70 lines
2.6 KiB
Go
70 lines
2.6 KiB
Go
// Package database define database operation functions
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package database
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import (
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"context"
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"fmt"
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"time"
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"modelRT/common/errcode"
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constants "modelRT/constant"
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"modelRT/network"
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"modelRT/orm"
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"gorm.io/gorm"
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)
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// UpdateTopologicIntoDB define update topologic info of the circuit diagram query by pageID and topologic info
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func UpdateTopologicIntoDB(ctx context.Context, tx *gorm.DB, pageID int64, changeInfo network.TopologicUUIDChangeInfos) error {
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var result *gorm.DB
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cancelCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
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defer cancel()
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switch changeInfo.ChangeType {
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case constants.UUIDFromChangeType:
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result = tx.WithContext(cancelCtx).Model(&orm.Topologic{}).Where("page_id = ? and uuid_from = ? and uuid_to = ?", pageID, changeInfo.OldUUIDFrom, changeInfo.OldUUIDTo).Updates(orm.Topologic{UUIDFrom: changeInfo.NewUUIDFrom})
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case constants.UUIDToChangeType:
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var delTopologic orm.Topologic
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result = tx.WithContext(cancelCtx).Model(&orm.Topologic{}).Where("page_id = ? and uuid_to = ?", pageID, changeInfo.NewUUIDTo).Find(&delTopologic)
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if result.Error != nil {
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return fmt.Errorf("find topologic link by new_uuid_to failed:%w", result.Error)
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}
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if result.RowsAffected == 1 {
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// delete old topologic link
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result = tx.WithContext(cancelCtx).Where("id = ?", delTopologic.ID).Delete(&delTopologic)
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if result.Error != nil || result.RowsAffected == 0 {
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err := result.Error
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if result.RowsAffected == 0 {
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err = fmt.Errorf("%w:please check delete topologic where conditions", errcode.ErrDeleteRowZero)
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}
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return fmt.Errorf("del old topologic link by new_uuid_to failed:%w", err)
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}
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}
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result = tx.WithContext(cancelCtx).Model(&orm.Topologic{}).Where("page_id = ? and uuid_from = ? and uuid_to = ?", pageID, changeInfo.OldUUIDFrom, changeInfo.OldUUIDTo).Updates(&orm.Topologic{UUIDTo: changeInfo.NewUUIDTo})
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case constants.UUIDAddChangeType:
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topologic := orm.Topologic{
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Flag: changeInfo.Flag,
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UUIDFrom: changeInfo.NewUUIDFrom,
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UUIDTo: changeInfo.NewUUIDTo,
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Comment: changeInfo.Comment,
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}
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result = tx.WithContext(cancelCtx).Create(&topologic)
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}
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// update 检查 result.RowsAffected 结果时,RowsAffected==0
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// 可能存在 result.Error 为 nil 的情况,谨慎使用 result.Error.Error()
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// 函数,避免造成空指针问题
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if result.Error != nil || result.RowsAffected == 0 {
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err := result.Error
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if result.RowsAffected == 0 {
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err = fmt.Errorf("%w:please check update topologic where conditions", errcode.ErrUpdateRowZero)
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}
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return fmt.Errorf("insert or update topologic link failed:%w", err)
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}
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return nil
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}
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