mirror of
https://github.com/matrix-org/dendrite
synced 2024-12-13 21:53:32 +01:00
85 lines
2.6 KiB
Go
85 lines
2.6 KiB
Go
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package routing
|
|
|
|
import (
|
|
"encoding/json"
|
|
"net/http"
|
|
|
|
"github.com/matrix-org/dendrite/clientapi/jsonerror"
|
|
"github.com/matrix-org/dendrite/roomserver/api"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
"github.com/matrix-org/util"
|
|
)
|
|
|
|
type getMissingEventRequest struct {
|
|
EarliestEvents []string `json:"earliest_events"`
|
|
LatestEvents []string `json:"latest_events"`
|
|
Limit int `json:"limit"`
|
|
MinDepth int64 `json:"min_depth"` // not used
|
|
}
|
|
|
|
// GetMissingEvents returns missing events between earliest_events & latest_events.
|
|
// Events are fetched from room DAG starting from latest_events until we reach earliest_events or the limit.
|
|
func GetMissingEvents(
|
|
httpReq *http.Request,
|
|
request *gomatrixserverlib.FederationRequest,
|
|
rsAPI api.RoomserverInternalAPI,
|
|
roomID string,
|
|
) util.JSONResponse {
|
|
var gme getMissingEventRequest
|
|
if err := json.Unmarshal(request.Content(), &gme); err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.NotJSON("The request body could not be decoded into valid JSON. " + err.Error()),
|
|
}
|
|
}
|
|
|
|
var eventsResponse api.QueryMissingEventsResponse
|
|
if err := rsAPI.QueryMissingEvents(
|
|
httpReq.Context(), &api.QueryMissingEventsRequest{
|
|
EarliestEvents: gme.EarliestEvents,
|
|
LatestEvents: gme.LatestEvents,
|
|
Limit: gme.Limit,
|
|
ServerName: request.Origin(),
|
|
},
|
|
&eventsResponse,
|
|
); err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("query.QueryMissingEvents failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
|
|
eventsResponse.Events = filterEvents(eventsResponse.Events, roomID)
|
|
|
|
resp := gomatrixserverlib.RespMissingEvents{
|
|
Events: gomatrixserverlib.UnwrapEventHeaders(eventsResponse.Events),
|
|
}
|
|
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: resp,
|
|
}
|
|
}
|
|
|
|
// filterEvents returns only those events with matching roomID
|
|
func filterEvents(
|
|
events []gomatrixserverlib.HeaderedEvent, roomID string,
|
|
) []gomatrixserverlib.HeaderedEvent {
|
|
ref := events[:0]
|
|
for _, ev := range events {
|
|
if ev.RoomID() == roomID {
|
|
ref = append(ref, ev)
|
|
}
|
|
}
|
|
return ref
|
|
}
|