对服务增加基础的数据统计/部分代码分Package

internal/db/models/client_system_dao.go

@@ -0,0 +1,119 @@
+package models
+
+import (
+	"encoding/json"
+	_ "github.com/go-sql-driver/mysql"
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/iwind/TeaGo/dbs"
+)
+
+const (
+	ClientSystemStateEnabled  = 1 // 已启用
+	ClientSystemStateDisabled = 0 // 已禁用
+)
+
+var clientSystemNameAndIdCacheMap = map[string]int64{} // system name => id
+
+type ClientSystemDAO dbs.DAO
+
+func NewClientSystemDAO() *ClientSystemDAO {
+	return dbs.NewDAO(&ClientSystemDAO{
+		DAOObject: dbs.DAOObject{
+			DB:     Tea.Env,
+			Table:  "edgeClientSystems",
+			Model:  new(ClientSystem),
+			PkName: "id",
+		},
+	}).(*ClientSystemDAO)
+}
+
+var SharedClientSystemDAO *ClientSystemDAO
+
+func init() {
+	dbs.OnReady(func() {
+		SharedClientSystemDAO = NewClientSystemDAO()
+	})
+}
+
+// 启用条目
+func (this *ClientSystemDAO) EnableClientSystem(tx *dbs.Tx, id uint32) error {
+	_, err := this.Query(tx).
+		Pk(id).
+		Set("state", ClientSystemStateEnabled).
+		Update()
+	return err
+}
+
+// 禁用条目
+func (this *ClientSystemDAO) DisableClientSystem(tx *dbs.Tx, id uint32) error {
+	_, err := this.Query(tx).
+		Pk(id).
+		Set("state", ClientSystemStateDisabled).
+		Update()
+	return err
+}
+
+// 查找启用中的条目
+func (this *ClientSystemDAO) FindEnabledClientSystem(tx *dbs.Tx, id int64) (*ClientSystem, error) {
+	result, err := this.Query(tx).
+		Pk(id).
+		Attr("state", ClientSystemStateEnabled).
+		Find()
+	if result == nil {
+		return nil, err
+	}
+	return result.(*ClientSystem), err
+}
+
+// 根据主键查找名称
+func (this *ClientSystemDAO) FindClientSystemName(tx *dbs.Tx, id uint32) (string, error) {
+	return this.Query(tx).
+		Pk(id).
+		Result("name").
+		FindStringCol("")
+}
+
+// 根据操作系统名称查找系统ID
+func (this *ClientSystemDAO) FindSystemIdWithNameCacheable(tx *dbs.Tx, systemName string) (int64, error) {
+	SharedCacheLocker.RLock()
+	systemId, ok := clientSystemNameAndIdCacheMap[systemName]
+	if ok {
+		SharedCacheLocker.RUnlock()
+		return systemId, nil
+	}
+	SharedCacheLocker.RUnlock()
+
+	systemId, err := this.Query(tx).
+		Where("JSON_CONTAINS(codes, :systemName)").
+		Param("systemName", "\""+systemName+"\""). // 查询的需要是个JSON字符串，所以这里加双引号
+		ResultPk().
+		FindInt64Col(0)
+	if err != nil {
+		return 0, err
+	}
+
+	if systemId > 0 {
+		// 只有找到的时候才放入缓存，以便于我们可以在不存在的时候创建一条新的记录
+		SharedCacheLocker.Lock()
+		clientSystemNameAndIdCacheMap[systemName] = systemId
+		SharedCacheLocker.Unlock()
+	}
+
+	return systemId, nil
+}
+
+// 创建浏览器
+func (this *ClientSystemDAO) CreateSystem(tx *dbs.Tx, systemName string) (int64, error) {
+	op := NewClientSystemOperator()
+	op.Name = systemName
+
+	codes := []string{systemName}
+	codesJSON, err := json.Marshal(codes)
+	if err != nil {
+		return 0, err
+	}
+	op.Codes = codesJSON
+
+	op.State = ClientSystemStateEnabled
+	return this.SaveInt64(tx, op)
+}