Hyperledger Composer BusinessNetwork 连接 - 0.14.3 无法连接

Question

我正在尝试使用 BusinessNetworkConnection for NodeJS，但如何从 playground 上部署的 BNA 获取凭据并将其保存在我的服务器目录中？

我得到

2017-11-03T13:07:32.83-0400 [APP/PROC/WEB/0] ERR (node:62) 
UnhandledPromiseRejectionWarning: Unhandled promise rejection 
(rejection id: 1): Error: Error trying login and get user Context. 
Error: Error trying to enroll user or load channel configuration. 
Error: Enrollment failed with errors 
[[{"code":400,"message":"Authorization failure"}]]

当我尝试使用代码时

const BusinessNetworkConnection = require("composer-client").BusinessNetworkConnection;
this.businessNetworkConnection = new BusinessNetworkConnection();
this.CONNECTION_PROFILE_NAME = "ibm-bc-org1";
this.businessNetworkIdentifier = "giveback";
this.businessNetworkConnection
  .connect(
    this.CONNECTION_PROFILE_NAME,
    this.businessNetworkIdentifier,
    "admin",
    "adminpw"
  )
  .then(result => {
    this.businessNetworkDefinition = result;
    console.log("BusinessNetworkConnection: ", result);
  })

我有一个目录 /home/vcap/app/.composer-connection-profiles/ibm-bc-org1，其中有一个 connection.json 文件引用 /home/vcap/app/.composer-credentials/ibm-bc-org1 作为我的凭据。该代码适用于 composer@0.13.2，但现在我转到了 composer@0.14.3。我删除了以前的凭据并创建了一个新的游乐场等，一切都是新鲜干净的。

Answer 1

当发生这种情况时，有一种解决方法。因为我正在尝试连接 Composer 使用 admin || adminpw 创建的凭据。您只需在模型文件中定义一个新参与者，然后授予该参与者系统权限以查询和侦听 Historian 发出的事件。

例如在你的 model.cto:

participant ServerAdmin identified by serverhash {
  // ServerAdmin is a type of participant 
  o String serverhash
}

并在您的 permissions.acl 中添加：

rule ServerAdminUser {
  description: "Grant business network administrators full access to 
  user resources"
  participant: "org.acme.sample.ServerAdmin"
  operation: ALL
  resource: "**"
  action: ALLOW
}

rule ServerAdminSystem {
  description: "Grant business network administrators full access to system resources"
  participant: "org.acme.sample.ServerAdmin"
  operation: ALL
  resource: "org.hyperledger.composer.system.**"
  action: ALLOW
}

然后在 Composer 在 playground 上部署网络后，您可以通过 REST 添加此参与者 API，并为其颁发新身份。这将为您提供 User ID 和 User Secret，您可以在 BusinessNetworkConnection.connect()

中使用它们

Hyperledger Composer BusinessNetwork 连接 - 0.14.3 无法连接

Hyperledger Composer BusinessNetwork Connection - 0.14.3 cannot connect

node.js

hyperledger

hyperledger-composer