A ROS2 RMW implementation for Eclipse Cyclone DDS
Getting, building and using it
All it takes to get Cyclone DDS support into ROS2 is to clone this repository into the ROS2 workspace source directory, and then run colcon build in the usual manner:
cd ros2_ws/src git clone https://github.com/ros2/rmw_cyclonedds git clone https://github.com/eclipse-cyclonedds/cyclonedds cd .. rosdep install --from src -i colcon build export RMW_IMPLEMENTATION=rmw_cyclonedds_cpp
This seems to work fine on Linux with a binary ROS2 installation as well as when building ROS2 from source. On macOS it has only been tested in a source build on a machine in an "unsupported" configuration (macOS 10.14 with SIP enabled, instead of 10.12 with SIP disabled), and apart from a few details that are caused by the machine configuration, that works fine, too. There is no reason why it wouldn't work the same on Windows, but I haven't tried.
If you want to use a pre-existing installation of Cyclone DDS, you don't need to clone it, but you
may have to tell CMake where to look for it using the
CycloneDDS_DIR variable. That also appears
to be the case if there are other packages in the ROS2 workspace that you would like to use Cyclone
DDS directly instead of via the ROS2 abstraction.
Cyclone DDS doesn't yet implement the DDS Security standard, nor does it fully implement the Lifespan, Deadline and some of the Liveliness QoS modes. Consequently these features of ROS2 are also not yet supported when using Cyclone DDS.
Any contribution that you make to this repository will be under the Apache 2 License, as dictated by that license:
5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.