search

orocos-toolchain / ocl

Orocos Component Library
Other
16 stars 33 forks source link

lua rospack find not found #34

Closed guihomework closed 9 years ago

guihomework commented 9 years ago

I am using ros indigo and ros-indigo-ocl install

The rospack command suggested in the LuaCookBook does not work for me

require "rttros"
=rttros.find_rospack("geometry_msgs")

and creates this error message

/opt/ros/indigo/share/lua/5.1/rttros.lua:39: Service.provides: no subservice rospack of service GlobalService
stack traceback:
        [C]: in function 'provides'
        /opt/ros/indigo/share/lua/5.1/rttros.lua:39: in function </opt/ros/indigo/share/lua/5.1/rttros.lua:31>
        (tail call): ?
        [C]:

this seems obvious as the operation is added to "ros" service and not to "rospack" in https://github.com/orocos/rtt_ros_integration/blob/indigo-devel/rtt_rospack/src/rtt_rospack_service.cpp

=rtt.provides("ros")
Service: ros
   Subservices: comm
   Ports:       
   Attributes:  
       protocol_id (int) = 3
   Properties:  
   Operations:  
        string find(string const& )

but called from rospack exactly at the line 39 https://github.com/orocos-toolchain/ocl/blob/toolchain-2.8/lua/modules/rttros.lua rtt_rospack_find=rtt.provides("rospack"):getOperation("find")

So the workaround I found is to add in all my lua files the fix as this

rtt_rospack_find=rtt.provides("ros"):getOperation("find")
=rtt_rospack_find("geometry_msgs")
/opt/ros/indigo/share/geometry_msgs

If this is a bug, can the rttros.lua be fixed upstream (possibly in indigo) ? The suggested one liner is indeed cleaner than these additional lines everywhere.

thanks

guihomework commented 9 years ago

33 fixes that, did not see this PR and that it was merged the next day