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feature/featuretags: add a catch-all "Debug" feature flag

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Updates #12614

Change-Id: Iaab3ae3efc6ddc7da39629ef13e5ec44976952ba
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2025-09-30 09:53:55 -07:00
committed by Brad Fitzpatrick
parent bbb16e4e72
commit ee034d48fc
15 changed files with 573 additions and 455 deletions
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ipn/ipnlocal/c2n.go
+22
View File
@@ -15,6 +15,8 @@ import (
"time"
"tailscale.com/control/controlclient"
"tailscale.com/feature"
"tailscale.com/feature/buildfeatures"
"tailscale.com/ipn"
"tailscale.com/net/sockstats"
"tailscale.com/tailcfg"
@@ -130,6 +132,10 @@ func handleC2NLogtailFlush(b *LocalBackend, w http.ResponseWriter, r *http.Reque
}
func handleC2NDebugNetMap(b *LocalBackend, w http.ResponseWriter, r *http.Request) {
if !buildfeatures.HasDebug {
http.Error(w, feature.ErrUnavailable.Error(), http.StatusNotImplemented)
return
}
ctx := r.Context()
if r.Method != httpm.POST && r.Method != httpm.GET {
http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
@@ -190,20 +196,36 @@ func handleC2NDebugNetMap(b *LocalBackend, w http.ResponseWriter, r *http.Reques
}
func handleC2NDebugGoroutines(_ *LocalBackend, w http.ResponseWriter, r *http.Request) {
if !buildfeatures.HasDebug {
http.Error(w, feature.ErrUnavailable.Error(), http.StatusNotImplemented)
return
}
w.Header().Set("Content-Type", "text/plain")
w.Write(goroutines.ScrubbedGoroutineDump(true))
}
func handleC2NDebugPrefs(b *LocalBackend, w http.ResponseWriter, r *http.Request) {
if !buildfeatures.HasDebug {
http.Error(w, feature.ErrUnavailable.Error(), http.StatusNotImplemented)
return
}
writeJSON(w, b.Prefs())
}
func handleC2NDebugMetrics(_ *LocalBackend, w http.ResponseWriter, r *http.Request) {
if !buildfeatures.HasDebug {
http.Error(w, feature.ErrUnavailable.Error(), http.StatusNotImplemented)
return
}
w.Header().Set("Content-Type", "text/plain")
clientmetric.WritePrometheusExpositionFormat(w)
}
func handleC2NDebugComponentLogging(b *LocalBackend, w http.ResponseWriter, r *http.Request) {
if !buildfeatures.HasDebug {
http.Error(w, feature.ErrUnavailable.Error(), http.StatusNotImplemented)
return
}
component := r.FormValue("component")
secs, _ := strconv.Atoi(r.FormValue("secs"))
if secs == 0 {