update serverlessdb examples

Signed-off-by: karthik2804 <[email protected]>

Author: karthik2804

examples/serverless_db/neondb/.gitignore

@@ -2,4 +2,4 @@ node_modules
 dist
 target
 .spin/
-dist.js
+build/

examples/serverless_db/neondb/.npmrc

@@ -0,0 +1 @@
+KNITWIT_SOURCE=./config/knitwit.json

examples/serverless_db/neondb/README.md

@@ -2,13 +2,6 @@
 
 This example demonstrates how to connect to Neon Database using the Neon Serverless SDK, execute a SQL query, and handle responses using the Spin SDK.
 
-## Install Dependencies
-Install the necessary npm packages:
-
-```bash
-npm install
-```
-
 ## Setup the Example
 
 1. **Setup Neon Database**

examples/serverless_db/neondb/knitwit.json renamed to examples/serverless_db/neondb/config/knitwit.json

@@ -4,7 +4,7 @@
     "description": "",
     "main": "index.js",
     "scripts": {
-        "build": "npx webpack --mode=production && npx mkdirp target && npx j2w -i dist.js -n spin-http -o target/neondb.wasm",
+        "build": "knitwit --out-dir build/wit/knitwit --out-world combined && npx webpack --mode=production && npx mkdirp dist && npx j2w -i build/bundle.js -d build/wit/knitwit -n combined -o dist/neondb.wasm",
         "test": "echo \"Error: no test specified\" && exit 1"
     },
     "keywords": [],
@@ -15,10 +15,12 @@
         "ts-loader": "^9.4.1",
         "typescript": "^4.8.4",
         "webpack": "^5.74.0",
-        "webpack-cli": "^4.10.0"
+        "webpack-cli": "^4.10.0",
+        "@fermyon/knitwit": "0.3.0"
     },
     "dependencies": {
-        "@fermyon/spin-sdk": "^2.0.0",
+        "@fermyon/spin-sdk": "^3.0.0-rc1",
+        "itty-router": "^5.0.18",
         "@neondatabase/serverless": "^0.9.3"
     }
 }

examples/serverless_db/neondb/package-lock.json

@@ -11,9 +11,9 @@ route = "/..."
 component = "neondb"
 
 [component.neondb]
-source = "target/neondb.wasm"
+source = "dist/neondb.wasm"
 exclude_files = ["**/node_modules"]
-allowed_outbound_hosts = ["https://*:*"]
+allowed_outbound_hosts = ["https://*.aws.neon.tech"]
 [component.neondb.build]
-command = "npm run build"
-watch = ["src/**/*.ts", "package.json"]
+command = ["npm install", "npm run build"]
+watch = ["src/**/*.ts"]

examples/serverless_db/neondb/package.json

@@ -1,13 +1,24 @@
-import { ResponseBuilder } from '@fermyon/spin-sdk';
+// https://itty.dev/itty-router/routers/autorouter
+import { AutoRouter } from 'itty-router';
 import { neon } from '@neondatabase/serverless';
 
-export async function handler(_req: Request, res: ResponseBuilder) {
-  try {
-    const sql = neon('<neon-database-endpoint>');
-    const posts = await sql('SELECT * FROM posts');
-    res.send(JSON.stringify(posts, null, 2));
-  } catch (e: any) {
-    res.status(500);
-    res.send(`error: ${e}`);
-  }
-}
+let router = AutoRouter();
+
+// Route ordering matters, the first route that matches will be used
+// Any route that does not return will be treated as a middleware
+// Any unmatched route will return a 404
+router
+    .get("/", async () => {
+        try {
+            const sql = neon('<neon-database-endpoint>');
+            const posts = await sql('SELECT * FROM posts');
+            return new Response(JSON.stringify(posts, null, 2), { headers: { 'Content-Type': 'application/json' } });
+        } catch (e: any) {
+            return new Response(`error: ${e}`, { status: 500 });
+        }
+    })
+
+//@ts-ignore
+addEventListener('fetch', async (event: FetchEvent) => {
+    event.respondWith(router.fetch(event.request));
+});

examples/serverless_db/neondb/spin.toml

@@ -1,33 +1,35 @@
 const path = require('path');
-const SpinSdkPlugin = require('@fermyon/spin-sdk/plugins/webpack');
+const SpinSdkPlugin = require("@fermyon/spin-sdk/plugins/webpack")
 
 module.exports = {
-  entry: './src/spin.ts',
-  experiments: {
-    outputModule: true,
-  },
-  module: {
-    rules: [
-      {
-        test: /\.tsx?$/,
-        use: 'ts-loader',
-        exclude: /node_modules/,
-      },
+    entry: './src/index.ts',
+    experiments: {
+        outputModule: true,
+    },
+    module: {
+        rules: [
+            {
+                test: /\.tsx?$/,
+                use: 'ts-loader',
+                exclude: /node_modules/,
+            },
+        ],
+    },
+    resolve: {
+        extensions: ['.tsx', '.ts', '.js'],
+    },
+    output: {
+        path: path.resolve(__dirname, './build'),
+        filename: 'bundle.js',
+        module: true,
+        library: {
+            type: "module",
+        }
+    },
+    plugins: [
+        new SpinSdkPlugin()
     ],
-  },
-  resolve: {
-    extensions: ['.tsx', '.ts', '.js'],
-  },
-  output: {
-    path: path.resolve(__dirname, './'),
-    filename: 'dist.js',
-    module: true,
-    library: {
-      type: 'module',
+    optimization: {
+        minimize: false
     },
-  },
-  plugins: [new SpinSdkPlugin()],
-  optimization: {
-    minimize: false,
-  },
-};
+};