PDF documentation build

The following changes are made for PDF document.

- Sample config/policy files are skipped for PDF doc build.
  We hit several problems around verbatim of inline samples
  in neutron, nova and others, so we decided to skip them now.
  Downloadable links also should be avoided in PDF doc
  as PDF doc is expected to work alone.
- tocdepth for latex is explicitly set to 3 for better navigation
  in the generated PDF. The default was 1 and we cannot provide
  enough information in PDF TOC.
- The module index is disabled as the neutron document does not
  generate a full module index and it shows only partial entries.
  'makeindex' and 'printindex' are set to empty in latex_elements.

The existing contents (mainly the top page) are reorganized a bit
for a better TOC of the generated PDF document:

- The top page of the documentation is simplified only with toctree
  to avoid almost duplicated entries in the TOC of the PDF documentation.
  The current TOC for PDF doc seems to use section titles as the first
  level and title of linked pages as the second level. They are almost
  same and the generated TOC would be redundant.
- The link to the API reference in the top page was moved
  to a subdirectory so that PDF TOC can include it.
- 'Search' section is shown in index.rst only when the builder is 'html'
  as this section uses a form and makes sense only for HTML doc.

Story: 2006099
Task: 35127
Depends-On: https://review.opendev.org/664555
Change-Id: I6f1614a643efa7fad3c2a6ce5692d6873ca0ebd0

doc/source/_intro.rst

@@ -0,0 +1,32 @@
+..
+      Copyright 2011- OpenStack Foundation
+      All Rights Reserved.
+
+      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.
+
+Neutron is an OpenStack project to provide "network connectivity as a service"
+between interface devices (e.g., vNICs) managed by other OpenStack services
+(e.g., nova). It implements the `OpenStack Networking API`_.
+
+.. _`OpenStack Networking API`: https://docs.openstack.org/api-ref/network/
+
+This documentation is generated by the Sphinx toolkit and lives in the source
+tree.  Additional documentation on Neutron and other components of OpenStack
+can be found on the `OpenStack wiki`_ and the `Neutron section of the wiki`.
+The `Neutron Development wiki`_ is also a good resource for new contributors.
+
+.. _`OpenStack wiki`: https://wiki.openstack.org
+.. _`Neutron section of the wiki`: https://wiki.openstack.org/Neutron
+.. _`Neutron Development wiki`: https://wiki.openstack.org/NeutronDevelopment
+
+Enjoy!

doc/source/cli/neutron-debug.rst

@@ -1,8 +1,8 @@
 .. This file is manually generated, unlike many of the other chapters.
 
-=================================
+=============
-neutron-debug command-line client
+neutron-debug
-=================================
+=============
 
 The :command:`neutron-debug` client is an extension to the :command:`neutron`
 command-line interface (CLI) for the OpenStack neutron-debug tool.

doc/source/cli/neutron-sanity-check.rst

@@ -1,8 +1,8 @@
 .. This file is manually generated, unlike many of the other chapters.
 
-========================================
+====================
-neutron-sanity-check command-line client
+neutron-sanity-check
-========================================
+====================
 
 The :command:`neutron-sanity-check` client is a tool that checks various
 sanity about the Networking service.

doc/source/cli/neutron-status.rst

@@ -1,8 +1,8 @@
 .. This file is manually generated, unlike many of the other chapters.
 
-==================================
+==============
-neutron-status command-line client
+neutron-status
-==================================
+==============
 
 The :command:`neutron-status` provides routines for checking the status of
 Neutron deployment.

doc/source/conf.py

@@ -235,7 +235,7 @@ htmlhelp_basename = 'neutrondoc'
 # (source start file, target name, title, author,
 # documentclass [howto/manual]).
 latex_documents = [
-    ('index', 'Neutron.tex', u'Neutron Documentation',
+    ('pdf-index', 'neutron.tex', u'Neutron Documentation',
      u'Neutron development team', 'manual'),
 ]
 
@@ -247,15 +247,23 @@ latex_documents = [
 # not chapters.
 #latex_use_parts = False
 
-# Additional stuff for the LaTeX preamble.
-#latex_preamble = ''
-
 # Documents to append as an appendix to all manuals.
 #latex_appendices = []
 
 # If false, no module index is generated.
 #latex_use_modindex = True
 
+# Disable usage of xindy https://bugzilla.redhat.com/show_bug.cgi?id=1643664
+latex_use_xindy = False
+
+latex_domain_indices = False
+
+latex_elements = {
+    'makeindex': '',
+    'printindex': '',
+    'preamble': r'\setcounter{tocdepth}{3}',
+}
+
 # -- Options for oslo_config.sphinxconfiggen ---------------------------------
 
 _config_generator_config_files = [

doc/source/configuration/config.rst

@@ -4,10 +4,21 @@ Configuration Reference
 
 This section provides a list of all configuration options for various neutron
 services. These are auto-generated from neutron code when this documentation is
-built. Configuration filenames used below are filenames usually used, but there
+built.
+
+Configuration filenames used below are filenames usually used, but there
 is no restriction on configuration filename in neutron and you can use
 arbitrary file names.
 
+.. only:: html
+
+   For sample configuration files, refer to :doc:`config-samples`.
+
+   .. toctree::
+      :hidden:
+
+      config-samples
+
 .. toctree::
    :maxdepth: 1
 

doc/source/configuration/index.rst

@@ -1,26 +1,11 @@
 .. _configuring:
 
-===========================
+===================
-Neutron Configuration Guide
+Configuration Guide
-===========================
+===================
-
-Configuration
--------------
 
 .. toctree::
    :maxdepth: 1
 
    config
-   config-samples
+   policy
-
-Policy
-------
-
-Neutron, like most OpenStack projects, uses a policy language to restrict
-permissions on REST API actions.
-
-.. toctree::
-   :maxdepth: 1
-
-   Policy Reference <policy>
-   policy-sample

doc/source/configuration/policy.rst

@@ -1,9 +1,20 @@
-========================
+================
-Neutron Policy Reference
+Policy Reference
-========================
+================
+
+Neutron, like most OpenStack projects, uses a policy language to restrict
+permissions on REST API actions.
 
 The following is an overview of all available policies in neutron.
-For a sample configuration file, refer to :doc:`/configuration/policy-sample`.
+
+.. only:: html
+
+   For a sample policy file, refer to :doc:`/configuration/policy-sample`.
+
+   .. toctree::
+      :hidden:
+
+      policy-sample
 
 .. show-policy::
       :config-file: etc/oslo-policy-generator/policy.conf

doc/source/index.rst

@@ -17,22 +17,10 @@
 Welcome to Neutron's documentation!
 ===================================
 
-Neutron is an OpenStack project to provide "network connectivity as a service"
+.. include:: _intro.rst
-between interface devices (e.g., vNICs) managed by other OpenStack services
-(e.g., nova). It implements the `Neutron API`_.
 
-.. _`Neutron API`: https://docs.openstack.org/api-ref/network/
+.. We use different index pages for HTML and PDF documents for better TOC.
-
+   Please ensure to update pdf-index.rst when you update the index below.
-This documentation is generated by the Sphinx toolkit and lives in the source
-tree.  Additional documentation on Neutron and other components of OpenStack
-can be found on the `OpenStack wiki`_ and the `Neutron section of the wiki`.
-The `Neutron Development wiki`_ is also a good resource for new contributors.
-
-.. _`OpenStack wiki`: https://wiki.openstack.org
-.. _`Neutron section of the wiki`: https://wiki.openstack.org/Neutron
-.. _`Neutron Development wiki`: https://wiki.openstack.org/NeutronDevelopment
-
-Enjoy!
 
 Installation Guide
 ------------------
@@ -81,10 +69,11 @@ Contributor Guide
 
    contributor/index
 
-API Extensions
+API Reference
---------------
+-------------
 
-Go to https://docs.openstack.org/api-ref/network/ for information about the OpenStack Network API and its extensions.
+Go to https://docs.openstack.org/api-ref/network/ for information
+about the OpenStack Network API and its extensions.
 
 Search
 ------

doc/source/install/index.rst

@@ -1,8 +1,8 @@
 .. _networking:
 
-==================
+=====================================
-Networking service
+Networking service Installation Guide
-==================
+=====================================
 
 .. toctree::
    :maxdepth: 1

doc/source/pdf-index.rst

@@ -0,0 +1,30 @@
+:orphan:
+
+..
+      Copyright 2011- OpenStack Foundation
+      All Rights Reserved.
+
+      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.
+
+.. include:: _intro.rst
+
+.. toctree::
+   :maxdepth: 2
+
+   install/index
+   admin/index
+   configuration/index
+   cli/index
+   reference/rest-api
+   feature_classification/index
+   contributor/index

doc/source/reference/rest-api.rst

@@ -0,0 +1,6 @@
+=============
+API Reference
+=============
+
+The reference of the OpenStack networking API is found at
+https://docs.openstack.org/api-ref/network/.

tox.ini

@@ -149,6 +149,16 @@ envdir = {toxworkdir}/docs
 deps = -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -W -b html doc/source doc/build/html
 
+[testenv:pdf-docs]
+basepython = python3
+envdir = {toxworkdir}/docs
+deps = {[testenv:docs]deps}
+whitelist_externals =
+  make
+commands =
+  sphinx-build -W -b latex doc/source doc/build/pdf
+  make -C doc/build/pdf
+
 [testenv:linkcheck]
 basepython = python3
 envdir = {toxworkdir}/docs