ros_d2

Exports ROS2 nodes (publishers, subcribers and services) into a D2 file so they can be visualised and serialised for later use.

Features

• Export runtime ROS2 system architecture (nodes, services, topics, clients) to .d2 (using ros2cli)
• Powerful visualisation and theming provided by D2
• Simple serialisable diagram format
• Ros node descriptions pulled from the package.xml
• Topic QOS descriptions
• Action servers / clients?
• Topic Types (--verbose flag)
• Advanced theming
• Pytest helpers that ensure your ROS2 System architecture matches that of your .d2 diagram
• Better testing on this repo!
• ros_d2 export-launch-files command that will export a .d2 file for each of your launch files
• ros_d2 render command that will render all .d2 files in the current directory

Examples

Simple

More complex applications

Installation

pip install ros-d2
ros_d2 export --help # prints help
# If you get an error about "No module named 'ros2cli'" - ros has not been sourced!

Requirements

• ROS2 + Colcon
• D2

Usage

Exporting a diagram

1. Launch your ROS2 system
2. Source ROS
3. Use ros_d2 to export your runtime ros system to a .d2 file

  ros_d2 export ros-diagram.d2
  

1. Render your diagram using d2.

  ros_d2 render # to render ALL .d2 files in the current directory
  # or...
  d2 --layout dagre ros-diagram.d2 # to use d2 directly
  

Exporting diagrams for all launch files

If you want to create a .d2 and .svg alongside each of your ros2 .launch.py files. You can use the following script:

  # Source ros: eg) `source /opt/ros/humble/setup.bash`
  # Build your ros2 workspace: eg) `colcon build`
  # Source your ros2 workspace: eg) `source install/setup.bash`
  ros_d2 export-launch-files
  ros_d2 render
  

Development

Prerequisite

• Python 3.7+
• pre-commit

Installation

following the steps below to setup the project:

```bash
# Clone the repository
git clone git@github.com:Greenroom-Robotics/ros-d2.git && cd ros-d2

# Install all dependencies
pip install -e ./src/ros_d2

Example usage

From the root of this repo:

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