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Standardize meta data to SYSTEM META packet #426

ryanatball opened this issue Apr 21, 2017 · 0 comments

Standardize meta data to SYSTEM META packet #426

ryanatball opened this issue Apr 21, 2017 · 0 comments


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@ryanatball ryanatball commented Apr 21, 2017

From now on COSMOS will always have a standardized meta data packet defined that at a minimum will contain the current configuration name, and a flag indicating if it is a command or telemetry packet.

The packet will be under the SYSTEM target and called META.

This will have the following additional effects:

  1. All standard COSMOS log files will start with the meta data packet. meta_packet_log_writer will be eliminated and essentially become part of the default packet_log_writer.
  2. Standard Streams can be introspected to determine if they contain commands or telemetry by looking at the first packet.
  3. Logs and streams can support the configuration changing mid-file or mid-stream by injecting a new meta packet with an updated configuration name
  4. Packet log file header data will now be redundant, but will probably be left to maintain compatibility (TBD)
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