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admin_xa.go
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admin_xa.go
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package proxy
import (
"fmt"
"github.com/sealdb/neodb/backend"
"github.com/sealdb/neodb/router"
"strconv"
"strings"
"time"
"github.com/sealdb/mysqlstack/sqlparser/depends/sqltypes"
"github.com/sealdb/mysqlstack/xlog"
)
const (
// It is more important to find the core cause to the prepared XA,
// so add thresholds to prevent operating too quickly.
intervalToNow = 10000 //one hour.
)
type AdminXA struct {
log *xlog.Log
scatter *backend.Scatter
router *router.Router
spanner *Spanner
}
func NewAdminXA(log *xlog.Log, scatter *backend.Scatter, router *router.Router, spanner *Spanner) *AdminXA {
return &AdminXA{
log: log,
scatter: scatter,
router: router,
spanner: spanner,
}
}
// Recover used to handle the 'XA RECOVER' to all backends .
func (adminXA *AdminXA) Recover() (*sqltypes.Result, error) {
rewritten := fmt.Sprintf("XA RECOVER")
qr, err := adminXA.spanner.ExecuteSingle(rewritten)
if err != nil {
return nil, err
}
return qr, nil
}
// Commit used to handle the 'XA COMMIT' to all XAIDs an hour ago.
func (adminXA *AdminXA) Commit() (*sqltypes.Result, error) {
log := adminXA.log
rewritten := fmt.Sprintf("XA RECOVER")
qr, err := adminXA.spanner.ExecuteSingle(rewritten)
if err != nil {
return nil, err
}
for _, row := range qr.Rows {
// the format of xaid: txn.xid = fmt.Sprintf("RXID-%v-%v", time.Now().Format("20060102150405"), txn.id)
data := string(row[3].Raw())
xaid := strings.SplitN(data, "-", 3)
xaTimeStamp := xaid[1]
now := time.Now().Format("20060102150405")
xaTimeStampInt, _ := strconv.ParseInt(xaTimeStamp, 10, 64)
nowInt, _ := strconv.ParseInt(now, 10, 64)
interval := nowInt - xaTimeStampInt
// the time interval > 1 hour, we will execute the cmd,
// It is more important to find the core cause to the prepared XA.
if interval > intervalToNow {
rewritten := fmt.Sprintf("XA COMMIT '%s'", data)
qr, err := adminXA.spanner.ExecuteScatter(rewritten)
if err != nil {
log.Error("proxy.adminXA.commit.xaid[%s].err:%+v", data, err)
return nil, err
}
log.Warning("proxy.adminXA.commit.xaid[%s].succeed", data)
return qr, err
}
}
return &sqltypes.Result{}, err
}
// Rollback used to handle the 'XA ROLLBACK' to all XAIDs an hour ago.
func (adminXA *AdminXA) Rollback() (*sqltypes.Result, error) {
log := adminXA.log
rewritten := fmt.Sprintf("XA RECOVER")
qr, err := adminXA.spanner.ExecuteSingle(rewritten)
if err != nil {
return nil, err
}
for _, row := range qr.Rows {
// the format of xaid: txn.xid = fmt.Sprintf("RXID-%v-%v", time.Now().Format("20060102150405"), txn.id)
data := string(row[3].Raw())
xaid := strings.SplitN(data, "-", 3)
xaTimeStamp := xaid[1]
now := time.Now().Format("20060102150405")
xaTimeStampInt, _ := strconv.ParseInt(xaTimeStamp, 10, 64)
nowInt, _ := strconv.ParseInt(now, 10, 64)
interval := nowInt - xaTimeStampInt
// the time interval > 1 hour, we will execute the cmd,
// It is more important to find the core cause to the prepared XA.
if interval > intervalToNow {
rewritten := fmt.Sprintf("XA ROLLBACK '%s'", data)
qr, err := adminXA.spanner.ExecuteScatter(rewritten)
if err != nil {
log.Error("proxy.adminXA.rollback.xaid[%s].err:%+v", data, err)
return nil, err
}
log.Warning("proxy.adminXA.rollback.xaid[%s].succeed", data)
return qr, err
}
}
return &sqltypes.Result{}, err
}