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envknob: add new package for all the strconv.ParseBool(os.Getenv(..))

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A new package can also later record/report which knobs are checked and
set. It also makes the code cleaner & easier to grep for env knobs.

Change-Id: Id8a123ab7539f1fadbd27e0cbeac79c2e4f09751
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2022-01-24 10:52:57 -08:00
committed by Brad Fitzpatrick
parent 6feb8f4c51
commit 41fd4eab5c
39 changed files with 195 additions and 128 deletions
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4
ipn/localapi/cert.go
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@@ -29,12 +29,12 @@ import (
"net/http"
"os"
"path/filepath"
"strconv"
"strings"
"sync"
"time"
"golang.org/x/crypto/acme"
"tailscale.com/envknob"
"tailscale.com/ipn/ipnstate"
"tailscale.com/types/logger"
)
@@ -63,7 +63,7 @@ func (h *Handler) certDir() (string, error) {
return full, nil
}
var acmeDebug, _ = strconv.ParseBool(os.Getenv("TS_DEBUG_ACME"))
var acmeDebug = envknob.Bool("TS_DEBUG_ACME")
func (h *Handler) serveCert(w http.ResponseWriter, r *http.Request) {
if !h.PermitWrite {