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| import {InvalidDomainName} from 'beaker-error-constants' | |
| import * as sitedataDb from '../../dbs/sitedata' | |
| import {DAT_HASH_REGEX} from '../../../lib/const' | |
| // instantate a dns cache and export it | |
| const datDns = require('dat-dns')({ | |
| persistentCache: {read, write} | |
| }) | |
| export default datDns | |
| // wrap resolveName() with a better error | |
| const resolveName = datDns.resolveName | |
| datDns.resolveName = function () { | |
| return resolveName.apply(datDns, arguments) | |
| .catch(err => { | |
| throw new InvalidDomainName() | |
| }) | |
| } | |
| // persistent cache methods | |
| const sitedataDbOpts = {dontExtractOrigin: true} | |
| async function read (name, err) { | |
| var key = await sitedataDb.get('dat:' + name, 'dat-key', sitedataDbOpts) | |
| if (!key) throw err | |
| return key | |
| } | |
| async function write (name, key) { | |
| if (DAT_HASH_REGEX.test(name)) return // dont write for raw urls | |
| await sitedataDb.set('dat:' + name, 'dat-key', key, sitedataDbOpts) | |
| } |