invoke.js

/*
 * SPDX-License-Identifier: Apache-2.0
 */

'use strict';

const { FileSystemWallet, Gateway } = require('fabric-network');
const fs = require('fs');
const path = require('path');

const ccpPath = path.resolve(__dirname, '..', '..', 'basic-network', 'connection.json');
const ccpJSON = fs.readFileSync(ccpPath, 'utf8');
const ccp = JSON.parse(ccpJSON);

async function main() {
    try {

        // Create a new file system based wallet for managing identities.
        const walletPath = path.join(process.cwd(), 'wallet');
        const wallet = new FileSystemWallet(walletPath);
        console.log(`Wallet path: ${walletPath}`);

        // Check to see if we've already enrolled the user.
        const userExists = await wallet.exists('user1');
        if (!userExists) {
            console.log('An identity for the user "user1" does not exist in the wallet');
            console.log('Run the registerUser.js application before retrying');
            return;
        }

        // Create a new gateway for connecting to our peer node.
        const gateway = new Gateway();
        await gateway.connect(ccp, { wallet, identity: 'user1', discovery: { enabled: false } });

        // Get the network (channel) our contract is deployed to.
        const network = await gateway.getNetwork('mychannel');

        // Get the contract from the network.
        const contract = network.getContract('fabcar');

        // Submit the specified transaction.
        // createCar transaction - requires 5 argument, ex: ('createCar', 'CAR12', 'Honda', 'Accord', 'Black', 'Tom')
        // changeCarOwner transaction - requires 2 args , ex: ('changeCarOwner', 'CAR10', 'Dave')
        //await contract.submitTransaction('changeCarOwner', 'CAR12', 'Dave');

        const criminality = [{
            charge: 'Murder',
            jailtime: 2,
            date: '2013-04-13'
        },
        {
            charge: 'Fraud',
            jailtime: 4,
            date: '2013-04-13'
        },
        ]
        const newRecord = {
            charge: 'Hate Speech',
            jailtime: 7,
            date: '2013-05-13'
        }
        const personal_details = {
            birth: '2000-04-01',
            fingerprint: 's435457hfgdgh45taf',
            address: 'Kentucky'
        }

        await contract.submitTransaction(
            'createCar',
            `PERSON${personNumber}`,
            name,
            JSON.stringify(criminality),
            JSON.stringify(personal_details)
        );
        console.log('Transaction has been submitted');

        await contract.submitTransaction(
            'changeCarOwner',
            'PERSON3',
            JSON.stringify(newRecord),
        );
        console.log('Transaction has been submitted');


        // Disconnect from the gateway.
        await gateway.disconnect();

    } catch (error) {
        console.error(`Failed to submit transaction: ${error}`);
        process.exit(1);
    }
}