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refactor: Use common code for filter and light push

This commit is contained in:
Franck Royer 2022-07-25 12:43:17 +10:00 committed by fryorcraken.eth
parent 811685e041
commit 4c3da7bad2
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1 changed files with 35 additions and 41 deletions
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76
src/lib/wait_for_remote_peer.ts
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@ -1,5 +1,6 @@
import { PeerProtocolsChangeData } from "@libp2p/interface-peer-store";
import { Peer, PeerProtocolsChangeData } from "@libp2p/interface-peer-store";
import debug from "debug";
import type { Libp2p } from "libp2p";
import { StoreCodecs } from "./constants";
import { Protocols, Waku } from "./waku";
@ -8,6 +9,11 @@ import { LightPushCodec } from "./waku_light_push";
const log = debug("waku:wait-for-remote-peer");
interface WakuProtocol {
libp2p: Libp2p;
peers: () => Promise<Peer[]>;
}
/**
* Wait for a remote peer to be ready given the passed protocols.
* Useful when using the [[CreateOptions.bootstrap]] with [[Waku.create]].
@ -76,49 +82,11 @@ export async function waitForRemotePeer(
}
if (protocols.includes(Protocols.LightPush)) {
const lightPushPromise = (async (): Promise<void> => {
const peers = await waku.lightPush.peers();
if (peers.length) {
log("Light Push peer found: ", peers[0].id.toString());
return;
}
await new Promise<void>((resolve) => {
const cb = (evt: CustomEvent<PeerProtocolsChangeData>): void => {
if (evt.detail.protocols.includes(LightPushCodec)) {
log("Resolving for", LightPushCodec, evt.detail.protocols);
waku.libp2p.peerStore.removeEventListener("change:protocols", cb);
resolve();
}
};
waku.libp2p.peerStore.addEventListener("change:protocols", cb);
});
})();
promises.push(lightPushPromise);
promises.push(waitForConnectedPeer(waku.lightPush, LightPushCodec));
}
if (protocols.includes(Protocols.Filter)) {
const filterPromise = (async (): Promise<void> => {
const peers = await waku.filter.peers();
if (peers.length) {
log("Filter peer found: ", peers[0].id.toString());
return;
}
await new Promise<void>((resolve) => {
const cb = (evt: CustomEvent<PeerProtocolsChangeData>): void => {
if (evt.detail.protocols.includes(FilterCodec)) {
log("Resolving for", FilterCodec, evt.detail.protocols);
waku.libp2p.peerStore.removeEventListener("change:protocols", cb);
resolve();
}
};
waku.libp2p.peerStore.addEventListener("change:protocols", cb);
});
})();
promises.push(filterPromise);
promises.push(waitForConnectedPeer(waku.lightPush, FilterCodec));
}
if (timeoutMs) {
@ -132,6 +100,32 @@ export async function waitForRemotePeer(
}
}
/**
* Wait for a peer with the given protocol to be connected.
*/
async function waitForConnectedPeer(
waku: WakuProtocol,
codec: string
): Promise<void> {
const peers = await waku.peers();
if (peers.length) {
log(`${codec} peer found: `, peers[0].id.toString());
return;
}
await new Promise<void>((resolve) => {
const cb = (evt: CustomEvent<PeerProtocolsChangeData>): void => {
if (evt.detail.protocols.includes(codec)) {
log("Resolving for", codec, evt.detail.protocols);
waku.libp2p.peerStore.removeEventListener("change:protocols", cb);
resolve();
}
};
waku.libp2p.peerStore.addEventListener("change:protocols", cb);
});
}
const awaitTimeout = (ms: number, rejectReason: string): Promise<void> =>
new Promise((_resolve, reject) => setTimeout(() => reject(rejectReason), ms));