Merge "Fix 499 client disconnected on COPY EC object"

swift/common/swob.py

@@ -1129,6 +1129,7 @@ class Response(object):
         self.request = request
         self.body = body
         self.app_iter = app_iter
+        self.response_iter = None
         self.status = status
         self.boundary = "%.32x" % random.randint(0, 256 ** 16)
         if request:
@@ -1324,6 +1325,17 @@ class Response(object):
                 return [body]
         return ['']
 
+    def fix_conditional_response(self):
+        """
+        You may call this once you have set the content_length to the whole
+        object length and body or app_iter to reset the content_length
+        properties on the request.
+
+        It is ok to not call this method, the conditional resposne will be
+        maintained for you when you __call__ the response.
+        """
+        self.response_iter = self._response_iter(self.app_iter, self._body)
+
     def absolute_location(self):
         """
         Attempt to construct an absolute location.
@@ -1374,12 +1386,15 @@ class Response(object):
         if not self.request:
             self.request = Request(env)
         self.environ = env
-        app_iter = self._response_iter(self.app_iter, self._body)
+
+        if not self.response_iter:
+            self.response_iter = self._response_iter(self.app_iter, self._body)
+
         if 'location' in self.headers and \
                 not env.get('swift.leave_relative_location'):
             self.location = self.absolute_location()
         start_response(self.status, self.headers.items())
-        return app_iter
+        return self.response_iter
 
 
 class HTTPException(Response, Exception):

swift/proxy/controllers/obj.py

@@ -2203,11 +2203,10 @@ class ECObjectController(BaseObjectController):
                 resp = self.best_response(
                     req, statuses, reasons, bodies, 'Object',
                     headers=headers)
-
-        self._fix_response_headers(resp)
+        self._fix_response(resp)
         return resp
 
-    def _fix_response_headers(self, resp):
+    def _fix_response(self, resp):
         # EC fragment archives each have different bytes, hence different
         # etags. However, they all have the original object's etag stored in
         # sysmeta, so we copy that here so the client gets it.
@@ -2215,6 +2214,7 @@ class ECObjectController(BaseObjectController):
             'X-Object-Sysmeta-Ec-Etag')
         resp.headers['Content-Length'] = resp.headers.get(
             'X-Object-Sysmeta-Ec-Content-Length')
+        resp.fix_conditional_response()
 
         return resp
 

test/functional/test_object.py

@@ -243,6 +243,23 @@ class TestObject(unittest.TestCase):
         self.assertEqual(resp.status, 200)
         self.assertEqual(dest_contents, source_contents)
 
+        # copy source to dest with COPY and range
+        def copy(url, token, parsed, conn):
+            conn.request('COPY', '%s/%s' % (parsed.path, source), '',
+                         {'X-Auth-Token': token,
+                          'Destination': dest,
+                          'Range': 'bytes=1-2'})
+            return check_response(conn)
+        resp = retry(copy)
+        resp.read()
+        self.assertEqual(resp.status, 201)
+
+        # contents of dest should be the same as source
+        resp = retry(get_dest)
+        dest_contents = resp.read()
+        self.assertEqual(resp.status, 200)
+        self.assertEqual(dest_contents, source_contents[1:3])
+
         # delete the copy
         resp = retry(delete)
         resp.read()

test/unit/proxy/controllers/test_obj.py

@@ -1458,6 +1458,40 @@ class TestECObjController(BaseObjectControllerMixin, unittest.TestCase):
         self.assertEquals(resp.status_int, 201)
         self.assertTrue(response_time < response_sleep)
 
+    def test_COPY_with_ranges(self):
+        req = swift.common.swob.Request.blank(
+            '/v1/a/c/o', method='COPY',
+            headers={'Destination': 'c1/o',
+                     'Range': 'bytes=5-10'})
+        # turn a real body into fragments
+        segment_size = self.policy.ec_segment_size
+        real_body = ('asdf' * segment_size)[:-10]
+
+        # split it up into chunks
+        chunks = [real_body[x:x + segment_size]
+                  for x in range(0, len(real_body), segment_size)]
+
+        # we need only first chunk to rebuild 5-10 range
+        fragments = self.policy.pyeclib_driver.encode(chunks[0])
+        fragment_payloads = []
+        fragment_payloads.append(fragments)
+
+        node_fragments = zip(*fragment_payloads)
+        self.assertEqual(len(node_fragments), self.replicas())  # sanity
+        headers = {'X-Object-Sysmeta-Ec-Content-Length': str(len(real_body))}
+        responses = [(200, ''.join(node_fragments[i]), headers)
+                     for i in range(POLICIES.default.ec_ndata)]
+        responses += [(201, '', {})] * self.obj_ring.replicas
+        status_codes, body_iter, headers = zip(*responses)
+        expect_headers = {
+            'X-Obj-Metadata-Footer': 'yes',
+            'X-Obj-Multiphase-Commit': 'yes'
+        }
+        with set_http_connect(*status_codes, body_iter=body_iter,
+                              headers=headers, expect_headers=expect_headers):
+            resp = req.get_response(self.app)
+        self.assertEquals(resp.status_int, 201)
+
 
 if __name__ == '__main__':
     unittest.main()