Show version in PDFs

To fix version display in PDFs, move config changes to config-inited
event.

First config-inited is called, then
builder-inited is called after the builder is setup. The builder might
use values from the config to set internal values.

This happens with the latex builder that takes version and release and
puts them into internal values.

So far, openstackdocstheme used builder-inited and setting version and
release from the theme happened to late. Move all config settings to a
config-inited phase so that it is early - and thus the latex builder can
create PDFs with version numbers.

Change-Id: Icdd308ba13de56bab13e97e3afc6338a7181dcbf

openstackdocstheme/ext.py

@@ -352,57 +352,46 @@ def _get_project_name(srcdir):
     return _project
 
 
-def _builder_inited(app):
-    theme_dir = paths.get_html_theme_path()
-    logger.info(
-        '[openstackdocstheme] using theme from %s (version %s)',
-        theme_dir,
-        version.version_info.version_string(),
-    )
+def _config_inited(app, config):
 
-    if app.config.openstack_projects is not None:
+    if config.openstack_projects is not None:
         logger.info(
             "[openstackdocstheme] "
             "the 'openstack_projects' config option has been deprecated and "
             "replaced by the 'openstackdocs_projects' option; support "
             "for the former will be dropped in a future release"
         )
-        app.config.openstackdocs_projects = app.config.openstack_projects
-
-    _setup_link_roles(app)
+        config.openstackdocs_projects = config.openstack_projects
 
     # we only override configuration if the theme has been configured, meaning
     # users are using these features
-    if app.config.html_theme not in ['openstackdocs', 'starlingxdocs']:
+    if config.html_theme not in ['openstackdocs', 'starlingxdocs']:
         return
 
-    # TODO(stephenfin): Once Sphinx 1.8 is released, we should move the below
-    # to a 'config-inited' handler
-
-    if app.config.openstackdocs_auto_name:
+    if config.openstackdocs_auto_name:
         project_name = _get_project_name(app.srcdir)
 
-        if app.config.project and project_name:
+        if config.project and project_name:
             logger.info(
                 "[openstackdocstheme] "
                 "overriding configured project name (%s) with name extracted "
                 "from the package (%s); you can disable this behavior with "
                 "the 'openstackdocs_auto_name' option",
-                app.config.project, project_name,
+                config.project, project_name,
             )
 
         if project_name:
-            app.config.project = project_name
+            config.project = project_name
 
-    app.config.html_last_updated_fmt = '%Y-%m-%d %H:%M'
+    config.html_last_updated_fmt = '%Y-%m-%d %H:%M'
 
-    if app.config.openstackdocs_auto_version is False:
+    if config.openstackdocs_auto_version is False:
         logger.debug(
             '[openstackdocstheme] auto-versioning disabled (configured by '
             'user)'
         )
         auto_version = False
-    elif app.config.openstackdocs_auto_version is True:
+    elif config.openstackdocs_auto_version is True:
         logger.debug(
             '[openstackdocstheme] auto-versioning enabled (configured by user)'
         )
@@ -434,8 +423,21 @@ def _builder_inited(app):
                 'project; defaulting to unversioned'
             )
 
-        app.config.version = project_version
-        app.config.release = project_version
+        config.version = project_version
+        config.release = project_version
+
+
+def _builder_inited(app):
+
+    theme_dir = paths.get_html_theme_path()
+    logger.info('[openstackdocstheme] using theme from %s', theme_dir)
+
+    _setup_link_roles(app)
+
+    # we only override configuration if the theme has been configured, meaning
+    # users are using these features
+    if app.config.html_theme not in ['openstackdocs', 'starlingxdocs']:
+        return
 
     # Override default setting
     app.config.latex_engine = 'xelatex'
@@ -468,9 +470,14 @@ def _builder_inited(app):
 
 
 def setup(app):
+    logger.info(
+        '[openstackdocstheme] version: %s',
+        version.version_info.version_string(),
+    )
     logger.debug('[openstackdocstheme] connecting events')
 
     # extensions
+    app.connect('config-inited', _config_inited)
     app.connect('builder-inited', _builder_inited)
     app.connect('html-page-context', _html_page_context)
 

releasenotes/notes/pdf-version-56c223128dff8357.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    PDF files will now automatically display the version number
+    like HTML files do already if ``openstackdocs_auto_version``
+    is ``True`` (default value).