added level to introspection processor

src/Monolog/Processor/IntrospectionProcessor.php

@@ -11,6 +11,8 @@
 
 namespace Monolog\Processor;
 
+use Monolog\Logger;
+
 /**
  * Injects line/file:class/function where the log message came from
  *
@@ -24,12 +26,24 @@ namespace Monolog\Processor;
  */
 class IntrospectionProcessor
 {
+    private $level;
+
+    public function __construct($level = Logger::DEBUG)
+    {
+        $this->level = $level;
+    }
+
     /**
      * @param  array $record
      * @return array
      */
     public function __invoke(array $record)
     {
+        // return if the level is not high enough
+        if ($record['level'] < $this->level) {
+            return $record;
+        }
+
         $trace = debug_backtrace();
 
         // skip first since it's always the current method

tests/Monolog/Processor/IntrospectionProcessorTest.php

@@ -26,6 +26,7 @@ function tester($handler, $record)
 
 namespace Monolog\Processor;
 
+use Monolog\Logger;
 use Monolog\TestCase;
 use Monolog\Handler\TestHandler;
 
@@ -62,4 +63,61 @@ class IntrospectionProcessorTest extends TestCase
         $this->assertEquals(null, $record['extra']['class']);
         $this->assertEquals('Acme\tester', $record['extra']['function']);
     }
+
+    public function testLevelTooLow()
+    {
+        $input = array(
+            'level' => Logger::DEBUG,
+            'extra' => array(),
+        );
+
+        $expected = $input;
+
+        $processor = new IntrospectionProcessor(Logger::CRITICAL);
+        $actual = $processor($input);
+
+        $this->assertEquals($expected, $actual);
+    }
+
+    public function testLevelEqual()
+    {
+        $input = array(
+            'level' => Logger::CRITICAL,
+            'extra' => array(),
+        );
+
+        $expected = $input;
+        $expected['extra'] = array(
+            'file' => null,
+            'line' => null,
+            'class' => 'ReflectionMethod',
+            'function' => 'invokeArgs',
+        );
+
+        $processor = new IntrospectionProcessor(Logger::CRITICAL);
+        $actual = $processor($input);
+
+        $this->assertEquals($expected, $actual);
+    }
+
+    public function testLevelHigher()
+    {
+        $input = array(
+            'level' => Logger::EMERGENCY,
+            'extra' => array(),
+        );
+
+        $expected = $input;
+        $expected['extra'] = array(
+            'file' => null,
+            'line' => null,
+            'class' => 'ReflectionMethod',
+            'function' => 'invokeArgs',
+        );
+
+        $processor = new IntrospectionProcessor(Logger::CRITICAL);
+        $actual = $processor($input);
+
+        $this->assertEquals($expected, $actual);
+    }
 }