Question

我正在尝试在Hyperledger Composer中建立业务模型。我有2位参与者：供应商和客户以及一项资产，即交货。我有2个事务：createDelivery和receiveDelivery。 createDelivery创建资产，receiveDelivery更改交付状态。

客户具有字段库存，而我的目标是进行设置，以便在通过receiveDelivery交易时，客户资产中的库存字段将通过交货数量进行更新。

尝试调用confirmDelivery时出现错误，错误如下：注意01是客户ID。

这是我的模型文件：

namespace org.example

participant customer identified by CompanyID {

  o String CompanyID
  o String Name
  o Integer Inventory
}

participant vendor identified by CompanyID {

  o String CompanyID
  o String Name
}

asset Delivery identified by DeliveryID {

  o String DeliveryID
  o String Material
  o Integer Quantity
  o DeliveryStatus Status
  --> vendor vendor
  --> customer customer

}

 enum DeliveryStatus {

 o Created
 o Received

}

transaction createDelivery { 

  o String DeliveryID
  o String Material
  o Integer Quantity
  --> vendor vendor
  --> customer customer
}

transaction receiveDelivery { 
  --> Delivery Delivery
}

下面是脚本文件：

'use strict';

/**
 * Create Delivery.
 * @param {org.example.createDelivery} createDelivery 
 * @transaction
 */

 async function createDelivery(createDelivery) { // eslint-disable-line no-unused-vars
    const factory = getFactory();
    const NS = 'org.example';

    var delivery = factory.newResource(NS, 'Delivery', createDelivery.DeliveryID);

    delivery.customer = factory.newRelationship(NS, 'customer', createDelivery.customer.getIdentifier());
    delivery.vendor = factory.newRelationship(NS, 'vendor', createDelivery.vendor.getIdentifier());

    delivery.Material = createDelivery.Material;
    delivery.Quantity = createDelivery.Quantity;
    delivery.Status = "Created";

    //save the asset
    const assetRegistry = await getAssetRegistry(delivery.getFullyQualifiedType());
    await assetRegistry.add(delivery);

 }

  /**
 * Receive Delivery.
 * @param {org.example.receiveDelivery} receiveDelivery 
 * @transaction
 */

 async function receiveDelivery(receiveDelivery) { // eslint-disable-line no-unused-vars
    const factory = getFactory();
    const NS = 'org.example';

    var delivery = receiveDelivery.Delivery
    var quantity = delivery.Quantity
    const customer = await getParticipantRegistry(delivery.customer.getIdentifier());

    customer.Inventory += quantity;
    await customer.update(customer)

    delivery.Status = 'Received'

 }

默认ACL：

rule NetworkAdminUser {
    description: "Grant business network administrators full access to user resources"
    participant: "org.hyperledger.composer.system.NetworkAdmin"
    operation: ALL
    resource: "**"
    action: ALLOW
}

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

rule GrantSysAccess {
     description: "Grant access to all Participants to target system registries"
     participant: "org.hyperledger.composer.system.Participant"
     operation: ALL
     resource: "org.hyperledger.composer.system.**"
     action: ALLOW
   }

我已经尝试解决该错误已有一个小时了，如果您能为我提供帮助，我们将不胜感激。

Answer 1

您的receive交易有一些错误，但是下面的代码应该可以工作。

一些注意事项：

您需要先通过名称空间获取注册表（资产或参与者），然后再尝试更新
然后您需要获取特定客户的客户注册表，然后再尝试进行更新。
对于交付资产，您已经将其作为参数传递了，因此您不需要获取该特定资产
您在客户类别中使用了小写的'c'，在供应商类别中使用了'v'，然后在交付时使用了大写字母'D'，这有点令人困惑。

代码示例

 /**
 * Receive Delivery.
 * @param {org.example.receiveDelivery} receiveDelivery 
 * @transaction
 */

 async function receiveDelivery(receiveDelivery) { // eslint-disable-line no-unused-vars
 //   const factory = getFactory();
 const NS = 'org.example';

 var delivery = receiveDelivery.Delivery;
 var quantity = delivery.Quantity;

 //Get The Customer Participant Registry, get the Specific Customer, then update  
 const customerRegistry = await getParticipantRegistry(NS+'.customer');
 var customer = await customerRegistry.get( delivery.customer.getIdentifier() );
 customer.Inventory += quantity;
 await customerRegistry.update(customer);

 //Get the Delivery Asset registry, then Update   
 const deliveryRegistry = await getAssetRegistry(NS+'.Delivery');
 delivery.Status = 'Received';
 await deliveryRegistry.update(delivery);

错误：集合中ID为“ $ sysregistries”的ID为“ Participant：01”的对象不存在

1 个答案: