@expo/cli
Version:
93 lines (92 loc) • 3.04 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "FileSystemCache", {
enumerable: true,
get: ()=>FileSystemCache
});
function _cacache() {
const data = /*#__PURE__*/ _interopRequireDefault(require("cacache"));
_cacache = function() {
return data;
};
return data;
}
function _stream() {
const data = require("stream");
_stream = function() {
return data;
};
return data;
}
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
function getBodyAndMetaKeys(key) {
return [
`${key}body`,
`${key}meta`
];
}
class FileSystemCache {
constructor(options){
this.options = options;
}
async get(key) {
const [, metaKey] = getBodyAndMetaKeys(key);
const metaInfo = await _cacache().default.get.info(this.options.cacheDirectory, metaKey);
if (!metaInfo) {
return undefined;
}
const metaBuffer = await _cacache().default.get.byDigest(this.options.cacheDirectory, metaInfo.integrity);
const metaData = JSON.parse(metaBuffer);
const { bodyStreamIntegrity , empty , expiration } = metaData;
delete metaData.bodyStreamIntegrity;
delete metaData.empty;
delete metaData.expiration;
if (expiration && expiration < Date.now()) {
return undefined;
}
const bodyStream = empty ? _stream().Readable.from(Buffer.alloc(0)) : _cacache().default.get.stream.byDigest(this.options.cacheDirectory, bodyStreamIntegrity);
return {
bodyStream,
metaData
};
}
remove(key) {
const [bodyKey, metaKey] = getBodyAndMetaKeys(key);
return Promise.all([
_cacache().default.rm.entry(this.options.cacheDirectory, bodyKey),
_cacache().default.rm.entry(this.options.cacheDirectory, metaKey),
]);
}
async set(key, bodyStream, metaData) {
const [bodyKey, metaKey] = getBodyAndMetaKeys(key);
const metaCopy = {
...metaData
};
if (typeof this.options.ttl === "number") {
metaCopy.expiration = Date.now() + this.options.ttl;
}
try {
metaCopy.bodyStreamIntegrity = await new Promise((fulfill, reject)=>{
bodyStream.pipe(_cacache().default.put.stream(this.options.cacheDirectory, bodyKey)).on("integrity", (i)=>fulfill(i)).on("error", (e)=>{
reject(e);
});
});
} catch (err) {
if (err.code !== "ENODATA") {
throw err;
}
metaCopy.empty = true;
}
const metaBuffer = Buffer.from(JSON.stringify(metaCopy));
await _cacache().default.put(this.options.cacheDirectory, metaKey, metaBuffer);
const cachedData = await this.get(key);
return cachedData;
}
}
//# sourceMappingURL=FileSystemCache.js.map