Update sphinx logging to not use app object1.30.0

Logging via the application object was deprecated in sphinx 1.6 and is
now removed in the master branch that will become 2.0. This updates our
sphinx extension to use the recommended sphinx.util.logging instead.

Closes-bug: #1798174

Change-Id: Ie66579146d68680905c3eac3d256369309130cf4
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/stevedore/sphinxext.py b/stevedore/sphinxext.py
index 3c9b6ce..8ca88bb 100644
--- a/stevedore/sphinxext.py
+++ b/stevedore/sphinxext.py
@@ -18,10 +18,13 @@ from docutils import nodes
 from docutils.parsers import rst
 from docutils.parsers.rst import directives
 from docutils.statemachine import ViewList
+from sphinx.util import logging
 from sphinx.util.nodes import nested_parse_with_titles
 
 from stevedore import extension
 
+LOG = logging.getLogger(__name__)
+
 
 def _get_docstring(plugin):
     return inspect.getdoc(plugin) or ''
@@ -72,16 +75,13 @@ class ListPluginsDirective(rst.Directive):
     has_content = True
 
     def run(self):
-        env = self.state.document.settings.env
-        app = env.app
-
         namespace = ' '.join(self.content).strip()
-        app.info('documenting plugins from %r' % namespace)
+        LOG.info('documenting plugins from %r' % namespace)
         overline_style = self.options.get('overline-style', '')
         underline_style = self.options.get('underline-style', '=')
 
         def report_load_failure(mgr, ep, err):
-            app.warn(u'Failed to load %s: %s' % (ep.module_name, err))
+            LOG.warning(u'Failed to load %s: %s' % (ep.module_name, err))
 
         mgr = extension.ExtensionManager(
             namespace,
@@ -111,5 +111,5 @@ class ListPluginsDirective(rst.Directive):
 
 
 def setup(app):
-    app.info('loading stevedore.sphinxext')
+    LOG.info('loading stevedore.sphinxext')
     app.add_directive('list-plugins', ListPluginsDirective)