misc: add debug output(#master)

OhYee · Jan 21, 2020 · abf372d · abf372d
1 parent 6b9ae21
commit abf372d
Showing 1 changed file with 16 additions and 2 deletions.
diff --git a/server/callback.go b/server/callback.go
@@ -3,20 +3,29 @@ package server
 // LogCallbackType callback when output log
 type LogCallbackType func(format string, args ...interface{})
 
+// DebugCallbackType callback when output debug data
+type DebugCallbackType func(format string, args ...interface{})
+
 // ErrCallbackType callback when error occurs
 type ErrCallbackType func(err error)
 
 // Singleton Pattern
 var (
-	logCallback = func(format string, args ...interface{}) {}
-	errCallback = func(err error) {}
+	logCallback   = func(format string, args ...interface{}) {}
+	debugCallback = func(format string, args ...interface{}) {}
+	errCallback   = func(err error) {}
 )
 
 // SetLogCallback set callback when output log
 func SetLogCallback(callback LogCallbackType) {
 	logCallback = callback
 }
 
+// SetDebugCallback set callback when output log
+func SetDebugCallback(callback DebugCallbackType) {
+	debugCallback = callback
+}
+
 // SetErrCallback set callback when error occurs
 func SetErrCallback(callback ErrCallbackType) {
 	errCallback = callback
@@ -27,6 +36,11 @@ func Log(format string, args ...interface{}) {
 	logCallback(format, args...)
 }
 
+// Debug make a debug output
+func Debug(format string, args ...interface{}) {
+	debugCallback(format, args...)
+}
+
 // Err make a error output
 func Err(err error) {
 	errCallback(err)