example_move_base.py

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#! /usr/bin/env python
 
"""
This action server node will wait for 3 MoveBaseGoals and handle each differently:
- succeed the first one
- abort the 2nd goal
- just ignore the 3rd one
"""
 
import rospy
 
from scenario_test_tools.scriptable_move_base import ScriptableMoveBase
 
from move_base_msgs.msg import MoveBaseAction, MoveBaseResult
 
 
if __name__ == "__main__":
    rospy.init_node('move_base_fake')
 
    succeeded = MoveBaseResult()
 
    # By default, wait 5 secs for the robot to arrive
    result_delay = rospy.get_param("~result_delay", 5)
    # By default, wait forever for a move_base goal
    timeout = rospy.get_param("~timeout", None)
    # By default, publish transformation /map to /base_link
    pub_transform = rospy.get_param("~pub_transform", True)
 
    move_base = ScriptableMoveBase(rospy.get_name(), MoveBaseAction, default_result_delay=result_delay, pub_transform=pub_transform)
    move_base.start()
    rospy.loginfo("fake move base running")
 
 
    try:
        move_base.reply(succeeded, marker='1: succeeded', timeout=timeout)
 
        # The action server will abort the goal,
        # to check that the client will perhaps retry the navigation or otherwise handle an abort
        move_base.reply(move_base.ABORT_GOAL, marker='2: Aborted', reply_delay=0, timeout=timeout)
 
        # The action server will ignore the goal and never send a result.
        # The client will have to decide it's taking too long and cancel
        move_base.reply(move_base.IGNORE_GOAL, marker='3: Ignored', reply_delay=0, timeout=timeout)
    except AssertionError as assertion_err:
        rospy.logerr(assertion_err)
        raise assertion_err
    rospy.spin()