Support for dispatching on application level

Author: thekid

ChangeLog.md

@@ -3,6 +3,12 @@ AWS Lambda Webservices change log
 
 ## ?.?.? / ????-??-??
 
+## 2.3.0 / 2024-05-20
+
+* Added support for dispatching on application level, introduced in
+  https://github.com/xp-forge/web/releases/tag/v4.2.0
+  (@thekid)
+
 ## 2.2.0 / 2024-03-24
 
 * Made compatible with XP 12 - @thekid

src/main/php/com/amazon/aws/lambda/HttpApi.class.php

@@ -14,16 +14,16 @@ abstract class HttpApi extends HttpIntegration {
 
   /** @return callable|com.amazon.aws.lambda.Lambda|com.amazon.aws.lambda.Streaming */
   public function target() {
-    $routing= $this->routing();
+    $app= $this->application();
 
     // Return event handler
-    return function($event, $context) use($routing) {
+    return function($event, $context) use($app) {
       $in= new FromApiGateway($event);
       $req= new Request($in);
       $res= new Response(new ResponseDocument());
 
       try {
-        foreach ($routing->service($req->pass('context', $context)->pass('request', $in->context()), $res) ?? [] as $_) { }
+        foreach ($app->service($req->pass('context', $context)->pass('request', $in->context()), $res) ?? [] as $_) { }
         $this->tracing->log($req, $res);
         $res->end();
 

src/main/php/com/amazon/aws/lambda/HttpIntegration.class.php

@@ -27,21 +27,34 @@ public function __construct(Environment $environment) {
    */
   public abstract function routes($environment);
 
-  /** @return web.Routing */
-  protected final function routing() {
-    $routes= $this->routes(new WebEnv(
+  /** @return web.Application */
+  protected final function application() {
+    $env= new WebEnv(
       $this->environment->variable('PROFILE') ?? 'prod',
       $this->environment->root,
       $this->environment->path('static'),
       [$this->environment->properties],
       [],
       $this->tracing
-    ));
+    );
+    $routes= $this->routes($env);
 
     // Check for `xp-forge/web ^4.0` applications, which provide an initializer
-    if ($routes instanceof Application && method_exists($routes, 'initialize')) {
-      $routes->initialize();
+    if ($routes instanceof Application) {
+      method_exists($routes, 'initialize') && $routes->initialize();
+      return $routes;
     }
-    return Routing::cast($routes);
+
+    // Wrap routes inside an application to ensure application-level functionality
+    return new class($env, $routes) extends Application {
+      private $routes;
+
+      public function __construct($env, $routes) {
+        parent::__construct($env);
+        $this->routes= $routes;
+      }
+
+      public function routes() { return $this->routes; }
+    };
   }
 }

src/main/php/com/amazon/aws/lambda/HttpStreaming.class.php

@@ -14,16 +14,16 @@ abstract class HttpStreaming extends HttpIntegration {
 
   /** @return callable|com.amazon.aws.lambda.Lambda|com.amazon.aws.lambda.Streaming */
   public function target() {
-    $routing= $this->routing();
+    $app= $this->application();
 
     // Return event handler
-    return function($event, $stream, $context) use($routing) {
+    return function($event, $stream, $context) use($app) {
       $in= new FromApiGateway($event);
       $req= new Request($in);
       $res= new Response(new StreamingTo($stream));
 
       try {
-        foreach ($routing->service($req->pass('context', $context)->pass('request', $in->context()), $res) ?? [] as $_) { }
+        foreach ($app->service($req->pass('context', $context)->pass('request', $in->context()), $res) ?? [] as $_) { }
         $this->tracing->log($req, $res);
 
         $res->end();

src/test/php/com/amazon/aws/lambda/unittest/InvocationTest.class.php

@@ -138,6 +138,30 @@ public function sending_redirect() {
     );
   }
 
+  #[Test]
+  public function sending_dispatch() {
+    $fixture= [
+      '/target' => function($req, $res) {
+        $res->answer(200);
+        $res->send('Hello '.$req->param('name'), 'text/plain');
+      },
+      '/' => function($req, $res) {
+        return $req->dispatch('/target', ['name' => 'Test']);
+      },
+    ];
+
+    Assert::equals(
+      [
+        'statusCode'        => 200,
+        'statusDescription' => 'OK',
+        'isBase64Encoded'   => false,
+        'headers'           => ['Content-Type' => 'text/plain', 'Content-Length' => 10],
+        'body'              => 'Hello Test',
+      ],
+      $this->transform($this->invoke($fixture, 'GET'))
+    );
+  }
+
   #[Test]
   public function throwing_error() {
     $fixture= ['/' => function($req, $res) {