refactor(worker): added Type() method to provider

worker/provider.go

@@ -10,8 +10,6 @@ import (
 
 // mirror provider is the wrapper of mirror jobs
 
-type providerType uint8
-
 const (
 	_WorkingDirKey = "working_dir"
 	_LogDirKey     = "log_dir"
@@ -24,6 +22,8 @@ type mirrorProvider interface {
 	Name() string
 	Upstream() string
 
+	Type() providerEnum
+
 	// run mirror job in background
 	Run() error
 	// run mirror job in background