mirror of
https://github.com/hyperledger/fabric-samples.git
synced 2026-06-26 03:25:09 +00:00
Updated ci pipelines to include the app
Readme update Wait for events to complete Refactor code for events replay Signed-off-by: sapthasurendran <saptha.surendran@ibm.com>
This commit is contained in:
sapthasurendran
parent
e3b52cda75
commit
37ead7dd25
5 changed files with 164 additions and 286 deletions
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@ -61,6 +61,11 @@ Like other samples, the Fabric test network is used to deploy and run this sampl
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# To run the Go sample application
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cd application-gateway-go
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go run .
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# To run the Typescript sample application
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cd application-gateway-typescript
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npm install
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npm start
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```
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## Clean up
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@ -19,6 +19,7 @@
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"author": "Hyperledger",
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"license": "Apache-2.0",
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"dependencies": {
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"@grpc/grpc-js": "^1.5.0",
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"@hyperledger/fabric-gateway": "^1.0.0"
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},
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"devDependencies": {
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@ -4,60 +4,19 @@
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* SPDX-License-Identifier: Apache-2.0
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*/
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// pre-requisites:
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// - fabric-sample two organization test-network setup with two peers, ordering service,
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// and 2 certificate authorities
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// ===> from directory test-network
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// ./network.sh up createChannel -ca
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//
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// - Use the asset-transfer-events/chaincode-javascript chaincode deployed on
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// the channel "mychannel". The following deploy command will package, install,
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// approve, and commit the javascript chaincode, all the actions it takes
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// to deploy a chaincode to a channel.
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// ===> from directory test-network
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// ./network.sh deployCC -ccn events -ccp ../asset-transfer-events/chaincode-javascript/ -ccl javascript -ccep "OR('Org1MSP.peer','Org2MSP.peer')"
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//
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// - Be sure that node.js is installed
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// ===> from directory asset-transfer-events/application-javascript
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// node -v
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// - npm installed code dependencies
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// ===> from directory asset-transfer-events/application-javascript
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// npm install
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// - to build this test application
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// ===> from directory asset-transfer-events/application-javascript
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// npm prepare
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// - to run this test application
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// ===> from directory asset-transfer-events/application-javascript
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// npm start
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import * as grpc from '@grpc/grpc-js';
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import { connect, Contract, Identity, Network, Signer, signers } from '@hyperledger/fabric-gateway';
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import * as crypto from 'crypto';
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import { promises as fs } from 'fs';
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import * as path from 'path';
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import { ChaincodeEvent, CloseableAsyncIterable, connect, Contract, GatewayError, Network } from '@hyperledger/fabric-gateway';
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import { TextDecoder } from 'util';
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import { newGrpcConnection, newIdentity, newSigner } from './connect';
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const channelName = 'mychannel';
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const chaincodeName = 'events';
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const mspId = 'Org1MSP';
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// Path to crypto materials.
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const cryptoPath = path.resolve(__dirname, '..', '..', '..', 'test-network', 'organizations', 'peerOrganizations', 'org1.example.com');
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// Path to user private key directory.
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const keyDirectoryPath = path.resolve(cryptoPath, 'users', 'User1@org1.example.com', 'msp', 'keystore');
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// Path to user certificate.
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const certPath = path.resolve(cryptoPath, 'users', 'User1@org1.example.com', 'msp', 'signcerts', 'cert.pem');
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// Path to peer tls certificate.
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const tlsCertPath = path.resolve(cryptoPath, 'peers', 'peer0.org1.example.com', 'tls', 'ca.crt');
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// Gateway peer endpoint.
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const peerEndpoint = 'localhost:7051';
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const utf8Decoder = new TextDecoder();
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let assetId = `asset${Date.now()}`;
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const now = Date.now();
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const assetId = `asset${now}`;
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async function main(): Promise<void> {
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// The gRPC client connection should be shared by all Gateway connections to this endpoint.
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@ -67,10 +26,23 @@ async function main(): Promise<void> {
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client,
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identity: await newIdentity(),
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signer: await newSigner(),
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evaluateOptions: () => {
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return { deadline: Date.now() + 5000 }; // 5 seconds
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},
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endorseOptions: () => {
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return { deadline: Date.now() + 15000 }; // 15 seconds
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},
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submitOptions: () => {
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return { deadline: Date.now() + 5000 }; // 5 seconds
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},
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commitStatusOptions: () => {
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return { deadline: Date.now() + 60000 }; // 1 minute
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},
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});
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try {
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let events: CloseableAsyncIterable<ChaincodeEvent> | undefined;
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try {
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// Get a network instance representing the channel where the smart contract is deployed.
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const network = gateway.getNetwork(channelName);
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@ -78,288 +50,135 @@ async function main(): Promise<void> {
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const contract = network.getContract(chaincodeName);
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//Start Listening to events.
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startEventListening(network)
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events = await startEventListening(network);
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// Create a new asset on the ledger.
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await createAsset(contract);
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const firstBlockNumber = await createAsset(contract);
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// Update an existing asset asynchronously.
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await transferAssetAsync(contract);
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// Update an existing asset.
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await updateAsset(contract)
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// Get the asset details by assetID.
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await readAssetByID(contract);
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// Transfer an existing asset.
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await transferAsset(contract);
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// Delete asset by assetID.
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await deleteAssetByID(contract);
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// Update an asset which does not exist.
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await updateNonExistentAsset(contract)
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console.log('************* BLOCK EVENTS with PRIVATE DATA **************');
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//Generate new assetID
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assetId = `asset${Date.now()}`;
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// Create a new asset with private data on the ledger.
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await createAssetPrivate(contract);
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// Update an existing asset with private data asynchronously.
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await transferAssetAsyncPrivate(contract);
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// Get the asset details along with the private data by assetID.
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await readAssetByIDPrivate(contract);
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// Replay all the events received.
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await replayChaincodeEvents(network,firstBlockNumber)
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} finally {
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events?.close();
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gateway.close();
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client.close();
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}
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}
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main().catch(error => console.error('******** FAILED to run the application:', error));
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main().catch(error => {
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console.error('******** FAILED to run the application:', error);
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process.exitCode = 1;
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});
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async function newGrpcConnection(): Promise<grpc.Client> {
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const tlsRootCert = await fs.readFile(tlsCertPath);
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const tlsCredentials = grpc.credentials.createSsl(tlsRootCert);
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return new grpc.Client(peerEndpoint, tlsCredentials, {
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'grpc.ssl_target_name_override': 'peer0.org1.example.com',
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});
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}
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/**
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* Start listening to events.
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*/
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async function startEventListening(network: Network): Promise<CloseableAsyncIterable<ChaincodeEvent>> {
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console.log('\n*** Start chaincode event listening\n');
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async function newIdentity(): Promise<Identity> {
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const credentials = await fs.readFile(certPath);
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return { mspId, credentials };
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}
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async function newSigner(): Promise<Signer> {
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const files = await fs.readdir(keyDirectoryPath);
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const keyPath = path.resolve(keyDirectoryPath, files[0]);
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const privateKeyPem = await fs.readFile(keyPath);
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const privateKey = crypto.createPrivateKey(privateKeyPem);
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return signers.newPrivateKeySigner(privateKey);
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}
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async function startEventListening(network: Network) {
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console.log('Read chaincode events');
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const events = await network.getChaincodeEvents(chaincodeName);
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readEvents(events);
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return events;
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}
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/**
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* Read events.
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*/
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async function readEvents(events: CloseableAsyncIterable<ChaincodeEvent>): Promise<void> {
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try {
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for await (const event of events) {
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const payload = utf8Decoder.decode(event.payload);
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console.log(`Received event name: ${event.eventName}, payload: ${payload}, txID: ${event.transactionId}, blockNumber:${event.blockNumber}`);
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console.log(`\n<-- Chaincode event received, name: ${event.eventName}, payload: ${payload}, txID: ${event.transactionId}, blockNumber:${event.blockNumber}`);
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}
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} catch (error: unknown) {
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if (!(error instanceof GatewayError) || error.code !== grpc.status.CANCELLED) {
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throw error;
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}
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} finally {
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// Ensure event iterator is closed when done reading.
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events.close();
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}
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}
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/**
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* Submit a transaction synchronously, blocking until it has been committed to the ledger.
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* Submit a transaction asynchronously to create a new asset.
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*/
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async function createAsset(contract: Contract): Promise<void> {
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console.log('\n--> Submit Transaction: CreateAsset, creates new asset with ID, Color, Size, Owner and AppraisedValue arguments');
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async function createAsset(contract: Contract): Promise<bigint> {
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console.log(`\n --> Submit Transaction: CreateAsset, creates ${assetId} owned by Tom with appraised value 100`);
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await contract.submitTransaction(
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'CreateAsset',
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assetId,
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'yellow',
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'5',
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'Tom',
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'1300',
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);
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const result = await contract.submitAsync('CreateAsset',
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{arguments: [assetId,'yellow','5','Tom','100',]});
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console.log('*** Transaction committed successfully');
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}
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/**
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* Submit transaction asynchronously, allowing the application to process the smart contract response (e.g. update a UI)
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* while waiting for the commit notification.
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*/
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async function transferAssetAsync(contract: Contract): Promise<void> {
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console.log('\n--> Async Submit Transaction: TransferAsset, updates existing asset owner');
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const commit = await contract.submitAsync('TransferAsset', {
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arguments: [assetId, 'Saptha'],
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});
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const oldOwner = utf8Decoder.decode(commit.getResult());
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console.log(`*** Successfully submitted transaction to transfer ownership from ${oldOwner} to Saptha`);
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console.log('*** Waiting for transaction commit');
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const status = await commit.getStatus();
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const status = await result.getStatus();
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if (!status.successful) {
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throw new Error(`Transaction ${status.transactionId} failed to commit with status code ${status.code}`);
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throw new Error(`failed to commit transaction ${status.transactionId} with status code ${status.code}`);
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}
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console.log('*** Transaction committed successfully');
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console.log('\n*** CreateAsset committed successfully\n')
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return status.blockNumber;
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}
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/**
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* Submit transaction synchronously, to updateAsset the asset appraised value.
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*/
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async function updateAsset(contract: Contract): Promise<void> {
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console.log(`\n--> Submit transaction: UpdateAsset, ${assetId} update appraised value to 200`);
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await contract.submitTransaction('UpdateAsset',
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assetId,'yellow','5','Tom','200',);
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console.log('\n*** UpdateAsset committed successfully\n')
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}
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// Evaluate a transaction to query ledger state by given ID.
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async function readAssetByID(contract: Contract): Promise<void> {
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console.log('\n--> Evaluate Transaction: ReadAsset, function returns asset attributes');
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/**
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* Submit transaction synchronously, to transfer the asset.
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*/
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async function transferAsset(contract: Contract): Promise<void> {
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console.log(`\n--> Submit transaction: TransferAsset, ${assetId} to Saptha\n`);
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const resultBytes = await contract.evaluateTransaction('ReadAsset', assetId);
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await contract.submitTransaction('TransferAsset',
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assetId, 'Saptha',);
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const resultJson = utf8Decoder.decode(resultBytes);
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const result = JSON.parse(resultJson);
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checkAsset(mspId, result,'yellow','5','Saptha','1300')
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console.log('*** Result:', result);
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console.log('\n*** TransferAsset committed successfully\n')
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}
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/**
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* Submit a transaction synchronously to delete an asset by ID.
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*/
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async function deleteAssetByID(contract:Contract): Promise<void>{
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console.log('\n--> Submit Transaction: DeleteAsset asset70');
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console.log(`\n--> Submit transaction: DeleteAsset ${assetId}`);
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await contract.submitTransaction(
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'DeleteAsset',
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await contract.submitTransaction('DeleteAsset',
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assetId
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);
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console.log('*** Transaction committed successfully');
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console.log('\n*** DeleteAsset committed successfully\n')
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}
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/**
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* submitTransaction() will throw an error containing details of any error responses from the smart contract.
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* Replay all the events from the start block.
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*/
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async function updateNonExistentAsset(contract: Contract): Promise<void>{
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console.log('\n--> Submit Transaction: UpdateAsset asset70, asset70 does not exist and should return an error');
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async function replayChaincodeEvents(network:Network,startBlock:bigint):Promise<void>{
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try {
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await contract.submitTransaction(
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'UpdateAsset',
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'asset70',
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'blue',
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'5',
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'Tomoko',
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'300',
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);
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console.log('******** FAILED to return an error');
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} catch (error) {
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console.log('*** Successfully caught the error: \n', error);
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}
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}
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/**
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* Verify asset details.
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*/
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function checkAsset(mspId:string, asset:{
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ID: string,
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Color: string,
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Size: string,
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Owner: string,
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AppraisedValue: string,
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asset_properties:{
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object_type: string,
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asset_id: string,
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Price: string,
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salt: string
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}
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}, color:string, size:string, owner:string, appraisedValue:string, price?:string) {
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console.log(`<-- Query results from ${mspId}`);
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console.log(`*** verify asset ${asset.ID}`);
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if (asset) {
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if (asset.Color === color) {
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console.log(`*** asset ${asset.ID} has color ${asset.Color}`);
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} else {
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console.log(`*** asset ${asset.ID} has color of ${asset.Color}`);
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}
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if (asset.Size === size) {
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console.log(`*** asset ${asset.ID} has size ${asset.Size}`);
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} else {
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console.log(`*** Failed size check from ${mspId} - asset ${asset.ID} has size of ${asset.Size}`);
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}
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if (asset.Owner === owner) {
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console.log(`*** asset ${asset.ID} owned by ${asset.Owner}`);
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} else {
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console.log(`*** Failed owner check from ${mspId} - asset ${asset.ID} owned by ${asset.Owner}`);
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}
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if (asset.AppraisedValue === appraisedValue) {
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console.log(`*** asset ${asset.ID} has appraised value ${asset.AppraisedValue}`);
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} else {
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console.log(`*** Failed appraised value check from ${mspId} - asset ${asset.ID} has appraised value of ${asset.AppraisedValue}`);
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}
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if (price) {
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if (asset.asset_properties && asset.asset_properties.Price === price) {
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console.log(`*** asset ${asset.ID} has price ${asset.asset_properties.Price}`);
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} else {
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console.log(`*** Failed price check from ${mspId} - asset ${asset.ID} has price of ${asset.asset_properties.Price}`);
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}
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}
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}
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}
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/**
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* Submit transaction, blocking until the transaction has been committed on the ledger.
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The 'transient' data will not get written to the ledger, and is used to send sensitive data to the trusted endorsing peers.
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The gateway will only send this to peers that are included in the ownership policy of all collections accessed by the chaincode function.
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*/
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async function createAssetPrivate(contract: Contract): Promise<void> {
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console.log('\n--> Submit Transaction: CreateAsset, creates new asset with ID, Color, Size, Owner and AppraisedValue arguments');
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// create the private data with salt and assign to the transaction
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const asset_properties = {
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object_type: 'asset_properties',
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asset_id: assetId,
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Price: '90',
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salt: Buffer.from(Date.now().toString()).toString('hex')
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};
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await contract.submit(
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'CreateAsset',
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{ arguments:[assetId, 'blue', '10', 'James', '100'],
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transientData: asset_properties,
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endorsingOrganizations: [mspId]
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}
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);
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|
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console.log('*** Transaction committed successfully');
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||||
}
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|
||||
/**
|
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* Submit transaction asynchronously, allowing the application to process the smart contract response (e.g. update a UI)
|
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* while waiting for the commit notification.
|
||||
*/
|
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async function transferAssetAsyncPrivate(contract: Contract): Promise<void> {
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console.log('\n--> Async Submit Transaction: TransferAsset, updates existing asset owner');
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// update the private data with new salt and assign to the transaction
|
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const asset_properties = {
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object_type: 'asset_properties',
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asset_id: assetId,
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Price: '90',
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salt: Buffer.from(Date.now().toString()).toString('hex')
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};
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const commit = await contract.submitAsync('TransferAsset', {
|
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arguments: [assetId, 'David'],
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transientData: asset_properties,
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endorsingOrganizations: [mspId]
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const events = await network.getChaincodeEvents(chaincodeName, {
|
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startBlock
|
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});
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const oldOwner = utf8Decoder.decode(commit.getResult());
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console.log(`*** Successfully submitted transaction to transfer ownership from ${oldOwner} to Davids`);
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console.log('*** Waiting for transaction commit');
|
||||
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const status = await commit.getStatus();
|
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if (!status.successful) {
|
||||
throw new Error(`Transaction ${status.transactionId} failed to commit with status code ${status.code}`);
|
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try {
|
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for await (const event of events) {
|
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const payload = utf8Decoder.decode(event.payload);
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console.log(`<-- Chaincode event replayed: ${event.eventName}, payload: ${payload}`);
|
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if(event.eventName === 'DeleteAsset'){
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break
|
||||
}
|
||||
}
|
||||
}finally {
|
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events.close()
|
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}
|
||||
|
||||
console.log('*** Transaction committed successfully');
|
||||
}
|
||||
|
||||
// Evaluate a transaction to query ledger state by given ID.
|
||||
async function readAssetByIDPrivate(contract: Contract): Promise<void> {
|
||||
console.log('\n--> Evaluate Transaction: ReadAsset, function returns asset attributes');
|
||||
|
||||
const resultBytes = await contract.evaluateTransaction('ReadAsset', assetId);
|
||||
const resultJson = utf8Decoder.decode(resultBytes);
|
||||
|
||||
const result = JSON.parse(resultJson);
|
||||
checkAsset(mspId, result,'blue','10','David','100')
|
||||
|
||||
console.log('*** Result:', result);
|
||||
}
|
||||
|
|
@ -0,0 +1,49 @@
|
|||
/*
|
||||
* Copyright IBM Corp. All Rights Reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
|
||||
import * as grpc from '@grpc/grpc-js';
|
||||
import { Identity, Signer, signers } from '@hyperledger/fabric-gateway';
|
||||
import * as crypto from 'crypto';
|
||||
import { promises as fs } from 'fs';
|
||||
import * as path from 'path';
|
||||
|
||||
const mspId = 'Org1MSP';
|
||||
|
||||
// Path to crypto materials.
|
||||
const cryptoPath = path.resolve(__dirname, '..', '..', '..', 'test-network', 'organizations', 'peerOrganizations', 'org1.example.com');
|
||||
|
||||
// Path to user private key directory.
|
||||
const keyDirectoryPath = path.resolve(cryptoPath, 'users', 'User1@org1.example.com', 'msp', 'keystore');
|
||||
|
||||
// Path to user certificate.
|
||||
const certPath = path.resolve(cryptoPath, 'users', 'User1@org1.example.com', 'msp', 'signcerts', 'cert.pem');
|
||||
|
||||
// Path to peer tls certificate.
|
||||
const tlsCertPath = path.resolve(cryptoPath, 'peers', 'peer0.org1.example.com', 'tls', 'ca.crt');
|
||||
|
||||
// Gateway peer endpoint.
|
||||
const peerEndpoint = 'localhost:7051';
|
||||
|
||||
export async function newGrpcConnection(): Promise<grpc.Client> {
|
||||
const tlsRootCert = await fs.readFile(tlsCertPath);
|
||||
const tlsCredentials = grpc.credentials.createSsl(tlsRootCert);
|
||||
return new grpc.Client(peerEndpoint, tlsCredentials, {
|
||||
'grpc.ssl_target_name_override': 'peer0.org1.example.com',
|
||||
});
|
||||
}
|
||||
|
||||
export async function newIdentity(): Promise<Identity> {
|
||||
const credentials = await fs.readFile(certPath);
|
||||
return { mspId, credentials };
|
||||
}
|
||||
|
||||
export async function newSigner(): Promise<Signer> {
|
||||
const files = await fs.readdir(keyDirectoryPath);
|
||||
const keyPath = path.resolve(keyDirectoryPath, files[0]);
|
||||
const privateKeyPem = await fs.readFile(keyPath);
|
||||
const privateKey = crypto.createPrivateKey(privateKeyPem);
|
||||
return signers.newPrivateKeySigner(privateKey);
|
||||
}
|
||||
|
|
@ -35,11 +35,15 @@ stopNetwork
|
|||
print "Remove wallet storage"
|
||||
rm -R ../asset-transfer-events/application-javascript/wallet
|
||||
|
||||
# Run Go gateway application
|
||||
|
||||
# Run typescript gateway application
|
||||
createNetwork
|
||||
print "Initializing Go gateway application"
|
||||
pushd ../asset-transfer-events/application-gateway-go
|
||||
print "Executing application"
|
||||
go run .
|
||||
print "Initializing typescript application"
|
||||
pushd ../asset-transfer-events/application-gateway-typescript
|
||||
npm install
|
||||
print "Build app"
|
||||
npm run build
|
||||
print "Executing dist/app.js"
|
||||
npm start
|
||||
popd
|
||||
stopNetwork
|
||||
|
|
|
|||
Loading…
Reference in a new issue