rosbag cannot record topics published by rosgo

[gelin]

ROS Melodic.

I'm trying to rosbag record /bagfiles/disk_usage where /bagfiles/disk_usage is a topic of a custom type bafiles/DiskUsage published using rosgo.

The rosgo application prints:

2019/07/16 16:42:00 [DEBUG] Slave API requestTopic(/rosbag_SyKvsmoy, /bagfiles/disk_usage, ...) called.
2019/07/16 16:42:00 [DEBUG] TCPROS requested
2019/07/16 16:42:00 [DEBUG] [TCPROS 172.24.0.1 50834]
2019/07/16 16:42:00 [DEBUG] Connected 172.24.0.3:53490
2019/07/16 16:42:00 [DEBUG] defaultPublisher.listenRemoteSubscriber loop
2019/07/16 16:42:00 [DEBUG] remoteSubscriberSession.start enter
2019/07/16 16:42:00 [DEBUG] TCPROS Connection Header:
2019/07/16 16:42:00 [DEBUG]   `callerid` = `/rosbag_SyKvsmoy`
2019/07/16 16:42:00 [DEBUG]   `md5sum` = `*`
2019/07/16 16:42:00 [DEBUG]   `tcp_nodelay` = `0`
2019/07/16 16:42:00 [DEBUG]   `topic` = `/bagfiles/disk_usage`
2019/07/16 16:42:00 [DEBUG]   `type` = `*`
2019/07/16 16:42:00 [DEBUG] remoteSubscriberSession.start exit
INFO Disconnected                                  subscriber= topic=/bagfiles/disk_usage
2019/07/16 16:42:00 [ERROR] remoteSubscriberSession &{0xc0001181e8 //bagfiles /bagfiles/disk_usage uint64 size_bytes       # disk size in bytes
uint64 used_bytes       # disk used space in bytes
uint64 avail_bytes      # disk available space in bytes
uint8 avail_percent     # disk available space in percent
 7858263e4ebcc3dbe66fcc0534a2cf5c bagfiles/DiskUsage 0xc00016a720 0xc000112f60 0xc0002161e0 0xc000126808 0x8a3a50 0x8a3cc0} error: Incomatible message type!

rosbag subscribes to the topics using the headers type="*" and md5sum="*".
While the rosgo makes this check during subscription:

    if headerMap["type"] != session.typeName || headerMap["md5sum"] != session.md5sum {
        panic(errors.New("Incomatible message type!"))
    }

Probably, some support for the wildcard "*" type and md5sum should be added.