export_table.go
2.6 KB
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package service
import (
"fmt"
"github.com/linmadan/egglib-go/core/application"
"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/application/factory"
"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/application/table/command"
"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/domain"
"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/infrastructure/excel"
"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/infrastructure/starrocks"
"time"
)
func (tableService *TableService) ExportDataTable(ctx *domain.Context, cmd *command.TablePreviewCommand) (interface{}, error) {
if err := cmd.ValidateCommand(); err != nil {
return nil, application.ThrowError(application.ARG_ERROR, err.Error())
}
transactionContext, err := factory.CreateTransactionContext(nil)
if err != nil {
return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
}
if err := transactionContext.StartTransaction(); err != nil {
return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
}
defer func() {
transactionContext.RollbackTransaction()
}()
// TODO：加锁 同一个用户同一个时间点只允许一次下载
var table *domain.Table
var mainTable *domain.Table
_, table, err = factory.FastPgTable(transactionContext, cmd.TableId)
if err != nil {
return nil, factory.FastError(err)
}
if table.TableType == domain.SubTable.ToString() {
_, mainTable, err = factory.FastPgTable(transactionContext, cmd.TableId)
if err != nil {
return nil, factory.FastError(err)
}
} else {
mainTable = table
}
var options = starrocks.QueryOptions{
TableName: mainTable.SQLName,
Select: table.Fields(true),
}
// 待优化分批下载，压缩
var dataTable *domain.DataTable
dataTable, err = starrocks.Query(options, starrocks.DefaultQueryFunc)
if err != nil {
return nil, factory.FastError(err)
}
count, err := starrocks.QueryCount(options)
if err != nil {
return nil, factory.FastError(err)
}
filename := fmt.Sprintf("%v_%v.xlsx", table.Name, time.Now().Format("060102150405"))
path := fmt.Sprintf("public/%v", filename)
excelWriter := excel.NewXLXSWriterTo(domain.Fields(table.Fields(false)).NameArrayString(), dataTable.Data) //
if err = excelWriter.Save(path); err != nil {
return nil, factory.FastError(err)
}
if err := transactionContext.CommitTransaction(); err != nil {
return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
}
return map[string]interface{}{
"url": domain.DownloadUrl(filename),
"count": count,
}, nil
}