初始化nodejs项目
在webapp目录下
npm init
npm install --save fabric-ca-client
npm install --save fabric-client
npm install --save grpc
使用node sdk编写注册admin的逻辑.获取admin的证书信息
vi enrollAdmin.js
'use strict';
/*
* Copyright IBM Corp All Rights Reserved
*
* SPDX-License-Identifier: Apache-2.0
*/
/*
* Enroll the admin user
*/
var Fabric_Client = require('fabric-client');
var Fabric_CA_Client = require('fabric-ca-client');
var path = require('path');
var util = require('util');
var os = require('os');
//
var fabric_client = new Fabric_Client();
var fabric_ca_client = null;
var admin_user = null;
var member_user = null;
var store_path = path.join(__dirname, 'hfc-key-store');
console.log(' Store path:'+store_path);
// create the key value store as defined in the fabric-client/config/default.json 'key-value-store' setting
Fabric_Client.newDefaultKeyValueStore({ path: store_path
}).then((state_store) => {
// assign the store to the fabric client
fabric_client.setStateStore(state_store);
var crypto_suite = Fabric_Client.newCryptoSuite();
// use the same location for the state store (where the users' certificate are kept)
// and the crypto store (where the users' keys are kept)
var crypto_store = Fabric_Client.newCryptoKeyStore({path: store_path});
crypto_suite.setCryptoKeyStore(crypto_store);
fabric_client.setCryptoSuite(crypto_suite);
var tlsOptions = {
trustedRoots: [],
verify: false
};
// be sure to change the http to https when the CA is running TLS enabled
fabric_ca_client = new Fabric_CA_Client('http://localhost:7054', tlsOptions , 'ca.example.com', crypto_suite);
// first check to see if the admin is already enrolled
return fabric_client.getUserContext('admin', true);
}).then((user_from_store) => {
if (user_from_store && user_from_store.isEnrolled()) {
console.log('Successfully loaded admin from persistence');
admin_user = user_from_store;
return null;
} else {
// need to enroll it with CA server
return fabric_ca_client.enroll({
enrollmentID: 'admin',
enrollmentSecret: 'adminpw'
}).then((enrollment) => {
console.log('Successfully enrolled admin user "admin"');
return fabric_client.createUser(
{username: 'admin',
mspid: 'Org1MSP',
cryptoContent: { privateKeyPEM: enrollment.key.toBytes(), signedCertPEM: enrollment.certificate }
});
}).then((user) => {
admin_user = user;
return fabric_client.setUserContext(admin_user);
}).catch((err) => {
console.error('Failed to enroll and persist admin. Error: ' + err.stack ? err.stack : err);
throw new Error('Failed to enroll admin');
});
}
}).then(() => {
console.log('Assigned the admin user to the fabric client ::' + admin_user.toString());
}).catch((err) => {
console.error('Failed to enroll admin: ' + err);
});
使用node sdk编写注册user1的逻辑.获取user1的证书信息
vi registerUser.js
'use strict';
/*
* Copyright IBM Corp All Rights Reserved
*
* SPDX-License-Identifier: Apache-2.0
*/
/*
* Register and Enroll a user
*/
var Fabric_Client = require('fabric-client');
var Fabric_CA_Client = require('fabric-ca-client');
var path = require('path');
var util = require('util');
var os = require('os');
//
var fabric_client = new Fabric_Client();
var fabric_ca_client = null;
var admin_user = null;
var member_user = null;
var store_path = path.join(__dirname, 'hfc-key-store');
console.log(' Store path:'+store_path);
// create the key value store as defined in the fabric-client/config/default.json 'key-value-store' setting
Fabric_Client.newDefaultKeyValueStore({ path: store_path
}).then((state_store) => {
// assign the store to the fabric client
fabric_client.setStateStore(state_store);
var crypto_suite = Fabric_Client.newCryptoSuite();
// use the same location for the state store (where the users' certificate are kept)
// and the crypto store (where the users' keys are kept)
var crypto_store = Fabric_Client.newCryptoKeyStore({path: store_path});
crypto_suite.setCryptoKeyStore(crypto_store);
fabric_client.setCryptoSuite(crypto_suite);
var tlsOptions = {
trustedRoots: [],
verify: false
};
// be sure to change the http to https when the CA is running TLS enabled
fabric_ca_client = new Fabric_CA_Client('http://localhost:7054', null , '', crypto_suite);
// first check to see if the admin is already enrolled
return fabric_client.getUserContext('admin', true);
}).then((user_from_store) => {
if (user_from_store && user_from_store.isEnrolled()) {
console.log('Successfully loaded admin from persistence');
admin_user = user_from_store;
} else {
throw new Error('Failed to get admin.... run enrollAdmin.js');
}
// at this point we should have the admin user
// first need to register the user with the CA server
return fabric_ca_client.register({enrollmentID: 'user1', affiliation: 'org1.department1',role: 'client'}, admin_user);
}).then((secret) => {
// next we need to enroll the user with CA server
console.log('Successfully registered user1 - secret:'+ secret);
return fabric_ca_client.enroll({enrollmentID: 'user1', enrollmentSecret: secret});
}).then((enrollment) => {
console.log('Successfully enrolled member user "user1" ');
return fabric_client.createUser(
{username: 'user1',
mspid: 'Org1MSP',
cryptoContent: { privateKeyPEM: enrollment.key.toBytes(), signedCertPEM: enrollment.certificate }
});
}).then((user) => {
member_user = user;
return fabric_client.setUserContext(member_user);
}).then(()=>{
console.log('User1 was successfully registered and enrolled and is ready to interact with the fabric network');
}).catch((err) => {
console.error('Failed to register: ' + err);
if(err.toString().indexOf('Authorization') > -1) {
console.error('Authorization failures may be caused by having admin credentials from a previous CA instance.\n' +
'Try again after deleting the contents of the store directory '+store_path);
}
});
query hyperledger fabirc的信息
vi query.js
'use strict';
var Fabric_Client = require('fabric-client');
var path = require('path');
var util = require('util');
var os = require('os');
var fabric_client = new Fabric_Client();
// 设置fabric网络
var channel = fabric_client.newChannel('mychannel');
var peer = fabric_client.newPeer('grpc://localhost:7051');
channel.addPeer(peer);
//
var member_user = null;
var store_path = path.join(__dirname, 'hfc-key-store');
console.log('Store path:'+store_path);
var tx_id = null;
var query =async (fcn,args)=>{
try {
// create the key value store as defined in the fabric-client/config/default.json 'key-value-store' setting
var state_store = await Fabric_Client.newDefaultKeyValueStore({path: store_path});
// assign the store to the fabric client
fabric_client.setStateStore(state_store);
var crypto_suite = Fabric_Client.newCryptoSuite();
// use the same location for the state store (where the users' certificate are kept)
// and the crypto store (where the users' keys are kept)
var crypto_store = Fabric_Client.newCryptoKeyStore({path: store_path});
crypto_suite.setCryptoKeyStore(crypto_store);
fabric_client.setCryptoSuite(crypto_suite);
// get the enrolled user from persistence, this user will sign all requests
var user_from_store = await fabric_client.getUserContext('user1', true);
if (user_from_store && user_from_store.isEnrolled()) {
console.log('Successfully loaded user1 from persistence');
member_user = user_from_store;
} else {
throw new Error('Failed to get user1.... run registerUser.js');
}
// queryCar chaincode function - requires 1 argument, ex: args: ['FISH0'],
// queryAllCars chaincode function - requires no arguments , ex: args: [''],
const request = {
//targets : --- letting this default to the peers assigned to the channel
chaincodeId: 'fishcc',
fcn: fcn,
args: args
};
// send the query proposal to the peer
var query_responses = await channel.queryByChaincode(request);
console.log("Query has completed, checking results");
// query_responses could have more than one results if there multiple peers were used as targets
if (query_responses && query_responses.length == 1) {
if (query_responses[0] instanceof Error) {
console.error("error from query = ", query_responses[0]);
} else {
console.log("Response is ", query_responses[0].toString());
}
} else {
console.log("No payloads were returned from query");
}
}catch (err){
console.error('Failed to query successfully :: ' + err);
}
};
console.log(process.argv[2]);
console.log(process.argv[3]);
var args = new Array(process.argv[3]);
query(process.argv[2],args);
安装express服务器(nodejs做的web应用)
npm install --save express
vi web.js
const express = require('express')
const app = express()
//设置允许跨域访问该服务.
app.all('*', function (req, res, next) {
res.header('Access-Control-Allow-Origin', '*');
//Access-Control-Allow-Headers ,可根据浏览器的F12查看,把对应的粘贴在这里就行
res.header('Access-Control-Allow-Headers', 'Content-Type');
res.header('Access-Control-Allow-Methods', '*');
res.header('Content-Type', 'application/json;charset=utf-8');
next();
});
//之前的query.js代码
var Fabric_Client = require('fabric-client');
var path = require('path');
var util = require('util');
var os = require('os');
var fabric_client = new Fabric_Client();
// 设置fabric网络
var channel = fabric_client.newChannel('mychannel');
var peer = fabric_client.newPeer('grpc://localhost:7051');
channel.addPeer(peer);
//
var member_user = null;
var store_path = path.join(__dirname, 'hfc-key-store');
console.log('Store path:'+store_path);
var tx_id = null;
var query =async (fcn,args)=>{
try {
// create the key value store as defined in the fabric-client/config/default.json 'key-value-store' setting
var state_store = await Fabric_Client.newDefaultKeyValueStore({path: store_path});
// assign the store to the fabric client
fabric_client.setStateStore(state_store);
var crypto_suite = Fabric_Client.newCryptoSuite();
// use the same location for the state store (where the users' certificate are kept)
// and the crypto store (where the users' keys are kept)
var crypto_store = Fabric_Client.newCryptoKeyStore({path: store_path});
crypto_suite.setCryptoKeyStore(crypto_store);
fabric_client.setCryptoSuite(crypto_suite);
// get the enrolled user from persistence, this user will sign all requests
var user_from_store = await fabric_client.getUserContext('user1', true);
if (user_from_store && user_from_store.isEnrolled()) {
console.log('Successfully loaded user1 from persistence');
member_user = user_from_store;
} else {
throw new Error('Failed to get user1.... run registerUser.js');
}
// queryCar chaincode function - requires 1 argument, ex: args: ['FISH0'],
// queryAllCars chaincode function - requires no arguments , ex: args: [''],
const request = {
//targets : --- letting this default to the peers assigned to the channel
chaincodeId: 'fishcc',
fcn: 'queryAllFish',
args: ['']
};
// send the query proposal to the peer
var query_responses = await channel.queryByChaincode(request);
console.log("Query has completed, checking results");
// query_responses could have more than one results if there multiple peers were used as targets
if (query_responses && query_responses.length == 1) {
if (query_responses[0] instanceof Error) {
console.error("error from query = ", query_responses[0]);
} else {
console.log("Response is ", query_responses[0].toString());
return query_responses[0].toString();
}
} else {
console.log("No payloads were returned from query");
}
}catch (err){
console.error('Failed to query successfully :: ' + err);
}
};
console.log(process.argv[2]);
console.log(process.argv[3]);
var args = new Array(process.argv[3]);
query(process.argv[2],args);
app.get('/queryAllFish',async (req, res) => res.send(await query()))
app.listen(3000, () => console.log('Example app listening on port 3000!'))