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https://github.com/hyperledger/fabric-samples.git
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5be62b5200
The TypeScript version of the FabCar app uses a dodgy "as any" cast to get around a bug that has been fixed; turns out the wrong name was being used (should have been asLocalhost, not useLocalhost). Note, because basic-network does not use TLS, we cannot use service discovery. We can enable service discovery when we migrate FabCar to BYFN instead. Change-Id: I36dad1c8cc7380ca1123805ae3e74fe1e7665b40 Signed-off-by: Simon Stone <sstone1@uk.ibm.com>
53 lines
1.9 KiB
JavaScript
53 lines
1.9 KiB
JavaScript
/*
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* SPDX-License-Identifier: Apache-2.0
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*/
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'use strict';
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const { FileSystemWallet, Gateway } = require('fabric-network');
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const fs = require('fs');
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const path = require('path');
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const ccpPath = path.resolve(__dirname, '..', '..', 'basic-network', 'connection.json');
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const ccpJSON = fs.readFileSync(ccpPath, 'utf8');
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const ccp = JSON.parse(ccpJSON);
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async function main() {
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try {
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// Create a new file system based wallet for managing identities.
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const walletPath = path.join(process.cwd(), 'wallet');
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const wallet = new FileSystemWallet(walletPath);
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console.log(`Wallet path: ${walletPath}`);
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// Check to see if we've already enrolled the user.
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const userExists = await wallet.exists('user1');
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if (!userExists) {
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console.log('An identity for the user "user1" does not exist in the wallet');
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console.log('Run the registerUser.js application before retrying');
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return;
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}
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// Create a new gateway for connecting to our peer node.
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const gateway = new Gateway();
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await gateway.connect(ccp, { wallet, identity: 'user1', discovery: { enabled: false } });
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// Get the network (channel) our contract is deployed to.
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const network = await gateway.getNetwork('mychannel');
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// Get the contract from the network.
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const contract = network.getContract('fabcar');
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// Evaluate the specified transaction.
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// queryCar transaction - requires 1 argument, ex: ('queryCar', 'CAR4')
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// queryAllCars transaction - requires no arguments, ex: ('queryAllCars')
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const result = await contract.evaluateTransaction('queryAllCars');
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console.log(`Transaction has been evaluated, result is: ${result.toString()}`);
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} catch (error) {
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console.error(`Failed to evaluate transaction: ${error}`);
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process.exit(1);
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}
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}
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main();
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