Add Console ExceptionListener

Handle non string-castable inputs

Cleanup input for display

Naming changes

InputInterface doesnt have a toString()

Logger must be private

Remove useless doc blocks

Tweak tests

CHANGELOG.md

@@ -4,6 +4,7 @@ CHANGELOG
 3.3.0
 -----
 
+* added `ExceptionListener`
 * added `AddConsoleCommandPass` (originally in FrameworkBundle)
 
 3.2.0

EventListener/ExceptionListener.php

@@ -12,79 +12,68 @@
 namespace Symfony\Component\Console\EventListener;
 
 use Psr\Log\LoggerInterface;
+use Symfony\Component\Console\Event\ConsoleEvent;
 use Symfony\Component\Console\ConsoleEvents;
 use Symfony\Component\Console\Event\ConsoleExceptionEvent;
 use Symfony\Component\Console\Event\ConsoleTerminateEvent;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
- * Console exception listener.
- *
- * Attempts to log exceptions or abnormal terminations of console commands.
- *
  * @author James Halsall <[email protected]>
+ * @author Robin Chalas <[email protected]>
  */
 class ExceptionListener implements EventSubscriberInterface
 {
-    /**
-     * @var LoggerInterface
-     */
-    protected $logger;
-
-    /**
-     * Constructor.
-     *
-     * @param LoggerInterface $logger A logger
-     */
+    private $logger;
+
     public function __construct(LoggerInterface $logger = null)
     {
         $this->logger = $logger;
     }
 
-    /**
-     * Handles console command exception.
-     *
-     * @param ConsoleExceptionEvent $event Console event
-     */
-    public function onKernelException(ConsoleExceptionEvent $event)
+    public function onConsoleException(ConsoleExceptionEvent $event)
     {
         if (null === $this->logger) {
             return;
         }
 
         $exception = $event->getException();
-        $input = (string) $event->getInput();
 
-        $this->logger->error('Exception thrown while running command: "{command}". Message: "{message}"', array('exception' => $exception, 'command' => $input, 'message' => $exception->getMessage()));
+        $this->logger->error('Exception thrown while running command "{command}". Message: "{message}"', array('exception' => $exception, 'command' => $this->getInputString($event), 'message' => $exception->getMessage()));
     }
 
-    /**
-     * Handles termination of console command.
-     *
-     * @param ConsoleTerminateEvent $event Console event
-     */
-    public function onKernelTerminate(ConsoleTerminateEvent $event)
+    public function onConsoleTerminate(ConsoleTerminateEvent $event)
     {
         if (null === $this->logger) {
             return;
         }
 
         $exitCode = $event->getExitCode();
 
-        if ($exitCode === 0) {
+        if (0 === $exitCode) {
             return;
         }
 
-        $input = (string) $event->getInput();
-
-        $this->logger->error('Command "{command}" exited with status code "{code}"', array('command' => (string) $input, 'code' => $exitCode));
+        $this->logger->error('Command "{command}" exited with code "{code}"', array('command' => $this->getInputString($event), 'code' => $exitCode));
     }
 
     public static function getSubscribedEvents()
     {
         return array(
-            ConsoleEvents::EXCEPTION => array('onKernelException', -128),
-            ConsoleEvents::TERMINATE => array('onKernelTerminate', -128),
+            ConsoleEvents::EXCEPTION => array('onConsoleException', -128),
+            ConsoleEvents::TERMINATE => array('onConsoleTerminate', -128),
         );
     }
+
+    private static function getInputString(ConsoleEvent $event)
+    {
+        $commandName = $event->getCommand()->getName();
+        $input = $event->getInput();
+
+        if (method_exists($input, '__toString')) {
+            return str_replace(array("'$commandName'", "\"$commandName\""), $commandName, (string) $input);
+        }
+
+        return $commandName;
+    }
 }

Tests/EventListener/ExceptionListenerTest.php

@@ -16,83 +16,110 @@
 use Symfony\Component\Console\Event\ConsoleExceptionEvent;
 use Symfony\Component\Console\Event\ConsoleTerminateEvent;
 use Symfony\Component\Console\EventListener\ExceptionListener;
+use Symfony\Component\Console\Input\ArgvInput;
 use Symfony\Component\Console\Input\ArrayInput;
-use Symfony\Component\Console\Tests\Output\TestOutput;
+use Symfony\Component\Console\Input\StringInput;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
 
 class ExceptionListenerTest extends \PHPUnit_Framework_TestCase
 {
-    public function testOnKernelException()
+    public function testOnConsoleException()
     {
-        $logger = $this->getLogger();
-        $listener = new ExceptionListener($logger);
-
         $exception = new \RuntimeException('An error occurred');
 
+        $logger = $this->getLogger();
         $logger
             ->expects($this->once())
             ->method('error')
-            ->with('Exception thrown while running command: "{command}". Message: "{message}"', array('exception' => $exception, 'command' => '\'test:run\' --foo=baz buzz', 'message' => 'An error occurred'))
+            ->with('Exception thrown while running command "{command}". Message: "{message}"', array('exception' => $exception, 'command' => 'test:run --foo=baz buzz', 'message' => 'An error occurred'))
         ;
 
-        $input = array(
-            'name' => 'test:run',
-            '--foo' => 'baz',
-            'bar' => 'buzz'
-        );
-
-        $listener->onKernelException($this->getConsoleExceptionEvent($exception, $input, 1));
+        $listener = new ExceptionListener($logger);
+        $listener->onConsoleException($this->getConsoleExceptionEvent($exception, new ArgvInput(array('console.php', 'test:run', '--foo=baz', 'buzz')), 1));
     }
 
-    public function testOnKernelTerminateForNonZeroExitCodeWritesToLog()
+    public function testOnConsoleTerminateForNonZeroExitCodeWritesToLog()
     {
         $logger = $this->getLogger();
-        $listener = new ExceptionListener($logger);
-
         $logger
             ->expects($this->once())
             ->method('error')
-            ->with('Command "{command}" exited with status code "{code}"', array('command' => '\'test:run\'', 'code' => 255))
+            ->with('Command "{command}" exited with code "{code}"', array('command' => 'test:run', 'code' => 255))
         ;
 
-        $listener->onKernelTerminate($this->getConsoleTerminateEvent(array('name' => 'test:run'), 255));
+        $listener = new ExceptionListener($logger);
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(array('console.php', 'test:run')), 255));
     }
 
-    public function testOnKernelTerminateForZeroExitCodeDoesNotWriteToLog()
+    public function testOnConsoleTerminateForZeroExitCodeDoesNotWriteToLog()
     {
         $logger = $this->getLogger();
-        $listener = new ExceptionListener($logger);
-
         $logger
             ->expects($this->never())
             ->method('error')
         ;
 
-        $listener->onKernelTerminate($this->getConsoleTerminateEvent(array('name' => 'test:run'), 0));
+        $listener = new ExceptionListener($logger);
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(array('console.php', 'test:run')), 0));
     }
 
     public function testGetSubscribedEvents()
     {
         $this->assertEquals(
             array(
-                'console.exception' => array('onKernelException', -128),
-                'console.terminate' => array('onKernelTerminate', -128),
+                'console.exception' => array('onConsoleException', -128),
+                'console.terminate' => array('onConsoleTerminate', -128),
             ),
             ExceptionListener::getSubscribedEvents()
         );
     }
 
+    public function testAllKindsOfInputCanBeLogged()
+    {
+        $logger = $this->getLogger();
+        $logger
+            ->expects($this->exactly(3))
+            ->method('error')
+            ->with('Command "{command}" exited with code "{code}"', array('command' => 'test:run --foo=bar', 'code' => 255))
+        ;
+
+        $listener = new ExceptionListener($logger);
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(array('console.php', 'test:run', '--foo=bar')), 255));
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArrayInput(array('name' => 'test:run', '--foo' => 'bar')), 255));
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new StringInput('test:run --foo=bar'), 255));
+    }
+
+    public function testCommandNameIsDisplayedForNonStringableInput()
+    {
+        $logger = $this->getLogger();
+        $logger
+            ->expects($this->once())
+            ->method('error')
+            ->with('Command "{command}" exited with code "{code}"', array('command' => 'test:run', 'code' => 255))
+        ;
+
+        $listener = new ExceptionListener($logger);
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent($this->getMockBuilder(InputInterface::class)->getMock(), 255));
+    }
+
     private function getLogger()
     {
         return $this->getMockForAbstractClass(LoggerInterface::class);
     }
 
-    private function getConsoleExceptionEvent(\Exception $exception, $input, $exitCode)
+    private function getConsoleExceptionEvent(\Exception $exception, InputInterface $input, $exitCode)
+    {
+        return new ConsoleExceptionEvent(new Command('test:run'), $input, $this->getOutput(), $exception, $exitCode);
+    }
+
+    private function getConsoleTerminateEvent(InputInterface $input, $exitCode)
     {
-        return new ConsoleExceptionEvent(new Command('test:run'), new ArrayInput($input), new TestOutput(), $exception, $exitCode);
+        return new ConsoleTerminateEvent(new Command('test:run'), $input, $this->getOutput(), $exitCode);
     }
 
-    private function getConsoleTerminateEvent($input, $exitCode)
+    private function getOutput()
     {
-        return new ConsoleTerminateEvent(new Command('test:run'), new ArrayInput($input), new TestOutput(), $exitCode);
+        return $this->getMockBuilder(OutputInterface::class)->getMock();
     }
 }