Nitro24's profile - activity

Hello, i already stated this as a github issue Link, but got kindly redirected to ROS Answers with my issues.

Hello,

While trying to follow the official SROS Tutorials (http://wiki.ros.org/SROS/Tutorials), I had some issues when trying to start the sroskeyserver. The same errors also occur when running the prebuilt Docker container, so i suppose, that the problem is due to some inconsistencies in the SROS repository or its dependencies.

At first i've pulled the docker and tried to run the command from the install page:

docker run --rm -it \
osrf/sros \
bash -c "source /ros_entrypoint.sh && \
    sroskeyserver & \
    sleep 3 && \
    sroslaunch rospy_tutorials talker_listener.launch"

Somehow this runs into the following problem:

Traceback (most recent call last):
  File "/root/sros_catkin_ws/install/bin/sroskeyserver", line 2, in <module>
    import sros
  File "/root/sros_catkin_ws/install/lib/python2.7/dist-packages/sros/__init__.py", line 7, in <module>
    import rosgraph.sros_consts as sros_consts
  ImportError: No module named rosgraph.sros_consts
  Traceback (most recent call last):
  File "/root/sros_catkin_ws/install/bin/sroslaunch", line 2, in <module>
    import sros
  File "/root/sros_catkin_ws/install/lib/python2.7/dist-packages/sros/__init__.py", line 7, in <module>
    import rosgraph.sros_consts as sros_consts
  ImportError: No module named rosgraph.sros_consts

Therefore I checked the ros_comm package, which is not available in the Docker container as it is ignored by using an AMENT_IGNORE file.

./src/ros_comm/ros_comm/AMENT_IGNORE
./src/ros_comm/clients/AMENT_IGNORE
./src/ros_comm/tools/rostopic/AMENT_IGNORE
./src/ros_comm/tools/rosmsg/AMENT_IGNORE
./src/ros_comm/tools/roslaunch/AMENT_IGNORE
./src/ros_comm/tools/rosbag/AMENT_IGNORE
./src/ros_comm/tools/rosparam/AMENT_IGNORE
./src/ros_comm/tools/topic_tools/AMENT_IGNORE
./src/ros_comm/tools/rosnode/AMENT_IGNORE
./src/ros_comm/tools/rosbag_storage/AMENT_IGNORE
./src/ros_comm/tools/rosservice/AMENT_IGNORE
./src/ros_comm/tools/rosout/AMENT_IGNORE
./src/ros_comm/tools/rosconsole/AMENT_IGNORE
./src/ros_comm/tools/rosgraph/AMENT_IGNORE
./src/ros_comm/tools/rosmaster/AMENT_IGNORE
./src/ros_comm/test/AMENT_IGNORE
./src/ros_comm/utilities/AMENT_IGNORE

So I tried to remove the AMENT_IGNORE files, which (after building again) resulted at least in a usable ros_comm installation (i.e. import in python was working), however also resulted in "abandoned packages".

Furthermore i tried again to start the sroskeyserver, but there were some packages missing (cryptography, pyopenssl, apparmor).

After finally installing all of the missing dependencies, i ran into the following error trying to start the keyserver again:

root@5c14d417a2ec:~/sros_catkin_ws# sroskeyserver 
Starting an XML-RPC server to bootstrap SSL key distribution...
Traceback (most recent call last):
  File "/root/sros_catkin_ws/install/bin/sroskeyserver", line 3, in <module>
    sros.sroskeyserver_main()
  File "/root/sros_catkin_ws/install/lib/python2.7/dist-packages/sros/__init__.py", line 179, in sroskeyserver_main
    keyserver.start_keyserver(keyserver_config, keystore_path, keyserver_mode, port)
  File "/root/sros_catkin_ws/install/lib/python2.7/dist-packages/rosgraph/keyserver.py", line 143, in start_keyserver
    keyserver.stop()
UnboundLocalError: local variable 'keyserver' referenced before assignment

So this looks like an more in-depth error for me and since i used the official Docker image, I was wondering if there is already a known solution for this. Is SROS still maintained or should I check out SROS2? Even if SROS is not maintained anymore, I am ... (more)