添加option

lockx.go

@@ -18,8 +18,40 @@ type globalLock struct {
 	value     string
 }
 
+type option struct {
+	lockTimeout time.Time // 锁的超时时间
+}
+
+func defaultOption() *option {
+	return &option{
+		lockTimeout: time.Minute * 10 // 默认是10分钟
+	}
+}
+
+var opt *option
+
+func init() {
+	opt = defaultOption()
+}
+
+// 设置
+func InitOption(opts ...Option) {
+	for _,app := range opts {
+		app(opt)
+	}
+}
+
+type Option func(*option)
+
+func SetTimeout(t time.Time) Option {
+	return func(o *option) {
+		o.lockTimeout = t
+	}
+}
+
+
 func NewGlobalLock(ctx context.Context, red *redis.Client, uniqueKey string) *globalLock {
-	ctx, cancel := context.WithTimeout(ctx, time.Minute*10)
+	ctx, cancel := context.WithTimeout(ctx, opt.lockTimeout)
 	return &globalLock{
 		redis:     red,
 		ctx:       ctx,