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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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6
portlist/portlist.go
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@@ -6,10 +6,10 @@ package portlist
import (
"fmt"
"os"
"sort"
"strconv"
"strings"
"tailscale.com/envknob"
)
// Port is a listening port on the machine.
@@ -74,7 +74,7 @@ func (pl List) String() string {
return strings.TrimRight(sb.String(), "\n")
}
var debugDisablePortlist, _ = strconv.ParseBool(os.Getenv("TS_DEBUG_DISABLE_PORTLIST"))
var debugDisablePortlist = envknob.Bool("TS_DEBUG_DISABLE_PORTLIST")
func GetList(prev List) (List, error) {
if debugDisablePortlist {