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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 internal
import (
"context"
"github.com/matrix-org/dendrite/federationapi/storage/shared/receipt"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/relayapi/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/sirupsen/logrus"
)
// SetRelayingEnabled implements api.RelayInternalAPI
func (r *RelayInternalAPI) SetRelayingEnabled(enabled bool) {
r.relayingEnabledMutex.Lock()
defer r.relayingEnabledMutex.Unlock()
r.relayingEnabled = enabled
}
// RelayingEnabled implements api.RelayInternalAPI
func (r *RelayInternalAPI) RelayingEnabled() bool {
r.relayingEnabledMutex.Lock()
defer r.relayingEnabledMutex.Unlock()
return r.relayingEnabled
}
// PerformRelayServerSync implements api.RelayInternalAPI
func (r *RelayInternalAPI) PerformRelayServerSync(
ctx context.Context,
userID gomatrixserverlib.UserID,
relayServer gomatrixserverlib.ServerName,
) error {
// Providing a default RelayEntry (EntryID = 0) is done to ask the relay if there are any
// transactions available for this node.
prevEntry := gomatrixserverlib.RelayEntry{}
asyncResponse, err := r.fedClient.P2PGetTransactionFromRelay(ctx, userID, prevEntry, relayServer)
if err != nil {
logrus.Errorf("P2PGetTransactionFromRelay: %s", err.Error())
return err
}
r.processTransaction(&asyncResponse.Txn)
prevEntry = gomatrixserverlib.RelayEntry{EntryID: asyncResponse.EntryID}
for asyncResponse.EntriesQueued {
// There are still more entries available for this node from the relay.
logrus.Infof("Retrieving next entry from relay, previous: %v", prevEntry)
asyncResponse, err = r.fedClient.P2PGetTransactionFromRelay(ctx, userID, prevEntry, relayServer)
prevEntry = gomatrixserverlib.RelayEntry{EntryID: asyncResponse.EntryID}
if err != nil {
logrus.Errorf("P2PGetTransactionFromRelay: %s", err.Error())
return err
}
r.processTransaction(&asyncResponse.Txn)
}
return nil
}
// PerformStoreTransaction implements api.RelayInternalAPI
func (r *RelayInternalAPI) PerformStoreTransaction(
ctx context.Context,
transaction gomatrixserverlib.Transaction,
userID gomatrixserverlib.UserID,
) error {
logrus.Warnf("Storing transaction for %v", userID)
receipt, err := r.db.StoreTransaction(ctx, transaction)
if err != nil {
logrus.Errorf("db.StoreTransaction: %s", err.Error())
return err
}
err = r.db.AssociateTransactionWithDestinations(
ctx,
map[gomatrixserverlib.UserID]struct{}{
userID: {},
},
transaction.TransactionID,
receipt)
return err
}
// QueryTransactions implements api.RelayInternalAPI
func (r *RelayInternalAPI) QueryTransactions(
ctx context.Context,
userID gomatrixserverlib.UserID,
previousEntry gomatrixserverlib.RelayEntry,
) (api.QueryRelayTransactionsResponse, error) {
logrus.Infof("QueryTransactions for %s", userID.Raw())
if previousEntry.EntryID > 0 {
logrus.Infof("Cleaning previous entry (%v) from db for %s",
previousEntry.EntryID,
userID.Raw(),
)
prevReceipt := receipt.NewReceipt(previousEntry.EntryID)
err := r.db.CleanTransactions(ctx, userID, []*receipt.Receipt{&prevReceipt})
if err != nil {
logrus.Errorf("db.CleanTransactions: %s", err.Error())
return api.QueryRelayTransactionsResponse{}, err
}
}
transaction, receipt, err := r.db.GetTransaction(ctx, userID)
if err != nil {
logrus.Errorf("db.GetTransaction: %s", err.Error())
return api.QueryRelayTransactionsResponse{}, err
}
response := api.QueryRelayTransactionsResponse{}
if transaction != nil && receipt != nil {
logrus.Infof("Obtained transaction (%v) for %s", transaction.TransactionID, userID.Raw())
response.Transaction = *transaction
response.EntryID = receipt.GetNID()
response.EntriesQueued = true
} else {
logrus.Infof("No more entries in the queue for %s", userID.Raw())
response.EntryID = 0
response.EntriesQueued = false
}
return response, nil
}
func (r *RelayInternalAPI) processTransaction(txn *gomatrixserverlib.Transaction) {
logrus.Warn("Processing transaction from relay server")
mu := internal.NewMutexByRoom()
t := internal.NewTxnReq(
r.rsAPI,
nil,
r.serverName,
r.keyRing,
mu,
r.producer,
r.presenceEnabledInbound,
txn.PDUs,
txn.EDUs,
txn.Origin,
txn.TransactionID,
txn.Destination)
t.ProcessTransaction(context.TODO())
}
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