feat: adding artifacts for shopping cart

Signed-off-by: Raymond Feng <enjoyjava@gmail.com>

package.json

@@ -50,19 +50,20 @@
     "src"
   ],
   "dependencies": {
-    "@loopback/context": "^0.12.2",
     "@loopback/boot": "^0.12.2",
+    "@loopback/context": "^0.12.2",
     "@loopback/core": "^0.11.2",
     "@loopback/dist-util": "^0.3.5",
-    "@loopback/repository": "^0.14.2",
+    "@loopback/openapi-v3": "^0.12.2",
+    "@loopback/repository": "^0.15.0",
     "@loopback/rest": "^0.19.2",
-    "@loopback/openapi-v3": "^0.12.2"
+    "loopback-connector-kv-redis": "^3.0.0"
   },
   "devDependencies": {
     "@commitlint/cli": "^7.0.0",
     "@commitlint/config-conventional": "^7.0.1",
     "@commitlint/travis-cli": "^7.0.0",
-    "@loopback/build": "^0.6.13",
+    "@loopback/build": "^0.7.0",
     "@loopback/testlab": "^0.11.2",
     "@types/mocha": "^5.0.0",
     "@types/node": "^10.1.1",

src/datasources/index.ts

@@ -0,0 +1 @@
+export * from './redis.datasource';

src/datasources/redis.datasource.json

@@ -0,0 +1,8 @@
+{
+  "name": "redis",
+  "connector": "kv-redis",
+  "host": "127.0.0.1",
+  "port": 6379,
+  "password": "",
+  "db": "shoppingcart"
+}

src/datasources/redis.datasource.ts

@@ -0,0 +1,14 @@
+import {inject} from '@loopback/core';
+import {juggler, AnyObject} from '@loopback/repository';
+const config = require('./redis.datasource.json');
+
+export class RedisDataSource extends juggler.DataSource {
+  static dataSourceName = 'redis';
+
+  constructor(
+    @inject('datasources.config.redis', {optional: true})
+    dsConfig: AnyObject = config,
+  ) {
+    super(dsConfig);
+  }
+}

src/models/index.ts

@@ -0,0 +1 @@
+export * from './shopping-cart.model';

src/models/shopping-cart.model.ts

@@ -0,0 +1,33 @@
+import {Entity, model, property} from '@loopback/repository';
+
+@model()
+export class ShoppingCart extends Entity {
+  @property({
+    type: 'number',
+    id: true,
+    required: true,
+  })
+  id: number;
+
+  @property({
+    type: 'string',
+    required: true,
+  })
+  userId: string;
+
+  @property({
+    type: 'array',
+    itemType: 'object',
+  })
+  items?: ShoppingCartItem[];
+
+  constructor(data?: Partial<ShoppingCart>) {
+    super(data);
+  }
+}
+
+export class ShoppingCartItem {
+  productId: string;
+  quantity: number;
+  price: number;
+}

src/repositories/shopping-cart.repository.ts

@@ -0,0 +1,11 @@
+import {DefaultKeyValueRepository} from '@loopback/repository';
+import {ShoppingCart} from '../models/shopping-cart.model';
+import {RedisDataSource} from '../datasources/redis.datasource';
+
+export class ShoppingCartRepository extends DefaultKeyValueRepository<
+  ShoppingCart
+> {
+  constructor() {
+    super(ShoppingCart, new RedisDataSource());
+  }
+}