部署在google计算引擎上时,hyperledger composer模块local_connection.json

我有一个hyperledger composer项目,它可以在本地主机上顺利运行,但我试图将它部署到google云计算引擎,但无法正常工作。

该项目分为两部分:一个作曲家网络和一个与网络交互的nodejs后端。T

我跟随开发人员,从composer站点部署到单个组织教程。

nodejs服务器处理注册和登录逻辑,并公开rest api以与客户端交互。这是我的代码:

索引文件

//post call to register graduate on the network
app.post('/api/registerGraduate', function(req, res) {
    console.log("Creando cuenta graduado");
    var graduateRut = req.body.graduaterut;
    var cardId = req.body.cardid;
    var firstName = req.body.firstname;
    var lastName = req.body.lastname;
    var email = req.body.email;
    var phoneNumber = req.body.phonenumber;

    network.registerGraduate(cardId, graduateRut, firstName, lastName, email, phoneNumber)
      .then((response) => {
       //return error if error in response
        if (response.error != null) {
            res.json({
            error: response.error
            });
          } else {
          //else return success
          res.json({
          success: response
                });
            }
      });    
});

网络处理器JS

   registerGraduate: async function (cardId, graduateRut,firstName, lastName, email, phoneNumber) {
      try {


    //connect as admin
    businessNetworkConnection = new BusinessNetworkConnection();
    await businessNetworkConnection.connect('admin@degree');

    //get the factory for the business network
    factory = businessNetworkConnection.getBusinessNetwork().getFactory();

    //create graduate participant
    const graduate = factory.newResource(namespace, 'Graduate', graduateRut);
    graduate.firstName = firstName;
    graduate.lastName = lastName;
    graduate.email = email;
    graduate.phoneNumber = phoneNumber;


    //add graduate participant
    const participantRegistry = await businessNetworkConnection.getParticipantRegistry(namespace + '.Graduate');
    await participantRegistry.add(graduate);

    //issue identity
    const identity = await businessNetworkConnection.issueIdentity(namespace + '.Graduate#' + graduateRut, cardId);

    //import card for identity
    await importCardForIdentity(cardId, identity);

    //disconnect
    await businessNetworkConnection.disconnect('admin@degree');

    return true;
  }
  catch(err) {
    //print and return error
    console.log(err);
    var error = {};
    error.error = err.message;
    return error;
  }

},

我正在跟邮递员测试rest api。我回来的错误是 "error": "Cannot find module './local_connection.json'" 但这种情况只有在我第一次发送post请求时才会发生。第二次错误是 Error: Failed to add object with ID '166438715' in collection with ID 'Participant:org.degree.ucsd.University' as the object already exists .

显然,尽管错误是将数据写入链链,但是如果我试图得到数据,我会得到一个错误,说明 cardid 找不到。

那么,我错过了什么?如果它在本地主机上工作,而不是在google vm上,那么它是身份验证吗?我该怎么解决?

谢谢你的帮助!

编辑!

importCardForIdentity函数:

async function importCardForIdentity(cardName, identity) {

  //use admin connection
  adminConnection = new AdminConnection();
  businessNetworkName = 'degree';

  //declare metadata
  const metadata = {
      userName: identity.userID,
      version: 1,
      enrollmentSecret: identity.userSecret,
      businessNetwork: businessNetworkName
  };

  //get connectionProfile from json, create Idcard
  const connectionProfile = require('./local_connection.json');
  const card = new IdCard(metadata, connectionProfile);

  //import card
  await adminConnection.importCard(cardName, card);
}