add the ability to serialize uuid types

elasticsearch/serializer.py

@@ -2,6 +2,7 @@ try:
     import simplejson as json
 except ImportError:
     import json
+import uuid
 from datetime import date, datetime
 from decimal import Decimal
 
@@ -28,6 +29,8 @@ class JSONSerializer(object):
             return data.isoformat()
         elif isinstance(data, Decimal):
             return float(data)
+        elif isinstance(data, uuid.UUID): 
+            return str(data)
         raise TypeError("Unable to serialize %r (type: %s)" % (data, type(data)))
 
     def loads(self, s):

test_elasticsearch/test_serializer.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 import sys
+import uuid
 
 from datetime import datetime
 from decimal import Decimal
@@ -18,6 +19,9 @@ class TestJSONSerializer(TestCase):
             raise SkipTest("Float rounding is broken in 2.6.")
         self.assertEquals('{"d": 3.8}', JSONSerializer().dumps({'d': Decimal('3.8')}))
 
+    def test_uuid_serialization(self):
+        self.assertEquals('{"d": "00000000-0000-0000-0000-000000000003"}', JSONSerializer().dumps({'d': uuid.UUID('00000000-0000-0000-0000-000000000003')}))
+
     def test_raises_serialization_error_on_dump_error(self):
         self.assertRaises(SerializationError, JSONSerializer().dumps, object())