--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Translation;
+
+use Psr\Log\LoggerInterface;
+
+/**
+ * @author Abdellatif Ait boudad <a.aitboudad@gmail.com>
+ */
+class LoggingTranslator implements TranslatorInterface, TranslatorBagInterface
+{
+ /**
+ * @var TranslatorInterface|TranslatorBagInterface
+ */
+ private $translator;
+
+ /**
+ * @var LoggerInterface
+ */
+ private $logger;
+
+ /**
+ * @param TranslatorInterface $translator The translator must implement TranslatorBagInterface
+ * @param LoggerInterface $logger
+ */
+ public function __construct(TranslatorInterface $translator, LoggerInterface $logger)
+ {
+ if (!$translator instanceof TranslatorBagInterface) {
+ throw new \InvalidArgumentException(sprintf('The Translator "%s" must implement TranslatorInterface and TranslatorBagInterface.', get_class($translator)));
+ }
+
+ $this->translator = $translator;
+ $this->logger = $logger;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+ {
+ $trans = $this->translator->trans($id, $parameters, $domain, $locale);
+ $this->log($id, $domain, $locale);
+
+ return $trans;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+ {
+ $trans = $this->translator->transChoice($id, $number, $parameters, $domain, $locale);
+ $this->log($id, $domain, $locale);
+
+ return $trans;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setLocale($locale)
+ {
+ $this->translator->setLocale($locale);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getLocale()
+ {
+ return $this->translator->getLocale();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getCatalogue($locale = null)
+ {
+ return $this->translator->getCatalogue($locale);
+ }
+
+ /**
+ * Gets the fallback locales.
+ *
+ * @return array $locales The fallback locales
+ */
+ public function getFallbackLocales()
+ {
+ if ($this->translator instanceof Translator) {
+ return $this->translator->getFallbackLocales();
+ }
+
+ return array();
+ }
+
+ /**
+ * Passes through all unknown calls onto the translator object.
+ */
+ public function __call($method, $args)
+ {
+ return call_user_func_array(array($this->translator, $method), $args);
+ }
+
+ /**
+ * Logs for missing translations.
+ *
+ * @param string $id
+ * @param string|null $domain
+ * @param string|null $locale
+ */
+ private function log($id, $domain, $locale)
+ {
+ if (null === $domain) {
+ $domain = 'messages';
+ }
+
+ $id = (string) $id;
+ $catalogue = $this->translator->getCatalogue($locale);
+ if ($catalogue->defines($id, $domain)) {
+ return;
+ }
+
+ if ($catalogue->has($id, $domain)) {
+ $this->logger->debug('Translation use fallback catalogue.', array('id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()));
+ } else {
+ $this->logger->warning('Translation not found.', array('id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()));
+ }
+ }
+}