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envoy: improvements to logging (#742)

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Caleb Doxsey 2020-05-20 13:05:41 -06:00 • committed by GitHub
parent f40fb3d2ea
commit 84378440f0
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1 changed files with 18 additions and 16 deletions
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34
internal/envoy/envoy.go
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@ -68,8 +68,9 @@ func (srv *Server) Run(ctx context.Context) error {
srv.cmd = exec.CommandContext(ctx, envoyPath,
"-c", configFileName,
"--log-level", log.Logger.GetLevel().String(),
"--log-format", "%l--%n--%v",
"--log-format", "[LOG_FORMAT]%l--%n--%v",
"--log-format-escaped",
"--disable-hot-restart",
)
srv.cmd.Dir = srv.wd
@ -132,35 +133,36 @@ static_resources:
}
func (srv *Server) handleLogs(stdout io.ReadCloser) {
fileNameAndNumberRE := regexp.MustCompile(`^(\[[^:]+:[0-9]+\])\s(.*)$`)
logFormatRE := regexp.MustCompile(`^[[]LOG_FORMAT[]](.*?)--(.*?)--(.*?)$`)
fileNameAndNumberRE := regexp.MustCompile(`^(\[[a-zA-Z0-9/-_.]+:[0-9]+])\s(.*)$`)
s := bufio.NewScanner(stdout)
for s.Scan() {
ln := s.Text()
// format: level--name--message
// format: [LOG_FORMAT]level--name--message
// message is c-escaped
lvl := zerolog.TraceLevel
if pos := strings.Index(ln, "--"); pos >= 0 {
lvlstr := ln[:pos]
ln = ln[pos+2:]
if x, err := zerolog.ParseLevel(lvlstr); err == nil {
lvl := zerolog.DebugLevel
name := "envoy"
msg := ln
parts := logFormatRE.FindStringSubmatch(ln)
if len(parts) == 4 {
if x, err := zerolog.ParseLevel(parts[1]); err == nil {
lvl = x
}
name = parts[2]
msg = parts[3]
}
name := ""
if pos := strings.Index(ln, "--"); pos >= 0 {
name = ln[:pos]
ln = ln[pos+2:]
}
msg := fileNameAndNumberRE.ReplaceAllString(ln, "\"$2\"")
msg = fileNameAndNumberRE.ReplaceAllString(msg, "\"$2\"")
if s, err := strconv.Unquote(msg); err == nil {
msg = s
}
log.WithLevel(lvl).Str("service", "envoy").Str("name", name).Msg(msg)
log.WithLevel(lvl).
Str("service", "envoy").
Str("name", name).
Msg(msg)
}
}