diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000..4ecfa83 --- /dev/null +++ b/.dockerignore @@ -0,0 +1,5 @@ +node_modules +.git +dist +.DS_Store +*.local diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..61b013b --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +node_modules +.DS_Store +dist +src/index.css +*.local diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..ad4f691 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,14 @@ +FROM oven/bun:1 + +WORKDIR /app + +COPY package.json bun.lock ./ +RUN bun install --frozen-lockfile + +COPY . . +RUN bun run build + +ENV PORT=5786 +EXPOSE 5786 + +CMD ["bun", "run", "serve"] diff --git a/README.md b/README.md index 5eb0a33..571f74f 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,40 @@ -# swarm-demo +# Swarm Demo +A minimal demo app built with **Bun**, **Hono**, **React**, and **Tailwind CSS**. + +Displays the container hostname and a live updating date/time — useful for verifying load balancing across a swarm of containers. + +## Stack + +- [Bun](https://bun.sh/) — runtime, package manager, bundler, and dev server +- [Hono](https://hono.dev/) — lightweight web server +- [React](https://react.dev/) — UI +- [Tailwind CSS](https://tailwindcss.com/) — styling + +## Scripts + +| Command | Description | +|---------|-------------| +| `bun install` | Install dependencies | +| `bun run dev` | Start Bun dev server with HMR + Tailwind watch | +| `bun run build` | Build CSS + bundle for production | +| `bun run preview` | Build and start production server | +| `bun run serve` | Start production server (requires `dist/`) | + +## Docker + +```bash +# Build and run locally +docker build -t swarm-demo . +docker run -p 5786:5786 swarm-demo + +# Or use Docker Compose with 3 replicas +docker compose up --build +``` + +## Environment Variables + +| Variable | Default | Description | +|----------|---------|-------------| +| `PORT` | `5786` | Server port | +| `HOSTNAME` | 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+ + + diff --git a/package.json b/package.json new file mode 100644 index 0000000..111ee81 --- /dev/null +++ b/package.json @@ -0,0 +1,28 @@ +{ + "name": "swarm-demo", + "private": true, + "version": "0.0.0", + "type": "module", + "scripts": { + "dev": "bun run dev:css & bun ./index.html", + "dev:css": "tailwindcss -i src/styles.css -o src/index.css --watch", + "build": "bun run build:css && bun run build:js", + "build:css": "tailwindcss -i src/styles.css -o src/index.css --minify", + "build:js": "bun build ./index.html --outdir=dist --production", + "preview": "bun run build && bun src/server.ts", + "serve": "bun src/server.ts" + }, + "dependencies": { + "hono": "^4.7.8", + "react": "^19.1.0", + "react-dom": "^19.1.0" + }, + "devDependencies": { + "@types/bun": "^1.3.14", + "@types/react": "^19.1.4", + "@types/react-dom": "^19.1.5", + "bun-types": "^1.3.14", + "tailwindcss": "^3.4.17", + "typescript": "~5.8.3" + } +} diff --git a/src/App.tsx b/src/App.tsx new file mode 100644 index 0000000..e0ea6c9 --- /dev/null +++ b/src/App.tsx @@ -0,0 +1,40 @@ +import { useEffect, useState } from 'react' + +function App() { + const [container, setContainer] = useState('unknown') + const [time, setTime] = useState(new Date()) + + useEffect(() => { + fetch('/api/container') + .then((res) => res.json()) + .then((data) => setContainer(data.container)) + .catch(() => setContainer('localhost')) + + const interval = setInterval(() => setTime(new Date()), 1000) + return () => clearInterval(interval) + }, []) + + return ( +
+
+

Swarm Demo

+
+ Container: {container} +
+
+ {time.toLocaleString(undefined, { + weekday: 'short', + year: 'numeric', + month: 'short', + day: 'numeric', + hour: '2-digit', + minute: '2-digit', + second: '2-digit', + })} +
+
+
+ ) +} + +export default App diff --git a/src/main.tsx b/src/main.tsx new file mode 100644 index 0000000..db032b7 --- /dev/null +++ b/src/main.tsx @@ -0,0 +1,10 @@ +import { StrictMode } from 'react' +import { createRoot } from 'react-dom/client' +import './index.css' +import App from './App' + +createRoot(document.getElementById('root')!).render( + + + , +) diff --git a/src/server.ts b/src/server.ts new file mode 100644 index 0000000..7970465 --- /dev/null +++ b/src/server.ts @@ -0,0 +1,20 @@ +import { Hono } from 'hono' +import { serveStatic } from 'hono/bun' + +const app = new Hono() + +app.get('/api/container', (c) => { + return c.json({ container: process.env.HOSTNAME || 'localhost' }) +}) + +app.use('/*', serveStatic({ root: './dist' })) +app.get('*', serveStatic({ path: './dist/index.html' })) + +const port = parseInt(process.env.PORT || '5786', 10) + +console.log(`Server running on port ${port}`) + +export default { + port, + fetch: app.fetch, +} diff --git a/src/styles.css b/src/styles.css new file mode 100644 index 0000000..b5c61c9 --- /dev/null +++ b/src/styles.css @@ -0,0 +1,3 @@ +@tailwind base; +@tailwind components; +@tailwind utilities; diff --git a/tailwind.config.js b/tailwind.config.js new file mode 100644 index 0000000..dca8ba0 --- /dev/null +++ b/tailwind.config.js @@ -0,0 +1,11 @@ +/** @type {import('tailwindcss').Config} */ +export default { + content: [ + "./index.html", + "./src/**/*.{js,ts,jsx,tsx}", + ], + theme: { + extend: {}, + }, + plugins: [], +} diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..60db34d --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,19 @@ +{ + "compilerOptions": { + "target": "ES2020", + "lib": ["ES2020", "DOM", "DOM.Iterable"], + "module": "ESNext", + "skipLibCheck": true, + "moduleResolution": "bundler", + "allowImportingTsExtensions": true, + "isolatedModules": true, + "noEmit": true, + "jsx": "react-jsx", + "strict": true, + "noUnusedLocals": true, + "noUnusedParameters": true, + "noFallthroughCasesInSwitch": true, + "types": ["bun-types"] + }, + "include": ["src"] +}