Add AWS DynamoDB handler

This also adds the `aws/aws-sdk-php` dev dependency

tests/Monolog/Handler/DynamoDbHandlerTest.php

@@ -0,0 +1,71 @@
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Handler;
+
+use Monolog\TestCase;
+
+class DynamoDbHandlerTest extends TestCase
+{
+    public function setUp()
+    {
+        if (!class_exists('Aws\DynamoDb\DynamoDbClient')) {
+            $this->markTestSkipped('aws/aws-sdk-php not installed');
+        }
+
+        $this->client = $this->getMockBuilder('Aws\DynamoDb\DynamoDbClient')->disableOriginalConstructor()->getMock();
+    }
+
+    public function testConstruct()
+    {
+        $this->assertInstanceOf('Monolog\Handler\DynamoDbHandler', new DynamoDbHandler($this->client, 'foo'));
+    }
+
+    public function testInterface()
+    {
+        $this->assertInstanceOf('Monolog\Handler\HandlerInterface', new DynamoDbHandler($this->client, 'foo'));
+    }
+
+    public function testGetFormatter()
+    {
+        $handler = new DynamoDbHandler($this->client, 'foo');
+        $this->assertInstanceOf('Monolog\Formatter\ScalarFormatter', $handler->getFormatter());
+    }
+
+    public function testHandle()
+    {
+        $record = $this->getRecord();
+        $formatter = $this->getMock('Monolog\Formatter\FormatterInterface');
+        $formatted = array('foo' => 1, 'bar' => 2);
+        $handler = new DynamoDbHandler($this->client, 'foo');
+        $handler->setFormatter($formatter);
+
+        $formatter
+             ->expects($this->once())
+             ->method('format')
+             ->with($record)
+             ->will($this->returnValue($formatted));
+        $this->client
+             ->expects($this->once())
+             ->method('formatAttributes')
+             ->with($this->isType('array'))
+             ->will($this->returnValue($formatted));
+        $this->client
+             ->expects($this->once())
+             ->method('__call')
+             ->with('putItem', array(array(
+                 'TableName' => 'foo',
+                 'Item' => $formatted
+             )));
+
+        $handler->handle($record);
+    }
+}