[ROS2] bag API

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Putting the main points here in the answer would be the normal protocol (and be especially helpful for those who don't read Korean). Should the blog post disappear, then this answer would not be helpful for the users of this site.

Modified following your comment. Thanks!

@kyungpyo I tried to use your c++ node and I get the following error:

terminate called after throwing an instance of 'eprosima::fastcdr::exception::NotEnoughMemoryException'
  what():  Not enough memory in the buffer stream

I use my own bag for this and I have changed the msg type to look for nav_msgs/msg/Odometry. Have you seen this error occur before?

Unfortunately, exactly what was predicted by @jayess is the case now: the original article disappeared. @kyungpyo: Would it be possible to post more detailed instructions in english on how to achieve the reading of rosbag2 data in the proposed way? Maybe some small sample code would be really helpful for a lot of people... Thanks in advance!

And there's no archive of it at the Internet Archive either

I +100 the point about including the important parts of the article in the answer itself, for the aforementioned reasons.

However, the article is still available: ROS2 Bag File Parsing 하기.

Actually my article is very personal project and I can't move it to in English now...(I am very busy these days... really sorry for that and late reply...) As @gvdhoorn mentioned you can find my article at new page.

But I think it is better to see example API source code: https://github.com/ros2/rosbag2/blob/...