1 files changed, 23 insertions, 1 deletions
diff --git a/aws/aws-sdk-php/src/Credentials/Credentials.php b/aws/aws-sdk-php/src/Credentials/Credentials.php
index bd2bdc90..aca605a9 100644
--- a/aws/aws-sdk-php/src/Credentials/Credentials.php
+++ b/aws/aws-sdk-php/src/Credentials/Credentials.php
@@ -76,16 +76,38 @@ class Credentials implements CredentialsInterface, \Serializable
 
     public function serialize()
     {
-        return json_encode($this->toArray());
+        return json_encode($this->__serialize());
     }
 
     public function unserialize($serialized)
     {
         $data = json_decode($serialized, true);
 
+        $this->__unserialize($data);
+    }
+
+    public function __serialize()
+    {
+        return $this->toArray();
+    }
+
+    public function __unserialize($data)
+    {
         $this->key = $data['key'];
         $this->secret = $data['secret'];
         $this->token = $data['token'];
         $this->expires = $data['expires'];
     }
+
+    public function extendExpiration() {
+        $extension = mt_rand(5, 10);
+        $this->expires = time() + $extension * 60;
+
+        $message = <<<EOT
+Attempting credential expiration extension due to a credential service 
+availability issue. A refresh of these credentials will be attempted again 
+after {$extension} minutes.\n
+EOT;
+        error_log($message);
+    }
 }