Flag to skip headers in log files

klog.go

@@ -414,6 +414,7 @@ func InitFlags(flagset *flag.FlagSet) {
 	flagset.BoolVar(&logging.alsoToStderr, "alsologtostderr", false, "log to standard error as well as files")
 	flagset.Var(&logging.verbosity, "v", "number for the log level verbosity")
 	flagset.BoolVar(&logging.skipHeaders, "skip_headers", false, "If true, avoid header prefixes in the log messages")
+	flagset.BoolVar(&logging.skipLogHeaders, "skip_log_headers", false, "If true, avoid headers when openning log files")
 	flagset.Var(&logging.stderrThreshold, "stderrthreshold", "logs at or above this threshold go to stderr")
 	flagset.Var(&logging.vmodule, "vmodule", "comma-separated list of pattern=N settings for file-filtered logging")
 	flagset.Var(&logging.traceLocation, "log_backtrace_at", "when logging hits line file:N, emit a stack trace")
@@ -473,6 +474,9 @@ type loggingT struct {
 
 	// If true, do not add the prefix headers, useful when used with SetOutput
 	skipHeaders bool
+
+	// If true, do not add the headers to log files
+	skipLogHeaders bool
 }
 
 // buffer holds a byte Buffer for reuse. The zero value is ready for use.
@@ -901,6 +905,10 @@ func (sb *syncBuffer) rotateFile(now time.Time, startup bool) error {
 
 	sb.Writer = bufio.NewWriterSize(sb.file, bufferSize)
 
+	if sb.logger.skipLogHeaders {
+		return nil
+	}
+
 	// Write header.
 	var buf bytes.Buffer
 	fmt.Fprintf(&buf, "Log file created at: %s\n", now.Format("2006/01/02 15:04:05"))