Add max_length to config

Close #15

Author: hedii

readme.md

@@ -66,7 +66,7 @@ return [
             'name' => 'my-custom-name',
 
             // This optional option determines the system name sent with the
-            // message in the 'source' field. When Forgotten or set to null,
+            // message in the 'source' field. When forgotten or set to null,
             // the current hostname is used.
             'system_name' => null,
 
@@ -81,6 +81,12 @@ return [
             // This optional option determines the port on which the gelf
             // receiver host is listening. Default is 12201
             'port' => 12201,
+
+            // This optional option determines the maximum length per message
+            // field. When forgotten or set to null, the default value of 
+            // \Monolog\Formatter\GelfMessageFormatter::DEFAULT_MAX_LENGTH is
+            // used (currently this value is 32766)
+            'max_length' => null,
         ],
     ],
 ];

src/GelfLoggerFactory.php

@@ -66,7 +66,14 @@ public function __invoke(array $config): Logger
 
         $handler = new GelfHandler(new Publisher($transport), $this->level($config));
 
-        $handler->setFormatter(new GelfMessageFormatter($config['system_name'] ?? null, null, ''));
+        $handler->setFormatter(
+            new GelfMessageFormatter(
+                $systemName = $config['system_name'] ?? null,
+                $extraPrefix = null,
+                $contextPrefix = '',
+                $maxLength = $config['max_length'] ?? null
+            )
+        );
 
         foreach ($this->parseProcessors($config) as $processor) {
             $handler->pushProcessor(new $processor);

tests/GelfLoggerTest.php

@@ -133,6 +133,56 @@ public function it_should_call_the_udp_transport_method_when_nothing_is_provided
         $this->assertInstanceOf(UdpTransport::class, $transport);
     }
 
+    /** @test */
+    public function it_should_set_max_length_if_max_length_is_provided(): void
+    {
+        $this->app['config']->set('logging.channels.gelf', [
+            'driver' => 'custom',
+            'via' => GelfLoggerFactory::class,
+            'max_length' => 9999
+        ]);
+
+        $logger = Log::channel('gelf');
+
+        $this->assertSame(
+            9999,
+            $this->getAttribute($logger->getHandlers()[0]->getFormatter(), 'maxLength')
+        );
+    }
+
+    /** @test */
+    public function it_should_use_default_max_length_when_max_length_is_not_provided(): void
+    {
+        $this->app['config']->set('logging.channels.gelf', [
+            'driver' => 'custom',
+            'via' => GelfLoggerFactory::class
+        ]);
+
+        $logger = Log::channel('gelf');
+
+        $this->assertSame(
+            GelfMessageFormatter::DEFAULT_MAX_LENGTH,
+            $this->getAttribute($logger->getHandlers()[0]->getFormatter(), 'maxLength')
+        );
+    }
+
+    /** @test */
+    public function it_should_use_default_max_length_when_max_length_is_null(): void
+    {
+        $this->app['config']->set('logging.channels.gelf', [
+            'driver' => 'custom',
+            'via' => GelfLoggerFactory::class,
+            'max_length' => null
+        ]);
+
+        $logger = Log::channel('gelf');
+
+        $this->assertSame(
+            GelfMessageFormatter::DEFAULT_MAX_LENGTH,
+            $this->getAttribute($logger->getHandlers()[0]->getFormatter(), 'maxLength')
+        );
+    }
+
     /**
      * Get protected or private attribute from an object.
      * NOTICE: This method is for testing purposes only.