Prefix cmd's name becomes the name of the launch output logger #938
Description
Generated by Generative AI
No response
Operating System:
Linux
ROS version or commit hash:
jazzy
RMW implementation (if applicable):
Default. I assume FastDDS?
RMW Configuration (if applicable):
Nothing
Client library (if applicable):
irrelevant
'ros2 doctor --report' output
ros2 doctor --report
NETWORK CONFIGURATION
inet : 127.0.0.1
inet4 : ['127.0.0.1']
inet6 : ['::1']
netmask : 255.0.0.0
device : lo
flags : 73<UP,LOOPBACK,RUNNING>
mtu : 65536
inet : 192.168.1.30
inet4 : ['192.168.1.30']
ether : c8:4b:d6:be:e6:93
inet6 : ['fe80::792f:bcf9:248f:a5f4%enxc84bd6bee693']
netmask : 255.255.255.0
device : enxc84bd6bee693
flags : 4163<UP,BROADCAST,MULTICAST,RUNNING>
mtu : 1500
broadcast : 192.168.1.255
inet : 192.168.122.1
inet4 : ['192.168.122.1']
ether : 52:54:00:bb:55:0d
netmask : 255.255.255.0
device : virbr0
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 192.168.122.255
inet : 100.116.48.17
inet4 : ['100.116.48.17']
inet6 : ['fd7a:115c:a1e0::b201:3015', 'fe80::c153:270:988f:b157%tailscale0']
netmask : 255.255.255.255
device : tailscale0
flags : 4305<NOARP,UP,PTP,RUNNING,MULTICAST>
mtu : 1280
inet : 192.168.1.239
inet4 : ['192.168.1.239']
ether : 04:7b:cb:c1:83:0e
inet6 : ['fe80::51a1:5761:e430:d00f%wlp1s0']
netmask : 255.255.255.0
device : wlp1s0
flags : 4163<UP,BROADCAST,MULTICAST,RUNNING>
mtu : 1500
broadcast : 192.168.1.255
inet : 172.21.0.1
inet4 : ['172.21.0.1']
ether : ae:5b:8f:4e:40:30
netmask : 255.255.0.0
device : br-c65c679998bf
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.21.255.255
inet : 192.168.56.1
inet4 : ['192.168.56.1']
ether : 92:b9:44:44:0e:cc
netmask : 255.255.255.0
device : br-f2cb5252c6c8
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 192.168.56.255
inet : 172.24.0.1
inet4 : ['172.24.0.1']
ether : b6:f2:70:f3:f5:35
netmask : 255.255.0.0
device : br-02f583edb822
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.24.255.255
inet : 172.20.0.1
inet4 : ['172.20.0.1']
ether : be:c0:96:f0:93:29
netmask : 255.255.0.0
device : br-1c135950f1db
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.20.255.255
inet : 172.18.0.1
inet4 : ['172.18.0.1']
ether : 2e:2c:ad:51:b7:79
netmask : 255.255.0.0
device : br-1d8a73cef68b
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.18.255.255
inet : 172.17.0.1
inet4 : ['172.17.0.1']
ether : d6:bd:4b:7a:70:af
netmask : 255.255.0.0
device : docker0
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.17.255.255
inet : 172.25.0.1
inet4 : ['172.25.0.1']
ether : 1a:0b:4a:7d:89:6d
netmask : 255.255.0.0
device : br-723b77ff3c52
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.25.255.255
inet : 172.23.0.1
inet4 : ['172.23.0.1']
ether : 56:97:e8:ec:c3:8d
netmask : 255.255.0.0
device : br-a1ab01223af6
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.23.255.255
inet : 172.22.0.1
inet4 : ['172.22.0.1']
ether : aa:dd:4b:45:d0:0f
netmask : 255.255.0.0
device : br-a5fe8a03e60f
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.22.255.255
inet : 172.19.0.1
inet4 : ['172.19.0.1']
ether : 3e:c7:f8:e1:64:83
netmask : 255.255.0.0
device : br-b528c16831e0
flags : 4099<UP,BROADCAST,MULTICAST>
mtu : 1500
broadcast : 172.19.255.255
ether : 16:61:ef:18:68:21
device : wwan0
flags : 4226<NOARP,BROADCAST,MULTICAST>
mtu : 1500
PACKAGE VERSIONS
some_example : latest=N/A, local=0.0.0
ament_cmake_gmock : latest=2.5.5, local=2.5.3
rclpy : latest=7.1.8, local=7.1.3
ament_cmake_pep257 : latest=0.17.3, local=0.17.1
rosidl_typesupport_c : latest=3.2.2, local=3.2.2
ament_cpplint : latest=0.17.3, local=0.17.1
ament_flake8 : latest=0.17.3, local=0.17.1
rosidl_core_runtime : latest=0.2.0, local=0.2.0
examples_rclcpp_minimal_publisher : latest=0.19.7, local=0.19.4
ament_clang_format : latest=0.17.3, local=0.17.1
lifecycle_msgs : latest=2.0.3, local=2.0.2
ament_lint : latest=0.17.3, local=0.17.1
spdlog_vendor : latest=1.6.1, local=1.6.1
ament_cmake_export_libraries : latest=2.5.5, local=2.5.3
rosidl_adapter : latest=4.6.7, local=4.6.5
python_cmake_module : latest=0.11.1, local=0.11.1
rclcpp_action : latest=28.1.15, local=28.1.6
ament_xmllint : latest=0.17.3, local=0.17.1
ament_cmake_lint_cmake : latest=0.17.3, local=0.17.1
rosidl_generator_type_description : latest=4.6.7, local=4.6.5
launch_testing : latest=3.4.10, local=3.4.3
ament_cmake_python : latest=2.5.5, local=2.5.3
rcl_lifecycle : latest=9.2.8, local=9.2.4
sros2 : latest=0.13.5, local=0.13.2
ament_pep257 : latest=0.17.3, local=0.17.1
rpyutils : latest=0.4.2, local=0.4.1
rclcpp_components : latest=28.1.15, local=28.1.6
rosidl_generator_cpp : latest=4.6.7, local=4.6.5
rosgraph_msgs : latest=2.0.3, local=2.0.2
stereo_msgs : latest=5.3.6, local=5.3.5
rosidl_cmake : latest=4.6.7, local=4.6.5
rosidl_default_generators : latest=1.6.0, local=1.6.0
action_msgs : latest=2.0.3, local=2.0.2
ros2multicast : latest=0.32.7, local=0.32.2
ament_cmake_target_dependencies : latest=2.5.5, local=2.5.3
ament_cmake_pytest : latest=2.5.5, local=2.5.3
rcutils : latest=6.7.5, local=6.7.2
rosidl_runtime_py : latest=0.13.1, local=0.13.1
class_loader : latest=2.7.0, local=2.7.0
ament_cmake_uncrustify : latest=0.17.3, local=0.17.1
rosidl_cli : latest=4.6.7, local=4.6.5
ros_environment : latest=4.2.1, local=4.2.1
ros2action : latest=0.32.7, local=0.32.2
rosidl_runtime_c : latest=4.6.7, local=4.6.5
trajectory_msgs : latest=5.3.6, local=5.3.5
pluginlib : latest=5.4.4, local=5.4.2
rmw_fastrtps_shared_cpp : latest=8.4.3, local=8.4.1
fastrtps_cmake_module : latest=3.6.3, local=3.6.1
launch_yaml : latest=3.4.10, local=3.4.3
type_description_interfaces : latest=2.0.3, local=2.0.2
sros2_cmake : latest=0.13.5, local=0.13.2
ament_cmake_export_dependencies : latest=2.5.5, local=2.5.3
rosidl_typesupport_fastrtps_c : latest=3.6.3, local=3.6.1
osrf_pycommon : latest=2.1.7, local=2.1.5
ros2node : latest=0.32.7, local=0.32.2
launch_ros : latest=0.26.11, local=0.26.6
rclcpp : latest=28.1.15, local=28.1.6
ament_cmake_clang_tidy : latest=0.17.3, local=0.17.1
ros2lifecycle : latest=0.32.7, local=0.32.2
ament_cmake_ros : latest=0.12.0, local=0.12.0
composition_interfaces : latest=2.0.3, local=2.0.2
ros2param : latest=0.32.7, local=0.32.2
ament_cmake_clang_format : latest=0.17.3, local=0.17.1
ament_cmake : latest=2.5.5, local=2.5.3
ament_cmake_core : latest=2.5.5, local=2.5.3
rmw_implementation_cmake : latest=7.3.2, local=7.3.1
ament_cppcheck : latest=0.17.3, local=0.17.1
ros2run : latest=0.32.7, local=0.32.2
ament_lint_common : latest=0.17.3, local=0.17.1
geometry_msgs : latest=5.3.6, local=5.3.5
rcl_action : latest=9.2.8, local=9.2.4
rosidl_generator_py : latest=0.22.2, local=0.22.0
rosidl_parser : latest=4.6.7, local=4.6.5
sensor_msgs : latest=5.3.6, local=5.3.5
rcl : latest=9.2.8, local=9.2.4
launch_testing_ament_cmake : latest=3.4.10, local=3.4.3
tinyxml2_vendor : latest=0.9.2, local=0.9.1
unique_identifier_msgs : latest=2.5.0, local=2.5.0
builtin_interfaces : latest=2.0.3, local=2.0.2
ament_cmake_export_definitions : latest=2.5.5, local=2.5.3
rosidl_typesupport_cpp : latest=3.2.2, local=3.2.2
rcpputils : latest=2.11.2, local=2.11.1
ros2interface : latest=0.32.7, local=0.32.2
ament_cmake_gtest : latest=2.5.5, local=2.5.3
rcl_yaml_param_parser : latest=9.2.8, local=9.2.4
rosidl_runtime_cpp : latest=4.6.7, local=4.6.5
service_msgs : latest=2.0.3, local=2.0.2
ament_clang_tidy : latest=0.17.3, local=0.17.1
ros2component : latest=0.32.7, local=0.32.2
ros2doctor : latest=0.32.7, local=0.32.2
rosidl_pycommon : latest=4.6.7, local=4.6.5
rosidl_dynamic_typesupport : latest=0.1.2, local=0.1.2
ros2launch : latest=0.26.11, local=0.26.6
ament_lint_auto : latest=0.17.3, local=0.17.1
ament_uncrustify : latest=0.17.3, local=0.17.1
ament_cmake_export_targets : latest=2.5.5, local=2.5.3
ament_cmake_test : latest=2.5.5, local=2.5.3
ament_cmake_flake8 : latest=0.17.3, local=0.17.1
launch : latest=3.4.10, local=3.4.3
shape_msgs : latest=5.3.6, local=5.3.5
domain_coordinator : latest=0.12.0, local=0.12.0
diagnostic_msgs : latest=5.3.6, local=5.3.5
ament_cmake_xmllint : latest=0.17.3, local=0.17.1
ament_cmake_copyright : latest=0.17.3, local=0.17.1
rmw_fastrtps_cpp : latest=8.4.3, local=8.4.1
ros2service : latest=0.32.7, local=0.32.2
statistics_msgs : latest=2.0.3, local=2.0.2
ament_cmake_version : latest=2.5.5, local=2.5.3
ament_cmake_include_directories : latest=2.5.5, local=2.5.3
ament_package : latest=0.16.4, local=0.16.3
rcl_interfaces : latest=2.0.3, local=2.0.2
ament_cmake_export_link_flags : latest=2.5.5, local=2.5.3
rosidl_typesupport_introspection_c : latest=4.6.7, local=4.6.5
rmw : latest=7.3.2, local=7.3.1
console_bridge_vendor : latest=1.7.1, local=1.7.1
libyaml_vendor : latest=1.6.3, local=1.6.3
rosidl_dynamic_typesupport_fastrtps : latest=0.1.0, local=0.1.0
rcl_logging_interface : latest=3.1.1, local=3.1.1
ros2topic : latest=0.32.7, local=0.32.2
ament_lint_cmake : latest=0.17.3, local=0.17.1
ros2cli : latest=0.32.7, local=0.32.2
ros_core : latest=0.11.0, local=0.11.0
launch_xml : latest=3.4.10, local=3.4.3
ament_cmake_libraries : latest=2.5.5, local=2.5.3
ament_index_cpp : latest=1.8.2, local=1.8.1
libstatistics_collector : latest=1.7.4, local=1.7.4
std_srvs : latest=5.3.6, local=5.3.5
nav_msgs : latest=5.3.6, local=5.3.5
rosidl_typesupport_interface : latest=4.6.7, local=4.6.5
rosidl_typesupport_fastrtps_cpp : latest=3.6.3, local=3.6.1
ament_cmake_export_include_directories : latest=2.5.5, local=2.5.3
tracetools : latest=8.2.4, local=8.2.3
rosidl_generator_c : latest=4.6.7, local=4.6.5
rosidl_default_runtime : latest=1.6.0, local=1.6.0
actionlib_msgs : latest=5.3.6, local=5.3.5
std_msgs : latest=5.3.6, local=5.3.5
ament_cmake_export_interfaces : latest=2.5.5, local=2.5.3
ros2cli_common_extensions : latest=0.3.1, local=0.3.0
rmw_dds_common : latest=3.1.1, local=3.1.0
rcl_logging_spdlog : latest=3.1.1, local=3.1.1
rmw_implementation : latest=2.15.6, local=2.15.4
ament_cmake_cppcheck : latest=0.17.3, local=0.17.1
ament_cmake_auto : latest=2.5.5, local=2.5.3
rosidl_core_generators : latest=0.2.0, local=0.2.0
ament_copyright : latest=0.17.3, local=0.17.1
rosidl_typesupport_introspection_cpp : latest=4.6.7, local=4.6.5
ament_cmake_cpplint : latest=0.17.3, local=0.17.1
ros2pkg : latest=0.32.7, local=0.32.2
rclcpp_lifecycle : latest=28.1.15, local=28.1.6
uncrustify_vendor : latest=3.0.1, local=3.0.0
ament_index_python : latest=1.8.2, local=1.8.1
launch_testing_ros : latest=0.26.11, local=0.26.6
ament_cmake_gen_version_h : latest=2.5.5, local=2.5.3
common_interfaces : latest=5.3.6, local=5.3.5
visualization_msgs : latest=5.3.6, local=5.3.5
PLATFORM INFORMATION
system : Linux
platform info : Linux-6.8.0-90-generic-x86_64-with-glibc2.40
release : 6.8.0-90-generic
processor :
QOS COMPATIBILITY LIST
compatibility status : No publisher/subscriber pairs found
RMW MIDDLEWARE
middleware name : rmw_fastrtps_cpp
ROS 2 INFORMATION
distribution name : jazzy
distribution type : ros2
distribution status : active
release platforms : {'debian': ['bookworm'], 'rhel': ['9'], 'ubuntu': ['noble']}
TOPIC LIST
topic : none
publisher count : 0
subscriber count : 0
Steps to reproduce issue
Simple scripts to use:
- The launch file to reproduce (called example.launch.py in a package called some_example):
from launch import LaunchDescription
from launch.actions import ExecuteProcess
from launch_ros.actions import Node
def generate_launch_description():
return LaunchDescription(
[
Node(
package="examples_rclcpp_minimal_publisher",
executable="publisher_member_function",
prefix="just_forward"
),
ExecuteProcess(
cmd=["just_talk"],
prefix="just_forward",
output="screen"
)
]
)- The mentioned script for the prefix "just_forward"
#!/bin/bash
exec "$@"- Simple script to give some pulse to check also the ExecuteProcess "just_talk"
#!/bin/bash
# Define the message
MESSAGE="System pulse: Everything is running fine..."
echo "Script started. Press [CTRL+C] to stop."
# Loop indefinitely
while true; do
echo "$(date '+%H:%M:%S') - $MESSAGE"
sleep 1
donePut the launch file in any arbitrary package (here some_example) and the bash scripts somewhere in the $PATH.
Just execute simply:
ros2 launch some_example example.launch.pyExpected behavior
The ros2 launch output logger still uses the names which shows obviously what generated the output, i.e. "publisher_member_function" and "just_talk".
E.g. by removing the "prefixes" in the launch:
[INFO] [publisher_member_function-1]: process started with pid [38545]
[INFO] [just_talk-2]: process started with pid [38546]
[just_talk-2] Script started. Press [CTRL+C] to stop.
[just_talk-2] 16:12:57 - System pulse: Everything is running fine...
[publisher_member_function-1] [INFO] [1768921977.726699041] [minimal_publisher]: Publishing: 'Hello, world! 0'
[just_talk-2] 16:12:58 - System pulse: Everything is running fine...
[publisher_member_function-1] [INFO] [1768921978.226756063] [minimal_publisher]: Publishing: 'Hello, world! 1'
[publisher_member_function-1] [INFO] [1768921978.726687978] [minimal_publisher]: Publishing: 'Hello, world! 2'
[just_talk-2] 16:12:59 - System pulse: Everything is running fine...
[publisher_member_function-1] [INFO] [1768921979.226766489] [minimal_publisher]: Publishing: 'Hello, world! 3'
[publisher_member_function-1] [INFO] [1768921979.726733370] [minimal_publisher]: Publishing: 'Hello, world! 4'
[just_talk-2] 16:13:00 - System pulse: Everything is running fine...Actual behavior
The prefixes become the name of the executable:
[INFO] [just_forward-1]: process started with pid [38606]
[INFO] [just_forward-2]: process started with pid [38607]
[just_forward-2] Script started. Press [CTRL+C] to stop.
[just_forward-2] 16:13:38 - System pulse: Everything is running fine...
[just_forward-1] [INFO] [1768922018.574352928] [minimal_publisher]: Publishing: 'Hello, world! 0'
[just_forward-2] 16:13:39 - System pulse: Everything is running fine...
[just_forward-1] [INFO] [1768922019.074424427] [minimal_publisher]: Publishing: 'Hello, world! 1'
[just_forward-1] [INFO] [1768922019.574344769] [minimal_publisher]: Publishing: 'Hello, world! 2'
[just_forward-2] 16:13:40 - System pulse: Everything is running fine...
[just_forward-1] [INFO] [1768922020.074298004] [minimal_publisher]: Publishing: 'Hello, world! 3'Additional information
I would interpret the "prefix" as some kind of a prefix and not the concrete executable. If I have multiple executables needing the same prefix, I have in the end the same name for everything gaining absolutely nothing. The prefix should not be part of the name.