py3: use six.moves.urllib.parse instead of urlparse

six is the canonical compatibility library for supporting
Python 2 and 3 in a single codebase.

The urlparse module  was removed in Python 3 and we should
use 'six.moves.urllib.parse' instead of 'urlparse' to make
code compatible with py 2 and 3 as well.

Partially-implements blueprint py3-compatibility

Change-Id: Ib27244d0583e81e307d5e4236cbf85d29566dde9

manila/api/common.py

@@ -15,10 +15,10 @@
 
 import os
 import re
-import urlparse
 
 from oslo.config import cfg
 import six
+from six.moves.urllib import parse
 import webob
 
 from manila.api.openstack import wsgi
@@ -159,7 +159,7 @@ def remove_version_from_href(href):
     Returns: 'http://www.manila.com'
 
     """
-    parsed_url = urlparse.urlsplit(href)
+    parsed_url = parse.urlsplit(href)
     url_parts = parsed_url.path.split('/', 2)
 
     # NOTE: this should match vX.X or vX
@@ -176,7 +176,7 @@ def remove_version_from_href(href):
 
     parsed_url = list(parsed_url)
     parsed_url[2] = new_path
-    return urlparse.urlunsplit(parsed_url)
+    return parse.urlunsplit(parsed_url)
 
 
 def dict_to_query_str(params):
@@ -249,10 +249,10 @@ class ViewBuilder(object):
     def _update_link_prefix(self, orig_url, prefix):
         if not prefix:
             return orig_url
-        url_parts = list(urlparse.urlsplit(orig_url))
-        prefix_parts = list(urlparse.urlsplit(prefix))
+        url_parts = list(parse.urlsplit(orig_url))
+        prefix_parts = list(parse.urlsplit(prefix))
         url_parts[0:2] = prefix_parts[0:2]
-        return urlparse.urlunsplit(url_parts)
+        return parse.urlunsplit(url_parts)
 
 
 class MetadataDeserializer(wsgi.MetadataXMLDeserializer):

manila/api/contrib/quotas.py

@@ -13,9 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import urlparse
 
 from oslo.utils import strutils
+from six.moves.urllib import parse
 import webob
 
 from manila.api import extensions
@@ -95,7 +95,7 @@ class QuotaSetsController(object):
     def show(self, req, id):
         context = req.environ['manila.context']
         authorize_show(context)
-        params = urlparse.parse_qs(req.environ.get('QUERY_STRING', ''))
+        params = parse.parse_qs(req.environ.get('QUERY_STRING', ''))
         user_id = None
         if self.ext_mgr.is_loaded('os-user-quotas'):
             user_id = params.get('user_id', [None])[0]
@@ -127,7 +127,7 @@ class QuotaSetsController(object):
         user_id = None
         if self.ext_mgr.is_loaded('os-user-quotas'):
             # Update user quotas only if the extended is loaded
-            params = urlparse.parse_qs(req.environ.get('QUERY_STRING', ''))
+            params = parse.parse_qs(req.environ.get('QUERY_STRING', ''))
             user_id = params.get('user_id', [None])[0]
 
         try:
@@ -220,7 +220,7 @@ class QuotaSetsController(object):
         if self.ext_mgr.is_loaded('os-extended-quotas'):
             context = req.environ['manila.context']
             authorize_delete(context)
-            params = urlparse.parse_qs(req.environ.get('QUERY_STRING', ''))
+            params = parse.parse_qs(req.environ.get('QUERY_STRING', ''))
             user_id = params.get('user_id', [None])[0]
             if user_id and not self.ext_mgr.is_loaded('os-user-quotas'):
                 raise webob.exc.HTTPNotFound()

manila/tests/integrated/api/client.py

@@ -13,9 +13,9 @@
 #    under the License.
 
 import httplib
-import urlparse
 
 from oslo.serialization import jsonutils
+from six.moves.urllib import parse
 
 from manila.openstack.common import log as logging
 
@@ -87,7 +87,7 @@ class TestOpenStackClient(object):
         _headers = {'Content-Type': 'application/json'}
         _headers.update(headers or {})
 
-        parsed_url = urlparse.urlparse(url)
+        parsed_url = parse.urlparse(url)
         port = parsed_url.port
         hostname = parsed_url.hostname
         scheme = parsed_url.scheme

tools/lintstack.py

@@ -31,7 +31,10 @@ from pylint.reporters import text
 ignore_codes = ["E1103"]
 # Note(maoy): the error message is the pattern of E0202. It should be ignored
 # for manila.tests modules
-ignore_messages = ["An attribute affected in manila.tests"]
+# Note(chen): the second error message is the pattern of [E0611]
+# It should be ignored because use six module to keep py3.X compatibility.
+ignore_messages = ["An attribute affected in manila.tests",
+                   "No name 'urllib' in module '_MovedItems'"]
 # Note(maoy): we ignore all errors in openstack.common because it should be
 # checked elsewhere. We also ignore manila.tests for now due to high false
 # positive rate.