.. This work is licensed under a Creative Commons Attribution 4.0 International License. Setting Up ========== Some initial set up is required to connect a project with the master document structure and enable automated publishing of changes as summarized in the following diagram and description below below. .. seqdiag:: :height: 700 :width: 1000 seqdiag { RD [label = "Read The Docs", color =lightgreen ]; DA [label = "Doc Project\nAuthor/Committer", color=lightblue]; DR [label = "Doc Gerrit Repo" , color=pink]; PR [label = "Other Project\nGerrit Repo", color=pink ]; PA [label = "Other Project\nAuthor/Committer", color=lightblue]; === One time setup doc project only === RD -> DA [label = "Acquire Account" ]; DA -> DR [label = "Create initial\n doc repository content"]; DA <<-- DR [label = "Merge" ]; RD <-- DA [label = "Connect gerrit.onap.org" ]; === For each project repository containing document source === PA -> DR [label = "Add project repo as\ngit submodule" ]; DR -> DA [label = "Review & Plan to\nIntegrate Content with\nTocTree Structure" ]; DR <-- DA [label = "Vote +2/Merge" ]; PA <-- DR [label = "Merge Notification" ]; PA -> PR [label = "Create in project repo\ntop level directory and index.rst" ]; PR -> DA [label = "Add as Reviewer" ]; PR <-- DA [label = "Approve and Integrate" ]; PA <-- PR [label = "Merge" ]; } Setup doc project ----------------- These steps are performed only once for the doc project and include: (1) creating in the doc repository an initial: - sphinx master document index - a directory structure aligned with the document structure - tests performed in jenkins verify jobs - sphinx configuration (2) establishing an account at readthedocs connected with the doc doc project repo in gerrit.onap.org. Setup project repositories(s) ----------------------------- These steps are performed for each project repository that provides documentation. First let's set two variables that will be used in the subsequent steps. Set reponame to the project repository you are setting up just as it appears in the **Project Name** column of the Gerrit projects page. Set lfid to your Linux Foundation identity that you use to login to gerrit or for git clone requests over ssh. .. code-block:: bash reponame= lfid= The next step is to add a directory in the doc project where your project will be included as a submodule and at least one reference from the doc project to the documentation index in your repository. The following sequence will do this over ssh. .. caution:: If your access network restricts ssh, you will need to use equivalent git commands and HTTP Passwords as described `here `_. .. code-block:: bash git clone ssh://$lfid@gerrit.onap.org:29418/doc cd doc mkdir -p `dirname docs/submodules/$reponame` git submodule add ../$reponame docs/submodules/$reponame.git git submodule init docs/submodules/$reponame.git git submodule update docs/submodules/$reponame.git echo " $reponame <../submodules/$reponame.git/docs/index>" >> docs/release/repolist.rst git add . git commit -s git review .. caution:: Wait for the above change to be merged before any merge to the project repository that you have just added as a submodule. If the project repository added as submodule changes before the doc project merge, git may not automatically update the submodule reference on changes and/or the verify job will fail in the step below. The last step is to create a docs directory in your repository with an index.rst file. The following sequence will complete the minimum required over ssh. As you have time to convert or add new content you can update the index and add files under the docs folder. .. hint:: If you have additional content, you can include it by editing the index.rst file and/or adding other files before the git commit. See `Templates and Examples`_ below and :ref:`converting-to-rst` for more information. .. code-block:: bash git clone ssh://$lfid@gerrit.onap.org:29418/$reponame cd $reponame mkdir docs echo ".. This work is licensed under a Creative Commons Attribution 4.0 International License. TODO Add files to toctree and delete this header ------------------------------------------------ .. toctree:: :maxdepth: 1 " > docs/index.rst git add . git commit -s git review The diagram below illustrates what is accomplished in the setup steps above from the perspective of a file structure created for a local test, a jenkins verify job, and/or published release documentation including: - ONAP gerrit project repositories, - doc project repository master document index.rst, templates, configuration, and other documents - submodules directory where other project repositories and directories/files are referenced - file structure: directories (ellipses), files(boxes) - references: directory/files (solid edges), git submodule (dotted edges), sphinx toctree (dashed edges) .. graphviz:: digraph docstructure { size="8,12"; node [fontname = "helvetica"]; // Align gerrit repos and docs directories {rank=same doc aaf aai reponame repoelipse vnfsdk vvp} {rank=same confpy release templates masterindex submodules otherdocdocumentelipse} {rank=same releasedocumentindex releaserepolist} //Illustrate Gerrit Repos and provide URL/Link for complete repo list gerrit [label="gerrit.onap.org/r", href="https://gerrit.onap.org/r/#/admin/projects/" ]; doc [href="https://gerrit.onap.org/r/gitweb?p=doc.git;a=tree"]; gerrit -> doc; gerrit -> aaf; gerrit -> aai; gerrit -> reponame; gerrit -> repoelipse; repoelipse [label=". . . ."]; gerrit -> vnfsdk; gerrit -> vvp; //Show example of local reponame instance of component info reponame -> reponamedocsdir; reponamesm -> reponamedocsdir; reponamedocsdir [label="docs"]; reponamedocsdir -> repnamedocsdirindex; repnamedocsdirindex [label="index.rst", shape=box]; //Show detail structure of a portion of doc/docs doc -> docs; docs -> confpy; confpy [label="conf.py",shape=box]; docs -> masterindex; masterindex [label="Master\nindex.rst", shape=box]; docs -> release; docs -> templates; docs -> otherdocdocumentelipse; otherdocdocumentelipse [label="...other\ndocuments"]; docs -> submodules masterindex -> releasedocumentindex [style=dashed, label="sphinx\ntoctree\nreference"]; //Show submodule linkage to docs directory submodules -> reponamesm [style=dotted,label="git\nsubmodule\nreference"]; reponamesm [label="reponame.git"]; //Example Release document index that references component info provided in other project repo release -> releasedocumentindex; releasedocumentindex [label="index.rst", shape=box]; releasedocumentindex -> releaserepolist [style=dashed, label="sphinx\ntoctree\nreference"]; releaserepolist [label="repolist.rst", shape=box]; release -> releaserepolist; releaserepolist -> repnamedocsdirindex [style=dashed, label="sphinx\ntoctree\nreference"]; } About GIT branches ------------------ GIT is a powerful tool allowing many actions, but without respecting some rules the GIT structure can be quickly ugly and unmaintaible. Here are some conventions about GIT branches: - ALWAYS create a local branch to edit or create any file. This local branch will be considered as a topic in Gerrit and allow contributors to work at the same time on the same project. - 1 feature = 1 branch. In the case of documentation, a new chapter or page about a new code feature can be considered as a 'doc feature' - 1 bug = 1 branch. In the case of documentation, a correction on an existing sentence can be considered as a 'doc bug' - the master branch is considered as "unstable", containing new features that will converge to a stable situation for the release date. The day of the release, the repository owner will create a new branch to fix the code and documentation. This will represent the 'stable' code of the release. In this context: - NEVER push a new feature on a stable branch - Only bug correction are authorized on a stable branch using cherry pick method .. image:: git_branches.png Creating Restructured Text ========================== Templates and Examples ---------------------- Templates are available that capture the kinds of information useful for different types of projects and provide some examples of restructured text. We organize templates in the following way to: help authors understand relationships between documents; keep the user audience context in mind when writing; and tailor sections for different kinds of projects. **Sections** Represent a certain type of content. A section is **provided** in a repository, to to describe something about the characteristics, use, capability, etc. of things in that repository. A section may also be **referenced** from other sections and in other repositories. The notes in the beginning of each section template provide additional detail about what is typically covered and where there may be references to the section. **Collections** Are a set of sections that are typically provided for a particular type of project, repository, guide, reference manual, etc. You can: browse the template *collections* and *sections* below; show source to look at the Restructured Text and Sphinx directives used; copy the source either from a browser window or by downloading the file in raw form from the `gerrit doc repository `_ and then add them to your repository docs folder and index.rst. Sections ++++++++ .. toctree:: :maxdepth: 1 :glob: ../../../templates/sections/* Collections +++++++++++ .. toctree:: :maxdepth: 1 :glob: ../../../templates/collections/* In addition to these simple templates and examples there are many open source projects (e.g. Open Daylight, Open Stack) that are using Sphinx and Readthedocs where you may find examples to start with. Working with project teams we will continue to enhance templates here and capture frequently asked questions on the developer wiki question topic `documentation `_. Each project should: decide what is relevant content; determine the best way to create/maintain it in a CI/CD process; and work with the documentation team to reference content from the master index and guides. Consider options including filling in a template, identifying existing content that can be used as is or easily converted, and use of Sphinx directives/extensions to automatically generate restructured text from other source you already have. Links and References -------------------- It's pretty common to want to reference another location in the ONAP documentation and it's pretty easy to do with reStructuredText. This is a quick primer, more information is in the `Sphinx section on Cross-referencing arbitrary locations `_. Within a single document, you can reference another section simply by:: This is a reference to `The title of a section`_ Assuming that somewhere else in the same file there a is a section title something like:: The title of a section ^^^^^^^^^^^^^^^^^^^^^^ It's typically better to use ``:ref:`` syntax and labels to provide links as they work across files and are resilient to sections being renamed. First, you need to create a label something like:: .. _a-label: The title of a section ^^^^^^^^^^^^^^^^^^^^^^ .. note:: The underscore (_) before the label is required. Then you can reference the section anywhere by simply doing:: This is a reference to :ref:`a-label` or:: This is a reference to :ref:`a section I really liked ` .. note:: When using ``:ref:``-style links, you don't need a trailing underscore (_). Because the labels have to be unique, it usually makes sense to prefix the labels with the project name to help share the label space, e.g., ``sfc-user-guide`` instead of just ``user-guide``. Testing ======= One RST File ------------ It is recommended that all rst content is validated by `doc8 `_ standards. To validate your rst files using doc8, install doc8. .. code-block:: bash sudo pip install doc8 doc8 can now be used to check the rst files. Execute as, .. code-block:: bash doc8 --ignore D000,D001 One Project ----------- To test how the documentation renders in HTML, follow these steps: Install virtual environment. .. code-block:: bash sudo pip install virtualenv cd /local/repo/path/to/project Download the doc repository. .. code-block:: bash git clone http://gerrit.onap.org/r/doc Change directory to doc & install requirements. .. code-block:: bash cd doc sudo pip install -r etc/requirements.txt Move the conf.py file to your project folder where RST files have been kept: .. code-block:: bash mv doc/docs/conf.py / Move the static files to your project folder: .. code-block:: bash mv docs/_static/ / Build the documentation from within your project folder: .. code-block:: bash sphinx-build -b html Your documentation shall be built as HTML inside the specified output folder directory. .. note:: Be sure to remove the `conf.py`, the static/ files and the output folder from the `/docs/`. This is for testing only. Only commit the rst files and related content. .. _building-all-documentation: All Documentation ----------------- To build the whole documentation under doc/, follow these steps: Install virtual environment. .. code-block:: bash sudo pip install virtualenv cd /local/repo/path/to/project Download the DOC repository. .. code-block:: bash git clone http://gerrit.onap.org/r/doc Update submodules, build documentation using tox & then open using any browser. .. code-block:: bash cd doc tox -elocal firefox docs/_build/html/index.html .. note:: Make sure to run `tox -elocal` and not just `tox`.