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Test3

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commercial-paper/organization/digibank/application/getPaper.js Normal file
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/*
SPDX-License-Identifier: Apache-2.0
*/
/*
* This application has 6 basic steps:
* 1. Select an identity from a wallet
* 2. Connect to network gateway
* 3. Access PaperNet network
* 4. Construct request to query a commercial paper
* 5. Submit transaction
* 6. Process response
*/
'use strict';
// Bring key classes into scope, most importantly Fabric SDK network class
const fs = require('fs');
const yaml = require('js-yaml');
const { FileSystemWallet, Gateway } = require('fabric-network');
const CommercialPaper = require('../contract/lib/paper.js');
// A wallet stores a collection of identities for use
const wallet = new FileSystemWallet('../identity/user/balaji/wallet');
// Main program function
async function main() {
// A gateway defines the peers used to access Fabric networks
const gateway = new Gateway();
// Main try/catch block
try {
// Specify userName for network access
// const userName = 'isabella.issuer@magnetocorp.com';
const userName = 'Admin@org1.example.com';
// Load connection profile; will be used to locate a gateway
let connectionProfile = yaml.safeLoad(fs.readFileSync('../gateway/networkConnection.yaml', 'utf8'));
// Set connection options; identity and wallet
let connectionOptions = {
identity: userName,
wallet: wallet,
discovery: { enabled:false, asLocalhost: true }
};
// Connect to gateway using application specified parameters
console.log('Connect to Fabric gateway.');
await gateway.connect(connectionProfile, connectionOptions);
// Access PaperNet network
console.log('Use network channel: mychannel.');
const network = await gateway.getNetwork('mychannel');
// Get addressability to commercial paper contract
console.log('Use org.papernet.commercialpaper smart contract.');
const contract = await network.getContract('papercontract', 'org.papernet.commercialpaper');
// get commercial paper
console.log('Submit commercial paper getPaper transaction.');
const getPaperResponse = await contract.evaluateTransaction('getPaper', 'MagnetoCorp', '00001');
// process response
console.log('Process getPaper transaction response.');
let paperJSON = JSON.parse(getPaperResponse);
let paper = CommercialPaper.createInstance(paperJSON.issuer, paperJSON.paperNumber, paperJSON.issueDateTime, paperJSON.maturityDateTime, paperJSON.faceValue);
paper.setOwner(paperJSON.owner);
paper.currentState = paperJSON.currentState;
// let paper = CommercialPaper.fromBuffer(getPaperResponse);
let paperState = 'Unknown';
if(paper.isIssued()) {
paperState = 'ISSUED';
} else if(paper.isTrading()){
paperState = 'TRADING';
} else if(paper.isRedeemed()){
paperState = 'REDEEMED';
}
console.log(` +--------- Paper Retrieved ---------+ `);
console.log(` | Paper number: "${paper.paperNumber}"`);
console.log(` | Paper is owned by: "${paper.owner}"`);
console.log(` | Paper is currently: "${paperState}"`);
console.log(` | Paper face value: "${paper.faceValue}"`);
console.log(` | Paper is issued by: "${paper.issuer}"`);
console.log(` | Paper issue on: "${paper.issueDateTime}"`);
console.log(` | Paper matures on: "${paper.maturityDateTime}"`);
console.log(` +-----------------------------------+ `);
console.log('Transaction complete.');
//console.log('Transaction complete.' + JSON.stringify(paper));
} catch (error) {
console.log(`Error processing transaction. ${error}`);
console.log(error.stack);
} finally {
// Disconnect from the gateway
console.log('Disconnect from Fabric gateway.')
gateway.disconnect();
}
}
main().then(() => {
console.log('getPaper program complete.');
}).catch((e) => {
console.log('getPaper program exception.');
console.log(e);
console.log(e.stack);
process.exit(-1);
});