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Remodel how device list change IDs are created

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Previously we made them using the offset Kafka supplied.
We don't run Kafka anymore, so now we make the SQL table assign
the change ID via an AUTOINCREMENTing ID. Redesign the
`keyserver_key_changes` table to have `UNIQUE(user_id)` so we
don't accumulate key changes forevermore, we now have at most 1
row per user which contains the highest change ID.

This needs a SQL migration.
This commit is contained in:
Kegan Dougal 2022-01-19 18:59:50 +00:00
parent 31f1810814
commit 5dc360481a
10 changed files with 109 additions and 91 deletions
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4
keyserver/storage/tables/interface.go
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@ -44,10 +44,10 @@ type DeviceKeys interface {
}
type KeyChanges interface {
InsertKeyChange(ctx context.Context, partition int32, offset int64, userID string) error
InsertKeyChange(ctx context.Context, userID string) (int64, error)
// SelectKeyChanges returns the set (de-duplicated) of users who have changed their keys between the two offsets.
// Results are exclusive of fromOffset and inclusive of toOffset. A toOffset of sarama.OffsetNewest means no upper offset.
SelectKeyChanges(ctx context.Context, partition int32, fromOffset, toOffset int64) (userIDs []string, latestOffset int64, err error)
SelectKeyChanges(ctx context.Context, fromOffset, toOffset int64) (userIDs []string, latestOffset int64, err error)
}
type StaleDeviceLists interface {