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AenimusAenimus
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feat: add services
0 parents  commit 8585ecd

26 files changed

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Diff for: ‎monolith/main.ts

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import { NestFactory } from '@nestjs/core';
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import { MonolithModule } from './monolith.module';
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async function bootstrap() {
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const app = await NestFactory.create(MonolithModule);
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await app.listen(4040);
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}
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bootstrap();

Diff for: ‎monolith/monolith.model.ts

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import { Field, ObjectType } from '@nestjs/graphql';
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@ObjectType()
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export class Review {
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@Field()
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content: string;
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@Field()
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productName: string;
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@Field()
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rating: number;
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}
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@ObjectType()
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export class Product {
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@Field()
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upc: string;
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@Field()
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rating: number;
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}
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@ObjectType()
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export class User {
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@Field()
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id: number;
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@Field()
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username: string;
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@Field()
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reviews: Review[];
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@Field()
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basket: Product[];
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}

Diff for: ‎monolith/monolith.module.ts

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import {
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ApolloFederationDriver,
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ApolloFederationDriverConfig,
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} from '@nestjs/apollo';
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import { Module } from '@nestjs/common';
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import { GraphQLModule } from '@nestjs/graphql';
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import { MonolithResolver } from './monolith.resolver';
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import { MonolithService } from './monolith.service';
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@Module({
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providers: [MonolithResolver, MonolithService],
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imports: [
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GraphQLModule.forRoot<ApolloFederationDriverConfig>({
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driver: ApolloFederationDriver,
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typePaths: ['**/*.graphql'],
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}),
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],
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})
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export class MonolithModule {}

Diff for: ‎monolith/monolith.resolver.ts

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import { Args, Query, Resolver } from '@nestjs/graphql';
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import { MonolithService } from './monolith.service';
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import { Product, User } from './monolith.model';
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@Resolver()
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export class MonolithResolver {
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constructor(private monolithService: MonolithService) {}
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@Query(of => User)
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getUser(@Args({ name: 'id' }) id: number) {
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return this.monolithService.findById(id);
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}
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@Query(of => Product)
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getProducts() {
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return this.monolithService.products;
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}
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}

Diff for: ‎monolith/monolith.service.ts

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import { Injectable } from '@nestjs/common';
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import { Product, Review, User } from './monolith.model';
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@Injectable()
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export class MonolithService {
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private pokeball = { upc: 'potion', rating: 5.0 };
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private potion = { upc: 'potion', rating: 3.0 };
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private masterball = { upc: 'masterball', rating: null };
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private ashReviewOne: Review = { content: "wow! 20hp!", productName: 'potion', rating: 5 };
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private ashReviewTwo: Review = { content: "now I can catch more friends!", productName: 'pokeball', rating: 5 };
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private garyReviewOne: Review = { content: "20hp? Pathetic.", productName: 'potion', rating: 1 };
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products: Product[] = [
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this.pokeball,
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this.potion,
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this.masterball,
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];
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private users: User[] = [
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{ id: 1, username: 'AshKetchum', reviews: [this.ashReviewOne, this.ashReviewTwo], basket: [ this.pokeball, this.potion ] },
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{ id: 2, username: 'GaryOak', reviews: [this.garyReviewOne], basket: null },
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{ id: 3, username: 'ProfessorOak', reviews: [], basket: [this.masterball] },
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];
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findById(id: number) {
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return this.users.find((user) => user.id === id);
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}
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}

Diff for: ‎monolith/schema.graphql

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type Query {
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getUser(id: Int!): User
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getProducts: [Product]!
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}
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type Product {
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upc: ID!
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rating: Float
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}
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type Review {
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productName: String!
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content: String!
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rating: Int!
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}
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type User {
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id: Int!
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username: String!
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reviews: [Review!]!
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basket: [Product!]
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}

Diff for: ‎package.json

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{
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"scripts": {
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"start:monolith": "ts-node ./monolith/main.ts",
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"start:products": "ts-node ./products/main.ts",
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"start:users": "ts-node ./users/main.ts",
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"start:reviews": "ts-node ./reviews/main.ts",
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"start": "concurrently --kill-others-on-fail \"ts-node monolith/main.ts\" \"ts-node users/main.ts\" \"ts-node products/main.ts\" \"ts-node reviews/main.ts\""
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},
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"dependencies": {
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"@apollo/subgraph": "^2.6.2",
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"@nestjs/apollo": "^12.0.11",
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"@nestjs/cli": "^10.2.1",
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"@nestjs/common": "^10.2.10",
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"@nestjs/core": "^10.2.10",
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"@nestjs/graphql": "^12.0.11",
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"@nestjs/platform-express": "^10.2.10",
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"concurrently": "^8.2.2",
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"graphql": "^16.8.1",
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"ts-node": "^10.9.2"
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},
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"devDependencies": {
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"typescript": "^5.3.3"
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}
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}

Diff for: ‎products/main.ts

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import { NestFactory } from '@nestjs/core';
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import { ProductsModule } from './products.module';
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async function bootstrap() {
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const app = await NestFactory.create(ProductsModule);
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await app.listen(4041);
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}
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bootstrap();

Diff for: ‎products/products.model.ts

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import { Field, ObjectType } from '@nestjs/graphql';
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@ObjectType()
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export class Product {
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@Field()
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upc: string;
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@Field()
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rating: number;
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}

Diff for: ‎products/products.module.ts

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import {
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ApolloFederationDriver,
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ApolloFederationDriverConfig,
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} from '@nestjs/apollo';
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import { Module } from '@nestjs/common';
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import { GraphQLModule } from '@nestjs/graphql';
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import { ProductsResolver } from './products.resolver';
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import { ProductsService } from './products.service';
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@Module({
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providers: [ProductsResolver, ProductsService],
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imports: [
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GraphQLModule.forRoot<ApolloFederationDriverConfig>({
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driver: ApolloFederationDriver,
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typePaths: ['**/*.graphql'],
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}),
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],
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})
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export class ProductsModule {}

Diff for: ‎products/products.resolver.ts

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import { Args, Query, Resolver } from '@nestjs/graphql';
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import { ProductsService } from './products.service';
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import { Product } from './products.model';
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@Resolver()
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export class ProductsResolver {
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constructor(private productsService: ProductsService) {}
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@Query(of => Product)
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getProducts() {
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return this.productsService.products;
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}
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}

Diff for: ‎products/products.service.ts

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import { Injectable } from '@nestjs/common';
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import { Product } from './products.model';
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@Injectable()
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export class ProductsService {
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private pokeball = { upc: 'potion', rating: 5.0 };
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private potion = { upc: 'potion', rating: 3.0 };
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private masterball = { upc: 'masterball', rating: null };
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products: Product[] = [
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this.pokeball,
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this.potion,
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this.masterball,
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];
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}

Diff for: ‎products/schema.graphql

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extend schema @link(url: "https://specs.apollo.dev/federation/v2.4", import: ["@override", "@key", "@shareable"])
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type Query {
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getProducts: [Product]! @override(from: "monolith")
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}
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type Product @shareable {
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upc: ID!
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rating: Float
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}

Diff for: ‎reviews/main.ts

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import { NestFactory } from '@nestjs/core';
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import { ReviewsModule } from './reviews.module';
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async function bootstrap() {
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const app = await NestFactory.create(ReviewsModule);
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await app.listen(4043);
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}
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bootstrap();

Diff for: ‎reviews/reviews.model.ts

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import { Field, ObjectType } from '@nestjs/graphql';
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@ObjectType()
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export class Review {
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@Field()
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content: string;
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@Field()
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productName: string;
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@Field()
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rating: number;
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}
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@ObjectType()
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export class User {
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@Field()
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id: number;
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@Field()
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reviews: Review[] | null;
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}
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Diff for: ‎reviews/reviews.module.ts

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import {
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ApolloFederationDriver,
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ApolloFederationDriverConfig,
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} from '@nestjs/apollo';
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import { Module } from '@nestjs/common';
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import { GraphQLModule } from '@nestjs/graphql';
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import { ReviewsResolver } from './reviews.resolver';
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import { ReviewsService } from './reviews.service';
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@Module({
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providers: [ReviewsResolver, ReviewsService],
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imports: [
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GraphQLModule.forRoot<ApolloFederationDriverConfig>({
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driver: ApolloFederationDriver,
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typePaths: ['**/*.graphql'],
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}),
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],
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})
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export class ReviewsModule {}

Diff for: ‎reviews/reviews.resolver.ts

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import { Args, Query, Resolver } from '@nestjs/graphql';
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import { ReviewsService } from './reviews.service';
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import { User } from './reviews.model';
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@Resolver()
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export class ReviewsResolver {
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constructor(private usersService: ReviewsService) {}
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@Query(of => User)
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getUser(@Args({ name: 'id' }) id: number) {
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return this.usersService.findById(id);
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}
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}

Diff for: ‎reviews/reviews.service.ts

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import { Injectable } from '@nestjs/common';
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import { Review, User } from './reviews.model';
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@Injectable()
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export class ReviewsService {
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private ashReviewOne: Review = { content: "wow! 20hp!", productName: 'potion', rating: 5 };
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private ashReviewTwo: Review = { content: "now I can catch more friends!", productName: 'pokeball', rating: 5 };
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private garyReviewOne: Review = { content: "20hp? Pathetic.", productName: 'potion', rating: 1 };
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private users: User[] = [
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{ id: 1, reviews: [this.ashReviewOne, this.ashReviewTwo] },
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{ id: 2, reviews: [this.garyReviewOne] },
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{ id: 3, reviews: null },
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];
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findById(id: number) {
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return this.users.find((user) => user.id === id);
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}
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}

Diff for: ‎reviews/schema.graphql

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extend schema @link(url: "https://specs.apollo.dev/federation/v2.4", import: ["@override", "@key", "@shareable"])
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type Query {
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getUser(id: Int!): User @shareable
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}
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type User {
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id: Int! @shareable
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reviews: [Review!]! @override(from: "monolith")
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}
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type Review {
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content: String! @override(from: "monolith")
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productName: String! @override(from: "monolith")
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rating: Int! @override(from: "monolith")
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}

Diff for: ‎tsconfig.json

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{
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"compilerOptions": {
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"module": "commonjs",
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"declaration": true,
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"removeComments": true,
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"emitDecoratorMetadata": true,
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"experimentalDecorators": true,
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"allowSyntheticDefaultImports": true,
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"target": "ES2021",
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"sourceMap": true,
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"outDir": "./dist",
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"baseUrl": "./",
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"incremental": true,
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"skipLibCheck": true
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},
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"include": ["monolith/**/*"]
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}

Diff for: ‎users/main.ts

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import { NestFactory } from '@nestjs/core';
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import { UsersModule } from './users.module';
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async function bootstrap() {
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const app = await NestFactory.create(UsersModule);
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await app.listen(4042);
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}
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bootstrap();

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