Cloudflare Queue consumer generator

uzumibi-cli/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "uzumibi-cli"
-version = "0.6.0-rc1"
+version = "0.6.0-rc2"
 edition = "2024"
 authors = ["Uchio Kondo <udzura@udzura.jp>"]
 description = "Uzumibi CLI tool to generate serverless mruby/edge apps"

uzumibi-cli/src/main.rs

@@ -91,7 +91,12 @@ fn create_project(
     println!("Creating project '{}'...", project_name);
 
     // Collect feature overlay paths to know which files to skip from base
-    let feature_files = collect_feature_overlay_files(template, features);
+    let mut feature_files = collect_feature_overlay_files(template, features);
+
+    // When queue feature is active, skip app.rb (consumer.rb replaces it)
+    if features.iter().any(|f| f == "queue") {
+        feature_files.insert("lib/app.rb".to_string());
+    }
 
     // Copy base template files (skip files that will be overridden by feature overlays)
     copy_dir_recursive(
@@ -338,14 +343,17 @@ fn show_diff(existing_file: &Path, new_content: &[u8]) -> Result<(), Box<dyn std
 
 fn substitute_project_name(content: &str, project_name: &str) -> String {
     let project_name_underscore = project_name.replace('-', "_");
+    let project_name_kebab = project_name.replace('_', "-");
 
     content
         .replace("$$PROJECT_NAME$$", project_name)
         .replace("$$PROJECT_NAME_UNDERSCORE$$", &project_name_underscore)
+        .replace("$$PROJECT_NAME_KEBAB$$", &project_name_kebab)
 }
 
 fn print_project_next_steps(template: &str, project_name: &str, features: &[String]) {
     let has_enable_external = features.iter().any(|f| f == "enable-external");
+    let has_queue = features.iter().any(|f| f == "queue");
 
     println!("\nNext steps:");
     match template {
@@ -358,7 +366,7 @@ fn print_project_next_steps(template: &str, project_name: &str, features: &[Stri
             println!("     \x1b[36mrustup target add wasm32-unknown-unknown\x1b[0m");
             println!("     • Node.js tools:");
             println!("     \x1b[36mnpm install -g pnpm wrangler\x1b[0m");
-            if has_enable_external {
+            if has_enable_external || has_queue {
                 println!("     • wasm-opt (Binaryen, required for asyncify):");
                 println!("     \x1b[36mbrew install binaryen\x1b[0m");
                 println!("     Or visit: https://github.com/WebAssembly/binaryen/releases");
@@ -370,7 +378,28 @@ fn print_project_next_steps(template: &str, project_name: &str, features: &[Stri
             println!("     \x1b[36mpnpm run dev\x1b[0m");
             println!("  3. Deploy to Cloudflare:");
             println!("     \x1b[36mpnpm run deploy\x1b[0m");
-            if has_enable_external {
+            if has_queue {
+                println!();
+                println!(
+                    "  \x1b[33mNote:\x1b[0m This project uses queue feature (Cloudflare Queues consumer)."
+                );
+                println!(
+                    "  Edit \x1b[36mlib/consumer.rb\x1b[0m to implement your queue consumer logic."
+                );
+                println!("  The following Uzumibi APIs are available in Ruby:");
+                println!(
+                    "    • \x1b[36mUzumibi::Message#ack!\x1b[0m / \x1b[36m#retry(delay_seconds: N)\x1b[0m → Message control"
+                );
+                println!(
+                    "    • \x1b[36mUzumibi::Fetch.fetch(url, method, body)\x1b[0m → Uzumibi::Response"
+                );
+                println!(
+                    "    • \x1b[36mUzumibi::KV.get(key)\x1b[0m / \x1b[36mUzumibi::KV.set(key, value)\x1b[0m → Durable Object storage"
+                );
+                println!(
+                    "    • \x1b[36mUzumibi::Queue.send(queue_name, message)\x1b[0m → Cloudflare Queue"
+                );
+            } else if has_enable_external {
                 println!();
                 println!("  \x1b[33mNote:\x1b[0m This project uses enable-external feature.");
                 println!("  The following Uzumibi APIs are available in Ruby:");

uzumibi-cli/templates/cloudflare/__features__/enable-external/wrangler.jsonc

@@ -10,6 +10,21 @@
     "observability": {
         "enabled": true
     },
+    /**
+	 * Queues
+	 * Used for Uzumibi::Queue.send
+     * Uncomment the following block to enable queue producer capabilities.
+     * And create queue via command wrangler queue create $$PROJECT_NAME_KEBAB$$-queue
+	 * https://developers.cloudflare.com/queues/
+	 */
+    // "queues": {
+    //     "producers": [
+    //         {
+    //             "binding": "UZUMIBI_QUEUE",
+    //             "queue": "$$PROJECT_NAME_KEBAB$$-queue"
+    //         }
+    //     ]
+    // },
     /**
 	 * Durable Objects
 	 * Used for Uzumibi::KV.get/set
@@ -31,17 +46,4 @@
             ]
         }
     ]
-    /**
-	 * Queues
-	 * Used for Uzumibi::Queue.send
-	 * https://developers.cloudflare.com/queues/
-	 */
-    // "queues": {
-    // 	"producers": [
-    // 		{
-    // 			"binding": "MY_QUEUE",
-    // 			"queue": "my-queue-name"
-    // 		}
-    // 	]
-    // }
 }

uzumibi-cli/templates/cloudflare/__features__/queue/lib/consumer.rb

@@ -0,0 +1,15 @@
+class Consumer < Uzumibi::Consumer
+  # @rbs message: Uzumibi::Message
+  def on_receive(message)
+    debug_console("[Consumer] Received message: id=#{message.id}, body=#{message.body}, attempts=#{message.attempts}")
+
+    if message.attempts > 3
+      debug_console("[Consumer] Acknowledging message #{message.id} after 3 attempts!!")
+      message.ack!
+    else
+      message.retry(delay_seconds: 3)
+    end
+  end
+end
+
+$CONSUMER = Consumer.new

uzumibi-cli/templates/cloudflare/__features__/queue/package.json

@@ -0,0 +1,18 @@
+{
+    "name": "$$PROJECT_NAME$$",
+    "version": "0.0.0",
+    "private": true,
+    "scripts": {
+        "deploy": "npm run build:wasm:asyncify && wrangler deploy",
+        "dev": "npm run build:wasm:asyncify && wrangler dev",
+        "build:wasm:asyncify": "cargo build --package $$PROJECT_NAME$$ --target wasm32-unknown-unknown --release --features queue && wasm-opt --enable-bulk-memory --enable-nontrapping-float-to-int --asyncify -O2 target/wasm32-unknown-unknown/release/$$PROJECT_NAME_UNDERSCORE$$.wasm -o ./src/$$PROJECT_NAME_UNDERSCORE$$_queue.wasm",
+        "start": "wrangler dev",
+        "test": "vitest"
+    },
+    "devDependencies": {
+        "@cloudflare/vitest-pool-workers": "^0.8.19",
+        "asyncify-wasm": "^1.2.0",
+        "vitest": "~3.2.0",
+        "wrangler": "^4.54.0"
+    }
+}