fix(command): Graceful shutdown

Command processes `swoole:server:run` and `swoole:server:profile` killed with SIGINT (CONTROL-C),
previously were killed not gracefully (event console.terminate) was not emitted.

src/Bridge/Symfony/Bundle/Command/AbstractServerStartCommand.php

@@ -244,7 +244,10 @@ protected function prepareConfigurationRowsToPrint(HttpServerConfiguration $serv
      */
     protected function startServer(HttpServerConfiguration $serverConfiguration, HttpServer $server, SymfonyStyle $io): void
     {
+        $io->comment('Quit the server with CONTROL-C.');
+
         if ($server->start()) {
+            $io->newLine();
             $io->success('Swoole HTTP Server has been successfully shutdown.');
         } else {
             $io->error('Failure during starting Swoole HTTP Server.');

src/Bridge/Symfony/Bundle/Resources/config/services.yaml

@@ -20,6 +20,8 @@ services:
 
     'K911\Swoole\Server\RequestHandler\LimitedRequestHandler':
 
+    'K911\Swoole\Server\LifecycleHandler\SigIntHandler':
+
     'K911\Swoole\Server\Runtime\BootableInterface':
         class: 'K911\Swoole\Server\Runtime\BootManager'
         arguments: [!tagged 'swoole_bundle.bootable_service']
@@ -46,11 +48,36 @@ services:
         class: K911\Swoole\Server\Configurator\WithRequestHandler
         autoconfigure: false
 
+    'swoole_bundle.server.http_server.configurator.with_sigint_and_request_handler':
+        class: K911\Swoole\Server\Configurator\WithServerStartHandler
+        autoconfigure: false
+        arguments:
+            $decorated: '@swoole_bundle.server.http_server.configurator.with_request_handler'
+            $handler: '@K911\Swoole\Server\LifecycleHandler\SigIntHandler'
+
+    'swoole_bundle.server.http_server.configurator.with_sigint_and_limited_request_handler':
+        class: K911\Swoole\Server\Configurator\WithServerStartHandler
+        autoconfigure: false
+        arguments:
+            $decorated: '@swoole_bundle.server.http_server.configurator.with_limited_request_handler'
+            $handler: '@K911\Swoole\Server\LifecycleHandler\SigIntHandler'
+
     'swoole_bundle.server.http_server.factory':
         class: K911\Swoole\Server\HttpServerFactory
         arguments:
             $configurator: '@swoole_bundle.server.http_server.configurator.with_request_handler'
 
+    'swoole_bundle.server.http_server.sigint_factory':
+        class: K911\Swoole\Server\HttpServerFactory
+        arguments:
+            $configurator: '@swoole_bundle.server.http_server.configurator.with_sigint_and_request_handler'
+
+    'swoole_bundle.server.http_server.sigint_and_limited_factory':
+        class: K911\Swoole\Server\HttpServerFactory
+        arguments:
+            $configurator: '@swoole_bundle.server.http_server.configurator.with_sigint_and_limited_request_handler'
+
+
     'K911\Swoole\Bridge\Symfony\Bundle\Command\ServerStartCommand':
         tags: ['console.command']
         arguments:
@@ -65,14 +92,9 @@ services:
     'K911\Swoole\Bridge\Symfony\Bundle\Command\ServerRunCommand':
         tags: ['console.command']
         arguments:
-            $serverFactory: '@swoole_bundle.server.http_server.factory'
-
-    'swoole_bundle.server.http_server.limited_factory':
-        class: K911\Swoole\Server\HttpServerFactory
-        arguments:
-            $configurator: '@swoole_bundle.server.http_server.configurator.with_limited_request_handler'
+            $serverFactory: '@swoole_bundle.server.http_server.sigint_factory'
 
     'K911\Swoole\Bridge\Symfony\Bundle\Command\ServerProfileCommand':
         tags: ['console.command']
         arguments:
-            $serverFactory: '@swoole_bundle.server.http_server.limited_factory'
+            $serverFactory: '@swoole_bundle.server.http_server.sigint_and_limited_factory'

src/Server/Configurator/WithServerStartHandler.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace K911\Swoole\Server\Configurator;
+
+use K911\Swoole\Server\LifecycleHandler\ServerStartHandlerInterface;
+use Swoole\Http\Server;
+
+final class WithServerStartHandler implements ConfiguratorInterface
+{
+    private $handler;
+    private $decorated;
+
+    public function __construct(ConfiguratorInterface $decorated, ServerStartHandlerInterface $handler)
+    {
+        $this->handler = $handler;
+        $this->decorated = $decorated;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function configure(Server $server): void
+    {
+        $this->decorated->configure($server);
+
+        $server->on('start', [$this->handler, 'handle']);
+    }
+}

src/Server/LifecycleHandler/ServerStartHandlerInterface.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace K911\Swoole\Server\LifecycleHandler;
+
+use Swoole\Server;
+
+interface ServerStartHandlerInterface
+{
+    /**
+     * Handle "OnStart" event.
+     *
+     * @param Server $server
+     */
+    public function handle(Server $server): void;
+}

src/Server/LifecycleHandler/SigIntHandler.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace K911\Swoole\Server\LifecycleHandler;
+
+use Swoole\Process;
+use Swoole\Server;
+
+final class SigIntHandler implements ServerStartHandlerInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function handle(Server $server): void
+    {
+        // 2 => SIGINT
+        Process::signal(2, [$server, 'shutdown']);
+    }
+}