diia-engine-documentation

Developing and maintaining technical product documentation

Description of tools

The development of documentation is conducted using the following tools:

• AsciiDoc - A markup language supporting structural and semantic elements for creating text documents.
• PlantUml - An open-source tool for describing UML diagrams and visualizing JSON and YAML in text form.
• Draw.IO - An online tool for creating various types of diagrams, with the ability to save in SVG format.

For structuring text AsciiDoc documents and creating a unified static HTML site, Antora is used, based on .yml playbook configurations.

Official documentation of tools

• AsciiDoc Documentation
• AsciiDoc Technical Writer’s Guide
• Antora Documentation

Local environment for developing technical documentation

Necessary tools for development:

• IntelliJ IDEA / JetBrains WebStorm: An integrated development environment.
• AsciiDoc JetBrains Plugin: A plugin for AsciiDoc syntax support.
• PlantUML Integration: For developing diagrams with PlantUML syntax.
• Asciidoctor.js Live Preview: A Chrome extension for viewing AsciiDoc documents through a web browser.

Viewing technical documentation through IntelliJ IDEA

IntelliJ IDEA provides several ways for local viewing of technical documentation. Here’s how you can utilize these options:

Using the built-in AsciiDoc toolbar

You can use the built-in toolbar above the documentation development window in an open AsciiDoc (.adoc) file. Here, you will find options for real-time documentation preview mode:

1. Show Editor and Preview:

   • This option lets you see both the code editor and the preview window simultaneously.
   • You can edit the documentation in the editor and immediately see the results of these changes in the preview window.
   • This is useful for quickly verifying changes, ensuring an efficient editing process.

2. Show Preview Only:

   • This mode provides only the preview window without the code editor.
   • It’s ideal for focusing on the final appearance of the documentation, especially when you need to check the overall format and layout of elements.
   • You can easily switch to Show Editor and Preview mode if you need to make changes.

Viewing options in the top right corner of the development window

You can also use the viewing options located in the top right corner of the development window:

1. Built-In Preview:

   • Opens the built-in preview window directly in the IntelliJ IDEA development environment.
   • This is convenient for quick viewing and editing.

2. View in external browser:

   • Chrome: If Chrome is installed, select this option to open a tab with the documentation in the browser.
   • Firefox: Similarly, select Firefox for viewing in this browser.
   • Edge: If you use Edge, choose this option.

💡 TIP: You can also open the desired viewing option by pressing the key combination Alt+F2 > Preview File in....

These IntelliJ IDEA features allow flexible work with technical documentation, providing various viewing options to meet the needs of developers and technical writers.

Building Antora in a local environment

You can build the overall structure of the documentation using Antora in a local environment.

Installing Antora

📝 NOTE: Complete installation instructions for Antora can be found at this link.

1. Check if Antora is installed:

   antora -v
   

2. Install Node.

   To check if Node is installed and its version, execute the following command:

   node --version
   

Installing Node on Linux

• Install Node on Linux using the command:

  nvm install --lts
  

• See detailed instructions at this link.

  💡 TIP: Linux users are invited to share their comments and supplement important information missing in this brief guide or the complete documentation.

Installing Node on macOS

• Install Node on macOS using the command:

  nvm install --lts
  

• View detailed instructions at this link.

  💡 TIP: macOS users are invited to share their comments and supplement important information missing in this brief guide or the complete documentation.

Installing Node on Windows

For installing Node on Windows, follow these steps:

1. Install Chocolatey:

   • Open PowerShell as an administrator.

   • Execute the command:

     Set-ExecutionPolicy Bypass -Scope Process -Force; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
     

2. Install nvm:

   • Use the same PowerShell window as an administrator.

   • Execute the command:

     choco install -y nvm
     

3. Install Node:

   • Open a new PowerShell window.

   • Execute the command:

     nvm install 16.20.2
     

   🔑 IMPORTANT: Specify the exact version of Node for Windows (e.g., 16.20.2) if you encounter an issue nvm-windows#214.

   📝 NOTE: If Node is not installed after running the nvm install command, try installing Node through Chocolatey using the command:

   choco install nodejs-lts
   

   or

   choco install nodejs
   

   💡 TIP: Detailed instructions can be found at this link.

   Windows users are invited to share their comments and supplement important information missing in this brief guide or the complete documentation.

Installing Antora globally using npm

1. You can install Antora globally so that the antora command is available on your PATH. To install Antora globally, pass the -g option to npm i.

   npm i -g @antora/[email protected] @antora/[email protected]
   

2. Verify the antora command is available on your PATH by running:

   antora -v
   

3. If the installation was successful, the command should report the version of the Antora CLI and site generator.

   antora -v
   @antora/cli: 3.1.5
   @antora/site-generator: 3.1.5
   

💡 TIP: See also: Installing Antora Locally.

Granting access for Antora to remote Git repositories

📝 NOTE: Complete instructions for accessing private repositories can be found at this link.

Populating the credential store interactively

To grant Antora access to your source repositories, follow these steps:

1. Open a terminal and execute the command to configure Git:

   git config --global credential.helper store && \
   echo -n 'Repository URL: ' && read REPLY && \
   git ls-remote -h $REPLY > /dev/null
   

   📝 NOTE: For 'Repository URL: ', enter the URL of the Git repository to which you need to grant access.

2. Repeat these steps for each repository from your Antora playbook. In our example, it’s the site.yml file.)

Populating the credential store directly (GitLab example)

Use personal access tokens to grant access to repositories:

1. In your GitLab account, open GitLab personal access token and create a token with read_repository scope.

2. To grant access to repositories, use one of the following methods:

   • Through the GIT_CREDENTIALS environment variable: Set the environment variable with the value of the personal access token. For example:

     export GIT_CREDENTIALS='https://<FirstName_LastName>:<personalAccessToken>@gitlab.example.com'
     

     Antora will use this token for all repositories in gitlab.example.com.

• Through the $HOME/.git_credentials file: Create or modify the .git_credentials file. Add lines with the necessary repositories in the following format:

  https://<personalAccessToken>:@gitlab.example.com/<repository_path>
  # or
  https://<FirstName_LastName>:<personalAccessToken>@gitlab.example.com/<repository_path>
  # or use a single token for all repositories
  https://<FirstName_LastName>:<personalAccessToken>gitlab.example.com/
  

Generating technical documentation

• Generate a static HTML site from the documentation using the command:

  antora site.yml
  

• Generate a static LOCAL HTML site from the documentation using the command:

  antora site-local.yml
  

  The generated site can be viewed locally through the default browser. The output of this site will be available at the path defined in your site.yml playbook:

  output:
    dir: ./output/ua
  

Setting up quick launch for documentation generation process in IntelliJ IDEA

To automate the documentation generation step, you can set up a Shell Script run configuration in IntelliJ IDEA:

1. From the main menu, select: Run > Edit Configurations > Add New Configuration.
2. Choose the Shell Script run configuration type.
3. Specify the name Name: antora-site.
4. Specify the script type Execute: Shell Script.
5. Specify the script Script text: antora site-local.yml.

After setting up, IntelliJ IDEA will have an additional run configuration antora-site for generating technical documentation through Antora, which can be used for the quick launch of the process.