Merge pull request #1 from tsufiev/master

Add HTTPNotModified exception. Use raw_request for getting .tar.gz files...

metadataclient/common/exceptions.py

@@ -62,6 +62,10 @@ class HTTPMultipleChoices(HTTPException):
                                     self.details)
 
 
+class HTTPNotModified(HTTPException):
+    code = 304
+
+
 class BadRequest(HTTPException):
     """DEPRECATED!"""
     code = 400

metadataclient/common/http.py

@@ -235,7 +235,7 @@ class HTTPClient(object):
         elif resp.status in (301, 302, 305):
             # Redirected. Reissue the request to the new location.
             return self._http_request(resp['location'], method, **kwargs)
-        elif resp.status == 300:
+        elif resp.status in (300, 304):
             raise exc.from_response(resp)
 
         return resp, body_iter
@@ -272,12 +272,6 @@ class HTTPClient(object):
                 kwargs['headers']['Transfer-Encoding'] = 'chunked'
         return self._http_request(url, method, **kwargs)
 
-    def archive_request(self, method, url, **kwargs):
-        kwargs.setdefault('headers', {})
-        kwargs['headers'].setdefault('Content-Type',
-                                     'application/x-tar')
-        return self._http_request(url, method, **kwargs)
-
 
 class OpenSSLConnectionDelegator(object):
     """

metadataclient/v1/metadata_client.py

@@ -39,7 +39,7 @@ class Controller(object):
 
         """
         url = '/v1/client/ui'
-        resp, body = self.http_client.archive_request('GET', url)
+        resp, body = self.http_client.raw_request('GET', url)
         return body
 
     def get_conductor_data(self):
@@ -48,5 +48,5 @@ class Controller(object):
 
         """
         url = '/v1/client/conductor'
-        resp, body = self.http_client.archive_request('GET', url)
+        resp, body = self.http_client.raw_request('GET', url)
         return body