Christopher Armstrong wrote:

logger.msg("scheduled-compaction-failed")

I'm confused. You don't want to use English, but… why not change your hyphens to spaces and call it a day? Also, why did it fail?

Here's a fuller example, modified to fit the API I'm using:

from twisted.python.log import Logger

log = Logger()

try:
  scheduleCompaction(…)
except Exception as e:
  log.error("Scheduled compaction failed: {why}", why=e,
            id=2C09A260-184C-44F9-B11F-E12B26B26C9C)

Some things to note about this:

- `log = Logger()` does some magic so that log.namespace is the name of your module "spacecombat.server.db". So, your "system" identifier is perhaps covered by that, with no typing.

- I have a format string instead of a fixed string. An observer emitting text can emit something informative. I know you think that text logs aren't useful, but a lot of us do. And you can use observers that ignore this format. Maybe there's an argument for making the format optional...

- Formatting isn't done here, so... cheap if you don't use it in any observers.

- I added a GUID id argument since you seem keen, I think on a unique key to identify the code point at which the message is logged. It's not used in the format, but an observer storing things in a DB could use that to take you straight to the relevant code, or identify multiple instances of that message, etc. if the format string isn't how you want to do that.

-wsv