[ros2topic] ros2 topic pub does not seem to parse arrays of messages

[mxgrey]

Bug report

Required Info:

• Operating System:
  • Ubuntu 18.04
• Installation type:
  • Source
• Version or commit hash:
  • 7a65e1e
• DDS implementation:
  • Fast-RTPS
• Client library (if applicable):
  • N/A

Steps to reproduce issue

Run the following from the command line

$ ros2 topic pub some_pose_array geometry_msgs/PoseArray "{header: {stamp: {sec: 1, nanosec: 2}, frame_id: some_frame}, poses: [{position: {x: 0, y: 1, z: 2}, orientation: {x: 3, y: 4, z: 5, w: 6}}]}"

Expected behavior

The message gets published

Actual behavior

The console prints:

Failed to populate field 'poses': The 'poses' field must be a set or sequence and each value of type 'Pose'

Additional information

The specific example above isn't important, but it seems that ros2 topic pub cannot currently parse arrays of message types.

[jubeira]

@cottsay would you please assign this one to me? Thanks in advance!

[mikaelarguedas]

This looks like a duplicate of #59

I submitted a fix at #197 if you guys want to give it a try

[mxgrey]

Sorry for duplicating the issue! You're right; it's the same problem. I'll close this to avoid duplicated tickets, and I'll test the fix at the first chance that I get.

[jubeira]

Just for the record, I tested the fix with #197 and ros2/rosidl_python#30 and it worked fine 👍