🎨 更新项目版本

utils/casbin_util.go

@@ -0,0 +1,52 @@
+package utils
+
+import (
+	"sync"
+
+	"git.echol.cn/loser/lckt/global"
+	"github.com/casbin/casbin/v2"
+	"github.com/casbin/casbin/v2/model"
+	gormadapter "github.com/casbin/gorm-adapter/v3"
+	"go.uber.org/zap"
+)
+
+var (
+	syncedCachedEnforcer *casbin.SyncedCachedEnforcer
+	once                 sync.Once
+)
+
+// GetCasbin 获取casbin实例
+func GetCasbin() *casbin.SyncedCachedEnforcer {
+	once.Do(func() {
+		a, err := gormadapter.NewAdapterByDB(global.GVA_DB)
+		if err != nil {
+			zap.L().Error("适配数据库失败请检查casbin表是否为InnoDB引擎!", zap.Error(err))
+			return
+		}
+		text := `
+		[request_definition]
+		r = sub, obj, act
+		
+		[policy_definition]
+		p = sub, obj, act
+		
+		[role_definition]
+		g = _, _
+		
+		[policy_effect]
+		e = some(where (p.eft == allow))
+		
+		[matchers]
+		m = r.sub == p.sub && keyMatch2(r.obj,p.obj) && r.act == p.act
+		`
+		m, err := model.NewModelFromString(text)
+		if err != nil {
+			zap.L().Error("字符串加载模型失败!", zap.Error(err))
+			return
+		}
+		syncedCachedEnforcer, _ = casbin.NewSyncedCachedEnforcer(m, a)
+		syncedCachedEnforcer.SetExpireTime(60 * 60)
+		_ = syncedCachedEnforcer.LoadPolicy()
+	})
+	return syncedCachedEnforcer
+}