这篇文章将为大家详细讲解有关hyperledger Composer如何实现转账功能,小编觉得挺实用的,因此分享给大家做个参考,希望大家阅读完这篇文章后可以有所收获。
/* * @param {org.example.mynetwork.SetupDemo} setupDemo
* @transaction
*/
async function initializationFun(setupDemo) {
const NS = "org.example.mynetwork";
const factory = getFactory();
//创建三个参与者
var zhangsan = factory.newResource(NS, "Person", 'zhangsan001')
zhangsan.name = "张三";
zhangsan.balance = 100;
var lisi = factory.newResource(NS, "Person", 'lisi')
lisi.name = "李四";
lisi.balance = 100;
var wangwu = factory.newResource(NS, "Person", 'wangwu')
wangwu.name = "王五";
wangwu.balance = 100;
const partRegistry = await getParticipantRegistry(NS+'.Person')
await partRegistry.add(zhangsan);
await partRegistry.add(lisi);
await partRegistry.add(wangwu);
//创建资产
var car = factory.newResource(NS, "Car", '川A0001')
car.personId = zhangsan.id;
car.color = "red"
const assetRegistry = await getAssetRegistry(NS+'.Car');
await assetRegistry.add(car)
}
/**
* Sample transaction
transaction TransactionCar{
* @param {org.example.mynetwork.TransactionCar} transactionCar
* @transaction
*/
async function transactionCarFun(transactionCar){
const NS = "org.example.mynetwork";
const from = transactionCar.from;
const to = transactionCar.to;
const price = transactionCar.price;
from.balance = from.balance + price;
to.balance = to.balance - price;
const partRegistry = await getParticipantRegistry(NS+'.Person')
await partRegistry.update(from);
await partRegistry.update(to);
debugger
const car = transactionCar.car;
car.personId = to.id;
if(!car.transactionCars){
car.transactionCars = []
}
car.transactionCars.push(transactionCar)
const assetRegistry = await getAssetRegistry(NS+".Car");
await assetRegistry.update(car);
}
/**
* Write your model definitions here
*/
namespace org.example.mynetwork
participant SampleParticipant identified by participantId {
o String participantId
o String firstName
o String lastName
}
asset SampleAsset identified by assetId {
o String assetId
--> SampleParticipant owner
o String value
}
transaction SampleTransaction {
--> SampleAsset asset
o String newValue
}
event SampleEvent {
--> SampleAsset asset
o String oldValue
o String newValue
}
participant Person identified by id {
o String id
o String name
o Double balance
}
abstract asset Vehicle identified by licensePlate {
o String licensePlate
o String color
}
asset Car extends Vehicle {
o String personId
o TransactionCar[] transactionCars optional
}
transaction SetupDemo {}
transaction TransactionCar{
o Double price
o String car
o String from
o String to
}
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Sample access control list.
*/
rule Default {
description: "Allow all participants access to all resources"
participant: "ANY"
operation: ALL
resource: "org.example.mynetwork.*"
action: ALLOW
}
rule SystemACL {
description: "System ACL to permit all access"
participant: "org.hyperledger.composer.system.Participant"
operation: ALL
resource: "org.hyperledger.composer.system.**"
action: ALLOW
}
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
}
{
"$class": "org.example.mynetwork.TransactionCar",
"price": 10,
"car": "川A0001",
"from": "zhangsan001",
"to": "lisi"
}
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原文链接:https://my.oschina.net/u/3688108/blog/1802578