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global_transaction.go
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global_transaction.go
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/*
* This file is part of the hptx distribution (https://github.com/cectc/htpx).
* Copyright 2022 CECTC, Inc.
*
* This program is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this
* program. If not, see <https://www.gnu.org/licenses/>.
*/
package grpc
import (
"context"
"strings"
"github.com/cectc/dbpack/pkg/log"
"google.golang.org/grpc"
"github.com/cectc/hptx/pkg/constant"
"github.com/cectc/hptx/pkg/core"
)
type GlobalTransactionInfo struct {
FullMethod string
Timeout int32
}
func GlobalTransactionInterceptor(globalTransactionInfos []*GlobalTransactionInfo) grpc.UnaryServerInterceptor {
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
var xid string
transactionManager := core.GetDistributedTransactionManager()
for _, gs := range globalTransactionInfos {
if strings.EqualFold(gs.FullMethod, info.FullMethod) {
xid, err = transactionManager.Begin(ctx, gs.FullMethod, gs.Timeout)
if err != nil {
return nil, err
}
ctx = context.WithValue(ctx, constant.XID, xid)
resp, err = handler(ctx, req)
if err == nil {
_, commitErr := core.GetDistributedTransactionManager().Commit(ctx, xid)
if err != nil {
log.Error(err)
return resp, commitErr
}
} else {
_, rollbackErr := core.GetDistributedTransactionManager().Rollback(ctx, xid)
if rollbackErr != nil {
log.Error(rollbackErr)
}
}
return resp, err
}
}
return handler(ctx, req)
}
}