mirror of
https://github.com/hyperledger/fabric-samples.git
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105 lines
2.9 KiB
JavaScript
105 lines
2.9 KiB
JavaScript
/*
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* Copyright IBM Corp. All Rights Reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* This application has 6 basic steps:
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* 1. Select an identity from a wallet
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* 2. Connect to network gateway
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* 3. Access PaperNet network
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* 4. Construct request to issue commercial paper
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* 5. Submit transaction
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* 6. Process response
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*/
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'use strict';
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// Bring key classes into scope, most importantly Fabric SDK network class
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const fs = require('fs');
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const yaml = require('js-yaml');
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const { Wallets, Gateway } = require('fabric-network');
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const CommercialPaper = require('../contract/lib/paper.js');
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// Main program function
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async function main() {
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// A wallet stores a collection of identities for use
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const wallet = await Wallets.newFileSystemWallet('../identity/user/balaji/wallet');
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// A gateway defines the peers used to access Fabric networks
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const gateway = new Gateway();
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// Main try/catch block
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try {
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// Specify userName for network access
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// Specify userName for network access
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const userName = 'balaji';
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// Load connection profile; will be used to locate a gateway
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let connectionProfile = yaml.safeLoad(fs.readFileSync('../gateway/connection-org1.yaml', 'utf8'));
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// Set connection options; identity and wallet
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let connectionOptions = {
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identity: userName,
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wallet: wallet,
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discovery: { enabled:true, asLocalhost: true }
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};
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// Connect to gateway using application specified parameters
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console.log('Connect to Fabric gateway.');
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await gateway.connect(connectionProfile, connectionOptions);
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// Access PaperNet network
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console.log('Use network channel: mychannel.');
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const network = await gateway.getNetwork('mychannel');
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// Get addressability to commercial paper contract
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console.log('Use org.papernet.commercialpaper smart contract.');
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const contract = await network.getContract('papercontract', 'org.papernet.commercialpaper');
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// redeem commercial paper
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console.log('Submit commercial paper redeem transaction.');
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const redeemResponse = await contract.submitTransaction('redeem', 'MagnetoCorp', '00001', 'DigiBank', '2020-11-30');
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// process response
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console.log('Process redeem transaction response.');
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let paper = CommercialPaper.fromBuffer(redeemResponse);
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console.log(`${paper.issuer} commercial paper : ${paper.paperNumber} successfully redeemed with ${paper.owner}`);
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console.log('Transaction complete.');
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} catch (error) {
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console.log(`Error processing transaction. ${error}`);
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console.log(error.stack);
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} finally {
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// Disconnect from the gateway
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console.log('Disconnect from Fabric gateway.')
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gateway.disconnect();
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}
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}
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main().then(() => {
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console.log('Redeem program complete.');
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}).catch((e) => {
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console.log('Redeem program exception.');
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console.log(e);
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console.log(e.stack);
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process.exit(-1);
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});
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