hoteas
f787421f82
- 添加txFailed标志跟踪事务内的SQL错误状态 - 在事务模式下遇到SQL错误时立即标记事务失败并阻止重试 - 修改Action方法确保SQL出错时强制回滚事务 - 为事务失败场景添加完整的单元测试覆盖 - 防止在事务已回滚的情况下继续执行后续操作导致数据不一致
105 lines
2.2 KiB
Go
105 lines
2.2 KiB
Go
package db
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import (
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"fmt"
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"sync"
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"sync/atomic"
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)
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var savepointCounter uint64
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// Action 事务操作
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// 如果 action 返回 true 则提交事务；返回 false 则回滚
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// 测试模式下（testTx != nil），使用 SAVEPOINT 代替真事务，确保嵌套事务不会绕过外层测试事务
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func (that *HoTimeDB) Action(action func(db HoTimeDB) (isSuccess bool)) (isSuccess bool) {
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db := HoTimeDB{
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DB: that.DB,
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ContextBase: that.ContextBase,
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DBName: that.DBName,
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HoTimeCache: that.HoTimeCache,
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Log: that.Log,
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Type: that.Type,
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Prefix: that.Prefix,
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LastQuery: that.LastQuery,
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LastData: that.LastData,
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ConnectFunc: that.ConnectFunc,
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LastErr: that.LastErr,
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limit: that.limit,
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Tx: that.Tx,
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SlaveDB: that.SlaveDB,
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Mode: that.Mode,
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Dialect: that.Dialect,
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mu: sync.RWMutex{},
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limitMu: sync.Mutex{},
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testTx: that.testTx,
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testMu: that.testMu,
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}
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txFailed := false
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db.txFailed = &txFailed
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if that.testTx != nil {
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spName := fmt.Sprintf("sp_%d", atomic.AddUint64(&savepointCounter, 1))
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if that.testMu != nil {
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that.testMu.Lock()
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}
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_, _ = that.testTx.Exec("SAVEPOINT " + spName)
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if that.testMu != nil {
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that.testMu.Unlock()
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}
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db.Tx = that.testTx
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isSuccess = action(db)
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if txFailed || !isSuccess {
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if that.testMu != nil {
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that.testMu.Lock()
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}
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_, _ = that.testTx.Exec("ROLLBACK TO SAVEPOINT " + spName)
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if that.testMu != nil {
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that.testMu.Unlock()
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}
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return false
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}
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if that.testMu != nil {
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that.testMu.Lock()
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}
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_, _ = that.testTx.Exec("RELEASE SAVEPOINT " + spName)
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if that.testMu != nil {
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that.testMu.Unlock()
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}
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return isSuccess
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}
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tx, err := db.Begin()
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if err != nil {
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that.LastErr.SetError(err)
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return isSuccess
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}
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db.Tx = tx
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isSuccess = action(db)
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// SQL 出过错 → 事务必须回滚，不管回调返回什么
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if txFailed {
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_ = db.Tx.Rollback()
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return false
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}
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if !isSuccess {
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err = db.Tx.Rollback()
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if err != nil {
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that.LastErr.SetError(err)
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return isSuccess
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}
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return isSuccess
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}
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err = db.Tx.Commit()
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if err != nil {
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that.LastErr.SetError(err)
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return false
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}
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return true
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}
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