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Roomserver/federation input refactor (#2104)

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* Put federation client functions into their own file

* Look for missing auth events in RS input

* Remove retrieveMissingAuthEvents from federation API

* Logging

* Sorta transplanted the code over

* Use event origin failing all else

* Don't get stuck on mutexes:

* Add verifier

* Don't mark state events with zero snapshot NID as not existing

* Check missing state if not an outlier before storing the event

* Reject instead of soft-fail, don't copy roominfo so much

* Use synchronous contexts, limit time to fetch missing events

* Clean up some commented out bits

* Simplify `/send` endpoint significantly

* Submit async

* Report errors on sending to RS input

* Set max payload in NATS to 16MB

* Tweak metrics

* Add `workerForRoom` for tidiness

* Try skipping unmarshalling errors for RespMissingEvents

* Track missing prev events separately to avoid calculating state when not possible

* Tweak logic around checking missing state

* Care about state when checking missing prev events

* Don't check missing state for create events

* Try that again

* Handle create events better

* Send create room events as new

* Use given event kind when sending auth/state events

* Revert "Use given event kind when sending auth/state events"

This reverts commit 089d64d271.

* Only search for missing prev events or state for new events

* Tweaks

* We only have missing prev if we don't supply state

* Room version tweaks

* Allow async inputs again

* Apply backpressure to consumers/synchronous requests to hopefully stop things being overwhelmed

* Set timeouts on roomserver input tasks (need to decide what timeout makes sense)

* Use work queue policy, deliver all on restart

* Reduce chance of duplicates being sent by NATS

* Limit the number of servers we attempt to reduce backpressure

* Some review comment fixes

* Tidy up a couple things

* Don't limit servers, randomise order using map

* Some context refactoring

* Update gmsl

* Don't resend create events

* Set stateIDs length correctly or else the roomserver thinks there are missing events when there aren't

* Exclude our own servername

* Try backing off servers

* Make excluding self behaviour optional

* Exclude self from g_m_e

* Update sytest-whitelist

* Update consumers for the roomserver output stream

* Remember to send outliers for state returned from /gme

* Make full HTTP tests less upsetti

* Remove 'If a device list update goes missing, the server resyncs on the next one' from the sytest blacklist

* Remove debugging test

* Fix blacklist again, remove unnecessary duplicate context

* Clearer contexts, don't use background in case there's something happening there

* Don't queue up events more than once in memory

* Correctly identify create events when checking for state

* Fill in gaps again in /gme code

* Remove `AuthEventIDs` from `InputRoomEvent`

* Remove stray field

Co-authored-by: Kegan Dougal <kegan@matrix.org>
This commit is contained in:
Neil Alexander 2022-01-27 14:29:14 +00:00 committed by GitHub
parent 5b4999afa9
commit a763cbb0e1
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
46 changed files with 1549 additions and 1285 deletions
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29
clientapi/routing/createroom.go
View file

@ -451,23 +451,20 @@ func createRoom(
util.GetLogger(req.Context()).WithError(err).Error("authEvents.AddEvent failed")
return jsonerror.InternalServerError()
}
}
accumulated := gomatrixserverlib.UnwrapEventHeaders(builtEvents)
if err = roomserverAPI.SendEventWithState(
req.Context(),
rsAPI,
roomserverAPI.KindNew,
&gomatrixserverlib.RespState{
StateEvents: accumulated,
AuthEvents: accumulated,
},
ev.Headered(roomVersion),
nil,
false,
); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("SendEventWithState failed")
return jsonerror.InternalServerError()
}
inputs := make([]roomserverAPI.InputRoomEvent, 0, len(builtEvents))
for _, event := range builtEvents {
inputs = append(inputs, roomserverAPI.InputRoomEvent{
Kind: roomserverAPI.KindNew,
Event: event,
Origin: cfg.Matrix.ServerName,
SendAsServer: roomserverAPI.DoNotSendToOtherServers,
})
}
if err = roomserverAPI.SendInputRoomEvents(req.Context(), rsAPI, inputs, false); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("roomserverAPI.SendInputRoomEvents failed")
return jsonerror.InternalServerError()
}
// TODO(#269): Reserve room alias while we create the room. This stops us

1
clientapi/routing/membership.go
View file

@ -109,6 +109,7 @@ func sendMembership(ctx context.Context, accountDB accounts.Database, device *us
roomserverAPI.KindNew,
[]*gomatrixserverlib.HeaderedEvent{event.Event.Headered(roomVer)},
cfg.Matrix.ServerName,
cfg.Matrix.ServerName,
nil,
false,
); err != nil {

4
clientapi/routing/profile.go
View file

@ -169,7 +169,7 @@ func SetAvatarURL(
return jsonerror.InternalServerError()
}
if err := api.SendEvents(req.Context(), rsAPI, api.KindNew, events, cfg.Matrix.ServerName, nil, false); err != nil {
if err := api.SendEvents(req.Context(), rsAPI, api.KindNew, events, cfg.Matrix.ServerName, cfg.Matrix.ServerName, nil, false); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("SendEvents failed")
return jsonerror.InternalServerError()
}
@ -286,7 +286,7 @@ func SetDisplayName(
return jsonerror.InternalServerError()
}
if err := api.SendEvents(req.Context(), rsAPI, api.KindNew, events, cfg.Matrix.ServerName, nil, false); err != nil {
if err := api.SendEvents(req.Context(), rsAPI, api.KindNew, events, cfg.Matrix.ServerName, cfg.Matrix.ServerName, nil, false); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("SendEvents failed")
return jsonerror.InternalServerError()
}

2
clientapi/routing/redaction.go
View file

@ -120,7 +120,7 @@ func SendRedaction(
JSON: jsonerror.NotFound("Room does not exist"),
}
}
if err = roomserverAPI.SendEvents(context.Background(), rsAPI, roomserverAPI.KindNew, []*gomatrixserverlib.HeaderedEvent{e}, cfg.Matrix.ServerName, nil, false); err != nil {
if err = roomserverAPI.SendEvents(context.Background(), rsAPI, roomserverAPI.KindNew, []*gomatrixserverlib.HeaderedEvent{e}, cfg.Matrix.ServerName, cfg.Matrix.ServerName, nil, false); err != nil {
util.GetLogger(req.Context()).WithError(err).Errorf("failed to SendEvents")
return jsonerror.InternalServerError()
}

1
clientapi/routing/sendevent.go
View file

@ -121,6 +121,7 @@ func SendEvent(
e.Headered(verRes.RoomVersion),
},
cfg.Matrix.ServerName,
cfg.Matrix.ServerName,
txnAndSessionID,
false,
); err != nil {

1
clientapi/threepid/invites.go
View file

@ -366,6 +366,7 @@ func emit3PIDInviteEvent(
event.Headered(queryRes.RoomVersion),
},
cfg.Matrix.ServerName,
cfg.Matrix.ServerName,
nil,
false,
)

2
federationapi/api/api.go
View file

@ -23,6 +23,8 @@ type FederationClient interface {
MSC2836EventRelationships(ctx context.Context, dst gomatrixserverlib.ServerName, r gomatrixserverlib.MSC2836EventRelationshipsRequest, roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.MSC2836EventRelationshipsResponse, err error)
MSC2946Spaces(ctx context.Context, dst gomatrixserverlib.ServerName, roomID string, r gomatrixserverlib.MSC2946SpacesRequest) (res gomatrixserverlib.MSC2946SpacesResponse, err error)
LookupServerKeys(ctx context.Context, s gomatrixserverlib.ServerName, keyRequests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp) ([]gomatrixserverlib.ServerKeys, error)
GetEventAuth(ctx context.Context, s gomatrixserverlib.ServerName, roomVersion gomatrixserverlib.RoomVersion, roomID, eventID string) (res gomatrixserverlib.RespEventAuth, err error)
LookupMissingEvents(ctx context.Context, s gomatrixserverlib.ServerName, roomID string, missing gomatrixserverlib.MissingEvents, roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.RespMissingEvents, err error)
}
// FederationClientError is returned from FederationClient methods in the event of a problem.

6
federationapi/consumers/roomserver.go
View file

@ -66,7 +66,11 @@ func NewOutputRoomEventConsumer(
// Start consuming from room servers
func (s *OutputRoomEventConsumer) Start() error {
_, err := s.jetstream.Subscribe(s.topic, s.onMessage, s.durable)
_, err := s.jetstream.Subscribe(
s.topic, s.onMessage, s.durable,
nats.DeliverAll(),
nats.ManualAck(),
)
return err
}

150
federationapi/internal/api.go
View file

@ -1,9 +1,9 @@
package internal
import (
"context"
"crypto/ed25519"
"encoding/base64"
"fmt"
"sync"
"time"
@ -142,7 +142,7 @@ func failBlacklistableError(err error, stats *statistics.ServerStatistics) (unti
return
}
func (a *FederationInternalAPI) doRequest(
func (a *FederationInternalAPI) doRequestIfNotBackingOffOrBlacklisted(
s gomatrixserverlib.ServerName, request func() (interface{}, error),
) (interface{}, error) {
stats, err := a.isBlacklistedOrBackingOff(s)
@ -167,141 +167,15 @@ func (a *FederationInternalAPI) doRequest(
return res, nil
}
func (a *FederationInternalAPI) GetUserDevices(
ctx context.Context, s gomatrixserverlib.ServerName, userID string,
) (gomatrixserverlib.RespUserDevices, error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.GetUserDevices(ctx, s, userID)
})
if err != nil {
return gomatrixserverlib.RespUserDevices{}, err
func (a *FederationInternalAPI) doRequestIfNotBlacklisted(
s gomatrixserverlib.ServerName, request func() (interface{}, error),
) (interface{}, error) {
stats := a.statistics.ForServer(s)
if _, blacklisted := stats.BackoffInfo(); blacklisted {
return stats, &api.FederationClientError{
Err: fmt.Sprintf("server %q is blacklisted", s),
Blacklisted: true,
}
}
return ires.(gomatrixserverlib.RespUserDevices), nil
}
func (a *FederationInternalAPI) ClaimKeys(
ctx context.Context, s gomatrixserverlib.ServerName, oneTimeKeys map[string]map[string]string,
) (gomatrixserverlib.RespClaimKeys, error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.ClaimKeys(ctx, s, oneTimeKeys)
})
if err != nil {
return gomatrixserverlib.RespClaimKeys{}, err
}
return ires.(gomatrixserverlib.RespClaimKeys), nil
}
func (a *FederationInternalAPI) QueryKeys(
ctx context.Context, s gomatrixserverlib.ServerName, keys map[string][]string,
) (gomatrixserverlib.RespQueryKeys, error) {
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.QueryKeys(ctx, s, keys)
})
if err != nil {
return gomatrixserverlib.RespQueryKeys{}, err
}
return ires.(gomatrixserverlib.RespQueryKeys), nil
}
func (a *FederationInternalAPI) Backfill(
ctx context.Context, s gomatrixserverlib.ServerName, roomID string, limit int, eventIDs []string,
) (res gomatrixserverlib.Transaction, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.Backfill(ctx, s, roomID, limit, eventIDs)
})
if err != nil {
return gomatrixserverlib.Transaction{}, err
}
return ires.(gomatrixserverlib.Transaction), nil
}
func (a *FederationInternalAPI) LookupState(
ctx context.Context, s gomatrixserverlib.ServerName, roomID, eventID string, roomVersion gomatrixserverlib.RoomVersion,
) (res gomatrixserverlib.RespState, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.LookupState(ctx, s, roomID, eventID, roomVersion)
})
if err != nil {
return gomatrixserverlib.RespState{}, err
}
return ires.(gomatrixserverlib.RespState), nil
}
func (a *FederationInternalAPI) LookupStateIDs(
ctx context.Context, s gomatrixserverlib.ServerName, roomID, eventID string,
) (res gomatrixserverlib.RespStateIDs, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.LookupStateIDs(ctx, s, roomID, eventID)
})
if err != nil {
return gomatrixserverlib.RespStateIDs{}, err
}
return ires.(gomatrixserverlib.RespStateIDs), nil
}
func (a *FederationInternalAPI) GetEvent(
ctx context.Context, s gomatrixserverlib.ServerName, eventID string,
) (res gomatrixserverlib.Transaction, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.GetEvent(ctx, s, eventID)
})
if err != nil {
return gomatrixserverlib.Transaction{}, err
}
return ires.(gomatrixserverlib.Transaction), nil
}
func (a *FederationInternalAPI) LookupServerKeys(
ctx context.Context, s gomatrixserverlib.ServerName, keyRequests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
) ([]gomatrixserverlib.ServerKeys, error) {
ctx, cancel := context.WithTimeout(ctx, time.Minute)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.LookupServerKeys(ctx, s, keyRequests)
})
if err != nil {
return []gomatrixserverlib.ServerKeys{}, err
}
return ires.([]gomatrixserverlib.ServerKeys), nil
}
func (a *FederationInternalAPI) MSC2836EventRelationships(
ctx context.Context, s gomatrixserverlib.ServerName, r gomatrixserverlib.MSC2836EventRelationshipsRequest,
roomVersion gomatrixserverlib.RoomVersion,
) (res gomatrixserverlib.MSC2836EventRelationshipsResponse, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Minute)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.MSC2836EventRelationships(ctx, s, r, roomVersion)
})
if err != nil {
return res, err
}
return ires.(gomatrixserverlib.MSC2836EventRelationshipsResponse), nil
}
func (a *FederationInternalAPI) MSC2946Spaces(
ctx context.Context, s gomatrixserverlib.ServerName, roomID string, r gomatrixserverlib.MSC2946SpacesRequest,
) (res gomatrixserverlib.MSC2946SpacesResponse, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Minute)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.MSC2946Spaces(ctx, s, roomID, r)
})
if err != nil {
return res, err
}
return ires.(gomatrixserverlib.MSC2946SpacesResponse), nil
return request()
}

180
federationapi/internal/federationclient.go Normal file
View file

@ -0,0 +1,180 @@
package internal
import (
"context"
"time"
"github.com/matrix-org/gomatrixserverlib"
)
// Functions here are "proxying" calls to the gomatrixserverlib federation
// client.
func (a *FederationInternalAPI) GetEventAuth(
ctx context.Context, s gomatrixserverlib.ServerName,
roomVersion gomatrixserverlib.RoomVersion, roomID, eventID string,
) (res gomatrixserverlib.RespEventAuth, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.GetEventAuth(ctx, s, roomVersion, roomID, eventID)
})
if err != nil {
return gomatrixserverlib.RespEventAuth{}, err
}
return ires.(gomatrixserverlib.RespEventAuth), nil
}
func (a *FederationInternalAPI) GetUserDevices(
ctx context.Context, s gomatrixserverlib.ServerName, userID string,
) (gomatrixserverlib.RespUserDevices, error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.GetUserDevices(ctx, s, userID)
})
if err != nil {
return gomatrixserverlib.RespUserDevices{}, err
}
return ires.(gomatrixserverlib.RespUserDevices), nil
}
func (a *FederationInternalAPI) ClaimKeys(
ctx context.Context, s gomatrixserverlib.ServerName, oneTimeKeys map[string]map[string]string,
) (gomatrixserverlib.RespClaimKeys, error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequestIfNotBackingOffOrBlacklisted(s, func() (interface{}, error) {
return a.federation.ClaimKeys(ctx, s, oneTimeKeys)
})
if err != nil {
return gomatrixserverlib.RespClaimKeys{}, err
}
return ires.(gomatrixserverlib.RespClaimKeys), nil
}
func (a *FederationInternalAPI) QueryKeys(
ctx context.Context, s gomatrixserverlib.ServerName, keys map[string][]string,
) (gomatrixserverlib.RespQueryKeys, error) {
ires, err := a.doRequestIfNotBackingOffOrBlacklisted(s, func() (interface{}, error) {
return a.federation.QueryKeys(ctx, s, keys)
})
if err != nil {
return gomatrixserverlib.RespQueryKeys{}, err
}
return ires.(gomatrixserverlib.RespQueryKeys), nil
}
func (a *FederationInternalAPI) Backfill(
ctx context.Context, s gomatrixserverlib.ServerName, roomID string, limit int, eventIDs []string,
) (res gomatrixserverlib.Transaction, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.Backfill(ctx, s, roomID, limit, eventIDs)
})
if err != nil {
return gomatrixserverlib.Transaction{}, err
}
return ires.(gomatrixserverlib.Transaction), nil
}
func (a *FederationInternalAPI) LookupState(
ctx context.Context, s gomatrixserverlib.ServerName, roomID, eventID string, roomVersion gomatrixserverlib.RoomVersion,
) (res gomatrixserverlib.RespState, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.LookupState(ctx, s, roomID, eventID, roomVersion)
})
if err != nil {
return gomatrixserverlib.RespState{}, err
}
return ires.(gomatrixserverlib.RespState), nil
}
func (a *FederationInternalAPI) LookupStateIDs(
ctx context.Context, s gomatrixserverlib.ServerName, roomID, eventID string,
) (res gomatrixserverlib.RespStateIDs, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.LookupStateIDs(ctx, s, roomID, eventID)
})
if err != nil {
return gomatrixserverlib.RespStateIDs{}, err
}
return ires.(gomatrixserverlib.RespStateIDs), nil
}
func (a *FederationInternalAPI) LookupMissingEvents(
ctx context.Context, s gomatrixserverlib.ServerName, roomID string,
missing gomatrixserverlib.MissingEvents, roomVersion gomatrixserverlib.RoomVersion,
) (res gomatrixserverlib.RespMissingEvents, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.LookupMissingEvents(ctx, s, roomID, missing, roomVersion)
})
if err != nil {
return gomatrixserverlib.RespMissingEvents{}, err
}
return ires.(gomatrixserverlib.RespMissingEvents), nil
}
func (a *FederationInternalAPI) GetEvent(
ctx context.Context, s gomatrixserverlib.ServerName, eventID string,
) (res gomatrixserverlib.Transaction, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.GetEvent(ctx, s, eventID)
})
if err != nil {
return gomatrixserverlib.Transaction{}, err
}
return ires.(gomatrixserverlib.Transaction), nil
}
func (a *FederationInternalAPI) LookupServerKeys(
ctx context.Context, s gomatrixserverlib.ServerName, keyRequests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
) ([]gomatrixserverlib.ServerKeys, error) {
ctx, cancel := context.WithTimeout(ctx, time.Minute)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.LookupServerKeys(ctx, s, keyRequests)
})
if err != nil {
return []gomatrixserverlib.ServerKeys{}, err
}
return ires.([]gomatrixserverlib.ServerKeys), nil
}
func (a *FederationInternalAPI) MSC2836EventRelationships(
ctx context.Context, s gomatrixserverlib.ServerName, r gomatrixserverlib.MSC2836EventRelationshipsRequest,
roomVersion gomatrixserverlib.RoomVersion,
) (res gomatrixserverlib.MSC2836EventRelationshipsResponse, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Minute)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.MSC2836EventRelationships(ctx, s, r, roomVersion)
})
if err != nil {
return res, err
}
return ires.(gomatrixserverlib.MSC2836EventRelationshipsResponse), nil
}
func (a *FederationInternalAPI) MSC2946Spaces(
ctx context.Context, s gomatrixserverlib.ServerName, roomID string, r gomatrixserverlib.MSC2946SpacesRequest,
) (res gomatrixserverlib.MSC2946SpacesResponse, err error) {
ctx, cancel := context.WithTimeout(ctx, time.Minute)
defer cancel()
ires, err := a.doRequestIfNotBlacklisted(s, func() (interface{}, error) {
return a.federation.MSC2946Spaces(ctx, s, roomID, r)
})
if err != nil {
return res, err
}
return ires.(gomatrixserverlib.MSC2946SpacesResponse), nil
}

8
federationapi/internal/perform.go
View file

@ -249,7 +249,9 @@ func (r *FederationInternalAPI) performJoinUsingServer(
roomserverAPI.KindNew,
respState,
event.Headered(respMakeJoin.RoomVersion),
nil, false,
serverName,
nil,
false,
); err != nil {
logrus.WithFields(logrus.Fields{
"room_id": roomID,
@ -430,7 +432,9 @@ func (r *FederationInternalAPI) performOutboundPeekUsingServer(
roomserverAPI.KindNew,
&respState,
respPeek.LatestEvent.Headered(respPeek.RoomVersion),
nil, false,
serverName,
nil,
false,
); err != nil {
return fmt.Errorf("r.producer.SendEventWithState: %w", err)
}

2
federationapi/internal/query.go
View file

@ -28,7 +28,7 @@ func (f *FederationInternalAPI) QueryJoinedHostServerNamesInRoom(
func (a *FederationInternalAPI) fetchServerKeysDirectly(ctx context.Context, serverName gomatrixserverlib.ServerName) (*gomatrixserverlib.ServerKeys, error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(serverName, func() (interface{}, error) {
ires, err := a.doRequestIfNotBackingOffOrBlacklisted(serverName, func() (interface{}, error) {
return a.federation.GetServerKeys(ctx, serverName)
})
if err != nil {

99
federationapi/inthttp/client.go
View file

@ -26,16 +26,18 @@ const (
FederationAPIPerformServersAlivePath = "/federationapi/performServersAlive"
FederationAPIPerformBroadcastEDUPath = "/federationapi/performBroadcastEDU"
FederationAPIGetUserDevicesPath = "/federationapi/client/getUserDevices"
FederationAPIClaimKeysPath = "/federationapi/client/claimKeys"
FederationAPIQueryKeysPath = "/federationapi/client/queryKeys"
FederationAPIBackfillPath = "/federationapi/client/backfill"
FederationAPILookupStatePath = "/federationapi/client/lookupState"
FederationAPILookupStateIDsPath = "/federationapi/client/lookupStateIDs"
FederationAPIGetEventPath = "/federationapi/client/getEvent"
FederationAPILookupServerKeysPath = "/federationapi/client/lookupServerKeys"
FederationAPIEventRelationshipsPath = "/federationapi/client/msc2836eventRelationships"
FederationAPISpacesSummaryPath = "/federationapi/client/msc2946spacesSummary"
FederationAPIGetUserDevicesPath = "/federationapi/client/getUserDevices"
FederationAPIClaimKeysPath = "/federationapi/client/claimKeys"
FederationAPIQueryKeysPath = "/federationapi/client/queryKeys"
FederationAPIBackfillPath = "/federationapi/client/backfill"
FederationAPILookupStatePath = "/federationapi/client/lookupState"
FederationAPILookupStateIDsPath = "/federationapi/client/lookupStateIDs"
FederationAPILookupMissingEventsPath = "/federationapi/client/lookupMissingEvents"
FederationAPIGetEventPath = "/federationapi/client/getEvent"
FederationAPILookupServerKeysPath = "/federationapi/client/lookupServerKeys"
FederationAPIEventRelationshipsPath = "/federationapi/client/msc2836eventRelationships"
FederationAPISpacesSummaryPath = "/federationapi/client/msc2946spacesSummary"
FederationAPIGetEventAuthPath = "/federationapi/client/getEventAuth"
FederationAPIInputPublicKeyPath = "/federationapi/inputPublicKey"
FederationAPIQueryPublicKeyPath = "/federationapi/queryPublicKey"
@ -353,6 +355,49 @@ func (h *httpFederationInternalAPI) LookupStateIDs(
return *response.Res, nil
}
type lookupMissingEvents struct {
S gomatrixserverlib.ServerName
RoomID string
Missing gomatrixserverlib.MissingEvents
RoomVersion gomatrixserverlib.RoomVersion
Res struct {
Events []gomatrixserverlib.RawJSON `json:"events"`
}
Err *api.FederationClientError
}
func (h *httpFederationInternalAPI) LookupMissingEvents(
ctx context.Context, s gomatrixserverlib.ServerName, roomID string,
missing gomatrixserverlib.MissingEvents, roomVersion gomatrixserverlib.RoomVersion,
) (res gomatrixserverlib.RespMissingEvents, err error) {
span, ctx := opentracing.StartSpanFromContext(ctx, "LookupMissingEvents")
defer span.Finish()
request := lookupMissingEvents{
S: s,
RoomID: roomID,
Missing: missing,
RoomVersion: roomVersion,
}
apiURL := h.federationAPIURL + FederationAPILookupMissingEventsPath
err = httputil.PostJSON(ctx, span, h.httpClient, apiURL, &request, &request)
if err != nil {
return res, err
}
if request.Err != nil {
return res, request.Err
}
res.Events = make([]*gomatrixserverlib.Event, 0, len(request.Res.Events))
for _, js := range request.Res.Events {
ev, err := gomatrixserverlib.NewEventFromUntrustedJSON(js, roomVersion)
if err != nil {
return res, err
}
res.Events = append(res.Events, ev)
}
return res, nil
}
type getEvent struct {
S gomatrixserverlib.ServerName
EventID string
@ -382,6 +427,40 @@ func (h *httpFederationInternalAPI) GetEvent(
return *response.Res, nil
}
type getEventAuth struct {
S gomatrixserverlib.ServerName
RoomVersion gomatrixserverlib.RoomVersion
RoomID string
EventID string
Res *gomatrixserverlib.RespEventAuth
Err *api.FederationClientError
}
func (h *httpFederationInternalAPI) GetEventAuth(
ctx context.Context, s gomatrixserverlib.ServerName,
roomVersion gomatrixserverlib.RoomVersion, roomID, eventID string,
) (gomatrixserverlib.RespEventAuth, error) {
span, ctx := opentracing.StartSpanFromContext(ctx, "GetEventAuth")
defer span.Finish()
request := getEventAuth{
S: s,
RoomVersion: roomVersion,
RoomID: roomID,
EventID: eventID,
}
var response getEventAuth
apiURL := h.federationAPIURL + FederationAPIGetEventAuthPath
err := httputil.PostJSON(ctx, span, h.httpClient, apiURL, &request, &response)
if err != nil {
return gomatrixserverlib.RespEventAuth{}, err
}
if response.Err != nil {
return gomatrixserverlib.RespEventAuth{}, response.Err
}
return *response.Res, nil
}
func (h *httpFederationInternalAPI) QueryServerKeys(
ctx context.Context, req *api.QueryServerKeysRequest, res *api.QueryServerKeysResponse,
) error {

50
federationapi/inthttp/server.go
View file

@ -241,6 +241,34 @@ func AddRoutes(intAPI api.FederationInternalAPI, internalAPIMux *mux.Router) {
return util.JSONResponse{Code: http.StatusOK, JSON: request}
}),
)
internalAPIMux.Handle(
FederationAPILookupMissingEventsPath,
httputil.MakeInternalAPI("LookupMissingEvents", func(req *http.Request) util.JSONResponse {
var request lookupMissingEvents
if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
return util.MessageResponse(http.StatusBadRequest, err.Error())
}
res, err := intAPI.LookupMissingEvents(req.Context(), request.S, request.RoomID, request.Missing, request.RoomVersion)
if err != nil {
ferr, ok := err.(*api.FederationClientError)
if ok {
request.Err = ferr
} else {
request.Err = &api.FederationClientError{
Err: err.Error(),
}
}
}
for _, event := range res.Events {
js, err := json.Marshal(event)
if err != nil {
return util.MessageResponse(http.StatusInternalServerError, err.Error())
}
request.Res.Events = append(request.Res.Events, js)
}
return util.JSONResponse{Code: http.StatusOK, JSON: request}
}),
)
internalAPIMux.Handle(
FederationAPIGetEventPath,
httputil.MakeInternalAPI("GetEvent", func(req *http.Request) util.JSONResponse {
@ -263,6 +291,28 @@ func AddRoutes(intAPI api.FederationInternalAPI, internalAPIMux *mux.Router) {
return util.JSONResponse{Code: http.StatusOK, JSON: request}
}),
)
internalAPIMux.Handle(
FederationAPIGetEventAuthPath,
httputil.MakeInternalAPI("GetEventAuth", func(req *http.Request) util.JSONResponse {
var request getEventAuth
if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
return util.MessageResponse(http.StatusBadRequest, err.Error())
}
res, err := intAPI.GetEventAuth(req.Context(), request.S, request.RoomVersion, request.RoomID, request.EventID)
if err != nil {
ferr, ok := err.(*api.FederationClientError)
if ok {
request.Err = ferr
} else {
request.Err = &api.FederationClientError{
Err: err.Error(),
}
}
}
request.Res = &res
return util.JSONResponse{Code: http.StatusOK, JSON: request}
}),
)
internalAPIMux.Handle(
FederationAPIQueryServerKeysPath,
httputil.MakeInternalAPI("QueryServerKeys", func(req *http.Request) util.JSONResponse {

1
federationapi/routing/join.go
View file

@ -324,7 +324,6 @@ func SendJoin(
{
Kind: api.KindNew,
Event: event.Headered(stateAndAuthChainResponse.RoomVersion),
AuthEventIDs: event.AuthEventIDs(),
SendAsServer: string(cfg.Matrix.ServerName),
TransactionID: nil,
},

1
federationapi/routing/leave.go
View file

@ -275,7 +275,6 @@ func SendLeave(
{
Kind: api.KindNew,
Event: event.Headered(verRes.RoomVersion),
AuthEventIDs: event.AuthEventIDs(),
SendAsServer: string(cfg.Matrix.ServerName),
TransactionID: nil,
},

2
federationapi/routing/publicrooms.go
View file

@ -133,8 +133,6 @@ func fillInRooms(ctx context.Context, roomIDs []string, rsAPI roomserverAPI.Room
util.GetLogger(ctx).WithError(err).Error("QueryBulkStateContent failed")
return nil, err
}
util.GetLogger(ctx).Infof("room IDs: %+v", roomIDs)
util.GetLogger(ctx).Infof("State res: %+v", stateRes.Rooms)
chunk := make([]gomatrixserverlib.PublicRoom, len(roomIDs))
i := 0
for roomID, data := range stateRes.Rooms {

1061
federationapi/routing/send.go
View file

File diff suppressed because it is too large Load diff

7
federationapi/routing/send_test.go
View file

@ -4,7 +4,6 @@ import (
"context"
"encoding/json"
"fmt"
"reflect"
"testing"
"time"
@ -244,8 +243,6 @@ func mustCreateTransaction(rsAPI api.RoomserverInternalAPI, fedClient txnFederat
eduAPI: &testEDUProducer{},
keys: &test.NopJSONVerifier{},
federation: fedClient,
haveEvents: make(map[string]*gomatrixserverlib.HeaderedEvent),
hadEvents: make(map[string]bool),
roomsMu: internal.NewMutexByRoom(),
}
t.PDUs = pdus
@ -279,6 +276,7 @@ NextPDU:
}
}
/*
func fromStateTuples(tuples []gomatrixserverlib.StateKeyTuple, omitTuples []gomatrixserverlib.StateKeyTuple) (result []*gomatrixserverlib.HeaderedEvent) {
NextTuple:
for _, t := range tuples {
@ -294,6 +292,7 @@ NextTuple:
}
return
}
*/
func assertInputRoomEvents(t *testing.T, got []api.InputRoomEvent, want []*gomatrixserverlib.HeaderedEvent) {
for _, g := range got {
@ -355,6 +354,7 @@ func TestTransactionFailAuthChecks(t *testing.T) {
// we request them from /get_missing_events. It works by setting PrevEventsExist=false in the roomserver query response,
// resulting in a call to /get_missing_events which returns the missing prev event. Both events should be processed in
// topological order and sent to the roomserver.
/*
func TestTransactionFetchMissingPrevEvents(t *testing.T) {
haveEvent := testEvents[len(testEvents)-3]
prevEvent := testEvents[len(testEvents)-2]
@ -619,3 +619,4 @@ func TestTransactionFetchMissingStateByStateIDs(t *testing.T) {
mustProcessTransaction(t, txn, nil)
assertInputRoomEvents(t, rsAPI.inputRoomEvents, []*gomatrixserverlib.HeaderedEvent{eventB, eventC, eventD})
}
*/

3
federationapi/routing/threepid.go
View file

@ -89,7 +89,7 @@ func CreateInvitesFrom3PIDInvites(
}
// Send all the events
if err := api.SendEvents(req.Context(), rsAPI, api.KindNew, evs, cfg.Matrix.ServerName, nil, false); err != nil {
if err := api.SendEvents(req.Context(), rsAPI, api.KindNew, evs, "TODO", cfg.Matrix.ServerName, nil, false); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("SendEvents failed")
return jsonerror.InternalServerError()
}
@ -178,6 +178,7 @@ func ExchangeThirdPartyInvite(
[]*gomatrixserverlib.HeaderedEvent{
signedEvent.Event.Headered(verRes.RoomVersion),
},
request.Origin(),
cfg.Matrix.ServerName,
nil,
false,

2
go.mod
View file

@ -40,7 +40,7 @@ require (
github.com/matrix-org/go-http-js-libp2p v0.0.0-20200518170932-783164aeeda4
github.com/matrix-org/go-sqlite3-js v0.0.0-20210709140738-b0d1ba599a6d
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16
github.com/matrix-org/gomatrixserverlib v0.0.0-20220124102425-f3e2ef8d8e59
github.com/matrix-org/gomatrixserverlib v0.0.0-20220125141909-d6fd2b28b8e8
github.com/matrix-org/pinecone v0.0.0-20211216094739-095c5ea64d02
github.com/matrix-org/util v0.0.0-20200807132607-55161520e1d4
github.com/mattn/go-sqlite3 v1.14.8

4
go.sum
View file

@ -990,8 +990,8 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20210709140738-b0d1ba599a6d/go.mod h1
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26/go.mod h1:3fxX6gUjWyI/2Bt7J1OLhpCzOfO/bB3AiX0cJtEKud0=
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16 h1:ZtO5uywdd5dLDCud4r0r55eP4j9FuUNpl60Gmntcop4=
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
github.com/matrix-org/gomatrixserverlib v0.0.0-20220124102425-f3e2ef8d8e59 h1:KtXMLsXeSRx/pPq0+HTDmM+J+WTxwzt+3O17xA3u0WY=
github.com/matrix-org/gomatrixserverlib v0.0.0-20220124102425-f3e2ef8d8e59/go.mod h1:qFvhfbQ5orQxlH9vCiFnP4dW27xxnWHdNUBKyj/fbiY=
github.com/matrix-org/gomatrixserverlib v0.0.0-20220125141909-d6fd2b28b8e8 h1:v57j5jbSBgY27COjgqAtYPVX2uxxPJP/2hI3uOPCz6M=
github.com/matrix-org/gomatrixserverlib v0.0.0-20220125141909-d6fd2b28b8e8/go.mod h1:qFvhfbQ5orQxlH9vCiFnP4dW27xxnWHdNUBKyj/fbiY=
github.com/matrix-org/pinecone v0.0.0-20211216094739-095c5ea64d02 h1:tLn95Nqq3KPOZAjogGZTKMEkn4mMIzKu09biRTz/Ack=
github.com/matrix-org/pinecone v0.0.0-20211216094739-095c5ea64d02/go.mod h1:r6dsL+ylE0yXe/7zh8y/Bdh6aBYI1r+u4yZni9A4iyk=
github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7/go.mod h1:vVQlW/emklohkZnOPwD3LrZUBqdfsbiyO3p1lNV8F6U=

8
roomserver/api/input.go
View file

@ -54,12 +54,8 @@ type InputRoomEvent struct {
Kind Kind `json:"kind"`
// The event JSON for the event to add.
Event *gomatrixserverlib.HeaderedEvent `json:"event"`
// List of state event IDs that authenticate this event.
// These are likely derived from the "auth_events" JSON key of the event.
// But can be different because the "auth_events" key can be incomplete or wrong.
// For example many matrix events forget to reference the m.room.create event even though it is needed for auth.
// (since synapse allows this to happen we have to allow it as well.)
AuthEventIDs []string `json:"auth_event_ids"`
// Which server told us about this event.
Origin gomatrixserverlib.ServerName `json:"origin"`
// Whether the state is supplied as a list of event IDs or whether it
// should be derived from the state at the previous events.
HasState bool `json:"has_state"`

13
roomserver/api/wrapper.go
View file

@ -26,6 +26,7 @@ import (
func SendEvents(
ctx context.Context, rsAPI RoomserverInternalAPI,
kind Kind, events []*gomatrixserverlib.HeaderedEvent,
origin gomatrixserverlib.ServerName,
sendAsServer gomatrixserverlib.ServerName, txnID *TransactionID,
async bool,
) error {
@ -34,7 +35,7 @@ func SendEvents(
ires[i] = InputRoomEvent{
Kind: kind,
Event: event,
AuthEventIDs: event.AuthEventIDs(),
Origin: origin,
SendAsServer: string(sendAsServer),
TransactionID: txnID,
}
@ -48,7 +49,7 @@ func SendEvents(
func SendEventWithState(
ctx context.Context, rsAPI RoomserverInternalAPI, kind Kind,
state *gomatrixserverlib.RespState, event *gomatrixserverlib.HeaderedEvent,
haveEventIDs map[string]bool, async bool,
origin gomatrixserverlib.ServerName, haveEventIDs map[string]bool, async bool,
) error {
outliers, err := state.Events()
if err != nil {
@ -61,9 +62,9 @@ func SendEventWithState(
continue
}
ires = append(ires, InputRoomEvent{
Kind: KindOutlier,
Event: outlier.Headered(event.RoomVersion),
AuthEventIDs: outlier.AuthEventIDs(),
Kind: KindOutlier,
Event: outlier.Headered(event.RoomVersion),
Origin: origin,
})
}
@ -75,7 +76,7 @@ func SendEventWithState(
ires = append(ires, InputRoomEvent{
Kind: kind,
Event: event,
AuthEventIDs: event.AuthEventIDs(),
Origin: origin,
HasState: true,
StateEventIDs: stateEventIDs,
})

29
roomserver/internal/api.go
View file

@ -37,8 +37,11 @@ type RoomserverInternalAPI struct {
Cache caching.RoomServerCaches
ServerName gomatrixserverlib.ServerName
KeyRing gomatrixserverlib.JSONVerifier
ServerACLs *acls.ServerACLs
fsAPI fsAPI.FederationInternalAPI
asAPI asAPI.AppServiceQueryAPI
JetStream nats.JetStreamContext
Durable nats.SubOpt
InputRoomEventTopic string // JetStream topic for new input room events
OutputRoomEventTopic string // JetStream topic for new output room events
PerspectiveServerNames []gomatrixserverlib.ServerName
@ -56,21 +59,17 @@ func NewRoomserverAPI(
Cache: caches,
ServerName: cfg.Matrix.ServerName,
PerspectiveServerNames: perspectiveServerNames,
InputRoomEventTopic: inputRoomEventTopic,
OutputRoomEventTopic: outputRoomEventTopic,
JetStream: consumer,
Durable: cfg.Matrix.JetStream.Durable("RoomserverInputConsumer"),
ServerACLs: serverACLs,
Queryer: &query.Queryer{
DB: roomserverDB,
Cache: caches,
ServerName: cfg.Matrix.ServerName,
ServerACLs: serverACLs,
},
Inputer: &input.Inputer{
DB: roomserverDB,
InputRoomEventTopic: inputRoomEventTopic,
OutputRoomEventTopic: outputRoomEventTopic,
JetStream: consumer,
Durable: cfg.Matrix.JetStream.Durable("RoomserverInputConsumer"),
ServerName: cfg.Matrix.ServerName,
ACLs: serverACLs,
},
// perform-er structs get initialised when we have a federation sender to use
}
return a
@ -83,6 +82,18 @@ func (r *RoomserverInternalAPI) SetFederationAPI(fsAPI fsAPI.FederationInternalA
r.fsAPI = fsAPI
r.KeyRing = keyRing
r.Inputer = &input.Inputer{
DB: r.DB,
InputRoomEventTopic: r.InputRoomEventTopic,
OutputRoomEventTopic: r.OutputRoomEventTopic,
JetStream: r.JetStream,
Durable: r.Durable,
ServerName: r.Cfg.Matrix.ServerName,
FSAPI: fsAPI,
KeyRing: keyRing,
ACLs: r.ServerACLs,
Queryer: r.Queryer,
}
r.Inviter = &perform.Inviter{
DB: r.DB,
Cfg: r.Cfg,

2
roomserver/internal/helpers/auth.go
View file

@ -56,7 +56,7 @@ func CheckForSoftFail(
// Then get the state entries for the current state snapshot.
// We'll use this to check if the event is allowed right now.
roomState := state.NewStateResolution(db, *roomInfo)
roomState := state.NewStateResolution(db, roomInfo)
authStateEntries, err = roomState.LoadStateAtSnapshot(ctx, roomInfo.StateSnapshotNID)
if err != nil {
return true, fmt.Errorf("roomState.LoadStateAtSnapshot: %w", err)

8
roomserver/internal/helpers/helpers.go
View file

@ -179,7 +179,7 @@ func GetMembershipsAtState(
return events, nil
}
func StateBeforeEvent(ctx context.Context, db storage.Database, info types.RoomInfo, eventNID types.EventNID) ([]types.StateEntry, error) {
func StateBeforeEvent(ctx context.Context, db storage.Database, info *types.RoomInfo, eventNID types.EventNID) ([]types.StateEntry, error) {
roomState := state.NewStateResolution(db, info)
// Lookup the event NID
eIDs, err := db.EventIDs(ctx, []types.EventNID{eventNID})
@ -223,7 +223,7 @@ func LoadStateEvents(
}
func CheckServerAllowedToSeeEvent(
ctx context.Context, db storage.Database, info types.RoomInfo, eventID string, serverName gomatrixserverlib.ServerName, isServerInRoom bool,
ctx context.Context, db storage.Database, info *types.RoomInfo, eventID string, serverName gomatrixserverlib.ServerName, isServerInRoom bool,
) (bool, error) {
roomState := state.NewStateResolution(db, info)
stateEntries, err := roomState.LoadStateAtEvent(ctx, eventID)
@ -279,7 +279,7 @@ func CheckServerAllowedToSeeEvent(
// TODO: Remove this when we have tests to assert correctness of this function
func ScanEventTree(
ctx context.Context, db storage.Database, info types.RoomInfo, front []string, visited map[string]bool, limit int,
ctx context.Context, db storage.Database, info *types.RoomInfo, front []string, visited map[string]bool, limit int,
serverName gomatrixserverlib.ServerName,
) ([]types.EventNID, error) {
var resultNIDs []types.EventNID
@ -387,7 +387,7 @@ func QueryLatestEventsAndState(
return nil
}
roomState := state.NewStateResolution(db, *roomInfo)
roomState := state.NewStateResolution(db, roomInfo)
response.RoomExists = true
response.RoomVersion = roomInfo.RoomVersion

63
roomserver/internal/input/input.go
View file

@ -19,12 +19,15 @@ import (
"context"
"encoding/json"
"sync"
"time"
"github.com/Arceliar/phony"
"github.com/getsentry/sentry-go"
fedapi "github.com/matrix-org/dendrite/federationapi/api"
"github.com/matrix-org/dendrite/internal/hooks"
"github.com/matrix-org/dendrite/roomserver/acls"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/internal/query"
"github.com/matrix-org/dendrite/roomserver/storage"
"github.com/matrix-org/dendrite/setup/jetstream"
"github.com/matrix-org/gomatrixserverlib"
@ -45,12 +48,28 @@ type Inputer struct {
JetStream nats.JetStreamContext
Durable nats.SubOpt
ServerName gomatrixserverlib.ServerName
FSAPI fedapi.FederationInternalAPI
KeyRing gomatrixserverlib.JSONVerifier
ACLs *acls.ServerACLs
InputRoomEventTopic string
OutputRoomEventTopic string
workers sync.Map // room ID -> *phony.Inbox
Queryer *query.Queryer
}
func (r *Inputer) workerForRoom(roomID string) *phony.Inbox {
inbox, _ := r.workers.LoadOrStore(roomID, &phony.Inbox{})
return inbox.(*phony.Inbox)
}
// eventsInProgress is an in-memory map to keep a track of which events we have
// queued up for processing. If we get a redelivery from NATS and we still have
// the queued up item then we won't do anything with the redelivered message. If
// we've restarted Dendrite and now this map is empty then it means that we will
// reload pending work from NATS.
var eventsInProgress sync.Map
// onMessage is called when a new event arrives in the roomserver input stream.
func (r *Inputer) Start() error {
_, err := r.JetStream.Subscribe(
@ -65,11 +84,23 @@ func (r *Inputer) Start() error {
_ = msg.Term()
return
}
inbox, _ := r.workers.LoadOrStore(roomID, &phony.Inbox{})
_ = msg.InProgress()
index := roomID + "\000" + inputRoomEvent.Event.EventID()
if _, ok := eventsInProgress.LoadOrStore(index, struct{}{}); ok {
// We're already waiting to deal with this event, so there's no
// point in queuing it up again. We've notified NATS that we're
// working on the message still, so that will have deferred the
// redelivery by a bit.
return
}
roomserverInputBackpressure.With(prometheus.Labels{"room_id": roomID}).Inc()
inbox.(*phony.Inbox).Act(nil, func() {
r.workerForRoom(roomID).Act(nil, func() {
_ = msg.InProgress() // resets the acknowledgement wait timer
defer eventsInProgress.Delete(index)
defer roomserverInputBackpressure.With(prometheus.Labels{"room_id": roomID}).Dec()
if err := r.processRoomEvent(context.TODO(), &inputRoomEvent); err != nil {
if err := r.processRoomEvent(context.Background(), &inputRoomEvent); err != nil {
sentry.CaptureException(err)
} else {
hooks.Run(hooks.KindNewEventPersisted, inputRoomEvent.Event)
@ -82,12 +113,14 @@ func (r *Inputer) Start() error {
// sure that we only acknowledge when we're happy we've done everything we
// can. This ensures we retry things when it makes sense to do so.
nats.ManualAck(),
// NATS will try to redeliver things to us automatically if we don't ack
// or nak them within a certain amount of time. This stops that from
// happening, so we don't end up doing a lot of unnecessary duplicate work.
nats.MaxDeliver(0),
// Use a durable named consumer.
r.Durable,
// If we've missed things in the stream, e.g. we restarted, then replay
// all of the queued messages that were waiting for us.
nats.DeliverAll(),
// Ensure that NATS doesn't try to resend us something that wasn't done
// within the period of time that we might still be processing it.
nats.AckWait(MaximumProcessingTime+(time.Second*10)),
)
return err
}
@ -122,11 +155,20 @@ func (r *Inputer) InputRoomEvents(
for _, e := range request.InputRoomEvents {
inputRoomEvent := e
roomID := inputRoomEvent.Event.RoomID()
inbox, _ := r.workers.LoadOrStore(roomID, &phony.Inbox{})
index := roomID + "\000" + inputRoomEvent.Event.EventID()
if _, ok := eventsInProgress.LoadOrStore(index, struct{}{}); ok {
// We're already waiting to deal with this event, so there's no
// point in queuing it up again. We've notified NATS that we're
// working on the message still, so that will have deferred the
// redelivery by a bit.
return
}
roomserverInputBackpressure.With(prometheus.Labels{"room_id": roomID}).Inc()
inbox.(*phony.Inbox).Act(nil, func() {
worker := r.workerForRoom(roomID)
worker.Act(nil, func() {
defer eventsInProgress.Delete(index)
defer roomserverInputBackpressure.With(prometheus.Labels{"room_id": roomID}).Dec()
err := r.processRoomEvent(context.TODO(), &inputRoomEvent)
err := r.processRoomEvent(ctx, &inputRoomEvent)
if err != nil {
sentry.CaptureException(err)
} else {
@ -142,6 +184,7 @@ func (r *Inputer) InputRoomEvents(
for i := 0; i < len(request.InputRoomEvents); i++ {
select {
case <-ctx.Done():
response.ErrMsg = context.DeadlineExceeded.Error()
return
case err := <-responses:
if err != nil {

274
roomserver/internal/input/input_events.go
View file

@ -22,6 +22,8 @@ import (
"fmt"
"time"
fedapi "github.com/matrix-org/dendrite/federationapi/api"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/eventutil"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/internal/helpers"
@ -37,6 +39,9 @@ func init() {
prometheus.MustRegister(processRoomEventDuration)
}
// TODO: Does this value make sense?
const MaximumProcessingTime = time.Minute * 2
var processRoomEventDuration = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "dendrite",
@ -60,9 +65,25 @@ var processRoomEventDuration = prometheus.NewHistogramVec(
// TODO: Break up function - we should probably do transaction ID checks before calling this.
// nolint:gocyclo
func (r *Inputer) processRoomEvent(
ctx context.Context,
inctx context.Context,
input *api.InputRoomEvent,
) (err error) {
select {
case <-inctx.Done():
// Before we do anything, make sure the context hasn't expired for this pending task.
// If it has then we'll give up straight away — it's probably a synchronous input
// request and the caller has already given up, but the inbox task was still queued.
return context.DeadlineExceeded
default:
}
// Wrap the context with a time limit. We'll allow no more than MaximumProcessingTime for
// everything that we need to do for this event, or it's possible that we could end up wedging
// the roomserver for a very long time.
var cancel context.CancelFunc
ctx, cancel := context.WithTimeout(inctx, MaximumProcessingTime)
defer cancel()
// Measure how long it takes to process this event.
started := time.Now()
defer func() {
@ -75,6 +96,11 @@ func (r *Inputer) processRoomEvent(
// Parse and validate the event JSON
headered := input.Event
event := headered.Unwrap()
logger := util.GetLogger(ctx).WithFields(logrus.Fields{
"event_id": event.EventID(),
"room_id": event.RoomID(),
"type": event.Type(),
})
// if we have already got this event then do not process it again, if the input kind is an outlier.
// Outliers contain no extra information which may warrant a re-processing.
@ -87,24 +113,67 @@ func (r *Inputer) processRoomEvent(
switch idFormat {
case gomatrixserverlib.EventIDFormatV1:
if bytes.Equal(event.EventReference().EventSHA256, evs[0].EventReference().EventSHA256) {
util.GetLogger(ctx).WithField("event_id", event.EventID()).Infof("Already processed event; ignoring")
logger.Debugf("Already processed event; ignoring")
return nil
}
default:
util.GetLogger(ctx).WithField("event_id", event.EventID()).Infof("Already processed event; ignoring")
logger.Debugf("Already processed event; ignoring")
return nil
}
}
}
}
// Check that the event passes authentication checks and work out
// the numeric IDs for the auth events.
missingRes := &api.QueryMissingAuthPrevEventsResponse{}
serverRes := &fedapi.QueryJoinedHostServerNamesInRoomResponse{}
if event.Type() != gomatrixserverlib.MRoomCreate || !event.StateKeyEquals("") {
missingReq := &api.QueryMissingAuthPrevEventsRequest{
RoomID: event.RoomID(),
AuthEventIDs: event.AuthEventIDs(),
PrevEventIDs: event.PrevEventIDs(),
}
if err = r.Queryer.QueryMissingAuthPrevEvents(ctx, missingReq, missingRes); err != nil {
return fmt.Errorf("r.Queryer.QueryMissingAuthPrevEvents: %w", err)
}
}
if len(missingRes.MissingAuthEventIDs) > 0 || len(missingRes.MissingPrevEventIDs) > 0 {
serverReq := &fedapi.QueryJoinedHostServerNamesInRoomRequest{
RoomID: event.RoomID(),
ExcludeSelf: true,
}
if err = r.FSAPI.QueryJoinedHostServerNamesInRoom(ctx, serverReq, serverRes); err != nil {
return fmt.Errorf("r.FSAPI.QueryJoinedHostServerNamesInRoom: %w", err)
}
}
if input.Origin != "" {
serverRes.ServerNames = append(serverRes.ServerNames, input.Origin)
}
// First of all, check that the auth events of the event are known.
// If they aren't then we will ask the federation API for them.
isRejected := false
authEventNIDs, rejectionErr := helpers.CheckAuthEvents(ctx, r.DB, headered, input.AuthEventIDs)
if rejectionErr != nil {
logrus.WithError(rejectionErr).WithField("event_id", event.EventID()).WithField("auth_event_ids", input.AuthEventIDs).Error("helpers.CheckAuthEvents failed for event, rejecting event")
authEvents := gomatrixserverlib.NewAuthEvents(nil)
knownEvents := map[string]*types.Event{}
if err = r.fetchAuthEvents(ctx, logger, headered, &authEvents, knownEvents, serverRes.ServerNames); err != nil {
return fmt.Errorf("r.checkForMissingAuthEvents: %w", err)
}
// Check if the event is allowed by its auth events. If it isn't then
// we consider the event to be "rejected" — it will still be persisted.
var rejectionErr error
if rejectionErr = gomatrixserverlib.Allowed(event, &authEvents); rejectionErr != nil {
isRejected = true
logger.WithError(rejectionErr).Warnf("Event %s rejected", event.EventID())
}
// Accumulate the auth event NIDs.
authEventIDs := event.AuthEventIDs()
authEventNIDs := make([]types.EventNID, 0, len(authEventIDs))
for _, authEventID := range authEventIDs {
if _, ok := knownEvents[authEventID]; !ok {
return fmt.Errorf("missing auth event %s", authEventID)
}
authEventNIDs = append(authEventNIDs, knownEvents[authEventID].EventNID)
}
var softfail bool
@ -113,11 +182,50 @@ func (r *Inputer) processRoomEvent(
// current room state.
softfail, err = helpers.CheckForSoftFail(ctx, r.DB, headered, input.StateEventIDs)
if err != nil {
logrus.WithFields(logrus.Fields{
"event_id": event.EventID(),
"type": event.Type(),
"room": event.RoomID(),
}).WithError(err).Info("Error authing soft-failed event")
logger.WithError(err).Info("Error authing soft-failed event")
}
}
// At this point we are checking whether we know all of the prev events, and
// if we know the state before the prev events. This is necessary before we
// try to do `calculateAndSetState` on the event later, otherwise it will fail
// with missing event NIDs. If there's anything missing then we'll go and fetch
// the prev events and state from the federation. Note that we only do this if
// we weren't already told what the state before the event should be — if the
// HasState option was set and a state set was provided (as is the case in a
// typical federated room join) then we won't bother trying to fetch prev events
// because we may not be allowed to see them and we have no choice but to trust
// the state event IDs provided to us in the join instead.
missingPrev := !input.HasState && len(missingRes.MissingPrevEventIDs) > 0
if missingPrev && input.Kind == api.KindNew {
// Don't do this for KindOld events, otherwise old events that we fetch
// to satisfy missing prev events/state will end up recursively calling
// processRoomEvent.
if len(serverRes.ServerNames) > 0 {
missingState := missingStateReq{
origin: input.Origin,
inputer: r,
queryer: r.Queryer,
db: r.DB,
federation: r.FSAPI,
keys: r.KeyRing,
roomsMu: internal.NewMutexByRoom(),
servers: map[gomatrixserverlib.ServerName]struct{}{},
hadEvents: map[string]bool{},
haveEvents: map[string]*gomatrixserverlib.HeaderedEvent{},
}
for _, serverName := range serverRes.ServerNames {
missingState.servers[serverName] = struct{}{}
}
if err = missingState.processEventWithMissingState(ctx, event, headered.RoomVersion); err != nil {
isRejected = true
rejectionErr = fmt.Errorf("missingState.processEventWithMissingState: %w", err)
} else {
missingPrev = false
}
} else {
isRejected = true
rejectionErr = fmt.Errorf("missing prev events and no other servers to ask")
}
}
@ -140,12 +248,7 @@ func (r *Inputer) processRoomEvent(
// doesn't have any associated state to store and we don't need to
// notify anyone about it.
if input.Kind == api.KindOutlier {
logrus.WithFields(logrus.Fields{
"event_id": event.EventID(),
"type": event.Type(),
"room": event.RoomID(),
"sender": event.Sender(),
}).Debug("Stored outlier")
logger.Debug("Stored outlier")
return nil
}
@ -157,24 +260,18 @@ func (r *Inputer) processRoomEvent(
return fmt.Errorf("r.DB.RoomInfo missing for room %s", event.RoomID())
}
if stateAtEvent.BeforeStateSnapshotNID == 0 {
if !missingPrev && stateAtEvent.BeforeStateSnapshotNID == 0 {
// We haven't calculated a state for this event yet.
// Lets calculate one.
err = r.calculateAndSetState(ctx, input, *roomInfo, &stateAtEvent, event, isRejected)
if err != nil && input.Kind != api.KindOld {
err = r.calculateAndSetState(ctx, input, roomInfo, &stateAtEvent, event, isRejected)
if err != nil {
return fmt.Errorf("r.calculateAndSetState: %w", err)
}
}
// We stop here if the event is rejected: We've stored it but won't update forward extremities or notify anyone about it.
if isRejected || softfail {
logrus.WithFields(logrus.Fields{
"event_id": event.EventID(),
"type": event.Type(),
"room": event.RoomID(),
"soft_fail": softfail,
"sender": event.Sender(),
}).Debug("Stored rejected event")
logger.WithError(rejectionErr).WithField("soft_fail", softfail).Debug("Stored rejected event")
return rejectionErr
}
@ -228,10 +325,127 @@ func (r *Inputer) processRoomEvent(
return nil
}
// fetchAuthEvents will check to see if any of the
// auth events specified by the given event are unknown. If they are
// then we will go off and request them from the federation and then
// store them in the database. By the time this function ends, either
// we've failed to retrieve the auth chain altogether (in which case
// an error is returned) or we've successfully retrieved them all and
// they are now in the database.
func (r *Inputer) fetchAuthEvents(
ctx context.Context,
logger *logrus.Entry,
event *gomatrixserverlib.HeaderedEvent,
auth *gomatrixserverlib.AuthEvents,
known map[string]*types.Event,
servers []gomatrixserverlib.ServerName,
) error {
unknown := map[string]struct{}{}
authEventIDs := event.AuthEventIDs()
if len(authEventIDs) == 0 {
return nil
}
for _, authEventID := range authEventIDs {
authEvents, err := r.DB.EventsFromIDs(ctx, []string{authEventID})
if err != nil || len(authEvents) == 0 || authEvents[0].Event == nil {
unknown[authEventID] = struct{}{}
continue
}
ev := authEvents[0]
known[authEventID] = &ev // don't take the pointer of the iterated event
if err = auth.AddEvent(ev.Event); err != nil {
return fmt.Errorf("auth.AddEvent: %w", err)
}
}
// If there are no missing auth events then there is nothing more
// to do — we've loaded everything that we need.
if len(unknown) == 0 {
return nil
}
var err error
var res gomatrixserverlib.RespEventAuth
var found bool
for _, serverName := range servers {
// Request the entire auth chain for the event in question. This should
// contain all of the auth events — including ones that we already know —
// so we'll need to filter through those in the next section.
res, err = r.FSAPI.GetEventAuth(ctx, serverName, event.RoomVersion, event.RoomID(), event.EventID())
if err != nil {
logger.WithError(err).Warnf("Failed to get event auth from federation for %q: %s", event.EventID(), err)
continue
}
found = true
break
}
if !found {
return fmt.Errorf("no servers provided event auth for event ID %q, tried servers %v", event.EventID(), servers)
}
for _, authEvent := range gomatrixserverlib.ReverseTopologicalOrdering(
res.AuthEvents,
gomatrixserverlib.TopologicalOrderByAuthEvents,
) {
// If we already know about this event from the database then we don't
// need to store it again or do anything further with it, so just skip
// over it rather than wasting cycles.
if ev, ok := known[authEvent.EventID()]; ok && ev != nil {
continue
}
// Check the signatures of the event.
// TODO: It really makes sense for the federation API to be doing this,
// because then it can attempt another server if one serves up an event
// with an invalid signature. For now this will do.
if err := authEvent.VerifyEventSignatures(ctx, r.FSAPI.KeyRing()); err != nil {
return fmt.Errorf("event.VerifyEventSignatures: %w", err)
}
// In order to store the new auth event, we need to know its auth chain
// as NIDs for the `auth_event_nids` column. Let's see if we can find those.
authEventNIDs := make([]types.EventNID, 0, len(authEvent.AuthEventIDs()))
for _, eventID := range authEvent.AuthEventIDs() {
knownEvent, ok := known[eventID]
if !ok {
return fmt.Errorf("missing auth event %s for %s", eventID, authEvent.EventID())
}
authEventNIDs = append(authEventNIDs, knownEvent.EventNID)
}
// Let's take a note of the fact that we now know about this event.
if err := auth.AddEvent(authEvent); err != nil {
return fmt.Errorf("auth.AddEvent: %w", err)
}
// Check if the auth event should be rejected.
isRejected := false
if err := gomatrixserverlib.Allowed(authEvent, auth); err != nil {
isRejected = true
logger.WithError(err).Warnf("Auth event %s rejected", authEvent.EventID())
}
// Finally, store the event in the database.
eventNID, _, _, _, _, err := r.DB.StoreEvent(ctx, authEvent, authEventNIDs, isRejected)
if err != nil {
return fmt.Errorf("r.DB.StoreEvent: %w", err)
}
// Now we know about this event, it was stored and the signatures were OK.
known[authEvent.EventID()] = &types.Event{
EventNID: eventNID,
Event: authEvent,
}
}
return nil
}
func (r *Inputer) calculateAndSetState(
ctx context.Context,
input *api.InputRoomEvent,
roomInfo types.RoomInfo,
roomInfo *types.RoomInfo,
stateAtEvent *types.StateAtEvent,
event *gomatrixserverlib.Event,
isRejected bool,

2
roomserver/internal/input/input_latest_events.go
View file

@ -199,7 +199,7 @@ func (u *latestEventsUpdater) doUpdateLatestEvents() error {
func (u *latestEventsUpdater) latestState() error {
var err error
roomState := state.NewStateResolution(u.api.DB, *u.roomInfo)
roomState := state.NewStateResolution(u.api.DB, u.roomInfo)
// Work out if the state at the extremities has actually changed
// or not. If they haven't then we won't bother doing all of the

765
roomserver/internal/input/input_missing.go Normal file
View file

@ -0,0 +1,765 @@
package input
import (
"context"
"errors"
"fmt"
"sync"
"time"
fedapi "github.com/matrix-org/dendrite/federationapi/api"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/internal/query"
"github.com/matrix-org/dendrite/roomserver/storage"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
"github.com/sirupsen/logrus"
)
type missingStateReq struct {
origin gomatrixserverlib.ServerName
db storage.Database
inputer *Inputer
queryer *query.Queryer
keys gomatrixserverlib.JSONVerifier
federation fedapi.FederationInternalAPI
roomsMu *internal.MutexByRoom
servers map[gomatrixserverlib.ServerName]struct{}
hadEvents map[string]bool
hadEventsMutex sync.Mutex
haveEvents map[string]*gomatrixserverlib.HeaderedEvent
haveEventsMutex sync.Mutex
}
// processEventWithMissingState is the entrypoint for a missingStateReq
// request, as called from processRoomEvent.
func (t *missingStateReq) processEventWithMissingState(
ctx context.Context, e *gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion,
) error {
// We are missing the previous events for this events.
// This means that there is a gap in our view of the history of the
// room. There two ways that we can handle such a gap:
// 1) We can fill in the gap using /get_missing_events
// 2) We can leave the gap and request the state of the room at
// this event from the remote server using either /state_ids
// or /state.
// Synapse will attempt to do 1 and if that fails or if the gap is
// too large then it will attempt 2.
// Synapse will use /state_ids if possible since usually the state
// is largely unchanged and it is more efficient to fetch a list of
// event ids and then use /event to fetch the individual events.
// However not all version of synapse support /state_ids so you may
// need to fallback to /state.
logger := util.GetLogger(ctx).WithFields(map[string]interface{}{
"txn_event": e.EventID(),
"room_id": e.RoomID(),
"txn_prev_events": e.PrevEventIDs(),
})
// Attempt to fill in the gap using /get_missing_events
// This will either:
// - fill in the gap completely then process event `e` returning no backwards extremity
// - fail to fill in the gap and tell us to terminate the transaction err=not nil
// - fail to fill in the gap and tell us to fetch state at the new backwards extremity, and to not terminate the transaction
newEvents, isGapFilled, err := t.getMissingEvents(ctx, e, roomVersion)
if err != nil {
return fmt.Errorf("t.getMissingEvents: %w", err)
}
if len(newEvents) == 0 {
return fmt.Errorf("expected to find missing events but didn't")
}
if isGapFilled {
logger.Infof("gap filled by /get_missing_events, injecting %d new events", len(newEvents))
// we can just inject all the newEvents as new as we may have only missed 1 or 2 events and have filled
// in the gap in the DAG
for _, newEvent := range newEvents {
err = t.inputer.processRoomEvent(ctx, &api.InputRoomEvent{
Kind: api.KindNew,
Event: newEvent.Headered(roomVersion),
Origin: t.origin,
SendAsServer: api.DoNotSendToOtherServers,
})
if err != nil {
return fmt.Errorf("t.inputer.processRoomEvent: %w", err)
}
}
return nil
}
backwardsExtremity := newEvents[0]
newEvents = newEvents[1:]
type respState struct {
// A snapshot is considered trustworthy if it came from our own roomserver.
// That's because the state will have been through state resolution once
// already in QueryStateAfterEvent.
trustworthy bool
*gomatrixserverlib.RespState
}
// at this point we know we're going to have a gap: we need to work out the room state at the new backwards extremity.
// Therefore, we cannot just query /state_ids with this event to get the state before. Instead, we need to query
// the state AFTER all the prev_events for this event, then apply state resolution to that to get the state before the event.
var states []*respState
for _, prevEventID := range backwardsExtremity.PrevEventIDs() {
// Look up what the state is after the backward extremity. This will either
// come from the roomserver, if we know all the required events, or it will
// come from a remote server via /state_ids if not.
prevState, trustworthy, lerr := t.lookupStateAfterEvent(ctx, roomVersion, backwardsExtremity.RoomID(), prevEventID)
if lerr != nil {
logger.WithError(lerr).Errorf("Failed to lookup state after prev_event: %s", prevEventID)
return lerr
}
// Append the state onto the collected state. We'll run this through the
// state resolution next.
states = append(states, &respState{trustworthy, prevState})
}
// Now that we have collected all of the state from the prev_events, we'll
// run the state through the appropriate state resolution algorithm for the
// room if needed. This does a couple of things:
// 1. Ensures that the state is deduplicated fully for each state-key tuple
// 2. Ensures that we pick the latest events from both sets, in the case that
// one of the prev_events is quite a bit older than the others
resolvedState := &gomatrixserverlib.RespState{}
switch len(states) {
case 0:
extremityIsCreate := backwardsExtremity.Type() == gomatrixserverlib.MRoomCreate && backwardsExtremity.StateKeyEquals("")
if !extremityIsCreate {
// There are no previous states and this isn't the beginning of the
// room - this is an error condition!
logger.Errorf("Failed to lookup any state after prev_events")
return fmt.Errorf("expected %d states but got %d", len(backwardsExtremity.PrevEventIDs()), len(states))
}
case 1:
// There's only one previous state - if it's trustworthy (came from a
// local state snapshot which will already have been through state res),
// use it as-is. There's no point in resolving it again.
if states[0].trustworthy {
resolvedState = states[0].RespState
break
}
// Otherwise, if it isn't trustworthy (came from federation), run it through
// state resolution anyway for safety, in case there are duplicates.
fallthrough
default:
respStates := make([]*gomatrixserverlib.RespState, len(states))
for i := range states {
respStates[i] = states[i].RespState
}
// There's more than one previous state - run them all through state res
t.roomsMu.Lock(e.RoomID())
resolvedState, err = t.resolveStatesAndCheck(ctx, roomVersion, respStates, backwardsExtremity)
t.roomsMu.Unlock(e.RoomID())
if err != nil {
logger.WithError(err).Errorf("Failed to resolve state conflicts for event %s", backwardsExtremity.EventID())
return err
}
}
hadEvents := map[string]bool{}
t.hadEventsMutex.Lock()
for k, v := range t.hadEvents {
hadEvents[k] = v
}
t.hadEventsMutex.Unlock()
// Send outliers first so we can send the new backwards extremity without causing errors
outliers, err := resolvedState.Events()
if err != nil {
return err
}
var outlierRoomEvents []api.InputRoomEvent
for _, outlier := range outliers {
if hadEvents[outlier.EventID()] {
continue
}
outlierRoomEvents = append(outlierRoomEvents, api.InputRoomEvent{
Kind: api.KindOutlier,
Event: outlier.Headered(roomVersion),
Origin: t.origin,
})
}
// TODO: we could do this concurrently?
for _, ire := range outlierRoomEvents {
if err = t.inputer.processRoomEvent(ctx, &ire); err != nil {
return fmt.Errorf("t.inputer.processRoomEvent[outlier]: %w", err)
}
}
// Now send the backward extremity into the roomserver with the
// newly resolved state. This marks the "oldest" point in the backfill and
// sets the baseline state for any new events after this.
stateIDs := make([]string, 0, len(resolvedState.StateEvents))
for _, event := range resolvedState.StateEvents {
stateIDs = append(stateIDs, event.EventID())
}
err = t.inputer.processRoomEvent(ctx, &api.InputRoomEvent{
Kind: api.KindOld,
Event: backwardsExtremity.Headered(roomVersion),
Origin: t.origin,
HasState: true,
StateEventIDs: stateIDs,
SendAsServer: api.DoNotSendToOtherServers,
})
if err != nil {
return fmt.Errorf("t.inputer.processRoomEvent: %w", err)
}
// Then send all of the newer backfilled events, of which will all be newer
// than the backward extremity, into the roomserver without state. This way
// they will automatically fast-forward based on the room state at the
// extremity in the last step.
for _, newEvent := range newEvents {
err = t.inputer.processRoomEvent(ctx, &api.InputRoomEvent{
Kind: api.KindOld,
Event: newEvent.Headered(roomVersion),
Origin: t.origin,
SendAsServer: api.DoNotSendToOtherServers,
})
if err != nil {
return fmt.Errorf("t.inputer.processRoomEvent: %w", err)
}
}
return nil
}
// lookupStateAfterEvent returns the room state after `eventID`, which is the state before eventID with the state of `eventID` (if it's a state event)
// added into the mix.
func (t *missingStateReq) lookupStateAfterEvent(ctx context.Context, roomVersion gomatrixserverlib.RoomVersion, roomID, eventID string) (*gomatrixserverlib.RespState, bool, error) {
// try doing all this locally before we resort to querying federation
respState := t.lookupStateAfterEventLocally(ctx, roomID, eventID)
if respState != nil {
return respState, true, nil
}
respState, err := t.lookupStateBeforeEvent(ctx, roomVersion, roomID, eventID)
if err != nil {
return nil, false, fmt.Errorf("t.lookupStateBeforeEvent: %w", err)
}
// fetch the event we're missing and add it to the pile
h, err := t.lookupEvent(ctx, roomVersion, roomID, eventID, false)
switch err.(type) {
case verifySigError:
return respState, false, nil
case nil:
// do nothing
default:
return nil, false, fmt.Errorf("t.lookupEvent: %w", err)
}
h = t.cacheAndReturn(h)
if h.StateKey() != nil {
addedToState := false
for i := range respState.StateEvents {
se := respState.StateEvents[i]
if se.Type() == h.Type() && se.StateKeyEquals(*h.StateKey()) {
respState.StateEvents[i] = h.Unwrap()
addedToState = true
break
}
}
if !addedToState {
respState.StateEvents = append(respState.StateEvents, h.Unwrap())
}
}
return respState, false, nil
}
func (t *missingStateReq) cacheAndReturn(ev *gomatrixserverlib.HeaderedEvent) *gomatrixserverlib.HeaderedEvent {
t.haveEventsMutex.Lock()
defer t.haveEventsMutex.Unlock()
if cached, exists := t.haveEvents[ev.EventID()]; exists {
return cached
}
t.haveEvents[ev.EventID()] = ev
return ev
}
func (t *missingStateReq) lookupStateAfterEventLocally(ctx context.Context, roomID, eventID string) *gomatrixserverlib.RespState {
var res api.QueryStateAfterEventsResponse
err := t.queryer.QueryStateAfterEvents(ctx, &api.QueryStateAfterEventsRequest{
RoomID: roomID,
PrevEventIDs: []string{eventID},
}, &res)
if err != nil || !res.PrevEventsExist {
util.GetLogger(ctx).WithField("room_id", roomID).WithError(err).Warnf("failed to query state after %s locally, prev exists=%v", eventID, res.PrevEventsExist)
return nil
}
stateEvents := make([]*gomatrixserverlib.HeaderedEvent, len(res.StateEvents))
for i, ev := range res.StateEvents {
// set the event from the haveEvents cache - this means we will share pointers with other prev_event branches for this
// processEvent request, which is better for memory.
stateEvents[i] = t.cacheAndReturn(ev)
t.hadEvent(ev.EventID())
}
// we should never access res.StateEvents again so we delete it here to make GC faster
res.StateEvents = nil
var authEvents []*gomatrixserverlib.Event
missingAuthEvents := map[string]bool{}
for _, ev := range stateEvents {
t.haveEventsMutex.Lock()
for _, ae := range ev.AuthEventIDs() {
if aev, ok := t.haveEvents[ae]; ok {
authEvents = append(authEvents, aev.Unwrap())
} else {
missingAuthEvents[ae] = true
}
}
t.haveEventsMutex.Unlock()
}
// QueryStateAfterEvents does not return the auth events, so fetch them now. We know the roomserver has them else it wouldn't
// have stored the event.
if len(missingAuthEvents) > 0 {
var missingEventList []string
for evID := range missingAuthEvents {
missingEventList = append(missingEventList, evID)
}
queryReq := api.QueryEventsByIDRequest{
EventIDs: missingEventList,
}
util.GetLogger(ctx).WithField("count", len(missingEventList)).Infof("Fetching missing auth events")
var queryRes api.QueryEventsByIDResponse
if err = t.queryer.QueryEventsByID(ctx, &queryReq, &queryRes); err != nil {
return nil
}
for i, ev := range queryRes.Events {
authEvents = append(authEvents, t.cacheAndReturn(queryRes.Events[i]).Unwrap())
t.hadEvent(ev.EventID())
}
queryRes.Events = nil
}
return &gomatrixserverlib.RespState{
StateEvents: gomatrixserverlib.UnwrapEventHeaders(stateEvents),
AuthEvents: authEvents,
}
}
// lookuptStateBeforeEvent returns the room state before the event e, which is just /state_ids and/or /state depending on what
// the server supports.
func (t *missingStateReq) lookupStateBeforeEvent(ctx context.Context, roomVersion gomatrixserverlib.RoomVersion, roomID, eventID string) (
*gomatrixserverlib.RespState, error) {
// Attempt to fetch the missing state using /state_ids and /events
return t.lookupMissingStateViaStateIDs(ctx, roomID, eventID, roomVersion)
}
func (t *missingStateReq) resolveStatesAndCheck(ctx context.Context, roomVersion gomatrixserverlib.RoomVersion, states []*gomatrixserverlib.RespState, backwardsExtremity *gomatrixserverlib.Event) (*gomatrixserverlib.RespState, error) {
var authEventList []*gomatrixserverlib.Event
var stateEventList []*gomatrixserverlib.Event
for _, state := range states {
authEventList = append(authEventList, state.AuthEvents...)
stateEventList = append(stateEventList, state.StateEvents...)
}
resolvedStateEvents, err := gomatrixserverlib.ResolveConflicts(roomVersion, stateEventList, authEventList)
if err != nil {
return nil, err
}
// apply the current event
retryAllowedState:
if err = checkAllowedByState(backwardsExtremity, resolvedStateEvents); err != nil {
switch missing := err.(type) {
case gomatrixserverlib.MissingAuthEventError:
h, err2 := t.lookupEvent(ctx, roomVersion, backwardsExtremity.RoomID(), missing.AuthEventID, true)
switch err2.(type) {
case verifySigError:
return &gomatrixserverlib.RespState{
AuthEvents: authEventList,
StateEvents: resolvedStateEvents,
}, nil
case nil:
// do nothing
default:
return nil, fmt.Errorf("missing auth event %s and failed to look it up: %w", missing.AuthEventID, err2)
}
util.GetLogger(ctx).Infof("fetched event %s", missing.AuthEventID)
resolvedStateEvents = append(resolvedStateEvents, h.Unwrap())
goto retryAllowedState
default:
}
return nil, err
}
return &gomatrixserverlib.RespState{
AuthEvents: authEventList,
StateEvents: resolvedStateEvents,
}, nil
}
// get missing events for `e`. If `isGapFilled`=true then `newEvents` contains all the events to inject,
// without `e`. If `isGapFilled=false` then `newEvents` contains the response to /get_missing_events
func (t *missingStateReq) getMissingEvents(ctx context.Context, e *gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion) (newEvents []*gomatrixserverlib.Event, isGapFilled bool, err error) {
logger := util.GetLogger(ctx).WithField("event_id", e.EventID()).WithField("room_id", e.RoomID())
needed := gomatrixserverlib.StateNeededForAuth([]*gomatrixserverlib.Event{e})
// query latest events (our trusted forward extremities)
req := api.QueryLatestEventsAndStateRequest{
RoomID: e.RoomID(),
StateToFetch: needed.Tuples(),
}
var res api.QueryLatestEventsAndStateResponse
if err = t.queryer.QueryLatestEventsAndState(ctx, &req, &res); err != nil {
logger.WithError(err).Warn("Failed to query latest events")
return nil, false, err
}
latestEvents := make([]string, len(res.LatestEvents))
for i, ev := range res.LatestEvents {
latestEvents[i] = res.LatestEvents[i].EventID
t.hadEvent(ev.EventID)
}
var missingResp *gomatrixserverlib.RespMissingEvents
for server := range t.servers {
var m gomatrixserverlib.RespMissingEvents
if m, err = t.federation.LookupMissingEvents(ctx, server, e.RoomID(), gomatrixserverlib.MissingEvents{
Limit: 20,
// The latest event IDs that the sender already has. These are skipped when retrieving the previous events of latest_events.
EarliestEvents: latestEvents,
// The event IDs to retrieve the previous events for.
LatestEvents: []string{e.EventID()},
}, roomVersion); err == nil {
missingResp = &m
break
} else {
logger.WithError(err).Errorf("%s pushed us an event but %q did not respond to /get_missing_events", t.origin, server)
if errors.Is(err, context.DeadlineExceeded) {
select {
case <-ctx.Done(): // the parent request context timed out
return nil, false, context.DeadlineExceeded
default: // this request exceed its own timeout
continue
}
}
}
}
if missingResp == nil {
logger.WithError(err).Errorf(
"%s pushed us an event but %d server(s) couldn't give us details about prev_events via /get_missing_events - dropping this event until it can",
t.origin, len(t.servers),
)
return nil, false, missingPrevEventsError{
eventID: e.EventID(),
err: err,
}
}
// Make sure events from the missingResp are using the cache - missing events
// will be added and duplicates will be removed.
logger.Infof("get_missing_events returned %d events", len(missingResp.Events))
for i, ev := range missingResp.Events {
missingResp.Events[i] = t.cacheAndReturn(ev.Headered(roomVersion)).Unwrap()
}
// topologically sort and sanity check that we are making forward progress
newEvents = gomatrixserverlib.ReverseTopologicalOrdering(missingResp.Events, gomatrixserverlib.TopologicalOrderByPrevEvents)
shouldHaveSomeEventIDs := e.PrevEventIDs()
hasPrevEvent := false
Event:
for _, pe := range shouldHaveSomeEventIDs {
for _, ev := range newEvents {
if ev.EventID() == pe {
hasPrevEvent = true
break Event
}
}
}
if !hasPrevEvent {
err = fmt.Errorf("called /get_missing_events but server %s didn't return any prev_events with IDs %v", t.origin, shouldHaveSomeEventIDs)
logger.WithError(err).Errorf(
"%s pushed us an event but couldn't give us details about prev_events via /get_missing_events - dropping this event until it can",
t.origin,
)
return nil, false, missingPrevEventsError{
eventID: e.EventID(),
err: err,
}
}
if len(newEvents) == 0 {
return nil, false, nil // TODO: error instead?
}
// now check if we can fill the gap. Look to see if we have state snapshot IDs for the earliest event
earliestNewEvent := newEvents[0]
if state, err := t.db.StateAtEventIDs(ctx, []string{earliestNewEvent.EventID()}); err != nil || len(state) == 0 {
if earliestNewEvent.Type() == gomatrixserverlib.MRoomCreate && earliestNewEvent.StateKeyEquals("") {
// we got to the beginning of the room so there will be no state! It's all good we can process this
return newEvents, true, nil
}
// we don't have the state at this earliest event from /g_m_e so we won't have state for later events either
return newEvents, false, nil
}
// StateAtEventIDs returned some kind of state for the earliest event so we can fill in the gap!
return newEvents, true, nil
}
func (t *missingStateReq) lookupMissingStateViaState(ctx context.Context, roomID, eventID string, roomVersion gomatrixserverlib.RoomVersion) (
respState *gomatrixserverlib.RespState, err error) {
state, err := t.federation.LookupState(ctx, t.origin, roomID, eventID, roomVersion)
if err != nil {
return nil, err
}
// Check that the returned state is valid.
if err := state.Check(ctx, t.keys, nil); err != nil {
return nil, err
}
// Cache the results of this state lookup and deduplicate anything we already
// have in the cache, freeing up memory.
for i, ev := range state.AuthEvents {
state.AuthEvents[i] = t.cacheAndReturn(ev.Headered(roomVersion)).Unwrap()
}
for i, ev := range state.StateEvents {
state.StateEvents[i] = t.cacheAndReturn(ev.Headered(roomVersion)).Unwrap()
}
return &state, nil
}
func (t *missingStateReq) lookupMissingStateViaStateIDs(ctx context.Context, roomID, eventID string, roomVersion gomatrixserverlib.RoomVersion) (
*gomatrixserverlib.RespState, error) {
util.GetLogger(ctx).WithField("room_id", roomID).Infof("lookupMissingStateViaStateIDs %s", eventID)
// fetch the state event IDs at the time of the event
stateIDs, err := t.federation.LookupStateIDs(ctx, t.origin, roomID, eventID)
if err != nil {
return nil, err
}
// work out which auth/state IDs are missing
wantIDs := append(stateIDs.StateEventIDs, stateIDs.AuthEventIDs...)
missing := make(map[string]bool)
var missingEventList []string
t.haveEventsMutex.Lock()
for _, sid := range wantIDs {
if _, ok := t.haveEvents[sid]; !ok {
if !missing[sid] {
missing[sid] = true
missingEventList = append(missingEventList, sid)
}
}
}
t.haveEventsMutex.Unlock()
// fetch as many as we can from the roomserver
queryReq := api.QueryEventsByIDRequest{
EventIDs: missingEventList,
}
var queryRes api.QueryEventsByIDResponse
if err = t.queryer.QueryEventsByID(ctx, &queryReq, &queryRes); err != nil {
return nil, err
}
for i, ev := range queryRes.Events {
queryRes.Events[i] = t.cacheAndReturn(queryRes.Events[i])
t.hadEvent(ev.EventID())
evID := queryRes.Events[i].EventID()
if missing[evID] {
delete(missing, evID)
}
}
queryRes.Events = nil // allow it to be GCed
concurrentRequests := 8
missingCount := len(missing)
util.GetLogger(ctx).WithField("room_id", roomID).WithField("event_id", eventID).Infof("lookupMissingStateViaStateIDs missing %d/%d events", missingCount, len(wantIDs))
// If over 50% of the auth/state events from /state_ids are missing
// then we'll just call /state instead, otherwise we'll just end up
// hammering the remote side with /event requests unnecessarily.
if missingCount > concurrentRequests && missingCount > len(wantIDs)/2 {
util.GetLogger(ctx).WithFields(logrus.Fields{
"missing": missingCount,
"event_id": eventID,
"room_id": roomID,
"total_state": len(stateIDs.StateEventIDs),
"total_auth_events": len(stateIDs.AuthEventIDs),
}).Info("Fetching all state at event")
return t.lookupMissingStateViaState(ctx, roomID, eventID, roomVersion)
}
if missingCount > 0 {
util.GetLogger(ctx).WithFields(logrus.Fields{
"missing": missingCount,
"event_id": eventID,
"room_id": roomID,
"total_state": len(stateIDs.StateEventIDs),
"total_auth_events": len(stateIDs.AuthEventIDs),
"concurrent_requests": concurrentRequests,
}).Info("Fetching missing state at event")
// Create a queue containing all of the missing event IDs that we want
// to retrieve.
pending := make(chan string, missingCount)
for missingEventID := range missing {
pending <- missingEventID
}
close(pending)
// Define how many workers we should start to do this.
if missingCount < concurrentRequests {
concurrentRequests = missingCount
}
// Create the wait group.
var fetchgroup sync.WaitGroup
fetchgroup.Add(concurrentRequests)
// This is the only place where we'll write to t.haveEvents from
// multiple goroutines, and everywhere else is blocked on this
// synchronous function anyway.
var haveEventsMutex sync.Mutex
// Define what we'll do in order to fetch the missing event ID.
fetch := func(missingEventID string) {
var h *gomatrixserverlib.HeaderedEvent
h, err = t.lookupEvent(ctx, roomVersion, roomID, missingEventID, false)
switch err.(type) {
case verifySigError:
return
case nil:
break
default:
util.GetLogger(ctx).WithFields(logrus.Fields{
"event_id": missingEventID,
"room_id": roomID,
}).Info("Failed to fetch missing event")
return
}
haveEventsMutex.Lock()
t.cacheAndReturn(h)
haveEventsMutex.Unlock()
}
// Create the worker.
worker := func(ch <-chan string) {
defer fetchgroup.Done()
for missingEventID := range ch {
fetch(missingEventID)
}
}
// Start the workers.
for i := 0; i < concurrentRequests; i++ {
go worker(pending)
}
// Wait for the workers to finish.
fetchgroup.Wait()
}
resp, err := t.createRespStateFromStateIDs(stateIDs)
return resp, err
}
func (t *missingStateReq) createRespStateFromStateIDs(stateIDs gomatrixserverlib.RespStateIDs) (
*gomatrixserverlib.RespState, error) { // nolint:unparam
t.haveEventsMutex.Lock()
defer t.haveEventsMutex.Unlock()
// create a RespState response using the response to /state_ids as a guide
respState := gomatrixserverlib.RespState{}
for i := range stateIDs.StateEventIDs {
ev, ok := t.haveEvents[stateIDs.StateEventIDs[i]]
if !ok {
logrus.Warnf("Missing state event in createRespStateFromStateIDs: %s", stateIDs.StateEventIDs[i])
continue
}
respState.StateEvents = append(respState.StateEvents, ev.Unwrap())
}
for i := range stateIDs.AuthEventIDs {
ev, ok := t.haveEvents[stateIDs.AuthEventIDs[i]]
if !ok {
logrus.Warnf("Missing auth event in createRespStateFromStateIDs: %s", stateIDs.AuthEventIDs[i])
continue
}
respState.AuthEvents = append(respState.AuthEvents, ev.Unwrap())
}
// We purposefully do not do auth checks on the returned events, as they will still
// be processed in the exact same way, just as a 'rejected' event
// TODO: Add a field to HeaderedEvent to indicate if the event is rejected.
return &respState, nil
}
func (t *missingStateReq) lookupEvent(ctx context.Context, roomVersion gomatrixserverlib.RoomVersion, _, missingEventID string, localFirst bool) (*gomatrixserverlib.HeaderedEvent, error) {
if localFirst {
// fetch from the roomserver
queryReq := api.QueryEventsByIDRequest{
EventIDs: []string{missingEventID},
}
var queryRes api.QueryEventsByIDResponse
if err := t.queryer.QueryEventsByID(ctx, &queryReq, &queryRes); err != nil {
util.GetLogger(ctx).Warnf("Failed to query roomserver for missing event %s: %s - falling back to remote", missingEventID, err)
} else if len(queryRes.Events) == 1 {
return queryRes.Events[0], nil
}
}
var event *gomatrixserverlib.Event
found := false
for serverName := range t.servers {
reqctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
txn, err := t.federation.GetEvent(reqctx, serverName, missingEventID)
if err != nil || len(txn.PDUs) == 0 {
util.GetLogger(ctx).WithError(err).WithField("event_id", missingEventID).Warn("Failed to get missing /event for event ID")
if errors.Is(err, context.DeadlineExceeded) {
select {
case <-reqctx.Done(): // this server took too long
continue
case <-ctx.Done(): // the input request timed out
return nil, context.DeadlineExceeded
}
}
continue
}
event, err = gomatrixserverlib.NewEventFromUntrustedJSON(txn.PDUs[0], roomVersion)
if err != nil {
util.GetLogger(ctx).WithError(err).WithField("event_id", missingEventID).Warnf("Transaction: Failed to parse event JSON of event")
continue
}
found = true
break
}
if !found {
util.GetLogger(ctx).WithField("event_id", missingEventID).Warnf("Failed to get missing /event for event ID from %d server(s)", len(t.servers))
return nil, fmt.Errorf("wasn't able to find event via %d server(s)", len(t.servers))
}
if err := event.VerifyEventSignatures(ctx, t.keys); err != nil {
util.GetLogger(ctx).WithError(err).Warnf("Transaction: Couldn't validate signature of event %q", event.EventID())
return nil, verifySigError{event.EventID(), err}
}
return t.cacheAndReturn(event.Headered(roomVersion)), nil
}
func checkAllowedByState(e *gomatrixserverlib.Event, stateEvents []*gomatrixserverlib.Event) error {
authUsingState := gomatrixserverlib.NewAuthEvents(nil)
for i := range stateEvents {
err := authUsingState.AddEvent(stateEvents[i])
if err != nil {
return err
}
}
return gomatrixserverlib.Allowed(e, &authUsingState)
}
func (t *missingStateReq) hadEvent(eventID string) {
t.hadEventsMutex.Lock()
defer t.hadEventsMutex.Unlock()
t.hadEvents[eventID] = true
}
type verifySigError struct {
eventID string
err error
}
type missingPrevEventsError struct {
eventID string
err error
}
func (e verifySigError) Error() string {
return fmt.Sprintf("unable to verify signature of event %q: %s", e.eventID, e.err)
}
func (e missingPrevEventsError) Error() string {
return fmt.Sprintf("unable to get prev_events for event %q: %s", e.eventID, e.err)
}

4
roomserver/internal/perform/perform_backfill.go
View file

@ -77,7 +77,7 @@ func (r *Backfiller) PerformBackfill(
}
// Scan the event tree for events to send back.
resultNIDs, err := helpers.ScanEventTree(ctx, r.DB, *info, front, visited, request.Limit, request.ServerName)
resultNIDs, err := helpers.ScanEventTree(ctx, r.DB, info, front, visited, request.Limit, request.ServerName)
if err != nil {
return err
}
@ -418,7 +418,7 @@ FindSuccessor:
return nil
}
stateEntries, err := helpers.StateBeforeEvent(ctx, b.db, *info, NIDs[eventID])
stateEntries, err := helpers.StateBeforeEvent(ctx, b.db, info, NIDs[eventID])
if err != nil {
logrus.WithField("event_id", eventID).WithError(err).Error("ServersAtEvent: failed to load state before event")
return nil

2
roomserver/internal/perform/perform_inbound_peek.go
View file

@ -79,7 +79,7 @@ func (r *InboundPeeker) PerformInboundPeek(
response.LatestEvent = sortedLatestEvents[0].Headered(info.RoomVersion)
// XXX: do we actually need to do a state resolution here?
roomState := state.NewStateResolution(r.DB, *info)
roomState := state.NewStateResolution(r.DB, info)
var stateEntries []types.StateEntry
stateEntries, err = roomState.LoadStateAtSnapshot(

4
roomserver/internal/perform/perform_invite.go
View file

@ -172,7 +172,7 @@ func (r *Inviter) PerformInvite(
{
Kind: api.KindNew,
Event: event,
AuthEventIDs: event.AuthEventIDs(),
Origin: event.Origin(),
SendAsServer: req.SendAsServer,
},
},
@ -231,7 +231,7 @@ func buildInviteStrippedState(
StateKey: "",
})
}
roomState := state.NewStateResolution(db, *info)
roomState := state.NewStateResolution(db, info)
stateEntries, err := roomState.LoadStateAtSnapshotForStringTuples(
ctx, info.StateSnapshotNID, stateWanted,
)

1
roomserver/internal/perform/perform_join.go
View file

@ -271,7 +271,6 @@ func (r *Joiner) performJoinRoomByID(
{
Kind: rsAPI.KindNew,
Event: event.Headered(buildRes.RoomVersion),
AuthEventIDs: event.AuthEventIDs(),
SendAsServer: string(r.Cfg.Matrix.ServerName),
},
},

2
roomserver/internal/perform/perform_leave.go
View file

@ -139,7 +139,7 @@ func (r *Leaver) performLeaveRoomByID(
{
Kind: api.KindNew,
Event: event.Headered(buildRes.RoomVersion),
AuthEventIDs: event.AuthEventIDs(),
Origin: event.Origin(),
SendAsServer: string(r.Cfg.Matrix.ServerName),
},
},

12
roomserver/internal/query/query.go
View file

@ -63,7 +63,7 @@ func (r *Queryer) QueryStateAfterEvents(
return nil
}
roomState := state.NewStateResolution(r.DB, *info)
roomState := state.NewStateResolution(r.DB, info)
response.RoomExists = true
response.RoomVersion = info.RoomVersion
@ -294,7 +294,7 @@ func (r *Queryer) QueryMembershipsForRoom(
events, err = r.DB.Events(ctx, eventNIDs)
} else {
stateEntries, err = helpers.StateBeforeEvent(ctx, r.DB, *info, membershipEventNID)
stateEntries, err = helpers.StateBeforeEvent(ctx, r.DB, info, membershipEventNID)
if err != nil {
logrus.WithField("membership_event_nid", membershipEventNID).WithError(err).Error("failed to load state before event")
return err
@ -377,7 +377,7 @@ func (r *Queryer) QueryServerAllowedToSeeEvent(
return fmt.Errorf("QueryServerAllowedToSeeEvent: no room info for room %s", roomID)
}
response.AllowedToSeeEvent, err = helpers.CheckServerAllowedToSeeEvent(
ctx, r.DB, *info, request.EventID, request.ServerName, inRoomRes.IsInRoom,
ctx, r.DB, info, request.EventID, request.ServerName, inRoomRes.IsInRoom,
)
return
}
@ -416,7 +416,7 @@ func (r *Queryer) QueryMissingEvents(
return fmt.Errorf("missing RoomInfo for room %s", events[0].RoomID())
}
resultNIDs, err := helpers.ScanEventTree(ctx, r.DB, *info, front, visited, request.Limit, request.ServerName)
resultNIDs, err := helpers.ScanEventTree(ctx, r.DB, info, front, visited, request.Limit, request.ServerName)
if err != nil {
return err
}
@ -473,7 +473,7 @@ func (r *Queryer) QueryStateAndAuthChain(
}
var stateEvents []*gomatrixserverlib.Event
stateEvents, err = r.loadStateAtEventIDs(ctx, *info, request.PrevEventIDs)
stateEvents, err = r.loadStateAtEventIDs(ctx, info, request.PrevEventIDs)
if err != nil {
return err
}
@ -512,7 +512,7 @@ func (r *Queryer) QueryStateAndAuthChain(
return err
}
func (r *Queryer) loadStateAtEventIDs(ctx context.Context, roomInfo types.RoomInfo, eventIDs []string) ([]*gomatrixserverlib.Event, error) {
func (r *Queryer) loadStateAtEventIDs(ctx context.Context, roomInfo *types.RoomInfo, eventIDs []string) ([]*gomatrixserverlib.Event, error) {
roomState := state.NewStateResolution(r.DB, roomInfo)
prevStates, err := r.DB.StateAtEventIDs(ctx, eventIDs)
if err != nil {

4
roomserver/state/state.go
View file

@ -32,11 +32,11 @@ import (
type StateResolution struct {
db storage.Database
roomInfo types.RoomInfo
roomInfo *types.RoomInfo
events map[types.EventNID]*gomatrixserverlib.Event
}
func NewStateResolution(db storage.Database, roomInfo types.RoomInfo) StateResolution {
func NewStateResolution(db storage.Database, roomInfo *types.RoomInfo) StateResolution {
return StateResolution{
db: db,
roomInfo: roomInfo,

4
roomserver/storage/postgres/events_table.go
View file

@ -311,7 +311,9 @@ func (s *eventStatements) BulkSelectStateAtEventByID(
); err != nil {
return nil, err
}
if result.BeforeStateSnapshotNID == 0 {
// Genuine create events are the only case where it's OK to have no previous state.
isCreate := result.EventTypeNID == types.MRoomCreateNID && result.EventStateKeyNID == 1
if result.BeforeStateSnapshotNID == 0 && !isCreate {
return nil, types.MissingEventError(
fmt.Sprintf("storage: missing state for event NID %d", result.EventNID),
)

4
roomserver/storage/sqlite3/events_table.go
View file

@ -322,7 +322,9 @@ func (s *eventStatements) BulkSelectStateAtEventByID(
); err != nil {
return nil, err
}
if result.BeforeStateSnapshotNID == 0 {
// Genuine create events are the only case where it's OK to have no previous state.
isCreate := result.EventTypeNID == types.MRoomCreateNID && result.EventStateKeyNID == 1
if result.BeforeStateSnapshotNID == 0 && !isCreate {
return nil, types.MissingEventError(
fmt.Sprintf("storage: missing state for event NID %d", result.EventNID),
)

1
setup/jetstream/helpers.go
View file

@ -3,6 +3,7 @@ package jetstream
import "github.com/nats-io/nats.go"
func WithJetStreamMessage(msg *nats.Msg, f func(msg *nats.Msg) bool) {
_ = msg.InProgress()
if f(msg) {
_ = msg.Ack()
} else {

2
setup/jetstream/streams.go
View file

@ -24,7 +24,7 @@ var (
var streams = []*nats.StreamConfig{
{
Name: InputRoomEvent,
Retention: nats.InterestPolicy,
Retention: nats.WorkQueuePolicy,
Storage: nats.FileStorage,
},
{

5
setup/mscs/msc2836/msc2836.go
View file

@ -643,9 +643,8 @@ func (rc *reqCtx) injectResponseToRoomserver(res *gomatrixserverlib.MSC2836Event
var ires []roomserver.InputRoomEvent
for _, outlier := range append(eventsInOrder, messageEvents...) {
ires = append(ires, roomserver.InputRoomEvent{
Kind: roomserver.KindOutlier,
Event: outlier.Headered(outlier.Version()),
AuthEventIDs: outlier.AuthEventIDs(),
Kind: roomserver.KindOutlier,
Event: outlier.Headered(outlier.Version()),
})
}
// we've got the data by this point so use a background context

6
syncapi/consumers/roomserver.go
View file

@ -73,7 +73,11 @@ func NewOutputRoomEventConsumer(
// Start consuming from room servers
func (s *OutputRoomEventConsumer) Start() error {
_, err := s.jetstream.Subscribe(s.topic, s.onMessage, s.durable)
_, err := s.jetstream.Subscribe(
s.topic, s.onMessage, s.durable,
nats.DeliverAll(),
nats.ManualAck(),
)
return err
}

2
sytest-blacklist
View file

@ -25,7 +25,6 @@ Local device key changes get to remote servers with correct prev_id
# Flakey
Local device key changes appear in /keys/changes
Device list doesn't change if remote server is down
If a device list update goes missing, the server resyncs on the next one
# we don't support groups
Remove group category
@ -33,4 +32,3 @@ Remove group role
# See https://github.com/matrix-org/sytest/pull/1142
Device list doesn't change if remote server is down
If a device list update goes missing, the server resyncs on the next one

1
sytest-whitelist
View file

@ -589,3 +589,4 @@ Remote user can backfill in a room with version 9
Can reject invites over federation for rooms with version 9
Can receive redactions from regular users over federation in room version 9
Forward extremities remain so even after the next events are populated as outliers
If a device list update goes missing, the server resyncs on the next one