--- /dev/null
+<?php
+
+namespace Drupal\{{ machine_name }}\Logger;
+
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Logger\LogMessageParserInterface;
+use Drupal\Core\Logger\RfcLoggerTrait;
+use Drupal\Core\Logger\RfcLogLevel;
+use Psr\Log\LoggerInterface;
+
+/**
+ * Redirects logging messages to a file.
+ */
+class {{ class }} implements LoggerInterface {
+
+ use RfcLoggerTrait;
+
+ /**
+ * A configuration object containing system.file settings.
+ *
+ * @var \Drupal\Core\Config\Config
+ */
+ protected $config;
+
+ /**
+ * The message's placeholders parser.
+ *
+ * @var \Drupal\Core\Logger\LogMessageParserInterface
+ */
+ protected $parser;
+
+ /**
+ * The date formatter service.
+ *
+ * @var \Drupal\Core\Datetime\DateFormatterInterface
+ */
+ protected $dateFormatter;
+
+ /**
+ * Constructs a SysLog object.
+ *
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * The configuration factory object.
+ * @param \Drupal\Core\Logger\LogMessageParserInterface $parser
+ * The parser to use when extracting message variables.
+ * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+ * The date formatter service.
+ */
+ public function __construct(ConfigFactoryInterface $config_factory, LogMessageParserInterface $parser, DateFormatterInterface $date_formatter) {
+ $this->config = $config_factory->get('system.file');
+ $this->parser = $parser;
+ $this->dateFormatter = $date_formatter;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function log($level, $message, array $context = []) {
+
+ // Populate the message placeholders and then replace them in the message.
+ $message_placeholders = $this->parser->parseMessagePlaceholders($message, $context);
+ $message = empty($message_placeholders) ? $message : strtr($message, $message_placeholders);
+
+ $entry = [
+ 'message' => strip_tags($message),
+ 'date' => $this->dateFormatter->format($context['timestamp']),
+ 'type' => $context['channel'],
+ 'ip' => $context['ip'],
+ 'request_uri' => $context['request_uri'],
+ 'referer' => $context['referer'],
+ 'severity' => (string) RfcLogLevel::getLevels()[$level],
+ 'uid' => $context['uid'],
+ ];
+
+ file_put_contents(
+ $this->config->get('path.temporary') . '/drupal.log',
+ print_r($entry, TRUE),
+ FILE_APPEND
+ );
+ }
+
+}