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tsweb: register expvars once at startup.

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Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson 2021-06-15 21:27:54 -07:00
parent 9337826011
commit 72343fbbec
1 changed files with 5 additions and 2 deletions
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7
tsweb/tsweb.go
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@ -29,6 +29,11 @@
"tailscale.com/types/logger" "tailscale.com/types/logger"
) )
func init() {
expvar.Publish("counter_uptime_sec", expvar.Func(func() interface{} { return int64(Uptime().Seconds()) }))
expvar.Publish("gauge_goroutines", expvar.Func(func() interface{} { return runtime.NumGoroutine() }))
}
// DevMode controls whether extra output in shown, for when the binary is being run in dev mode. // DevMode controls whether extra output in shown, for when the binary is being run in dev mode.
var DevMode bool var DevMode bool
@ -41,8 +46,6 @@ func NewMux(debugHandler http.Handler) *http.ServeMux {
} }
func registerCommonDebug(mux *http.ServeMux) { func registerCommonDebug(mux *http.ServeMux) {
expvar.Publish("counter_uptime_sec", expvar.Func(func() interface{} { return int64(Uptime().Seconds()) }))
expvar.Publish("gauge_goroutines", expvar.Func(func() interface{} { return runtime.NumGoroutine() }))
mux.Handle("/debug/pprof/", Protected(http.DefaultServeMux)) // to net/http/pprof mux.Handle("/debug/pprof/", Protected(http.DefaultServeMux)) // to net/http/pprof
mux.Handle("/debug/vars", Protected(http.DefaultServeMux)) // to expvar mux.Handle("/debug/vars", Protected(http.DefaultServeMux)) // to expvar
mux.Handle("/debug/varz", Protected(http.HandlerFunc(VarzHandler))) mux.Handle("/debug/varz", Protected(http.HandlerFunc(VarzHandler)))