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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
portlist/portlist.go
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@@ -74,10 +74,10 @@ func (pl List) String() string {
return strings.TrimRight(sb.String(), "\n")
}
var debugDisablePortlist = envknob.Bool("TS_DEBUG_DISABLE_PORTLIST")
var debugDisablePortlist = envknob.RegisterBool("TS_DEBUG_DISABLE_PORTLIST")
func GetList(prev List) (List, error) {
if debugDisablePortlist {
if debugDisablePortlist() {
return nil, nil
}
pl, err := listPorts()