Added rust template for Cloudflare WASM

docs/providers/cloudflare/cli-reference/create.md

@@ -52,6 +52,7 @@ These are the current available templates for Cloudflare Workers:
 
 - cloudflare-workers
 - cloudflare-workers-enterprise
+- cloudflare-workers-rust
 
 ## Examples
 ### Creating a new service

docs/providers/cloudflare/guide/services.md

@@ -51,6 +51,7 @@ Here are the available runtimes for Cloudflare Workers:
 
 * cloudflare-workers
 * cloudflare-workers-enterprise
+* cloudflare-workers-rust
 
 Check out the [create command docs](../cli-reference/create) for all the details and options.
 

lib/plugins/create/create.js

@@ -40,6 +40,7 @@ const validTemplates = [
   'azure-nodejs',
   'cloudflare-workers',
   'cloudflare-workers-enterprise',
+  'cloudflare-workers-rust',
   'fn-nodejs',
   'fn-go',
   'google-nodejs',

lib/plugins/create/create.test.js

@@ -606,6 +606,48 @@ describe('Create', () => {
       });
     });
 
+    it('should generate scaffolding for "cloudflare-workers" template', () => {
+      process.chdir(tmpDir);
+      create.options.template = 'cloudflare-workers';
+
+      return create.create().then(() => {
+        const dirContent = fs.readdirSync(tmpDir);
+        expect(dirContent).to.include('package.json');
+        expect(dirContent).to.include('serverless.yml');
+        expect(dirContent).to.include('helloWorld.js');
+        expect(dirContent).to.include('.gitignore');
+      });
+    });
+
+    it('should generate scaffolding for "cloudflare-workers-enterprise" template', () => {
+      process.chdir(tmpDir);
+      create.options.template = 'cloudflare-workers-enterprise';
+
+      return create.create().then(() => {
+        const dirContent = fs.readdirSync(tmpDir);
+        expect(dirContent).to.include('package.json');
+        expect(dirContent).to.include('serverless.yml');
+        expect(dirContent).to.include('bar.js');
+        expect(dirContent).to.include('helloWorld.js');
+        expect(dirContent).to.include('.gitignore');
+      });
+    });
+
+    it('should generate scaffolding for "cloudflare-workers-rust" template', () => {
+      process.chdir(tmpDir);
+      create.options.template = 'cloudflare-workers-rust';
+
+      return create.create().then(() => {
+        const dirContent = fs.readdirSync(tmpDir);
+        expect(dirContent).to.include('package.json');
+        expect(dirContent).to.include('serverless.yml');
+        expect(dirContent).to.include('helloWorld.js');
+        expect(dirContent).to.include('.gitignore');
+        expect(dirContent).to.include('webpack.config.js');
+        expect(dirContent).to.include('rust-wasm');
+      });
+    });
+
     it('should generate scaffolding for "google-python" template', () => {
       process.chdir(tmpDir);
       create.options.template = 'google-python';

lib/plugins/create/templates/cloudflare-workers-rust/.gitignore

@@ -0,0 +1,3 @@
+# Serverless directories
+.serverless
+node_modules/

lib/plugins/create/templates/cloudflare-workers-rust/helloWorld.js

@@ -0,0 +1,12 @@
+addEventListener('fetch', event => {
+  event.respondWith(handleRequest(event.request))
+})
+
+async function handleRequest(request) {
+  try {
+    await wasm_bindgen(WASM);
+    return new Response(wasm_bindgen.hello());
+  } catch (e) {
+    return new Response(JSON.stringify(e.message));
+  }
+}

lib/plugins/create/templates/cloudflare-workers-rust/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "cloudflare-workers-rust",
+  "version": "1.0.0",
+  "description": "Cloudflare serverless deployment with Rust WASM",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "cloudflare",
+  "license": "MIT",
+  "devDependencies": {
+    "serverless-cloudflare-workers": "1.2.0",
+    "@wasm-tool/wasm-pack-plugin": "0.2.7"
+  }
+}

lib/plugins/create/templates/cloudflare-workers-rust/rust-wasm/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "rust-wasm"
+version = "0.1.0"
+authors = ["Developers"]
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+wasm-bindgen = "0.2"

lib/plugins/create/templates/cloudflare-workers-rust/rust-wasm/src/lib.rs

@@ -0,0 +1,6 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub fn hello() -> String {
+  String::from("Hello World")
+}

lib/plugins/create/templates/cloudflare-workers-rust/serverless.yml

@@ -0,0 +1,30 @@
+service:
+    name: hello-world
+
+provider:
+  name: cloudflare
+  config:
+    accountId: CLOUDFLARE_ACCOUNT_ID
+    zoneId: CLOUDFLARE_ZONE_ID
+
+plugins:
+  - serverless-cloudflare-workers
+
+custom:
+  domain: example.com
+
+functions:
+  hello:
+    name: hello
+    webpack: webpack.config.js
+    script: helloWorld
+    events:
+      - http:
+          url: ${self:custom.domain}/hello/*
+          method: GET
+
+    resources:
+      wasm:
+        - variable: WASM
+          file: rust-wasm/pkg/rust_wasm_bg.wasm
+

lib/plugins/create/templates/cloudflare-workers-rust/webpack.config.js

@@ -0,0 +1,29 @@
+const path = require("path");
+const WasmPackPlugin = require("@wasm-tool/wasm-pack-plugin");
+
+const wasmDir = 'rust-wasm';
+
+module.exports = {
+  entry: {
+    helloWorld: [path.join(__dirname, `./${wasmDir}/pkg/rust_wasm.js`), path.join(__dirname, './helloWorld.js')]
+  },
+  resolve: {
+    extensions: ['.js']
+  },
+  output: {
+    filename: '[name].js',
+    path: path.join(__dirname, 'dist')
+  },
+  plugins: [
+    new WasmPackPlugin({
+      crateDirectory: path.resolve(__dirname, wasmDir),
+      extraArgs: "--no-typescript --target no-modules"
+    })
+  ],
+
+  //devtool: 'inline-source-map',
+
+  target: 'web',
+
+  mode: process.env.NODE_ENV || 'production'
+};