重构数据库备份与恢复模块 (#80)

* fix: 保存 LastResult 时截断字符串过长部分，以避免数据库报错

* refactor: 新增 entity.DbTaskBase 和 persistence.dbTaskBase, 用于实现数据库备份和恢复任务处理相关部分

* fix: aeskey变更后，解密密码出现数组越界访问错误

* fix: 时间属性为零值时，保存到 mysql 数据库报错

* refactor db.infrastructure.service.scheduler

* feat: 实现立即备份功能

* refactor db.infrastructure.service.db_instance

* refactor: 从数据库中获取数据库备份目录、mysql文件路径等配置信息

* fix: 数据库备份和恢复问题

* fix: 修改 .gitignore 文件，忽略数据库备份目录和数据库程序目录

server/internal/db/infrastructure/persistence/db_binlog_history.go

@@ -56,14 +56,14 @@ func (repo *dbBinlogHistoryRepoImpl) GetHistories(instanceId uint64, start, targ
 }
 
 func (repo *dbBinlogHistoryRepoImpl) GetLatestHistory(instanceId uint64) (*entity.DbBinlogHistory, bool, error) {
-	gdb := gormx.NewQuery(repo.GetModel()).
+	history := &entity.DbBinlogHistory{}
+	err := gormx.NewQuery(repo.GetModel()).
 		Eq("db_instance_id", instanceId).
 		Undeleted().
 		OrderByDesc("sequence").
-		GenGdb()
-	history := &entity.DbBinlogHistory{}
-
-	switch err := gdb.First(history).Error; {
+		GenGdb().
+		First(history).Error
+	switch {
 	case err == nil:
 		return history, true, nil
 	case errors.Is(err, gorm.ErrRecordNotFound):
@@ -89,3 +89,35 @@ func (repo *dbBinlogHistoryRepoImpl) Upsert(_ context.Context, history *entity.D
 		}
 	})
 }
+
+func (repo *dbBinlogHistoryRepoImpl) InsertWithBinlogFiles(ctx context.Context, instanceId uint64, binlogFiles []*entity.BinlogFile) error {
+	if len(binlogFiles) == 0 {
+		return nil
+	}
+	histories := make([]*entity.DbBinlogHistory, 0, len(binlogFiles))
+	for _, fileOnServer := range binlogFiles {
+		if !fileOnServer.Downloaded {
+			break
+		}
+		history := &entity.DbBinlogHistory{
+			CreateTime:     time.Now(),
+			FileName:       fileOnServer.Name,
+			FileSize:       fileOnServer.Size,
+			Sequence:       fileOnServer.Sequence,
+			FirstEventTime: fileOnServer.FirstEventTime,
+			DbInstanceId:   instanceId,
+		}
+		histories = append(histories, history)
+	}
+	if len(histories) > 1 {
+		if err := repo.BatchInsert(ctx, histories[:len(histories)-1]); err != nil {
+			return err
+		}
+	}
+	if len(histories) > 0 {
+		if err := repo.Upsert(ctx, histories[len(histories)-1]); err != nil {
+			return err
+		}
+	}
+	return nil
+}