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envknob: support changing envknobs post-init

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Updates #5114

Change-Id: Ia423fc7486e1b3f3180a26308278be0086fae49b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2022-09-14 12:49:39 -07:00
committed by Brad Fitzpatrick
parent 33ee2c058e
commit 74674b110d
31 changed files with 311 additions and 167 deletions
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4
ipn/localapi/cert.go
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@ -73,7 +73,7 @@ func (h *Handler) certDir() (string, error) {
return full, nil
}
var acmeDebug = envknob.Bool("TS_DEBUG_ACME")
var acmeDebug = envknob.RegisterBool("TS_DEBUG_ACME")
func (h *Handler) serveCert(w http.ResponseWriter, r *http.Request) {
if !h.PermitWrite && !h.PermitCert {
@ -96,7 +96,7 @@ func (h *Handler) serveCert(w http.ResponseWriter, r *http.Request) {
now := time.Now()
logf := logger.WithPrefix(h.logf, fmt.Sprintf("cert(%q): ", domain))
traceACME := func(v any) {
if !acmeDebug {
if !acmeDebug() {
return
}
j, _ := json.MarshalIndent(v, "", "\t")