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#! /usr/bin/env python
# Copyright (c) 2009, Willow Garage, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the Willow Garage, Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
import time
import rospy
from actionlib.simple_action_server import SimpleActionServer
from actionlib.server_goal_handle import ServerGoalHandle
from actionlib.msg import TestRequestAction, TestRequestGoal, TestRequestResult
class RefSimpleServer(SimpleActionServer):
def __init__(self, name):
SimpleActionServer.__init__(self, name, TestRequestAction, self.execute_cb, False)
self.start()
def execute_cb(self, goal):
rospy.logdebug("Goal:\n" + str(goal))
result = TestRequestResult(goal.the_result, True)
if goal.pause_status > rospy.Duration(0.0):
rospy.loginfo("Locking the action server for %.3f seconds" % goal.pause_status.to_sec())
status_continue_time = rospy.get_rostime() + goal.pause_status
# Takes the action server lock to prevent status from
# being published (simulates a freeze).
with self.action_server.lock:
while rospy.get_rostime() < status_continue_time:
time.sleep(0.02)
rospy.loginfo("Unlocking the action server")
terminate_time = rospy.get_rostime() + goal.delay_terminate
while rospy.get_rostime() < terminate_time:
time.sleep(0.02)
if not goal.ignore_cancel:
if self.is_preempt_requested():
self.set_preempted(result, goal.result_text)
return
rospy.logdebug("Terminating goal as: %i" % goal.terminate_status)
if goal.terminate_status == TestRequestGoal.TERMINATE_SUCCESS:
self.set_succeeded(result, goal.result_text)
elif goal.terminate_status == TestRequestGoal.TERMINATE_ABORTED:
self.set_aborted(result, goal.result_text)
elif goal.terminate_status == TestRequestGoal.TERMINATE_REJECTED:
rospy.logerr("Simple action server cannot reject goals")
self.set_aborted(None, "Simple action server cannot reject goals")
elif goal.terminate_status == TestRequestGoal.TERMINATE_DROP:
rospy.loginfo("About to drop the goal. This should produce an error message.")
return
elif goal.terminate_status == TestRequestGoal.TERMINATE_EXCEPTION:
rospy.loginfo("About to throw an exception. This should produce an error message.")
raise Exception("Terminating by throwing an exception")
elif goal.terminate_status == TestRequestGoal.TERMINATE_LOSE:
# Losing the goal requires messing about in the action server's innards
for i, s in enumerate(self.action_server.status_list):
if s.status.goal_id.id == self.current_goal.goal.goal_id.id:
del self.action_server.status_list[i]
break
self.current_goal = ServerGoalHandle()
else:
rospy.logerr("Don't know how to terminate as %d" % goal.terminate_status)
self.set_aborted(None, "Don't know how to terminate as %d" % goal.terminate_status)
if __name__ == '__main__':
rospy.init_node("ref_simple_server")
ref_server = RefSimpleServer("test_request_action")
print("Spinning")
rospy.spin()
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