https://github.com/jdgabriel/ddd-domain-events

DDD - Domain Events learning
https://github.com/jdgabriel/ddd-domain-events

ddd ddd-patterns domainevents nodejs typescript

Last synced: 10 days ago
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DDD - Domain Events learning

• Host: GitHub
• URL: https://github.com/jdgabriel/ddd-domain-events
• Owner: jdgabriel
• Created: 2023-11-07T17:54:05.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-11-07T19:55:49.000Z (about 1 year ago)
• Last Synced: 2024-04-28T06:03:53.942Z (7 months ago)
• Topics: ddd, ddd-patterns, domainevents, nodejs, typescript
• Language: TypeScript
• Homepage:
• Size: 8.79 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
### DDD - Domain Events

#### Fluxograma

```mermaid

flowchart TD

    A[Order] --> B(new Order)

    B --> |event| C(OrderCreatedEvent)

    B --> |event| D(OrderPaidEvent)

    B --> |persist|G

    C --> E

    D --> E

    F[Database]

    E(DomainEvents)

    G(Repository)

    E --> |persist events|G

    G --> |Dispatch events| E

    G --> F

```

1. Criar uma `Order`;

2. Criar um evento respectivo a sua ação;

3. Salvar em banco de dados (Repositórios);

4. Disparar `DomainEvents` com o `id` da entidade;

#### Fluxograma em código

```ts

// src/infra/index.ts

// Subscriber

DomainEvents.registerSubscriber(OrderCreatedEvent.name, (order) => {

  console.log("order event", order);

});

// Subscriber

DomainEvents.registerSubscriber(OrderPaidEvent.name, (order) => {

  console.log("paid event", order);

});

// Publisher

const order = Order.create({

  customerId: "customer_id",

  productId: "product_id",

  amountInCents: 1000,

  status: "pending",

  createdAt: new Date(),

});

order.pay();

// Dentro da camada de persistência (repositório)

// Finalização do processo de venda

DomainEvents.dispatchEventsForEntity(order.id);

```