event-handlers

Coordinate ROS 2 launch startup order by registering OnProcessStart handlers to trigger dependent nodes automatically once a primary process begins. This event-driven sequencing prevents brittle launch workflows and ensures nodes activate in the correct order.

Automate ROS 2 process cleanup and recovery by applying OnProcessExit handlers to execute restarts, cleanups, or conditional shutdowns based on exit codes. This lifecycle-aware approach ensures resources are released and failures are handled dynamically.

Event-driven orchestration in ROS 2 launch files is a structured approach to react to process lifecycle events dynamically. It uses handlers like OnProcessStart, OnProcessExit, OnProcessIO, and TimerAction to adapt the launched graph at runtime.

Yes, this ROS 2 launch event handling approach applies to both Jazzy and Rolling distributions. It supports ordered startup, lifecycle transitions, and cleanup actions across multiple nodes within these specific ROS 2 project environments.

Adapt the ROS 2 launch graph dynamically at runtime using OpaqueFunction and conditional actions within your launch description. This allows the launched graph to change based on runtime events and process IO.

ROS 2 launch workflows become brittle when reacting to process events due to a lack of structured event handling. Using documented patterns for OnProcessStart and OnProcessExit ensures safe usage, proper ordering, and avoids common launch file pitfalls.