124 lines
3.7 KiB
Go
124 lines
3.7 KiB
Go
// Copyright 2022 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package rooms
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import (
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"context"
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"sync"
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"time"
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"github.com/matrix-org/dendrite/cmd/dendrite-demo-pinecone/defaults"
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"github.com/matrix-org/dendrite/federationapi/api"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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pineconeRouter "github.com/matrix-org/pinecone/router"
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pineconeSessions "github.com/matrix-org/pinecone/sessions"
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)
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type PineconeRoomProvider struct {
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r *pineconeRouter.Router
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s *pineconeSessions.Sessions
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fedSender api.FederationInternalAPI
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fedClient *gomatrixserverlib.FederationClient
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}
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func NewPineconeRoomProvider(
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r *pineconeRouter.Router,
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s *pineconeSessions.Sessions,
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fedSender api.FederationInternalAPI,
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fedClient *gomatrixserverlib.FederationClient,
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) *PineconeRoomProvider {
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p := &PineconeRoomProvider{
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r: r,
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s: s,
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fedSender: fedSender,
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fedClient: fedClient,
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}
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return p
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}
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func (p *PineconeRoomProvider) Rooms() []gomatrixserverlib.PublicRoom {
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list := map[gomatrixserverlib.ServerName]struct{}{}
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for k := range defaults.DefaultServerNames {
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list[k] = struct{}{}
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}
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for _, k := range p.r.Peers() {
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list[gomatrixserverlib.ServerName(k.PublicKey)] = struct{}{}
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}
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return bulkFetchPublicRoomsFromServers(
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context.Background(), p.fedClient,
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gomatrixserverlib.ServerName(p.r.PublicKey().String()), list,
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)
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}
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// bulkFetchPublicRoomsFromServers fetches public rooms from the list of homeservers.
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// Returns a list of public rooms.
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func bulkFetchPublicRoomsFromServers(
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ctx context.Context, fedClient *gomatrixserverlib.FederationClient,
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origin gomatrixserverlib.ServerName,
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homeservers map[gomatrixserverlib.ServerName]struct{},
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) (publicRooms []gomatrixserverlib.PublicRoom) {
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limit := 200
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// follow pipeline semantics, see https://blog.golang.org/pipelines for more info.
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// goroutines send rooms to this channel
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roomCh := make(chan gomatrixserverlib.PublicRoom, int(limit))
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// signalling channel to tell goroutines to stop sending rooms and quit
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done := make(chan bool)
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// signalling to say when we can close the room channel
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var wg sync.WaitGroup
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wg.Add(len(homeservers))
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// concurrently query for public rooms
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reqctx, reqcancel := context.WithTimeout(ctx, time.Second*5)
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for hs := range homeservers {
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go func(homeserverDomain gomatrixserverlib.ServerName) {
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defer wg.Done()
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util.GetLogger(reqctx).WithField("hs", homeserverDomain).Info("Querying HS for public rooms")
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fres, err := fedClient.GetPublicRooms(reqctx, origin, homeserverDomain, int(limit), "", false, "")
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if err != nil {
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util.GetLogger(reqctx).WithError(err).WithField("hs", homeserverDomain).Warn(
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"bulkFetchPublicRoomsFromServers: failed to query hs",
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)
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return
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}
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for _, room := range fres.Chunk {
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// atomically send a room or stop
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select {
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case roomCh <- room:
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case <-done:
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case <-reqctx.Done():
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util.GetLogger(reqctx).WithError(err).WithField("hs", homeserverDomain).Info("Interrupted whilst sending rooms")
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return
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}
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}
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}(hs)
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}
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select {
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case <-time.After(5 * time.Second):
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default:
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wg.Wait()
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}
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reqcancel()
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close(done)
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close(roomCh)
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for room := range roomCh {
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publicRooms = append(publicRooms, room)
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}
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return publicRooms
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}
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