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Implement backfill in the roomserver (#983)

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* Initial cut for backfilling

The syncserver now asks the roomserver via QueryBackfill (which already
existed to *handle* backfill requests) which then makes federation requests
via gomatrixserverlib.RequestBackfill.

Currently, tests fail on subsequent /messages requests because we don't know
which servers are in the room, because we are unable to get state snapshots
from a backfilled event because that code doesn't exist yet.

* WIP backfill, doesn't work

* Make initial backfill pass checks

* Persist backfilled events with state snapshots

* Remove debug lines

* Linting

* Review comments
This commit is contained in:
Kegsay 2020-04-28 11:46:47 +01:00 • committed by GitHub
parent 3a858afca2
commit 6d832ae544
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13 changed files with 367 additions and 193 deletions
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3
roomserver/storage/interface.go
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@ -31,7 +31,8 @@ type Database interface {
state []types.StateEntry,
) (types.StateSnapshotNID, error)
// Look up the state of a room at each event for a list of string event IDs.
// Returns an error if there is an error talking to the database
// Returns an error if there is an error talking to the database.
// The length of []types.StateAtEvent is guaranteed to equal the length of eventIDs if no error is returned.
// Returns a types.MissingEventError if the room state for the event IDs aren't in the database
StateAtEventIDs(ctx context.Context, eventIDs []string) ([]types.StateAtEvent, error)
// Look up the numeric IDs for a list of string event types.