tailscale/ipn/ipnlocal/c2n.go
Brad Fitzpatrick 9bdf0cd8cd ipn/ipnlocal: add c2n /debug/{goroutines,prefs,metrics}
* and move goroutine scrubbing code to its own package for reuse
* bump capver to 45

Change-Id: I9b4dfa5af44d2ecada6cc044cd1b5674ee427575
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-26 11:16:38 -07:00

53 lines
1.3 KiB
Go

// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipnlocal
import (
"encoding/json"
"io"
"net/http"
"tailscale.com/tailcfg"
"tailscale.com/util/clientmetric"
"tailscale.com/util/goroutines"
)
func (b *LocalBackend) handleC2N(w http.ResponseWriter, r *http.Request) {
writeJSON := func(v any) {
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(v)
}
switch r.URL.Path {
case "/echo":
// Test handler.
body, _ := io.ReadAll(r.Body)
w.Write(body)
case "/debug/goroutines":
w.Header().Set("Content-Type", "text/plain")
w.Write(goroutines.ScrubbedGoroutineDump())
case "/debug/prefs":
writeJSON(b.Prefs())
case "/debug/metrics":
w.Header().Set("Content-Type", "text/plain")
clientmetric.WritePrometheusExpositionFormat(w)
case "/ssh/usernames":
var req tailcfg.C2NSSHUsernamesRequest
if r.Method == "POST" {
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
}
res, err := b.getSSHUsernames(&req)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
writeJSON(res)
default:
http.Error(w, "unknown c2n path", http.StatusBadRequest)
}
}