69 lines
1.5 KiB
TypeScript
69 lines
1.5 KiB
TypeScript
import type { ActiveQuery } from "libkmodule";
|
|
import { addHandler, handleMessage } from "libkmodule";
|
|
import { createClient } from "@lumeweb/kernel-swarm-client";
|
|
import HandshakeProxy from "@lumeweb/hypercore-proxy-handshake";
|
|
|
|
const PROTOCOL = "lumeweb.proxy.handshake";
|
|
|
|
onmessage = handleMessage;
|
|
|
|
let moduleLoadedResolve: Function;
|
|
let moduleLoaded: Promise<void> = new Promise((resolve) => {
|
|
moduleLoadedResolve = resolve;
|
|
});
|
|
|
|
addHandler("presentSeed", handlePresentSeed);
|
|
addHandler("ready", handleReady);
|
|
addHandler("query", handleQuery);
|
|
|
|
let swarm;
|
|
let proxy: HandshakeProxy;
|
|
|
|
function resolveWithPeers(resolve: Function) {
|
|
if (proxy.node.peers.list.size === 0) {
|
|
proxy.node.pool.once("peer", () => {
|
|
resolve(null);
|
|
});
|
|
return;
|
|
}
|
|
|
|
return resolve(null);
|
|
}
|
|
|
|
async function handlePresentSeed(aq: ActiveQuery) {
|
|
swarm = createClient();
|
|
proxy = new HandshakeProxy({ swarm, listen: true });
|
|
|
|
swarm.join(PROTOCOL);
|
|
await swarm.start();
|
|
|
|
moduleLoadedResolve();
|
|
}
|
|
|
|
async function handleReady(aq: ActiveQuery) {
|
|
await moduleLoaded;
|
|
|
|
await new Promise((resolve): void => {
|
|
if (proxy.node.chain.synced) {
|
|
return resolveWithPeers(resolve);
|
|
}
|
|
|
|
proxy.node.pool.on("full", resolveWithPeers);
|
|
});
|
|
|
|
aq.respond();
|
|
}
|
|
|
|
async function handleQuery(aq: ActiveQuery) {
|
|
if (!proxy.node.chain.synced || proxy.node.peers.list.size === 0) {
|
|
aq.reject("not ready");
|
|
return;
|
|
}
|
|
|
|
try {
|
|
aq.respond(await proxy.node.rpc.call(aq.callerInput));
|
|
} catch (e) {
|
|
aq.reject((e as Error).message);
|
|
}
|
|
}
|