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// Copyright 2022 The Matrix.org Foundation C.I.C.
//
// 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/relayapi/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
"github.com/sirupsen/logrus"
)
type RelayTransactionResponse struct {
Transaction gomatrixserverlib.Transaction `json:"transaction"`
EntryID int64 `json:"entry_id,omitempty"`
EntriesQueued bool `json:"entries_queued"`
}
// GetTransactionFromRelay implements GET /_matrix/federation/v1/relay_txn/{userID}
// This endpoint can be extracted into a separate relay server service.
func GetTransactionFromRelay(
httpReq *http.Request,
fedReq *gomatrixserverlib.FederationRequest,
relayAPI api.RelayInternalAPI,
userID gomatrixserverlib.UserID,
) util.JSONResponse {
logrus.Infof("Processing relay_txn for %s", userID.Raw())
previousEntry := gomatrixserverlib.RelayEntry{}
if err := json.Unmarshal(fedReq.Content(), &previousEntry); err != nil {
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: jsonerror.BadJSON("invalid json provided"),
}
}
if previousEntry.EntryID < 0 {
return util.JSONResponse{
Code: http.StatusInternalServerError,
JSON: jsonerror.BadJSON("Invalid entry id provided. Must be >= 0."),
}
}
logrus.Infof("Previous entry provided: %v", previousEntry.EntryID)
response, err := relayAPI.QueryTransactions(httpReq.Context(), userID, previousEntry)
if err != nil {
return util.JSONResponse{
Code: http.StatusInternalServerError,
}
}
return util.JSONResponse{
Code: http.StatusOK,
JSON: RelayTransactionResponse{
Transaction: response.Transaction,
EntryID: response.EntryID,
EntriesQueued: response.EntriesQueued,
},
}
}
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