/
m_trans.go
44 lines (35 loc) · 1 KB
/
m_trans.go
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package model
import (
"context"
"github.com/tanjiancheng/gin-amis-admin/internal/app/icontext"
"github.com/tanjiancheng/gin-amis-admin/internal/app/model"
"github.com/tanjiancheng/gin-amis-admin/pkg/errors"
"github.com/google/wire"
"go.mongodb.org/mongo-driver/mongo"
)
var _ model.ITrans = new(Trans)
// TransSet 注入Trans
var TransSet = wire.NewSet(wire.Struct(new(Trans), "*"), wire.Bind(new(model.ITrans), new(*Trans)))
// Trans 事务管理
type Trans struct {
Client *mongo.Client
}
// Exec 执行事务
func (a *Trans) Exec(ctx context.Context, fn func(context.Context) error) error {
if _, ok := icontext.FromTrans(ctx); ok {
return fn(ctx)
}
session, err := a.Client.StartSession()
if err != nil {
return errors.WithStack(err)
}
defer session.EndSession(ctx)
_, err = session.WithTransaction(ctx, func(sessCtx mongo.SessionContext) (interface{}, error) {
err := fn(icontext.NewTrans(sessCtx, true))
return nil, err
})
if err != nil {
return errors.WithStack(err)
}
return nil
}