fix golint issues in rest (#529)

rest/internal/log.go

@@ -10,19 +10,23 @@ import (
 	"github.com/tal-tech/go-zero/rest/httpx"
 )
 
+// LogContext is a context key.
 var LogContext = contextKey("request_logs")
 
+// A LogCollector is used to collect logs.
 type LogCollector struct {
 	Messages []string
 	lock     sync.Mutex
 }
 
+// Append appends msg into log context.
 func (lc *LogCollector) Append(msg string) {
 	lc.lock.Lock()
 	lc.Messages = append(lc.Messages, msg)
 	lc.lock.Unlock()
 }
 
+// Flush flushes collected logs.
 func (lc *LogCollector) Flush() string {
 	var buffer bytes.Buffer
 
@@ -48,18 +52,22 @@ func (lc *LogCollector) takeAll() []string {
 	return messages
 }
 
+// Error logs the given v along with r in error log.
 func Error(r *http.Request, v ...interface{}) {
 	logx.ErrorCaller(1, format(r, v...))
 }
 
+// Errorf logs the given v with format along with r in error log.
 func Errorf(r *http.Request, format string, v ...interface{}) {
 	logx.ErrorCaller(1, formatf(r, format, v...))
 }
 
+// Info logs the given v along with r in access log.
 func Info(r *http.Request, v ...interface{}) {
 	appendLog(r, format(r, v...))
 }
 
+// Infof logs the given v with format along with r in access log.
 func Infof(r *http.Request, format string, v ...interface{}) {
 	appendLog(r, formatf(r, format, v...))
 }