90 lines
2.9 KiB
TypeScript
90 lines
2.9 KiB
TypeScript
import * as AsyncLRU from 'async-lru'
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import * as jsonld from 'jsonld'
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import { logger } from './logger'
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const CACHE = {
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'https://w3id.org/security/v1': {
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'@context': {
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'id': '@id',
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'type': '@type',
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'dc': 'http://purl.org/dc/terms/',
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'sec': 'https://w3id.org/security#',
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'xsd': 'http://www.w3.org/2001/XMLSchema#',
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'EcdsaKoblitzSignature2016': 'sec:EcdsaKoblitzSignature2016',
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'Ed25519Signature2018': 'sec:Ed25519Signature2018',
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'EncryptedMessage': 'sec:EncryptedMessage',
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'GraphSignature2012': 'sec:GraphSignature2012',
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'LinkedDataSignature2015': 'sec:LinkedDataSignature2015',
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'LinkedDataSignature2016': 'sec:LinkedDataSignature2016',
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'CryptographicKey': 'sec:Key',
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'authenticationTag': 'sec:authenticationTag',
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'canonicalizationAlgorithm': 'sec:canonicalizationAlgorithm',
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'cipherAlgorithm': 'sec:cipherAlgorithm',
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'cipherData': 'sec:cipherData',
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'cipherKey': 'sec:cipherKey',
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'created': { '@id': 'dc:created', '@type': 'xsd:dateTime' },
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'creator': { '@id': 'dc:creator', '@type': '@id' },
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'digestAlgorithm': 'sec:digestAlgorithm',
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'digestValue': 'sec:digestValue',
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'domain': 'sec:domain',
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'encryptionKey': 'sec:encryptionKey',
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'expiration': { '@id': 'sec:expiration', '@type': 'xsd:dateTime' },
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'expires': { '@id': 'sec:expiration', '@type': 'xsd:dateTime' },
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'initializationVector': 'sec:initializationVector',
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'iterationCount': 'sec:iterationCount',
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'nonce': 'sec:nonce',
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'normalizationAlgorithm': 'sec:normalizationAlgorithm',
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'owner': { '@id': 'sec:owner', '@type': '@id' },
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'password': 'sec:password',
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'privateKey': { '@id': 'sec:privateKey', '@type': '@id' },
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'privateKeyPem': 'sec:privateKeyPem',
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'publicKey': { '@id': 'sec:publicKey', '@type': '@id' },
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'publicKeyBase58': 'sec:publicKeyBase58',
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'publicKeyPem': 'sec:publicKeyPem',
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'publicKeyWif': 'sec:publicKeyWif',
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'publicKeyService': { '@id': 'sec:publicKeyService', '@type': '@id' },
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'revoked': { '@id': 'sec:revoked', '@type': 'xsd:dateTime' },
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'salt': 'sec:salt',
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'signature': 'sec:signature',
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'signatureAlgorithm': 'sec:signingAlgorithm',
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'signatureValue': 'sec:signatureValue'
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}
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}
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}
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const nodeDocumentLoader = jsonld.documentLoaders.node()
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const lru = new AsyncLRU({
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max: 10,
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load: (url, cb) => {
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if (CACHE[ url ] !== undefined) {
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logger.debug('Using cache for JSON-LD %s.', url)
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return cb(null, {
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contextUrl: null,
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document: CACHE[ url ],
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documentUrl: url
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})
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}
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nodeDocumentLoader(url)
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.then(value => cb(null, value))
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.catch(err => cb(err))
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}
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})
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jsonld.documentLoader = (url) => {
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return new Promise((res, rej) => {
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lru.get(url, (err, value) => {
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if (err) return rej(err)
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return res(value)
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})
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})
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}
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export { jsonld }
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