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dendrite/federationapi/api/api.go
Neil Alexander a763cbb0e1
Roomserver/federation input refactor (#2104)
* 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>
2022-01-27 14:29:14 +00:00

211 lines
7.7 KiB
Go

package api
import (
"context"
"fmt"
"time"
"github.com/matrix-org/dendrite/federationapi/types"
"github.com/matrix-org/gomatrix"
"github.com/matrix-org/gomatrixserverlib"
)
// FederationClient is a subset of gomatrixserverlib.FederationClient functions which the fedsender
// implements as proxy calls, with built-in backoff/retries/etc. Errors returned from functions in
// this interface are of type FederationClientError
type FederationClient interface {
gomatrixserverlib.BackfillClient
gomatrixserverlib.FederatedStateClient
GetUserDevices(ctx context.Context, s gomatrixserverlib.ServerName, userID string) (res gomatrixserverlib.RespUserDevices, err error)
ClaimKeys(ctx context.Context, s gomatrixserverlib.ServerName, oneTimeKeys map[string]map[string]string) (res gomatrixserverlib.RespClaimKeys, err error)
QueryKeys(ctx context.Context, s gomatrixserverlib.ServerName, keys map[string][]string) (res gomatrixserverlib.RespQueryKeys, err error)
GetEvent(ctx context.Context, s gomatrixserverlib.ServerName, eventID string) (res gomatrixserverlib.Transaction, err error)
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.
type FederationClientError struct {
Err string
RetryAfter time.Duration
Blacklisted bool
}
func (e *FederationClientError) Error() string {
return fmt.Sprintf("%s - (retry_after=%s, blacklisted=%v)", e.Err, e.RetryAfter.String(), e.Blacklisted)
}
// FederationInternalAPI is used to query information from the federation sender.
type FederationInternalAPI interface {
FederationClient
gomatrixserverlib.KeyDatabase
KeyRing() *gomatrixserverlib.KeyRing
QueryServerKeys(ctx context.Context, request *QueryServerKeysRequest, response *QueryServerKeysResponse) error
// PerformDirectoryLookup looks up a remote room ID from a room alias.
PerformDirectoryLookup(
ctx context.Context,
request *PerformDirectoryLookupRequest,
response *PerformDirectoryLookupResponse,
) error
// Query the server names of the joined hosts in a room.
// Unlike QueryJoinedHostsInRoom, this function returns a de-duplicated slice
// containing only the server names (without information for membership events).
// The response will include this server if they are joined to the room.
QueryJoinedHostServerNamesInRoom(
ctx context.Context,
request *QueryJoinedHostServerNamesInRoomRequest,
response *QueryJoinedHostServerNamesInRoomResponse,
) error
// Handle an instruction to make_join & send_join with a remote server.
PerformJoin(
ctx context.Context,
request *PerformJoinRequest,
response *PerformJoinResponse,
)
// Handle an instruction to peek a room on a remote server.
PerformOutboundPeek(
ctx context.Context,
request *PerformOutboundPeekRequest,
response *PerformOutboundPeekResponse,
) error
// Handle an instruction to make_leave & send_leave with a remote server.
PerformLeave(
ctx context.Context,
request *PerformLeaveRequest,
response *PerformLeaveResponse,
) error
// Handle sending an invite to a remote server.
PerformInvite(
ctx context.Context,
request *PerformInviteRequest,
response *PerformInviteResponse,
) error
// Notifies the federation sender that these servers may be online and to retry sending messages.
PerformServersAlive(
ctx context.Context,
request *PerformServersAliveRequest,
response *PerformServersAliveResponse,
) error
// Broadcasts an EDU to all servers in rooms we are joined to.
PerformBroadcastEDU(
ctx context.Context,
request *PerformBroadcastEDURequest,
response *PerformBroadcastEDUResponse,
) error
}
type QueryServerKeysRequest struct {
ServerName gomatrixserverlib.ServerName
KeyIDToCriteria map[gomatrixserverlib.KeyID]gomatrixserverlib.PublicKeyNotaryQueryCriteria
}
func (q *QueryServerKeysRequest) KeyIDs() []gomatrixserverlib.KeyID {
kids := make([]gomatrixserverlib.KeyID, len(q.KeyIDToCriteria))
i := 0
for keyID := range q.KeyIDToCriteria {
kids[i] = keyID
i++
}
return kids
}
type QueryServerKeysResponse struct {
ServerKeys []gomatrixserverlib.ServerKeys
}
type QueryPublicKeysRequest struct {
Requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp `json:"requests"`
}
type QueryPublicKeysResponse struct {
Results map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult `json:"results"`
}
type PerformDirectoryLookupRequest struct {
RoomAlias string `json:"room_alias"`
ServerName gomatrixserverlib.ServerName `json:"server_name"`
}
type PerformDirectoryLookupResponse struct {
RoomID string `json:"room_id"`
ServerNames []gomatrixserverlib.ServerName `json:"server_names"`
}
type PerformJoinRequest struct {
RoomID string `json:"room_id"`
UserID string `json:"user_id"`
// The sorted list of servers to try. Servers will be tried sequentially, after de-duplication.
ServerNames types.ServerNames `json:"server_names"`
Content map[string]interface{} `json:"content"`
}
type PerformJoinResponse struct {
JoinedVia gomatrixserverlib.ServerName
LastError *gomatrix.HTTPError
}
type PerformOutboundPeekRequest struct {
RoomID string `json:"room_id"`
// The sorted list of servers to try. Servers will be tried sequentially, after de-duplication.
ServerNames types.ServerNames `json:"server_names"`
}
type PerformOutboundPeekResponse struct {
LastError *gomatrix.HTTPError
}
type PerformLeaveRequest struct {
RoomID string `json:"room_id"`
UserID string `json:"user_id"`
ServerNames types.ServerNames `json:"server_names"`
}
type PerformLeaveResponse struct {
}
type PerformInviteRequest struct {
RoomVersion gomatrixserverlib.RoomVersion `json:"room_version"`
Event *gomatrixserverlib.HeaderedEvent `json:"event"`
InviteRoomState []gomatrixserverlib.InviteV2StrippedState `json:"invite_room_state"`
}
type PerformInviteResponse struct {
Event *gomatrixserverlib.HeaderedEvent `json:"event"`
}
type PerformServersAliveRequest struct {
Servers []gomatrixserverlib.ServerName
}
type PerformServersAliveResponse struct {
}
// QueryJoinedHostServerNamesInRoomRequest is a request to QueryJoinedHostServerNames
type QueryJoinedHostServerNamesInRoomRequest struct {
RoomID string `json:"room_id"`
ExcludeSelf bool `json:"exclude_self"`
}
// QueryJoinedHostServerNamesInRoomResponse is a response to QueryJoinedHostServerNames
type QueryJoinedHostServerNamesInRoomResponse struct {
ServerNames []gomatrixserverlib.ServerName `json:"server_names"`
}
type PerformBroadcastEDURequest struct {
}
type PerformBroadcastEDUResponse struct {
}
type InputPublicKeysRequest struct {
Keys map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult `json:"keys"`
}
type InputPublicKeysResponse struct {
}