Added the support of a logging context

src/Monolog/Handler/AbstractProcessingHandler.php

@@ -36,7 +36,7 @@ abstract class AbstractProcessingHandler extends AbstractHandler
 
         $record = $this->processRecord($record);
 
-        $record['message'] = $this->getFormatter()->format($record);
+        $record['formatted'] = $this->getFormatter()->format($record);
 
         $this->write($record);
 

src/Monolog/Handler/FirePHPHandler.php

@@ -79,7 +79,7 @@ class FirePHPHandler extends AbstractProcessingHandler
         // but we're not taking advantage of that (yet), so we're using "1" for simplicity's sake.
         return $this->createHeader(
             array(1, 1, 1, self::$messageIndex++),
-            $record['message']
+            $record['formatted']
         );
     }
 

src/Monolog/Handler/MailHandler.php

@@ -33,7 +33,7 @@ abstract class MailHandler extends AbstractProcessingHandler
         }
 
         if (!empty($messages)) {
-            $this->send($this->getFormatter()->formatBatch($messages));
+            $this->send((string) $this->getFormatter()->formatBatch($messages));
         }
     }
 
@@ -49,8 +49,6 @@ abstract class MailHandler extends AbstractProcessingHandler
      */
     protected function write(array $record)
     {
-        $content = $record['message'];
-
-        $this->send($content);
+        $this->send((string) $record['formatted']);
     }
 }

src/Monolog/Handler/StreamHandler.php

@@ -67,6 +67,6 @@ class StreamHandler extends AbstractProcessingHandler
                 throw new \UnexpectedValueException(sprintf('The stream or file "%s" could not be opened; it may be invalid or not writable.', $this->url));
             }
         }
-        fwrite($this->stream, (string) $record['message']);
+        fwrite($this->stream, (string) $record['formatted']);
     }
 }

src/Monolog/Handler/SyslogHandler.php

@@ -104,6 +104,6 @@ class SyslogHandler extends AbstractProcessingHandler
      */
     protected function write(array $record)
     {
-        syslog($this->logLevels[$record['level']], (string) $record['message']);
+        syslog($this->logLevels[$record['level']], (string) $record['formatted']);
     }
 }