出现错误:http:从Hyperledger Composer中的“事务处理器"功能读取封闭的响应正文 [英] Getting Error: http: read on closed response body from Transaction Processor function in Hyperledger Composer

问题描述

我有一个运行有简单BNA的结构网络.该BNA定义了两种类型的参与者.公司和个人.在这里，每个人与公司都有关系，如下所示(cto文件):

I've a fabric network running with a simple BNA. This BNA defines two types of participants viz. Corporate and Person. Here, each Person has a relationship with the corporate as shown below (cto file):

participant Corporate identified by corporateId {
    o String corporateId
    o String corporateName
}
participant Person identified by personId {
    o String personId
    --> Corporate corporate
}

我要做什么:

1. 使用事务处理程序功能创建公司:成功
2. 使用事务处理器功能创建人员:失败

以下是#2的交易处理器功能片段:

Following is the snippet from transaction processor function for #2:

let corporateIdExpected = personDetails.corporate;

if(corporateIdExpected && corporateIdExpected != '') {
    let corporateRetrieved = await query("GetCorporateByCorporateId", {corporateId: corporateIdExpected});
    if(!corporateRetrieved || corporateRetrieved == '') {
        throw new Error("Corporate details not valid. Please check if your corporate is present on the network.");
    }
}

我的querys.qry中的代码段:

Snippet from my queries.qry:

query GetCorporateByCorporateId {
  description: "Returns all corporates in the registry"
  statement:  
      SELECT  org.samplenetwork.participants.Corporate
          WHERE (corporateId == _$corporateId)
}

因此，尝试#2时出​​现以下错误:

So, I get the following error when I try the #2:

错误:2 UNKNOWN:执行链代码时出错:事务以失败返回:错误:错误:http:在关闭的响应正文上读取

Error: 2 UNKNOWN: error executing chaincode: transaction returned with failure: Error: Error: http: read on closed response body

但是，当我尝试直接从招摇中执行查询时，它会成功运行.

However, when I try to execute the query directly from the swagger, it runs successfully.

我正在使用:

超级账本面料:1.1 Hyperledger Composer:0.19.8

Hyperledger Fabric: 1.1 Hyperledger Composer: 0.19.8

我为此错过任何检查或步骤吗?

Am I missing out any checks or steps for this one?

推荐答案

第2项-您实际上不必每次都执行命名查询.

for item 2 - you don't really need to execute a named query each time.

您可以按以下方式进行等效检查(他已经存在吗?")(其中下面的trxn是您的事务定义中定义的事务对象，等等):

You can do the equivalent check ("does he exist already?") as follows (where trxn below is the transaction object defined in your transaction definition etc):

const personRegistry = await getParticipantRegistry('org.acme.example.Person');
console.log("The person identifier to check is " + trxn.corporate.getIdentifier() ) 

const exists = await personRegistry.exists(trxn.corporate.getIdentifier() ) ;

console.log("exists is set to " + exists); // boolean

if (exists)
        console.log("he exists") 
else
        console.log("he doesn't exist");

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