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client/web: add metric for exit node advertising (#9781)

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* client/web: add metric for exit node advertising

Updates tailscale/corp#15215

Signed-off-by: Naman Sood <mail@nsood.in>

* client/web: use http request's context for IncrementCounter

Updates #cleanup

Signed-off-by: Naman Sood <mail@nsood.in>

---------

Signed-off-by: Naman Sood <mail@nsood.in>
This commit is contained in:
Naman Sood 2023-10-12 17:02:20 -04:00 committed by GitHub
parent ce0830837d
commit 7783a960e8
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1 changed files with 22 additions and 3 deletions
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25
client/web/web.go
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@ -66,6 +66,11 @@ const (
sessionCookieExpiry = time.Hour * 24 * 30 // 30 days
)
var (
exitNodeRouteV4 = netip.MustParsePrefix("0.0.0.0/0")
exitNodeRouteV6 = netip.MustParsePrefix("::/0")
)
// browserSession holds data about a user's browser session
// on the full management web client.
type browserSession struct {
@ -189,7 +194,7 @@ func (s *Server) serve(w http.ResponseWriter, r *http.Request) {
return
}
if !s.devMode {
s.lc.IncrementCounter(context.Background(), "web_client_page_load", 1)
s.lc.IncrementCounter(r.Context(), "web_client_page_load", 1)
}
s.assetsHandler.ServeHTTP(w, r)
}
@ -427,8 +432,6 @@ func (s *Server) serveGetNodeData(w http.ResponseWriter, r *http.Request) {
IPNVersion: versionShort,
DebugMode: s.tsDebugMode,
}
exitNodeRouteV4 := netip.MustParsePrefix("0.0.0.0/0")
exitNodeRouteV6 := netip.MustParsePrefix("::/0")
for _, r := range prefs.AdvertiseRoutes {
if r == exitNodeRouteV4 || r == exitNodeRouteV6 {
data.AdvertiseExitNode = true
@ -473,6 +476,22 @@ func (s *Server) servePostNodeUpdate(w http.ResponseWriter, r *http.Request) {
return
}
prefs, err := s.lc.GetPrefs(r.Context())
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
isCurrentlyExitNode := slices.Contains(prefs.AdvertiseRoutes, exitNodeRouteV4) || slices.Contains(prefs.AdvertiseRoutes, exitNodeRouteV6)
if postData.AdvertiseExitNode != isCurrentlyExitNode {
if postData.AdvertiseExitNode {
s.lc.IncrementCounter(r.Context(), "web_client_advertise_exitnode_enable", 1)
} else {
s.lc.IncrementCounter(r.Context(), "web_client_advertise_exitnode_disable", 1)
}
}
routes, err := netutil.CalcAdvertiseRoutes(postData.AdvertiseRoutes, postData.AdvertiseExitNode)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)