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Persist partition|offset|user_id in the keyserver (#1226)

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* Persist partition|offset|user_id in the keyserver

Required for a query API which will be used by the syncapi which
will be called when a `/sync` request comes in which will return
a list of user IDs of people who have changed their device keys
between two tokens.

* Add tests and fix maxOffset bug

* s/offset/log_offset/g because 'offset' is a reserved word in postgres
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Kegsay 2020-07-28 17:38:30 +01:00 • committed by GitHub
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8
keyserver/storage/interface.go
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@ -43,4 +43,12 @@ type Database interface {
// ClaimKeys based on the 3-uple of user_id, device_id and algorithm name. Returns the keys claimed. Returns no error if a key
// cannot be claimed or if none exist for this (user, device, algorithm), instead it is omitted from the returned slice.
ClaimKeys(ctx context.Context, userToDeviceToAlgorithm map[string]map[string]string) ([]api.OneTimeKeys, error)
// StoreKeyChange stores key change metadata after the change has been sent to Kafka. `userID` is the the user who has changed
// their keys in some way.
StoreKeyChange(ctx context.Context, partition int32, offset int64, userID string) error
// KeyChanges returns a list of user IDs who have modified their keys from the offset given.
// Returns the offset of the latest key change.
KeyChanges(ctx context.Context, partition int32, fromOffset int64) (userIDs []string, latestOffset int64, err error)
}