mirror of
https://gitee.com/dromara/mayfly-go
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273 lines
8.1 KiB
Go
273 lines
8.1 KiB
Go
package application
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import (
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"encoding/json"
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"fmt"
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"mayfly-go/internal/db/config"
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"mayfly-go/internal/db/domain/entity"
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"mayfly-go/internal/db/domain/repository"
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"mayfly-go/pkg/biz"
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"mayfly-go/pkg/model"
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"strconv"
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"strings"
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"github.com/xwb1989/sqlparser"
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)
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type DbSqlExecReq struct {
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DbId uint64
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Db string
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Sql string
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Remark string
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LoginAccount *model.LoginAccount
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DbInstance *DbInstance
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}
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type DbSqlExecRes struct {
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ColNames []string
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Res []map[string]any
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}
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// 合并执行结果，主要用于执行多条sql使用
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func (d *DbSqlExecRes) Merge(execRes *DbSqlExecRes) {
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canMerge := len(d.ColNames) == len(execRes.ColNames)
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if !canMerge {
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return
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}
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// 列名不一致，则不合并
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for i, colName := range d.ColNames {
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if execRes.ColNames[i] != colName {
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return
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}
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}
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d.Res = append(d.Res, execRes.Res...)
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}
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type DbSqlExec interface {
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// 执行sql
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Exec(execSqlReq *DbSqlExecReq) (*DbSqlExecRes, error)
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// 根据条件删除sql执行记录
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DeleteBy(condition *entity.DbSqlExec)
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// 分页获取
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GetPageList(condition *entity.DbSqlExecQuery, pageParam *model.PageParam, toEntity any, orderBy ...string) *model.PageResult[any]
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}
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func newDbSqlExecApp(dbExecSqlRepo repository.DbSqlExec) DbSqlExec {
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return &dbSqlExecAppImpl{
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dbSqlExecRepo: dbExecSqlRepo,
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}
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}
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type dbSqlExecAppImpl struct {
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dbSqlExecRepo repository.DbSqlExec
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}
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func createSqlExecRecord(execSqlReq *DbSqlExecReq) *entity.DbSqlExec {
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dbSqlExecRecord := new(entity.DbSqlExec)
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dbSqlExecRecord.DbId = execSqlReq.DbId
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dbSqlExecRecord.Db = execSqlReq.Db
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dbSqlExecRecord.Sql = execSqlReq.Sql
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dbSqlExecRecord.Remark = execSqlReq.Remark
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dbSqlExecRecord.SetBaseInfo(execSqlReq.LoginAccount)
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return dbSqlExecRecord
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}
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func (d *dbSqlExecAppImpl) Exec(execSqlReq *DbSqlExecReq) (*DbSqlExecRes, error) {
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sql := execSqlReq.Sql
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dbSqlExecRecord := createSqlExecRecord(execSqlReq)
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dbSqlExecRecord.Type = entity.DbSqlExecTypeOther
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var execRes *DbSqlExecRes
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isSelect := false
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stmt, err := sqlparser.Parse(sql)
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if err != nil {
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// 就算解析失败也执行sql，让数据库来判断错误。如果是查询sql则简单判断是否有limit分页参数信息（兼容pgsql）
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// global.Log.Warnf("sqlparse解析sql[%s]失败: %s", sql, err.Error())
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lowerSql := strings.ToLower(execSqlReq.Sql)
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isSelect := strings.HasPrefix(lowerSql, "select")
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if isSelect {
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// 如果配置为0，则不校验分页参数
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maxCount := config.GetDbQueryMaxCount()
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if maxCount != 0 {
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biz.IsTrue(strings.Contains(lowerSql, "limit"), "请完善分页信息后执行")
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}
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}
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var execErr error
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if isSelect || strings.HasPrefix(lowerSql, "show") {
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execRes, execErr = doRead(execSqlReq)
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} else {
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execRes, execErr = doExec(execSqlReq.Sql, execSqlReq.DbInstance)
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}
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if execErr != nil {
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return nil, execErr
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}
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d.saveSqlExecLog(isSelect, dbSqlExecRecord)
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return execRes, nil
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}
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switch stmt := stmt.(type) {
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case *sqlparser.Select:
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isSelect = true
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execRes, err = doSelect(stmt, execSqlReq)
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case *sqlparser.Show:
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isSelect = true
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execRes, err = doRead(execSqlReq)
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case *sqlparser.OtherRead:
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isSelect = true
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execRes, err = doRead(execSqlReq)
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case *sqlparser.Update:
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execRes, err = doUpdate(stmt, execSqlReq, dbSqlExecRecord)
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case *sqlparser.Delete:
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execRes, err = doDelete(stmt, execSqlReq, dbSqlExecRecord)
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case *sqlparser.Insert:
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execRes, err = doInsert(stmt, execSqlReq, dbSqlExecRecord)
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default:
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execRes, err = doExec(execSqlReq.Sql, execSqlReq.DbInstance)
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}
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if err != nil {
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return nil, err
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}
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d.saveSqlExecLog(isSelect, dbSqlExecRecord)
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return execRes, nil
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}
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// 保存sql执行记录，如果是查询类则根据系统配置判断是否保存
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func (d *dbSqlExecAppImpl) saveSqlExecLog(isQuery bool, dbSqlExecRecord *entity.DbSqlExec) {
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if !isQuery {
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d.dbSqlExecRepo.Insert(dbSqlExecRecord)
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return
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}
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if config.GetDbSaveQuerySql() {
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dbSqlExecRecord.Table = "-"
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dbSqlExecRecord.OldValue = "-"
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dbSqlExecRecord.Type = entity.DbSqlExecTypeQuery
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d.dbSqlExecRepo.Insert(dbSqlExecRecord)
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}
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}
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func (d *dbSqlExecAppImpl) DeleteBy(condition *entity.DbSqlExec) {
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d.dbSqlExecRepo.DeleteBy(condition)
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}
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func (d *dbSqlExecAppImpl) GetPageList(condition *entity.DbSqlExecQuery, pageParam *model.PageParam, toEntity any, orderBy ...string) *model.PageResult[any] {
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return d.dbSqlExecRepo.GetPageList(condition, pageParam, toEntity, orderBy...)
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}
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func doSelect(selectStmt *sqlparser.Select, execSqlReq *DbSqlExecReq) (*DbSqlExecRes, error) {
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selectExprsStr := sqlparser.String(selectStmt.SelectExprs)
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if selectExprsStr == "*" || strings.Contains(selectExprsStr, ".*") ||
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len(strings.Split(selectExprsStr, ",")) > 1 {
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// 如果配置为0，则不校验分页参数
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maxCount := config.GetDbQueryMaxCount()
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if maxCount != 0 {
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limit := selectStmt.Limit
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biz.NotNil(limit, "请完善分页信息后执行")
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count, err := strconv.Atoi(sqlparser.String(limit.Rowcount))
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biz.ErrIsNil(err, "分页参数有误")
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biz.IsTrue(count <= maxCount, "查询结果集数需小于系统配置的%d条", maxCount)
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}
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}
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return doRead(execSqlReq)
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}
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func doRead(execSqlReq *DbSqlExecReq) (*DbSqlExecRes, error) {
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dbInstance := execSqlReq.DbInstance
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sql := execSqlReq.Sql
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colNames, res, err := dbInstance.SelectData(sql)
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if err != nil {
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return nil, err
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}
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return &DbSqlExecRes{
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ColNames: colNames,
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Res: res,
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}, nil
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}
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func doUpdate(update *sqlparser.Update, execSqlReq *DbSqlExecReq, dbSqlExec *entity.DbSqlExec) (*DbSqlExecRes, error) {
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dbInstance := execSqlReq.DbInstance
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tableStr := sqlparser.String(update.TableExprs)
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// 可能使用别名，故空格切割
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tableName := strings.Split(tableStr, " ")[0]
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where := sqlparser.String(update.Where)
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biz.IsTrue(len(where) > 0, "SQL[%s]未执行. 请完善 where 条件后再执行", execSqlReq.Sql)
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updateExprs := update.Exprs
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updateColumns := make([]string, 0)
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for _, v := range updateExprs {
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updateColumns = append(updateColumns, v.Name.Name.String())
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}
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// 获取表主键列名,排除使用别名
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primaryKey := dbInstance.GetMeta().GetPrimaryKey(tableName)
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updateColumnsAndPrimaryKey := strings.Join(updateColumns, ",") + "," + primaryKey
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// 查询要更新字段数据的旧值，以及主键值
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selectSql := fmt.Sprintf("SELECT %s FROM %s %s LIMIT 200", updateColumnsAndPrimaryKey, tableStr, where)
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_, res, err := dbInstance.SelectData(selectSql)
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if err == nil {
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bytes, _ := json.Marshal(res)
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dbSqlExec.OldValue = string(bytes)
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} else {
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dbSqlExec.OldValue = err.Error()
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}
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dbSqlExec.Table = tableName
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dbSqlExec.Type = entity.DbSqlExecTypeUpdate
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return doExec(execSqlReq.Sql, dbInstance)
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}
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func doDelete(delete *sqlparser.Delete, execSqlReq *DbSqlExecReq, dbSqlExec *entity.DbSqlExec) (*DbSqlExecRes, error) {
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dbInstance := execSqlReq.DbInstance
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tableStr := sqlparser.String(delete.TableExprs)
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// 可能使用别名，故空格切割
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table := strings.Split(tableStr, " ")[0]
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where := sqlparser.String(delete.Where)
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biz.IsTrue(len(where) > 0, "SQL[%s]未执行. 请完善 where 条件后再执行", execSqlReq.Sql)
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// 查询删除数据
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selectSql := fmt.Sprintf("SELECT * FROM %s %s LIMIT 200", tableStr, where)
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_, res, _ := dbInstance.SelectData(selectSql)
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bytes, _ := json.Marshal(res)
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dbSqlExec.OldValue = string(bytes)
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dbSqlExec.Table = table
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dbSqlExec.Type = entity.DbSqlExecTypeDelete
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return doExec(execSqlReq.Sql, dbInstance)
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}
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func doInsert(insert *sqlparser.Insert, execSqlReq *DbSqlExecReq, dbSqlExec *entity.DbSqlExec) (*DbSqlExecRes, error) {
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tableStr := sqlparser.String(insert.Table)
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// 可能使用别名，故空格切割
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table := strings.Split(tableStr, " ")[0]
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dbSqlExec.Table = table
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dbSqlExec.Type = entity.DbSqlExecTypeInsert
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return doExec(execSqlReq.Sql, execSqlReq.DbInstance)
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}
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func doExec(sql string, dbInstance *DbInstance) (*DbSqlExecRes, error) {
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rowsAffected, err := dbInstance.Exec(sql)
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execRes := "success"
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if err != nil {
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execRes = err.Error()
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}
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res := make([]map[string]any, 0)
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resData := make(map[string]any)
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resData["rowsAffected"] = rowsAffected
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resData["sql"] = sql
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resData["result"] = execRes
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res = append(res, resData)
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return &DbSqlExecRes{
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ColNames: []string{"sql", "rowsAffected", "result"},
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Res: res,
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}, err
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}
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