021-01-14 11:49:44 -08:00
David Anderson 57cd7738c2 tsweb: add an endpoint to manually trigger a GC.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-12-08 16:49:42 -08:00
Josh Bleecher Snyder 3b46655dbb tsweb: add StatusCodeCounters to HandlerOptions
This lets servers using tsweb register expvars
that will track the number of requests ending
in 200s/300s/400s/500s.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2020-10-30 11:07:57 -07:00
Josh Bleecher Snyder e98f2c57d6 tsweb: add StdHandlerOpts that accepts an options struct
I'm about to add yet another StdHandler option.
Time to refactor.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2020-10-30 11:07:57 -07:00
David Crawshaw 815bf017fc tsweb: when unwrapping HTTPError, record the user-facing message also in the log
There's often some useful piece of information in there not already
repeated in the internal error.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2020-09-17 10:12:48 -04:00
David Anderson eccae0cd0c tsweb: add ReturnHandlerFunc.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-04-22 15:34:28 -07:00
Brad Fitzpatrick 64334143a1 tsweb: rename Handler to ReturnHandler
The name's been bugging me for a long time.

I liked neither the overlap between tsweb.Handler and http.Handler,
nor the name "ServeHTTPErr" which sounds like it's an error being
returned, like it's an error handler and not sometimes a happy path.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-04-05 13:16:36 -07:00
David Anderson af3a9dfad6 tsweb: add a StdHandler that doesn't log 200 responses.
Signed-off-by: David Anderson <dave@natulte.net>
2020-04-05 00:14:38 -07:00
Brad Fitzpatrick 2863e49db9 tsweb: don't flush, treat no-op Handler as 200, like Go
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-04-04 16:11:53 -07:00
David Anderson 2c2dff9559 tsweb: don't panic if we get a tsweb.Error with no embedded error.
It's technically weird to return a tsweb.Error with no child err,
but it's a sensible thing to want to do, and we shouldn't panic
if it happens.

Signed-off-by: David Anderson <dave@natulte.net>
2020-04-03 10:36:21 -07:00
David Anderson 12a6626a94 tsweb: use a ResponseWriter wrapper to log more accurately.
Also adds tests, because the logging handler is acquiring a fair
number of branches.

Signed-off-by: David Anderson <dave@natulte.net>
2020-03-19 20:11:07 -07:00
Brad Fitzpatrick 6de37f4cc0 tsweb: move some comments, add a TODO 2020-03-18 09:54:48 -07:00
David Anderson df4636567f tsweb: adjust names and docs of the "handler with errors" functions.
Signed-off-by: David Anderson <dave@natulte.net>
2020-03-18 01:39:01 -07:00
David Anderson 98eceae55e tsweb: add a Handler type.
Handler is like http.Handler, but returns errors. ErrHandler
converts back to an http.Handler, with added error handling
and logging.

Signed-off-by: David Anderson <dave@natulte.net>
2020-03-17 21:34:44 -07:00
Brad Fitzpatrick 5c1e443d34 wgengine/monitor: don't call LinkChange when interfaces look unchanged
Basically, don't trust the OS-level link monitor to only tell you
interesting things. Sanity check it.

Also, move the interfaces package into the net directory now that we
have it.
2020-03-10 11:03:19 -07:00
Brad Fitzpatrick a9cd8f31de tsweb: don't double import expvar; appease staticcheck 2020-03-06 13:08:32 -08:00
Brad Fitzpatrick 890f5dff40 tsweb: export runtime.MemStats var in Prometheus format 2020-03-06 13:02:01 -08:00
Brad Fitzpatrick 61f3fda405 tsweb: let expvar.Ints be gauges too 2020-03-05 15:10:01 -08:00
Brad Fitzpatrick 57de94c7aa tsweb: add /debug/ access via &debugkey + TS_DEBUG_KEY_PATH 2020-03-04 13:49:30 -08:00
David Anderson d580157921 tsweb: quote label values to comply with Prometheus format. 2020-03-04 13:46:00 -08:00
David Anderson f192c05413 metrics: add a LabelMap type for variables with 1 label dimension.
This lets us publish sets of vars that are breakdowns along one
dimension in a format that Prometheus and Grafana natively know
how to do useful things with.

Signed-off-by: David Anderson <dave@natulte.net>
2020-03-04 13:22:50 -08:00
Brad Fitzpatrick e371520cc5 tsweb, derp: add expvar http.Handler for Prometheus's format
And add some opinions.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-03-03 13:59:16 -08:00
Brad Fitzpatrick 824f825552 tsweb, cmd/derper: move common web/debug stuff from derper to new tsweb
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-02-25 10:06:56 -08:00