diff options
Diffstat (limited to 'deps/npm/node_modules/npm-profile/node_modules/make-fetch-happen/node_modules/cacache/lib/memoization.js')
-rw-r--r-- | deps/npm/node_modules/npm-profile/node_modules/make-fetch-happen/node_modules/cacache/lib/memoization.js | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/deps/npm/node_modules/npm-profile/node_modules/make-fetch-happen/node_modules/cacache/lib/memoization.js b/deps/npm/node_modules/npm-profile/node_modules/make-fetch-happen/node_modules/cacache/lib/memoization.js new file mode 100644 index 0000000000..92179c7ac6 --- /dev/null +++ b/deps/npm/node_modules/npm-profile/node_modules/make-fetch-happen/node_modules/cacache/lib/memoization.js @@ -0,0 +1,69 @@ +'use strict' + +const LRU = require('lru-cache') + +const MAX_SIZE = 50 * 1024 * 1024 // 50MB +const MAX_AGE = 3 * 60 * 1000 + +let MEMOIZED = new LRU({ + max: MAX_SIZE, + maxAge: MAX_AGE, + length: (entry, key) => { + if (key.startsWith('key:')) { + return entry.data.length + } else if (key.startsWith('digest:')) { + return entry.length + } + } +}) + +module.exports.clearMemoized = clearMemoized +function clearMemoized () { + const old = {} + MEMOIZED.forEach((v, k) => { + old[k] = v + }) + MEMOIZED.reset() + return old +} + +module.exports.put = put +function put (cache, entry, data, opts) { + pickMem(opts).set(`key:${cache}:${entry.key}`, { entry, data }) + putDigest(cache, entry.integrity, data, opts) +} + +module.exports.put.byDigest = putDigest +function putDigest (cache, integrity, data, opts) { + pickMem(opts).set(`digest:${cache}:${integrity}`, data) +} + +module.exports.get = get +function get (cache, key, opts) { + return pickMem(opts).get(`key:${cache}:${key}`) +} + +module.exports.get.byDigest = getDigest +function getDigest (cache, integrity, opts) { + return pickMem(opts).get(`digest:${cache}:${integrity}`) +} + +class ObjProxy { + constructor (obj) { + this.obj = obj + } + get (key) { return this.obj[key] } + set (key, val) { this.obj[key] = val } +} + +function pickMem (opts) { + if (!opts || !opts.memoize) { + return MEMOIZED + } else if (opts.memoize.get && opts.memoize.set) { + return opts.memoize + } else if (typeof opts.memoize === 'object') { + return new ObjProxy(opts.memoize) + } else { + return MEMOIZED + } +} |