Stats tracking

[stfwn]

I'm thinking the following:

1. A game server calls POST /v1/match/create without any additional info. This creates a Match row in the database with a globally unique id and an autofilled property started. The game server receives, in response: {'id': <some_int>, 'token': <some_secret_token>}.
2. Whenever it wants, the game server calls POST /v1/match/update with the id, secret token and the info about the match we want to track (TBD). These updates will be stored in a separate table MatchUpdate, which Match has a one-to-many relationship with. The final call to /v1/match/update will include something like {'ended': True}.
   • The ended event allows the Metaserver to process awards, and closes the Match to further MatchUpdates. There will be a cronjob that periodically cleans up old matches that were never marked as closed.
   • The separation between a Match and a MatchUpdate allows a reconstruction of each match. The granularity of the reconstruction depends on the frequency of updates.
   • Updates that are submitted to this route should contain the complete numbers up to that point in the match, not the difference since the last update. E.g. a field 'team_1_resources_mined' should be monotonically increasing with each next update -- the game server doesn't report how many resources were mined since the last update, but since the beginning of the match.
3. A route GET /v1/match/by-id returns the Match object and all of its MatchUpdates (in chronological order).
4. A route GET /v1/match/by-server-id returns all Match objects with their MatchUpdates in pages of 50 matches or so.