How to get type information about running action server? [closed]

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Hi,

Currently, as can be read in this question, there is no simple way to list the action servers. Running rostopic list | grep feedback as suggested, you can see the ones that are running. (every action server broadcasts a goal, results, feedback, status and cancel topic)

When the move group is running, rostopic list | grep feedback will return at least:

/move_group/feedback
/pickup/feedback
/place/feedback

Then you can use rostopic info to find the type of these topics. for instance: rostopic info /move_group/feedback returns:

Type: moveit_msgs/MoveGroupActionFeedback

As a last step you can run rosmsg show moveit_msgs/MoveGroupAction to get the full message definition (rosmsg show moveit_msgs/MoveGroupActionFeedback will only show the feedback part). As it is the completely expanded tree of the message it is quite long and I won't post it here, but you get the idea.

All in all, I find looking at the message definition in the message definition easier, but this will also work.