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Fix joined hosts with RewritesState (#2785)

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This ensures that the joined hosts in the federation API are correct
after the state is rewritten. This might fix some races around the time
of joining federated rooms.
This commit is contained in:
Neil Alexander 2022-10-10 16:54:04 +01:00 committed by GitHub
parent b000db81ca
commit 6bf1912525
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 16 additions and 16 deletions
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32
federationapi/storage/shared/storage.go
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@ -70,27 +70,27 @@ func (d *Database) UpdateRoom(
) (joinedHosts []types.JoinedHost, err error) { ) (joinedHosts []types.JoinedHost, err error) {
err = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error { err = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
if purgeRoomFirst { if purgeRoomFirst {
// If the event is a create event then we'll delete all of the existing
// data for the room. The only reason that a create event would be replayed
// to us in this way is if we're about to receive the entire room state.
if err = d.FederationJoinedHosts.DeleteJoinedHostsForRoom(ctx, txn, roomID); err != nil { if err = d.FederationJoinedHosts.DeleteJoinedHostsForRoom(ctx, txn, roomID); err != nil {
return fmt.Errorf("d.FederationJoinedHosts.DeleteJoinedHosts: %w", err) return fmt.Errorf("d.FederationJoinedHosts.DeleteJoinedHosts: %w", err)
} }
} for _, add := range addHosts {
if err = d.FederationJoinedHosts.InsertJoinedHosts(ctx, txn, roomID, add.MemberEventID, add.ServerName); err != nil {
joinedHosts, err = d.FederationJoinedHosts.SelectJoinedHostsWithTx(ctx, txn, roomID) return err
if err != nil { }
return err joinedHosts = append(joinedHosts, add)
} }
} else {
for _, add := range addHosts { if joinedHosts, err = d.FederationJoinedHosts.SelectJoinedHostsWithTx(ctx, txn, roomID); err != nil {
err = d.FederationJoinedHosts.InsertJoinedHosts(ctx, txn, roomID, add.MemberEventID, add.ServerName) return err
if err != nil { }
for _, add := range addHosts {
if err = d.FederationJoinedHosts.InsertJoinedHosts(ctx, txn, roomID, add.MemberEventID, add.ServerName); err != nil {
return err
}
}
if err = d.FederationJoinedHosts.DeleteJoinedHosts(ctx, txn, removeHosts); err != nil {
return err return err
} }
}
if err = d.FederationJoinedHosts.DeleteJoinedHosts(ctx, txn, removeHosts); err != nil {
return err
} }
return nil return nil
}) })