Support for parameters #202
Description
- Nodes contains parameters Implement node parameters and parameter services #214
- Nodes providing ROS services to interact with the parameters Implement node parameters and parameter services #214
- Parameters can be passed through CLI Take initial parameters from parameters yaml files and constructor arguments. #225
- Parameter events are published on updates. Publish parameter events #226
- Nodes can have a parameters_callback set which can arbitrarily accept and reject setting parameters. Add Node API method for setting the parameters_callback. #228
- System tests for rclpy which exercise the parameters API, events, and services Test parameter behavior for rclpy nodes system_tests#293