diff --git a/ros_bt_py/ros_bt_py/ros_nodes/__init__.py b/ros_bt_py/ros_bt_py/ros_nodes/__init__.py index 08c659e..8ceffb3 100644 --- a/ros_bt_py/ros_bt_py/ros_nodes/__init__.py +++ b/ros_bt_py/ros_bt_py/ros_nodes/__init__.py @@ -34,4 +34,5 @@ from . import param from . import subtree from . import throttle +from . import time from . import topic diff --git a/ros_bt_py/ros_bt_py/ros_nodes/time.py b/ros_bt_py/ros_bt_py/ros_nodes/time.py new file mode 100644 index 0000000..37f09d4 --- /dev/null +++ b/ros_bt_py/ros_bt_py/ros_nodes/time.py @@ -0,0 +1,62 @@ +# Copyright 2023 FZI Forschungszentrum Informatik +# +# 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 FZI Forschungszentrum Informatik 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 HOLDER 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. +from ros_bt_py_interfaces.msg import Node as NodeMsg +from builtin_interfaces.msg import Time + +from ros_bt_py.node import define_bt_node, Leaf +from ros_bt_py.node_config import NodeConfig + + +@define_bt_node( + NodeConfig( + version="0.1.0", + options={}, + inputs={}, + outputs={"current_time": Time}, + max_children=0, + ) +) +class GetTimeNow(Leaf): + """Output current time stamp.""" + + def _do_setup(self): + pass + + def _do_tick(self): + current_time = self.ros_node.get_clock().now() + self.outputs["current_time"] = current_time.to_msg() + return NodeMsg.SUCCEEDED + + def _do_shutdown(self): + pass + + def _do_reset(self): + return NodeMsg.IDLE + + def _do_untick(self): + return NodeMsg.IDLE