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[FAB-14532] Remove LL FabCar sample
Remove the Fabric v2.0 version of the low-level FabCar sample. We should not be advertising how to use the low-level APIs at this point. The low-level samples are still available for Fabric v1.4 to show the difference between the low-level and high-level APIs. Signed-off-by: Simon Stone <sstone1@uk.ibm.com> Change-Id: I87b7edf477064b79f449f618f48902b9495e7d4a
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Simon Stone
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2 changed files with 0 additions and 210 deletions
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/*
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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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'use strict';
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const shim = require('fabric-shim');
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const util = require('util');
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let Chaincode = class {
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// The Init method is called when the Smart Contract 'fabcar' is instantiated by the blockchain network
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// Best practice is to have any Ledger initialization in separate function -- see initLedger()
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async Init(stub) {
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console.info('=========== Instantiated fabcar chaincode ===========');
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return shim.success();
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}
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// The Invoke method is called as a result of an application request to run the Smart Contract
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// 'fabcar'. The calling application program has also specified the particular smart contract
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// function to be called, with arguments
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async Invoke(stub) {
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let ret = stub.getFunctionAndParameters();
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console.info(ret);
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let method = this[ret.fcn];
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if (!method) {
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console.error('no function of name:' + ret.fcn + ' found');
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throw new Error('Received unknown function ' + ret.fcn + ' invocation');
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}
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try {
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let payload = await method(stub, ret.params);
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return shim.success(payload);
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} catch (err) {
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console.log(err);
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return shim.error(err);
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}
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}
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async queryCar(stub, args) {
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if (args.length != 1) {
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throw new Error('Incorrect number of arguments. Expecting CarNumber ex: CAR01');
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}
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let carNumber = args[0];
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let carAsBytes = await stub.getState(carNumber); //get the car from chaincode state
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if (!carAsBytes || carAsBytes.toString().length <= 0) {
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throw new Error(carNumber + ' does not exist: ');
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}
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console.log(carAsBytes.toString());
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return carAsBytes;
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}
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async initLedger(stub, args) {
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console.info('============= START : Initialize Ledger ===========');
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let cars = [];
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cars.push({
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make: 'Toyota',
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model: 'Prius',
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color: 'blue',
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owner: 'Tomoko'
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});
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cars.push({
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make: 'Ford',
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model: 'Mustang',
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color: 'red',
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owner: 'Brad'
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});
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cars.push({
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make: 'Hyundai',
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model: 'Tucson',
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color: 'green',
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owner: 'Jin Soo'
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});
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cars.push({
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make: 'Volkswagen',
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model: 'Passat',
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color: 'yellow',
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owner: 'Max'
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});
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cars.push({
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make: 'Tesla',
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model: 'S',
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color: 'black',
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owner: 'Adriana'
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});
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cars.push({
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make: 'Peugeot',
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model: '205',
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color: 'purple',
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owner: 'Michel'
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});
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cars.push({
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make: 'Chery',
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model: 'S22L',
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color: 'white',
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owner: 'Aarav'
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});
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cars.push({
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make: 'Fiat',
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model: 'Punto',
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color: 'violet',
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owner: 'Pari'
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});
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cars.push({
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make: 'Tata',
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model: 'Nano',
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color: 'indigo',
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owner: 'Valeria'
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});
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cars.push({
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make: 'Holden',
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model: 'Barina',
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color: 'brown',
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owner: 'Shotaro'
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});
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for (let i = 0; i < cars.length; i++) {
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cars[i].docType = 'car';
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await stub.putState('CAR' + i, Buffer.from(JSON.stringify(cars[i])));
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console.info('Added <--> ', cars[i]);
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}
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console.info('============= END : Initialize Ledger ===========');
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}
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async createCar(stub, args) {
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console.info('============= START : Create Car ===========');
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if (args.length != 5) {
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throw new Error('Incorrect number of arguments. Expecting 5');
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}
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var car = {
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docType: 'car',
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make: args[1],
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model: args[2],
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color: args[3],
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owner: args[4]
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};
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await stub.putState(args[0], Buffer.from(JSON.stringify(car)));
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console.info('============= END : Create Car ===========');
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}
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async queryAllCars(stub, args) {
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let startKey = 'CAR0';
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let endKey = 'CAR999';
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let iterator = await stub.getStateByRange(startKey, endKey);
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let allResults = [];
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while (true) {
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let res = await iterator.next();
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if (res.value && res.value.value.toString()) {
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let jsonRes = {};
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console.log(res.value.value.toString('utf8'));
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jsonRes.Key = res.value.key;
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try {
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jsonRes.Record = JSON.parse(res.value.value.toString('utf8'));
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} catch (err) {
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console.log(err);
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jsonRes.Record = res.value.value.toString('utf8');
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}
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allResults.push(jsonRes);
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}
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if (res.done) {
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console.log('end of data');
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await iterator.close();
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console.info(allResults);
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return Buffer.from(JSON.stringify(allResults));
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}
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}
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}
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async changeCarOwner(stub, args) {
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console.info('============= START : changeCarOwner ===========');
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if (args.length != 2) {
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throw new Error('Incorrect number of arguments. Expecting 2');
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}
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let carAsBytes = await stub.getState(args[0]);
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let car = JSON.parse(carAsBytes);
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car.owner = args[1];
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await stub.putState(args[0], Buffer.from(JSON.stringify(car)));
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console.info('============= END : changeCarOwner ===========');
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}
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};
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shim.start(new Chaincode());
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{
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"name": "fabcar",
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"version": "1.0.0",
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"description": "fabcar chaincode implemented in node.js",
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"engines": {
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"node": ">=8.4.0",
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"npm": ">=5.3.0"
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},
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"scripts": {
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"start": "node fabcar.js"
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},
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"engine-strict": true,
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"license": "Apache-2.0",
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"dependencies": {
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"fabric-shim": "unstable"
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}
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}
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