nova/doc/ext/versioned_notifications.py
Balazs Gibizer e5798f9f9d Enhance notification doc generation with samples
Until now the notification devref only contained a link to the sample file
and that link did only exist after the sample file was merged.
This is suboptimal as the locally generated doc might be incomplete.

This patch changes the doc to contain the content of the sample file.

Change-Id: I4343a2feb13de8b614e8d42d5f1db14102ab492e
2016-07-20 17:33:32 +00:00

134 lines
4.1 KiB
Python

# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
This provides a sphinx extension able to list the implemented versioned
notifications into the developer documentation.
It is used via a single directive in the .rst file
.. versioned_notifications::
"""
from sphinx.util.compat import Directive
from docutils import nodes
from nova.notifications.objects import base as notification
from nova.objects import base
class VersionedNotificationDirective(Directive):
SAMPLE_ROOT = 'doc/notification_samples/'
TOGGLE_SCRIPT = """
<script>
jQuery(document).ready(function(){
jQuery('#%s-div').toggle('show');
jQuery('#%s-hideshow').on('click', function(event) {
jQuery('#%s-div').toggle('show');
});
});
</script>
"""
def run(self):
notifications = self._collect_notifications()
return self._build_markup(notifications)
def _collect_notifications(self):
base.NovaObjectRegistry.register_notification_objects()
notifications = []
ovos = base.NovaObjectRegistry.obj_classes()
for name, cls in ovos.items():
cls = cls[0]
if (issubclass(cls, notification.NotificationBase) and
cls != notification.NotificationBase):
payload_name = cls.fields['payload'].objname
payload_cls = ovos[payload_name][0]
for sample in cls.samples:
notifications.append((cls.__name__,
payload_cls.__name__,
sample))
return sorted(notifications)
def _build_markup(self, notifications):
content = []
cols = ['Event type', 'Notification class', 'Payload class', 'Sample']
table = nodes.table()
content.append(table)
group = nodes.tgroup(cols=len(cols))
table.append(group)
head = nodes.thead()
group.append(head)
for _ in cols:
group.append(nodes.colspec(colwidth=1))
body = nodes.tbody()
group.append(body)
# fill the table header
row = nodes.row()
body.append(row)
for col_name in cols:
col = nodes.entry()
row.append(col)
text = nodes.strong(text=col_name)
col.append(text)
# fill the table content, one notification per row
for name, payload, sample_file in notifications:
event_type = sample_file[0: -5].replace('-', '.')
row = nodes.row()
body.append(row)
col = nodes.entry()
row.append(col)
text = nodes.literal(text=event_type)
col.append(text)
col = nodes.entry()
row.append(col)
text = nodes.literal(text=name)
col.append(text)
col = nodes.entry()
row.append(col)
text = nodes.literal(text=payload)
col.append(text)
col = nodes.entry()
row.append(col)
with open(self.SAMPLE_ROOT + sample_file, 'r') as f:
sample_content = f.read()
event_type = sample_file[0: -5]
html_str = self.TOGGLE_SCRIPT % ((event_type, ) * 3)
html_str += ("<input type='button' id='%s-hideshow' "
"value='hide/show sample'>" % event_type)
html_str += ("<div id='%s-div'><pre>%s</pre></div>"
% (event_type, sample_content))
raw = nodes.raw('', html_str, format="html")
col.append(raw)
return content
def setup(app):
app.add_directive('versioned_notifications',
VersionedNotificationDirective)