Pinecone P2P demo (#1856)

* Pinecone demo * Enable multicast, fix HTTP routing * Fix multicast import * Fix build * Update Pinecone demo * Fix the keys * Tweaks * Pinecone room directory support (early) * Fix gobind-pinecone * Add pinecone listener * Fix public key value * Use AuthenticatedConnect for dial * Fix gobind-pinecone * Stop panics * Give fsAPI to keyserver * Pinecone demo fixes * Update gobind build scripts * Account creation * Tweaks * Setup tweaks * API tweaks * API tweaks * API tweaks * Port mutex * Re-enable multicast * Add ReadCopy * Update quic-go, fixes * Shutdowns fixed for iOS * Update build script * Add WebSocket support * Bug fixes * Netconn context * Fix WebSocket connectivity * Fixes to gobind API * Strip frameworks * Configurability updates * Update go.mod * Update go.mod/go.sum * Update go.mod/go.sum * Update go.mod/go.sum * Try to stay connected tto static peer * Update gobind-pinecone * Update go.mod/go.sum * Test uTP+TLS * Use HTTP/2 * Don't use HTTP/2 * Update go.mod/go.sum * Attempt to reconnect to the static peer if it drops * Stay connected to static peers more stickily * Retry room directory lookups if they fail * NewQUIC -> NewSessions * Storage updates * Don't return immediately when there's nothing to sync * Updates * Try to reconnect to static peer more * Update go.mod/go.sum * Require Go 1.14 * Update go.mod/go.sum * Update go.mod/go.sum
2025-07-31 21:32:46 +00:00 · 2021-05-06 12:00:42 +01:00 · 2021-05-06 12:00:42 +01:00 · 1002e87b60
commit 1002e87b60
parent 464b908bd0
19 changed files with 1264 additions and 25 deletions
--- a/cmd/dendrite-demo-pinecone/rooms/rooms.go
+++ b/cmd/dendrite-demo-pinecone/rooms/rooms.go
@ -0,0 +1,150 @@
+// Copyright 2020 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 rooms
+
+import (
+	"context"
+	"crypto/ed25519"
+	"encoding/hex"
+	"sync"
+	"time"
+
+	"github.com/matrix-org/dendrite/federationsender/api"
+	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/matrix-org/util"
+
+	pineconeRouter "github.com/matrix-org/pinecone/router"
+	pineconeSessions "github.com/matrix-org/pinecone/sessions"
+)
+
+const pineconeRoomAttempts = 3
+
+type PineconeRoomProvider struct {
+	r         *pineconeRouter.Router
+	s         *pineconeSessions.Sessions
+	fedSender api.FederationSenderInternalAPI
+	fedClient *gomatrixserverlib.FederationClient
+}
+
+func NewPineconeRoomProvider(
+	r *pineconeRouter.Router,
+	s *pineconeSessions.Sessions,
+	fedSender api.FederationSenderInternalAPI,
+	fedClient *gomatrixserverlib.FederationClient,
+) *PineconeRoomProvider {
+	p := &PineconeRoomProvider{
+		r:         r,
+		s:         s,
+		fedSender: fedSender,
+		fedClient: fedClient,
+	}
+	return p
+}
+
+func (p *PineconeRoomProvider) Rooms() []gomatrixserverlib.PublicRoom {
+	known := []ed25519.PublicKey{}
+	for _, k := range p.r.KnownNodes() {
+		known = append(known, k[:])
+	}
+	known = append(known, p.s.Sessions()...)
+	list := []gomatrixserverlib.ServerName{}
+	for _, k := range known {
+		if len(k) == ed25519.PublicKeySize {
+			list = append(list, gomatrixserverlib.ServerName(hex.EncodeToString(k)))
+		}
+	}
+	return bulkFetchPublicRoomsFromServers(context.Background(), p.fedClient, list)
+}
+
+// bulkFetchPublicRoomsFromServers fetches public rooms from the list of homeservers.
+// Returns a list of public rooms.
+func bulkFetchPublicRoomsFromServers(
+	ctx context.Context, fedClient *gomatrixserverlib.FederationClient,
+	homeservers []gomatrixserverlib.ServerName,
+) (publicRooms []gomatrixserverlib.PublicRoom) {
+	limit := 200
+	// follow pipeline semantics, see https://blog.golang.org/pipelines for more info.
+	// goroutines send rooms to this channel
+	roomCh := make(chan gomatrixserverlib.PublicRoom, int(limit))
+	// signalling channel to tell goroutines to stop sending rooms and quit
+	done := make(chan bool)
+	// signalling to say when we can close the room channel
+	var wg sync.WaitGroup
+	wg.Add(len(homeservers))
+	// concurrently query for public rooms
+	for _, hs := range homeservers {
+		go func(homeserverDomain gomatrixserverlib.ServerName) {
+			defer wg.Done()
+			util.GetLogger(ctx).WithField("hs", homeserverDomain).Info("Querying HS for public rooms")
+			var fres gomatrixserverlib.RespPublicRooms
+			var err error
+			for i := 0; i < pineconeRoomAttempts; i++ {
+				fres, err = fedClient.GetPublicRooms(ctx, homeserverDomain, int(limit), "", false, "")
+				if err != nil {
+					util.GetLogger(ctx).WithError(err).WithField("hs", homeserverDomain).Warn(
+						"bulkFetchPublicRoomsFromServers: failed to query hs",
+					)
+					if i == pineconeRoomAttempts-1 {
+						return
+					}
+				} else {
+					break
+				}
+			}
+			for _, room := range fres.Chunk {
+				// atomically send a room or stop
+				select {
+				case roomCh <- room:
+				case <-done:
+					util.GetLogger(ctx).WithError(err).WithField("hs", homeserverDomain).Info("Interrupted whilst sending rooms")
+					return
+				}
+			}
+		}(hs)
+	}
+
+	// Close the room channel when the goroutines have quit so we don't leak, but don't let it stop the in-flight request.
+	// This also allows the request to fail fast if all HSes experience errors as it will cause the room channel to be
+	// closed.
+	go func() {
+		wg.Wait()
+		util.GetLogger(ctx).Info("Cleaning up resources")
+		close(roomCh)
+	}()
+
+	// fan-in results with timeout. We stop when we reach the limit.
+FanIn:
+	for len(publicRooms) < int(limit) || limit == 0 {
+		// add a room or timeout
+		select {
+		case room, ok := <-roomCh:
+			if !ok {
+				util.GetLogger(ctx).Info("All homeservers have been queried, returning results.")
+				break FanIn
+			}
+			publicRooms = append(publicRooms, room)
+		case <-time.After(5 * time.Second): // we've waited long enough, let's tell the client what we got.
+			util.GetLogger(ctx).Info("Waited 5s for federated public rooms, returning early")
+			break FanIn
+		case <-ctx.Done(): // the client hung up on us, let's stop.
+			util.GetLogger(ctx).Info("Client hung up, returning early")
+			break FanIn
+		}
+	}
+	// tell goroutines to stop
+	close(done)
+
+	return publicRooms
+}