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chore: enrich logging about pubsub topic state #167

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Merged
chmurson merged 1 commit into from
Nov 30, 2025
Merged

chore: enrich logging about pubsub topic state #167

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82 changes: 52 additions & 30 deletions be/src/start-libp2p-relay.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ import { initRoomRegistrationProtocol, shortenPeerId } from "@icod2/protocols";
import { autoNAT } from "@libp2p/autonat";
import { circuitRelayServer } from "@libp2p/circuit-relay-v2";
import { identify } from "@libp2p/identify";
import type { Libp2p, PeerId } from "@libp2p/interface";
import type { Libp2p, PeerId, SubscriptionChangeData } from "@libp2p/interface";
import { tcp } from "@libp2p/tcp";
import { webSockets } from "@libp2p/websockets";
import { createLibp2p } from "libp2p";
Expand Down Expand Up @@ -202,18 +202,41 @@ export async function startLibp2pRelay({
debouncedLogPeerUpdated(peerIdStr);
});

libp2p.services.pubsub.addEventListener("subscription-change", () => {
debouncedSubscriptionChange();
libp2p.services.pubsub.addEventListener("subscription-change", (e) => {
debouncedSubscriptionChange(e);
});

function subscriptionChanged() {
function subscriptionChanged(e: CustomEvent<SubscriptionChangeData>) {
const topic = e.detail.subscriptions[0].topic;
logger.info(e.detail, "Subscription changed event detail");
logger.info(
libp2p.services.pubsub
.getSubscribers(topic)
.map((peerId) => shortenPeerId(peerId.toString())),
`Subscribers to ${topic} topic `,
);
const roomStats = getRoomStats();
logger.info({ roomStats }, "Subscription changed");
debouncedPrintInfoAboutPubSubTopics();
}

const debouncedLogPeerUpdated = debounce(peerUpdated, 2000);
const debouncedSubscriptionChange = debounce(subscriptionChanged, 2000);

function getTopics() {
return libp2p.services.pubsub.getTopics();
}

const debouncedPrintInfoAboutPubSubTopics = debounce(
printInfoAboutPubSubTopics,
2000,
);

function printInfoAboutPubSubTopics() {
const topics = getTopics();
logger.info({ topics }, "All Topics");
}

function peerUpdated(peerIdStr: string) {
logger.info(
{
Expand All @@ -224,6 +247,7 @@ export async function startLibp2pRelay({
},
"Peer updated",
);
debouncedPrintInfoAboutPubSubTopics();
}

function getRoomStats() {
Expand All @@ -239,33 +263,31 @@ export async function startLibp2pRelay({
return acc;
}, {});
}
}

function formatConnectedPeers(peers: Set<string>): string[] {
return Array.from(peers.values()).map((peerId) => shortenPeerId(peerId));
}
function formatConnectedPeers(peers: Set<string>): string[] {
return Array.from(peers.values()).map((peerId) => shortenPeerId(peerId));
}

function toPeerIdString(peerId: string | PeerId): string {
return typeof peerId === "string" ? peerId : peerId.toString();
}
function toPeerIdString(peerId: string | PeerId): string {
return typeof peerId === "string" ? peerId : peerId.toString();
}

function getConnectionStats(libp2p: Libp2p, peerIdStr: string) {
return libp2p.getConnections().reduce(
(acc, conn) => {
const object = acc.find(
(x) => x.peerId === shortenPeerId(peerIdStr),
) ?? {
peerId: shortenPeerId(conn.remotePeer.toString()),
connectionCount: 0,
streamsCount: 0,
};
if (object.connectionCount === 0) {
acc.push(object);
}
object.connectionCount += 1;
object.streamsCount += conn.streams.length;
return acc;
},
[] as { peerId: string; connectionCount: number; streamsCount: number }[],
);
}
function getConnectionStats(libp2p: Libp2p, peerIdStr: string) {
return libp2p.getConnections().reduce(
(acc, conn) => {
const object = acc.find((x) => x.peerId === shortenPeerId(peerIdStr)) ?? {
peerId: shortenPeerId(conn.remotePeer.toString()),
connectionCount: 0,
streamsCount: 0,
};
if (object.connectionCount === 0) {
acc.push(object);
}
object.connectionCount += 1;
object.streamsCount += conn.streams.length;
return acc;
},
[] as { peerId: string; connectionCount: number; streamsCount: number }[],
);
}