Some chunks arrives in wrong order when upload many files

[AllanAndrade]

When I upload about 60 files of text (CSV Files), each one with about 2Kb, one or two of than is uploaded in wrong order.

The file content should be something like:

Id_Lei;Id_TpLei;Num_norma;Ano_norma;Dt_pub_norma;Desc_norma;Ementa_norma;orgao_de;orgao_para;sigla;unidade;cargo;simbolo;quant;Palavras_chave_lei;Dt_ini_vigencia_lei;Dt_fin_vigencia_lei;flagReformaAdm;flagDecAutonomo;Ato_obs;Orgao_obs;Unidade_obs;Cargo_obs;NatJur;Folha_Rosto;Vinculo;Extinto
1;2;13719;2017;07/04/2017;Lei n� 13.719, de 7 de abril de 2017;Disciplina a concess�o do Pr�mio por Desempenho Policial - PDP, institu�do pela Lei no 12.371, de 21 de dezembro de 2011;Secretaria da Seguran�a P�blica;Secretaria da Seguran�a P�blica;SSP;Cargos n�o alocados por Unidade;SIORPE;DAS-2A;0;NULL;NULL;NULL;0;0;NULL;NULL;NULL;NULL;Secretaria;0;NULL;0

But the uploaded file is something like:

lagReformaAdm;flagDecAutonomo;Ato_obs;Orgao_obs;Unidade_obs;Cargo_obs;NatJur;Folha_Rosto;Vinculo;Extinto
1;2;13719;2017;07/04/2017;Lei n� 13.719, de 7 de abril de 2017;Disciplina a concess�o do Pr�mio por Desempenho Policial - PDP, institu�zdo pela Lei no 12.371, de 21 de dezembro de 2011;Secretaria da Seguran�a P�blica;Secretaria da Seguran�a P�blica;SSP;Cargos n�o alocados por Unidade;SIORPE;DAS-2A;0;NULL;NULL;NULL;0;0;NULL;NULL;NULL;NULL;Secretaria;0;NULL;0
Id_Lei;Id_TpLei;Num_norma;Ano_norma;Dt_pub_norma;Desc_norma;Ementa_norma;orgao_de;orgao_para;sigla;unidade;cargo;simbolo;quant;Palavras_chave_lei;Dt_ini_vigencia_lei;Dt_fin_vigencia_lei;f

import uploadSingleFile from './uploadSingleFile';

export default async function uploadMultipleFiles(
  folder: string,
  files: any,
  parent: any,
): Promise<any> {
  let my_promise: any = [];
  for (let i = 0; i < files.length; i++) {
    my_promise = [
      ...my_promise,
      await uploadSingleFile(folder, files[i], parent),
    ];
  }
  return await Promise.all(my_promise);
}

import getFilename from './getFilename';
import fs from 'fs';
import { GraphQLYogaError } from '@graphql-yoga/node';

export default async function uploadSingleFile(
  folder: string,
  file: any,
  parent: any,
): Promise<any> {
  return new Promise(async (resolve, reject) => {
    const { createReadStream, filename, fieldName, mimetype, encoding } =
      await file;
    const my_filename = getFilename(filename, fieldName);
    let size = 0;
    let stream = createReadStream();
    stream.on('data', function (chunk: any) {
      size += chunk.length;
      fs.appendFile(`${folder}/${my_filename}`, chunk, function (err) {
        if (err) throw err;
      });
    });
    stream.on('close', function () {
      resolve({
        nameOriginal: filename,
        nameUploaded: my_filename,
        mimetype: mimetype,
      });
    });
  })
    .then((data) => data)
    .catch((e) => {
      throw new GraphQLYogaError(e.message);
    });
}

Thanks a lot for any help!

[koresar]

1. How do you determine that order is wrong?
2. Are you sure the client-side (browser?) sent the files in the proper order?
3. Anyhow, if there is a bug - it's probably in the busboy module.