https://github.com/soc221b/dependency-inversion-principle-example

https://github.com/soc221b/dependency-inversion-principle-example

chat-application dependency-inversion graphql grpc polling websocket

Last synced: 10 months ago
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• Host: GitHub
• URL: https://github.com/soc221b/dependency-inversion-principle-example
• Owner: soc221b
• License: mit
• Created: 2022-05-14T02:02:04.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2023-11-03T03:41:08.000Z (over 2 years ago)
• Last Synced: 2025-02-28T05:37:04.352Z (about 1 year ago)
• Topics: chat-application, dependency-inversion, graphql, grpc, polling, websocket
• Language: JavaScript
• Homepage:
• Size: 106 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# dependency-inversion-principle-example

This example shows how to use the dependency-inversion principle to implement a simple chat application.

![Dependency UML](https://www.plantuml.com/plantuml/proxy?src=https://raw.githubusercontent.com/iendeavor/dependency-inversion-principle-example/main/dependency.puml)

Interface:

- [`ChatAPI`](./client/src/interface.ts)

Implementation:

- [`gRPCChatAPI`](./client/src/implementations/grpc/index.ts)

  > before using gRPC, make sure to

  >

  > 1. install `envoy`

  > 2. execute `pnpm run proxy` to enable envoy proxy

- [`LongPollingChatAPI`](./client/src/implementations/long-polling/index.ts)

- [`ServerSentEventsChatAPI`](./client/src/implementations/server-sent-events/index.ts)

- [`WebSocketChatAPI`](./client/src/implementations/web-socket/index.ts)

> To switch between the different implementations, you can [comment out](./client/src/index.ts#L3) the `LongPollingChatAPI` and uncomment other implementations.

## Usage

```bash

pnpm install

pnpm run dev

```

Open http://localhost:8080/ in your browser.