Generate reference documentation for Workbooks

Change-Id: I2979fa781962a4a73b4a5e984126d9ef15a48c37

doc/source/_exts/workbooks.py

@@ -0,0 +1,121 @@
+#    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.
+import os
+
+from docutils import nodes
+from docutils.parsers import rst
+from docutils.statemachine import ViewList
+from sphinx.util.nodes import nested_parse_with_titles
+import yaml
+
+
+WORKFLOW_PATH = os.path.abspath(
+    os.path.join(os.path.dirname(__file__), '../../../workbooks', ))
+
+
+def _title(name):
+    return name.replace('_', ' ').capitalize() + " Workbook"
+
+
+def _workbook_to_rst(name, workbook):
+
+    title = _title(name)
+
+    yield '.. _workbook-%s:' % name
+    yield ''
+    yield '=' * len(title)
+    yield title
+    yield '=' * len(title)
+    yield ''
+    yield ':Workbook name: {}'.format(workbook['name'])
+    yield ''
+    if 'description' in workbook:
+        yield workbook['description']
+        yield ''
+    yield 'Workflows in the {} Workbook'.format(title)
+    yield ''
+
+    for wf_name, workflow in sorted(workbook['workflows'].items()):
+
+        yield '.. object:: ' + workbook['name'] + '.' + wf_name
+        yield ''
+
+        if 'type' in workflow:
+            yield '   :type: {}'.format(workflow['type'])
+            yield ''
+
+        if 'description' in workflow:
+            yield '   {}'.format(workflow['description'])
+            yield ''
+
+        yield '   Workflow inputs:'
+        yield ''
+        for input_param in workflow['input']:
+            try:
+                yield '   :input {}: Default: {}'.format(
+                    *input_param.items()[0])
+            except:
+                yield '   :input {}: Required.'.format(input_param)
+        yield ''
+
+
+def get_workbooks():
+
+    all_workbooks = {}
+
+    for root, dirs, files in os.walk(WORKFLOW_PATH):
+        for file in files:
+            with open(os.path.join(root, file)) as f:
+                all_workbooks[file.split('.')[0]] = yaml.safe_load(f)
+
+    return all_workbooks
+
+
+def _write_workbook_pages(app):
+    all_workbooks = get_workbooks()
+    files = []
+
+    for name, workbook in all_workbooks.items():
+        filename = 'doc/source/reference/workbooks/%s.rst' % name
+        app.info('generating workbook page for %s' % name)
+        with open(filename, 'w') as f:
+            f.write('\n'.join(_workbook_to_rst(name, workbook)))
+        files.append(filename)
+    return files
+
+
+class WorkflowListDirective(rst.Directive):
+
+    has_content = False
+
+    def run(self):
+        all_workbooks = get_workbooks()
+
+        # Build the view of the data to be parsed for rendering.
+        result = ViewList()
+        for workbook_name in sorted(all_workbooks.keys()):
+            workbook = all_workbooks[workbook_name]
+            for line in _workbook_to_rst(workbook_name, workbook):
+                result.append(line, '<' + __name__ + '>')
+
+        # Parse what we have into a new section.
+        node = nodes.section()
+        node.document = self.state.document
+        nested_parse_with_titles(self.state, result, node)
+
+        return node.children
+
+
+def setup(app):
+    app.info('loading workbooks extension')
+    app.add_directive('workbooklist', WorkflowListDirective)
+    _write_workbook_pages(app)

doc/source/conf.py

@@ -15,15 +15,19 @@
 import os
 import sys
 
+# Add the project
 sys.path.insert(0, os.path.abspath('../..'))
+# Add the extensions
+sys.path.insert(0, os.path.join(os.path.abspath('.'), '_exts'))
+
 # -- General configuration ----------------------------------------------------
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
 extensions = [
+    'oslosphinx',
     'sphinx.ext.autodoc',
-    #'sphinx.ext.intersphinx',
-    'oslosphinx'
+    'workbooks'
 ]
 
 # autodoc generation is a bit aggressive and a nuisance when doing heavy
@@ -72,4 +76,4 @@ latex_documents = [
 ]
 
 # Example configuration for intersphinx: refer to the Python standard library.
-#intersphinx_mapping = {'http://docs.python.org/': None}
+# intersphinx_mapping = {'http://docs.python.org/': None}

doc/source/index.rst

@@ -17,6 +17,7 @@ Contents:
    images
    tripleo-mistral
    contributing
+   reference/index
 
 Indices and tables
 ==================

doc/source/reference/index.rst

@@ -0,0 +1,14 @@
+===========================
+API Reference Documentation
+===========================
+
+
+Workbooks
+=========
+
+.. toctree::
+   :maxdepth: 2
+   :glob:
+   :titlesonly:
+
+   workbooks/*

doc/source/reference/workbooks/.gitignore

@@ -0,0 +1 @@
+*.rst

test-requirements.txt

@@ -13,3 +13,4 @@ oslotest>=1.10.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT
+PyYAML>=3.1.0  # MIT