对服务增加基础的数据统计/部分代码分Package

internal/db/models/regions/region_provider_dao.go

@@ -0,0 +1,113 @@
+package regions
+
+import (
+	"encoding/json"
+	_ "github.com/go-sql-driver/mysql"
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/iwind/TeaGo/dbs"
+)
+
+const (
+	RegionProviderStateEnabled  = 1 // 已启用
+	RegionProviderStateDisabled = 0 // 已禁用
+)
+
+var regionProviderNameAndIdCacheMap = map[string]int64{} // provider name => id
+
+type RegionProviderDAO dbs.DAO
+
+func NewRegionProviderDAO() *RegionProviderDAO {
+	return dbs.NewDAO(&RegionProviderDAO{
+		DAOObject: dbs.DAOObject{
+			DB:     Tea.Env,
+			Table:  "edgeRegionProviders",
+			Model:  new(RegionProvider),
+			PkName: "id",
+		},
+	}).(*RegionProviderDAO)
+}
+
+var SharedRegionProviderDAO *RegionProviderDAO
+
+func init() {
+	dbs.OnReady(func() {
+		SharedRegionProviderDAO = NewRegionProviderDAO()
+	})
+}
+
+// 启用条目
+func (this *RegionProviderDAO) EnableRegionProvider(tx *dbs.Tx, id uint32) error {
+	_, err := this.Query(tx).
+		Pk(id).
+		Set("state", RegionProviderStateEnabled).
+		Update()
+	return err
+}
+
+// 禁用条目
+func (this *RegionProviderDAO) DisableRegionProvider(tx *dbs.Tx, id uint32) error {
+	_, err := this.Query(tx).
+		Pk(id).
+		Set("state", RegionProviderStateDisabled).
+		Update()
+	return err
+}
+
+// 查找启用中的条目
+func (this *RegionProviderDAO) FindEnabledRegionProvider(tx *dbs.Tx, id uint32) (*RegionProvider, error) {
+	result, err := this.Query(tx).
+		Pk(id).
+		Attr("state", RegionProviderStateEnabled).
+		Find()
+	if result == nil {
+		return nil, err
+	}
+	return result.(*RegionProvider), err
+}
+
+// 根据主键查找名称
+func (this *RegionProviderDAO) FindRegionProviderName(tx *dbs.Tx, id uint32) (string, error) {
+	return this.Query(tx).
+		Pk(id).
+		Result("name").
+		FindStringCol("")
+}
+
+// 根据服务商名称查找服务商ID
+func (this *RegionProviderDAO) FindProviderIdWithNameCacheable(tx *dbs.Tx, providerName string) (int64, error) {
+	SharedCacheLocker.RLock()
+	providerId, ok := regionProviderNameAndIdCacheMap[providerName]
+	if ok {
+		SharedCacheLocker.RUnlock()
+		return providerId, nil
+	}
+	SharedCacheLocker.RUnlock()
+
+	providerId, err := this.Query(tx).
+		Where("JSON_CONTAINS(codes, :providerName)").
+		Param("providerName", "\""+providerName+"\""). // 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
+	}
+
+	SharedCacheLocker.Lock()
+	regionProviderNameAndIdCacheMap[providerName] = providerId
+	SharedCacheLocker.Unlock()
+
+	return providerId, nil
+}
+
+// 创建Provider
+func (this *RegionProviderDAO) CreateProvider(tx *dbs.Tx, name string) (int64, error) {
+	op := NewRegionProviderOperator()
+	op.Name = name
+
+	codesJSON, err := json.Marshal([]string{name})
+	if err != nil {
+		return 0, err
+	}
+	op.Codes = codesJSON
+	return this.SaveInt64(tx, op)
+}