ROS IndexNo version for distro humble. Known supported distros are highlighted in the buttons above.
No version for distro iron. Known supported distros are highlighted in the buttons above.
No version for distro jazzy. Known supported distros are highlighted in the buttons above.
|
service_load_balancing package from service_load_balancing reposervice_load_balancing |
|
|
Package Summary
| Tags | No category tags. |
| Version | 0.1.0 |
| License | Apache-2.0 |
| Build type | AMENT_CMAKE |
| Use | RECOMMENDED |
Repository Summary
| Checkout URI | https://github.com/Barry-Xu-2018/ros2_service_load_balancing.git |
| VCS Type | git |
| VCS Version | main |
| Last Updated | 2024-11-19 |
| Dev Status | DEVELOPED |
| CI status | No Continuous Integration |
| Released | UNRELEASED |
| Tags | No category tags. |
| Contributing |
Help Wanted (0)
Good First Issues (0) Pull Requests to Review (0) |
Package Description
This package helps ROS2 services implement load balancing functionality.
Additional Links
No additional links.
Maintainers
- Barry Xu
- Tomoya Fujita
Authors
- Barry Xu
ros2_service_load_balancing
This package helps ROS2 services implement load balancing functionality.
see overview slide deck for more information.
How to build load balancing service application
In ROS2 environment (such as Jazzy, rolling)
Use rolling as example
$ source /opt/ros/rolling/setup.bash
$ mkdir -p ros2_ws/src && cd ros2_ws/src
$ git clone https://github.com/Barry-Xu-2018/ros2_service_load_balancing.git
$ cd ..
$ colcon build
How to run
Use add_two_ints_server (service server) and add_two_ints_client_async (service client) as an example to introduce how to use load balancing service application
launch service load balancing application
Service load balancing application needs to run first.
$ source /PATH/TO/ros2_ws/install/setup.bash
$ ros2 run service_load_balancing service_load_balancing -s add_two_ints -t example_interfaces/srv/AddTwoInts --strategy less_requests -i 1
The application parameters are introduced as follows
Usage:
/root/ros2_ws/install/service_load_balancing/lib/service_load_balancing/service_load_balancing [-h|--help] [-s|--service-name SERVICE_NAME] [-t|--service-type SERVICE_TYPE] [--strategy XXX] [-i|--interval TIME]
--strategy choose one of "round_robin", "less_requests" and "less_response_time"
If not set, "round_robin" is used as default.
"round_robin": select the service server in order.
"less_requests": select the service server with the fewest requests.
"less_response_time": select the service server with the shortest average response time.
--interval Interval to discovery service servers. Unit is second.
If not set, default is 1s.
After run, you will get the below output
Load balancing service name: /load_balancing/add_two_ints
Service type: example_interfaces/srv/AddTwoInts
Load balancing strategy: less_requests
Interval of server discovery: 1s
------------------------------
Service client remap service name to /load_balancing/add_two_ints
Service server remap service name to /load_balancing/add_two_ints/XXX
------------------------------
launch service server
The service server can refer to the above hint in log output to remap the service name for using the load balancing service.
Assume we start with 2 service servers. Of course, you can add service servers at any time.
In a new terminal,
$ source /opt/ros/rolling/setup.bash
$ ros2 run demo_nodes_cpp add_two_ints_server --ros-args -r add_two_ints:=load_balancing/add_two_ints/s1
In another new terminal,
$ source /opt/ros/rolling/setup.bash
$ ros2 run demo_nodes_cpp add_two_ints_server --ros-args -r add_two_ints:=load_balancing/add_two_ints/s2
Note that you must use different name under load_balancing/add_two_ints/.
launch service client
We can run any number of service clients to connect to the service.
$ source /opt/ros/rolling/setup.bash
$ ros2 run demo_nodes_cpp add_two_ints_client_async --ros-args -r add_two_ints:=load_balancing/add_two_ints
CHANGELOG
No CHANGELOG found.
Wiki Tutorials
This package does not provide any links to tutorials in it's rosindex metadata.
You can check on the ROS Wiki Tutorials page for the package.
Package Dependencies
| Deps | Name |
|---|---|
| rclcpp | |
| std_msgs | |
| rosidl_typesupport_introspection_cpp | |
| ament_cmake | |
| rosidl_default_runtime | |
| std_srvs | |
| example_interfaces |
System Dependencies
No direct system dependencies.
Dependant Packages
No known dependants.
Launch files
No launch files found
Messages
No message files found.
Services
No service files found
Plugins
No plugins found.
Recent questions tagged service_load_balancing at Robotics Stack Exchange
No version for distro noetic. Known supported distros are highlighted in the buttons above.
No version for distro ardent. Known supported distros are highlighted in the buttons above.
No version for distro bouncy. Known supported distros are highlighted in the buttons above.
No version for distro crystal. Known supported distros are highlighted in the buttons above.
No version for distro eloquent. Known supported distros are highlighted in the buttons above.
No version for distro dashing. Known supported distros are highlighted in the buttons above.
No version for distro galactic. Known supported distros are highlighted in the buttons above.
No version for distro foxy. Known supported distros are highlighted in the buttons above.
No version for distro lunar. Known supported distros are highlighted in the buttons above.
No version for distro jade. Known supported distros are highlighted in the buttons above.
No version for distro indigo. Known supported distros are highlighted in the buttons above.
No version for distro hydro. Known supported distros are highlighted in the buttons above.
No version for distro kinetic. Known supported distros are highlighted in the buttons above.
No version for distro melodic. Known supported distros are highlighted in the buttons above.