Kegsay a25d477cdb Initial syncapi storage refactor to share pq/sqlite code (#1030) ... * Initial syncapi storage refactor to share pq/sqlite code This goes down a different route than https://github.com/matrix-org/dendrite/pull/985 which tried to even reduce the boilerplate of `ExecContext` etc. The previous pattern fails badly when there are subtle differences in parameters and hence the shared boilerplate to read from `QueryContext` breaks. Rather than attacking it at that level, the main place where we want to reuse code is for the `syncserver.go` itself - the database implementation which has lots of complex logic. So instead, this commit: - Makes `invites_table.go` an interface. - Makes `SyncServerDatasource` use that interface - This means some functions are now identical for pq/sqlite, so factor them out to a temporary `shared.Database` struct which will grow until it replaces all of `SyncServerDatasource`. * Missing files		2020-05-13 17:28:42 +01:00
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backward_extremities.go	sql/backwards_extremities: Shift to table format and share code (#985)	2020-04-28 15:50:24 +01:00
interface.go	Initial syncapi storage refactor to share pq/sqlite code (#1030)	2020-05-13 17:28:42 +01:00