[FAB-12851] Add fabcar contract w/ new prog model (JS)

Add new FabCar contract sample using the new programming model, written
in JavaScript. Add the new contract sample alongside the existing one
written in the old programming model, which will be removed in a subsequent
change request.

Change-Id: Iea46b0a616dbd072b5bd7227ada827a26560f153
Signed-off-by: Simon Stone <sstone1@uk.ibm.com>

chaincode/fabcar/javascript/.editorconfig

@@ -0,0 +1,16 @@
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

chaincode/fabcar/javascript/.eslintignore

@@ -0,0 +1,5 @@
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+coverage

chaincode/fabcar/javascript/.eslintrc.js

@@ -0,0 +1,38 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+module.exports = {
+    env: {
+        node: true,
+        mocha: true
+    },
+    parserOptions: {
+        ecmaVersion: 8,
+        sourceType: 'script'
+    },
+    extends: "eslint:recommended",
+    rules: {
+        indent: ['error', 4],
+        'linebreak-style': ['error', 'unix'],
+        quotes: ['error', 'single'],
+        semi: ['error', 'always'],
+        'no-unused-vars': ['error', { args: 'none' }],
+        'no-console': 'off',
+        curly: 'error',
+        eqeqeq: 'error',
+        'no-throw-literal': 'error',
+        strict: 'error',
+        'no-var': 'error',
+        'dot-notation': 'error',
+        'no-tabs': 'error',
+        'no-trailing-spaces': 'error',
+        'no-use-before-define': 'error',
+        'no-useless-call': 'error',
+        'no-with': 'error',
+        'operator-linebreak': 'error',
+        yoda: 'error',
+        'quote-props': ['error', 'as-needed'],
+        'no-constant-condition': ["error", { "checkLoops": false }]
+    }
+};

chaincode/fabcar/javascript/.gitignore

@@ -0,0 +1,77 @@
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless

chaincode/fabcar/javascript/index.js

@@ -0,0 +1,10 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+'use strict';
+
+const FabCar = require('./lib/fabcar');
+
+module.exports.FabCar = FabCar;
+module.exports.contracts = [ FabCar ];

chaincode/fabcar/javascript/lib/fabcar.js

@@ -0,0 +1,156 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+'use strict';
+
+const { Contract } = require('fabric-contract-api');
+
+class FabCar extends Contract {
+
+    async initLedger(ctx) {
+        console.info('============= START : Initialize Ledger ===========');
+        const cars = [
+            {
+                color: 'blue',
+                make: 'Toyota',
+                model: 'Prius',
+                owner: 'Tomoko',
+            },
+            {
+                color: 'red',
+                make: 'Ford',
+                model: 'Mustang',
+                owner: 'Brad',
+            },
+            {
+                color: 'green',
+                make: 'Hyundai',
+                model: 'Tucson',
+                owner: 'Jin Soo',
+            },
+            {
+                color: 'yellow',
+                make: 'Volkswagen',
+                model: 'Passat',
+                owner: 'Max',
+            },
+            {
+                color: 'black',
+                make: 'Tesla',
+                model: 'S',
+                owner: 'Adriana',
+            },
+            {
+                color: 'purple',
+                make: 'Peugeot',
+                model: '205',
+                owner: 'Michel',
+            },
+            {
+                color: 'white',
+                make: 'Chery',
+                model: 'S22L',
+                owner: 'Aarav',
+            },
+            {
+                color: 'violet',
+                make: 'Fiat',
+                model: 'Punto',
+                owner: 'Pari',
+            },
+            {
+                color: 'indigo',
+                make: 'Tata',
+                model: 'Nano',
+                owner: 'Valeria',
+            },
+            {
+                color: 'brown',
+                make: 'Holden',
+                model: 'Barina',
+                owner: 'Shotaro',
+            },
+        ];
+
+        for (let i = 0; i < cars.length; i++) {
+            cars[i].docType = 'car';
+            await ctx.stub.putState('CAR' + i, Buffer.from(JSON.stringify(cars[i])));
+            console.info('Added <--> ', cars[i]);
+        }
+        console.info('============= END : Initialize Ledger ===========');
+    }
+
+    async queryCar(ctx, carNumber) {
+        const carAsBytes = await ctx.stub.getState(carNumber); // get the car from chaincode state
+        if (!carAsBytes || carAsBytes.length === 0) {
+            throw new Error(`${carNumber} does not exist`);
+        }
+        console.log(carAsBytes.toString());
+        return carAsBytes.toString();
+    }
+
+    async createCar(ctx, carNumber, make, model, color, owner) {
+        console.info('============= START : Create Car ===========');
+
+        const car = {
+            color,
+            docType: 'car',
+            make,
+            model,
+            owner,
+        };
+
+        await ctx.stub.putState(carNumber, Buffer.from(JSON.stringify(car)));
+        console.info('============= END : Create Car ===========');
+    }
+
+    async queryAllCars(ctx) {
+        const startKey = 'CAR0';
+        const endKey = 'CAR999';
+
+        const iterator = await ctx.stub.getStateByRange(startKey, endKey);
+
+        const allResults = [];
+        while (true) {
+            const res = await iterator.next();
+
+            if (res.value && res.value.value.toString()) {
+                console.log(res.value.value.toString('utf8'));
+
+                const Key = res.value.key;
+                let Record;
+                try {
+                    Record = JSON.parse(res.value.value.toString('utf8'));
+                } catch (err) {
+                    console.log(err);
+                    Record = res.value.value.toString('utf8');
+                }
+                allResults.push({ Key, Record });
+            }
+            if (res.done) {
+                console.log('end of data');
+                await iterator.close();
+                console.info(allResults);
+                return JSON.stringify(allResults);
+            }
+        }
+    }
+
+    async changeCarOwner(ctx, carNumber, newOwner) {
+        console.info('============= START : changeCarOwner ===========');
+
+        const carAsBytes = await ctx.stub.getState(carNumber); // get the car from chaincode state
+        if (!carAsBytes || carAsBytes.length === 0) {
+            throw new Error(`${carNumber} does not exist`);
+        }
+        const car = JSON.parse(carAsBytes.toString());
+        car.owner = newOwner;
+
+        await ctx.stub.putState(carNumber, Buffer.from(JSON.stringify(car)));
+        console.info('============= END : changeCarOwner ===========');
+    }
+
+}
+
+module.exports = FabCar;

chaincode/fabcar/javascript/package.json

@@ -0,0 +1,47 @@
+{
+    "name": "fabcar",
+    "version": "1.0.0",
+    "description": "FabCar contract implemented in JavaScript",
+    "main": "index.js",
+    "engines": {
+        "node": ">=8",
+        "npm": ">=5"
+    },
+    "scripts": {
+        "lint": "eslint .",
+        "pretest": "npm run lint",
+        "test": "nyc mocha --recursive",
+        "start": "fabric-chaincode-node start"
+    },
+    "engineStrict": true,
+    "author": "Hyperledger",
+    "license": "Apache-2.0",
+    "dependencies": {
+        "fabric-contract-api": "1.4.0-beta",
+        "fabric-shim": "1.4.0-beta"
+    },
+    "devDependencies": {
+        "chai": "^4.1.2",
+        "eslint": "^4.19.1",
+        "mocha": "^5.2.0",
+        "nyc": "^12.0.2",
+        "sinon": "^6.0.0",
+        "sinon-chai": "^3.2.0"
+    },
+    "nyc": {
+        "exclude": [
+            "coverage/**",
+            "test/**"
+        ],
+        "reporter": [
+            "text-summary",
+            "html"
+        ],
+        "all": true,
+        "check-coverage": true,
+        "statements": 100,
+        "branches": 100,
+        "functions": 100,
+        "lines": 100
+    }
+}