35 lines
788 B
TypeScript
35 lines
788 B
TypeScript
import NodeCache from "node-cache";
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import { resolve as resolveDns } from "@lumeweb/kernel-dns-client";
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import { DNSResult, ResolverOptions } from "@lumeweb/libresolver";
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import { blake2b, Err } from "libskynet/dist";
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const cache = new NodeCache({ stdTTL: 60 });
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export async function resolve(
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domain: string,
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options?: ResolverOptions,
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bypassCache = false
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): Promise<DNSResult | Error> {
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let cacheId = `${domain}:{${blake2b(
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new TextEncoder().encode(JSON.stringify(options))
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)}`;
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if (cache.has(cacheId)) {
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cache.ttl(cacheId);
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return cache.get(cacheId) as DNSResult;
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}
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let res;
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try {
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res = await resolveDns(domain, options, bypassCache);
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} catch (e: any) {
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return e as Error;
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}
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if (res) {
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cache.set(cacheId, res);
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}
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return res;
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}
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