70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
package dtmcli
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import (
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"context"
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"database/sql"
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"fmt"
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"github.com/yedf/dtm/common"
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)
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type BusiFunc func(db *sql.DB) (interface{}, error)
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type TransInfo struct {
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TransType string
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Gid string
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BranchID string
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BranchType string
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}
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func (t *TransInfo) String() string {
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return fmt.Sprintf("transInfo: %s %s %s %s", t.TransType, t.Gid, t.BranchID, t.BranchType)
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}
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type BarrierModel struct {
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common.ModelBase
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TransInfo
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}
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func (BarrierModel) TableName() string { return "dtm_barrier.barrier" }
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func insertBarrier(tx *sql.Tx, transType string, gid string, branchID string, branchType string) (int64, error) {
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if branchType == "" {
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return 0, nil
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}
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res, err := tx.Exec("insert into dtm_barrier.barrier(trans_type, gid, branch_id, branch_type) values(?,?,?,?)", transType, gid, branchID, branchType)
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if err != nil {
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return 0, err
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}
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return res.RowsAffected()
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}
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func ThroughBarrierCall(db *sql.DB, transType string, gid string, branchId string, branchType string, busiCall BusiFunc) (res interface{}, rerr error) {
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tx, rerr := db.BeginTx(context.Background(), &sql.TxOptions{})
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if rerr != nil {
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return
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}
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defer func() {
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if x := recover(); x != nil {
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tx.Rollback()
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panic(x)
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} else if rerr != nil {
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tx.Rollback()
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} else {
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tx.Commit()
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}
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}()
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originType := map[string]string{
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"cancel": "action",
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"compensate": "action",
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}[branchType]
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originAffected, _ := insertBarrier(tx, transType, gid, branchId, originType)
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currentAffected, rerr := insertBarrier(tx, transType, gid, branchId, branchType)
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if currentAffected == 0 || (originType == "cancel" || originType == "compensate") && originAffected > 0 {
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return
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}
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res, rerr = busiCall(db)
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return
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}
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