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ipn/ipnlocal, wgengine/magicsock, logpolicy: quiet more logs

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Updates #1548

Change-Id: Ied169f872e93be2857890211f2e018307d4aeadc
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2022-02-12 16:22:33 -08:00
committed by Brad Fitzpatrick
parent be9d564c29
commit 2db6cd1025
3 changed files with 19 additions and 6 deletions
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19
logpolicy/logpolicy.go
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@@ -571,6 +571,16 @@ func New(collection string) *Policy {
}
}
// dialLog is used by NewLogtailTransport to log the happy path of its
// own dialing.
//
// By default it goes nowhere and is only enabled when
// tailscaled's in verbose mode.
//
// log.Printf isn't used so its own logs don't loop back into logtail
// in the happy path, thus generating more logs.
var dialLog = log.New(io.Discard, "logtail: ", log.LstdFlags|log.Lmsgprefix)
// SetVerbosityLevel controls the verbosity level that should be
// written to stderr. 0 is the default (not verbose). Levels 1 or higher
// are increasingly verbose.
@@ -578,6 +588,9 @@ func New(collection string) *Policy {
// It should not be changed concurrently with log writes.
func (p *Policy) SetVerbosityLevel(level int) {
p.Logtail.SetVerbosityLevel(level)
if level > 0 {
dialLog.SetOutput(os.Stderr)
}
}
// Close immediately shuts down the logger.
@@ -624,7 +637,7 @@ func NewLogtailTransport(host string) *http.Transport {
c, err := nd.DialContext(ctx, netw, addr)
d := time.Since(t0).Round(time.Millisecond)
if err == nil {
log.Printf("logtail: dialed %q in %v", addr, d)
dialLog.Printf("dialed %q in %v", addr, d)
return c, nil
}
@@ -637,10 +650,10 @@ func NewLogtailTransport(host string) *http.Transport {
err = errors.New(res.Status)
}
if err != nil {
log.Printf("logtail: CONNECT response from tailscaled: %v", err)
log.Printf("logtail: CONNECT response error from tailscaled: %v", err)
c.Close()
} else {
log.Printf("logtail: connected via tailscaled")
dialLog.Printf("connected via tailscaled")
return c, nil
}
}