From 6cd42272c464f3182ec232f396f16676fc2ce835 Mon Sep 17 00:00:00 2001 From: Randall Schmidt Date: Mon, 5 Jul 2021 21:40:53 -0400 Subject: [PATCH] add filesystem caching with cacache --- classes/caching/file_system_cache.js | 64 ++++++-- index.js | 10 +- package-lock.json | 210 +++++++++++++++++++++++---- package.json | 1 + test/tests.js | 18 +++ 5 files changed, 268 insertions(+), 35 deletions(-) diff --git a/classes/caching/file_system_cache.js b/classes/caching/file_system_cache.js index ccaec8a..44f95df 100644 --- a/classes/caching/file_system_cache.js +++ b/classes/caching/file_system_cache.js @@ -1,26 +1,72 @@ -import FPersist from 'fpersist'; +import cacache from 'cacache'; +import { Readable } from 'stream'; import { KeyTimeout } from './key_timeout.js'; +function getBodyAndMetaKeys(key) { + return [`${key}body`, `${key}meta`]; +} + export class FileSystemCache { constructor(options = {}) { this.ttl = options.ttl; this.keyTimeout = new KeyTimeout(); - - const cacheDirectory = options.cacheDirectory || '.cache'; - this.cache = new FPersist(cacheDirectory); + this.cacheDirectory = options.cacheDirectory || '.cache'; } - get(key) { - return this.cache.getItem(key); + async get(key) { + const [, metaKey] = getBodyAndMetaKeys(key); + + const metaInfo = await cacache.get.info(this.cacheDirectory, metaKey); + + if (!metaInfo) { + return undefined; + } + + const metaBuffer = await cacache.get.byDigest(this.cacheDirectory, metaInfo.integrity); + const metaData = JSON.parse(metaBuffer); + const { bodyStreamIntegrity, bodyStreamLength } = metaData; + delete metaData.bodyStreamIntegrity; + delete metaData.bodyStreamLength; + + const bodyStream = bodyStreamLength > 0 + ? cacache.get.stream.byDigest(this.cacheDirectory, bodyStreamIntegrity) + : Readable.from(Buffer.alloc(0)); + + return { + bodyStream, + metaData, + }; } remove(key) { + const [bodyKey, metaKey] = getBodyAndMetaKeys(key); + this.keyTimeout.clearTimeout(key); - return this.cache.deleteItem(key); + + return Promise.all([ + cacache.rm.entry(this.cacheDirectory, bodyKey), + cacache.rm.entry(this.cacheDirectory, metaKey), + ]); } - async set(key, value) { - await this.cache.setItem(key, value); + async set(key, bodyStream, metaData, bodyStreamLength) { + const [bodyKey, metaKey] = getBodyAndMetaKeys(key); + const metaCopy = { ...metaData, bodyStreamLength }; + + this.keyTimeout.clearTimeout(key); + + if (bodyStreamLength > 0) { + metaCopy.bodyStreamIntegrity = await new Promise((fulfill, reject) => { + bodyStream.pipe(cacache.put.stream(this.cacheDirectory, bodyKey)) + .on('integrity', (i) => fulfill(i)) + .on('error', (e) => { + reject(e); + }); + }); + } + + const metaBuffer = Buffer.from(JSON.stringify(metaCopy)); + await cacache.put(this.cacheDirectory, metaKey, metaBuffer); if (typeof this.ttl === 'number') { this.keyTimeout.updateTimeout(key, this.ttl, () => this.remove(key)); diff --git a/index.js b/index.js index 9eb450f..f21f4fb 100644 --- a/index.js +++ b/index.js @@ -91,8 +91,16 @@ async function getResponse(cache, requestArguments) { const fetchResponse = await fetch(...requestArguments); const nfcResponse = NFCResponse.fromNodeFetchResponse(fetchResponse, ejectSelfFromCache); + const contentLength = Number.parseInt(nfcResponse.headers.get('content-length'), 10) || 0; const nfcResponseSerialized = nfcResponse.serialize(); - await cache.set(cacheKey, nfcResponseSerialized.bodyStream, nfcResponseSerialized.metaData); + + await cache.set( + cacheKey, + nfcResponseSerialized.bodyStream, + nfcResponseSerialized.metaData, + contentLength, + ); + return nfcResponse; } diff --git a/package-lock.json b/package-lock.json index ec8aefb..bdc246b 100644 --- a/package-lock.json +++ b/package-lock.json @@ -427,6 +427,22 @@ "integrity": "sha512-ZXRY4jNvVgSVQ8DL3LTcakaAtXwTVUxE81hslsyD2AtoXW/wVob10HkOJ1X/pAlcI7D+2YoZKg5do8G/w6RYgA==", "dev": true }, + "@npmcli/move-file": { + "version": "1.1.2", + "resolved": "https://registry.npmjs.org/@npmcli/move-file/-/move-file-1.1.2.tgz", + "integrity": "sha512-1SUf/Cg2GzGDyaf15aR9St9TWlb+XvbZXWpDx8YKs7MLzMH/BCeopv+y9vzrzgkfykCGuWOlSu3mZhj2+FQcrg==", + "requires": { + "mkdirp": "^1.0.4", + "rimraf": "^3.0.2" + }, + "dependencies": { + "mkdirp": { + "version": "1.0.4", + "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.4.tgz", + "integrity": "sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==" + } + } + }, "@types/color-name": { "version": "1.1.1", "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz", @@ -461,7 +477,6 @@ "version": "3.1.0", "resolved": "https://registry.npmjs.org/aggregate-error/-/aggregate-error-3.1.0.tgz", "integrity": "sha512-4I7Td01quW/RpocfNayFdFVk1qSuoh0E7JrbRJ16nH01HhKFQ88INq9Sd+nd72zqRySlr9BmDA8xlEJ6vJMrYA==", - "dev": true, "requires": { "clean-stack": "^2.0.0", "indent-string": "^4.0.0" @@ -587,8 +602,7 @@ "balanced-match": { "version": "1.0.0", "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz", - "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=", - "dev": true + "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=" }, "binary-extensions": { "version": "2.1.0", @@ -600,7 +614,6 @@ "version": "1.1.11", "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz", "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==", - "dev": true, "requires": { "balanced-match": "^1.0.0", "concat-map": "0.0.1" @@ -634,6 +647,45 @@ "node-releases": "^1.1.71" } }, + "cacache": { + "version": "15.2.0", + "resolved": "https://registry.npmjs.org/cacache/-/cacache-15.2.0.tgz", + "integrity": "sha512-uKoJSHmnrqXgthDFx/IU6ED/5xd+NNGe+Bb+kLZy7Ku4P+BaiWEUflAKPZ7eAzsYGcsAGASJZsybXp+quEcHTw==", + "requires": { + "@npmcli/move-file": "^1.0.1", + "chownr": "^2.0.0", + "fs-minipass": "^2.0.0", + "glob": "^7.1.4", + "infer-owner": "^1.0.4", + "lru-cache": "^6.0.0", + "minipass": "^3.1.1", + "minipass-collect": "^1.0.2", + "minipass-flush": "^1.0.5", + "minipass-pipeline": "^1.2.2", + "mkdirp": "^1.0.3", + "p-map": "^4.0.0", + "promise-inflight": "^1.0.1", + "rimraf": "^3.0.2", + "ssri": "^8.0.1", + "tar": "^6.0.2", + "unique-filename": "^1.1.1" + }, + "dependencies": { + "mkdirp": { + "version": "1.0.4", + "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.4.tgz", + "integrity": "sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==" + }, + "p-map": { + "version": "4.0.0", + "resolved": "https://registry.npmjs.org/p-map/-/p-map-4.0.0.tgz", + "integrity": "sha512-/bjOqmgETBYB5BoEeGVea8dmvHb2m9GLy1E9W43yeyfP6QQCZGFNa+XRceJEuDB6zqr+gKpIAmlLebMpykw/MQ==", + "requires": { + "aggregate-error": "^3.0.0" + } + } + } + }, "caching-transform": { "version": "4.0.0", "resolved": "https://registry.npmjs.org/caching-transform/-/caching-transform-4.0.0.tgz", @@ -697,6 +749,11 @@ "readdirp": "~3.5.0" } }, + "chownr": { + "version": "2.0.0", + "resolved": "https://registry.npmjs.org/chownr/-/chownr-2.0.0.tgz", + "integrity": "sha512-bIomtDF5KGpdogkLd9VspvFzk9KfpyyGlS8YFVZl7TGPBHL5snIOnxeshwVgPteQ9b4Eydl+pVbIyE1DcvCWgQ==" + }, "ci-info": { "version": "2.0.0", "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-2.0.0.tgz", @@ -706,8 +763,7 @@ "clean-stack": { "version": "2.2.0", "resolved": "https://registry.npmjs.org/clean-stack/-/clean-stack-2.2.0.tgz", - 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"integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=", - "dev": true + "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=" }, "fsevents": { "version": "2.1.3", @@ -1561,7 +1623,6 @@ "version": "7.1.6", "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz", "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==", - "dev": true, "requires": { "fs.realpath": "^1.0.0", "inflight": "^1.0.4", @@ -1805,20 +1866,22 @@ "imurmurhash": { "version": "0.1.4", "resolved": "https://registry.npmjs.org/imurmurhash/-/imurmurhash-0.1.4.tgz", - "integrity": "sha1-khi5srkoojixPcT7a21XbyMUU+o=", - "dev": true + "integrity": "sha1-khi5srkoojixPcT7a21XbyMUU+o=" }, "indent-string": { "version": "4.0.0", "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-4.0.0.tgz", - "integrity": "sha512-EdDDZu4A2OyIK7Lr/2zG+w5jmbuk1DVBnEwREQvBzspBJkCEbRa8GxU1lghYcaGJCnRWibjDXlq779X1/y5xwg==", - "dev": true + "integrity": "sha512-EdDDZu4A2OyIK7Lr/2zG+w5jmbuk1DVBnEwREQvBzspBJkCEbRa8GxU1lghYcaGJCnRWibjDXlq779X1/y5xwg==" + }, + "infer-owner": { + "version": "1.0.4", + "resolved": "https://registry.npmjs.org/infer-owner/-/infer-owner-1.0.4.tgz", + "integrity": "sha512-IClj+Xz94+d7irH5qRyfJonOdfTzuDaifE6ZPWfx0N0+/ATZCbuTPq2prFl526urkQd90WyUKIh1DfBQ2hMz9A==" }, "inflight": { "version": "1.0.6", "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz", "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=", - "dev": true, "requires": { "once": "^1.3.0", "wrappy": "1" @@ -1827,8 +1890,7 @@ "inherits": { "version": "2.0.4", "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz", - "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==", - "dev": true + "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==" }, "inquirer": { "version": "7.1.0", @@ -2333,6 +2395,14 @@ } } }, + "lru-cache": { + "version": "6.0.0", + "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz", + "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==", + "requires": { + "yallist": "^4.0.0" + } + }, "make-dir": { "version": "3.1.0", "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz", @@ -2367,7 +2437,6 @@ "version": "3.0.4", "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz", "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==", - "dev": true, "requires": { "brace-expansion": "^1.1.7" } @@ -2378,6 +2447,47 @@ "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==", "dev": true }, + "minipass": { + "version": "3.1.3", + "resolved": "https://registry.npmjs.org/minipass/-/minipass-3.1.3.tgz", + "integrity": "sha512-Mgd2GdMVzY+x3IJ+oHnVM+KG3lA5c8tnabyJKmHSaG2kAGpudxuOf8ToDkhumF7UzME7DecbQE9uOZhNm7PuJg==", + "requires": { + "yallist": "^4.0.0" + } + }, + "minipass-collect": { + "version": "1.0.2", + "resolved": "https://registry.npmjs.org/minipass-collect/-/minipass-collect-1.0.2.tgz", + "integrity": "sha512-6T6lH0H8OG9kITm/Jm6tdooIbogG9e0tLgpY6mphXSm/A9u8Nq1ryBG+Qspiub9LjWlBPsPS3tWQ/Botq4FdxA==", + "requires": { + "minipass": "^3.0.0" + } + }, + "minipass-flush": { + "version": "1.0.5", + "resolved": "https://registry.npmjs.org/minipass-flush/-/minipass-flush-1.0.5.tgz", + "integrity": "sha512-JmQSYYpPUqX5Jyn1mXaRwOda1uQ8HP5KAT/oDSLCzt1BYRhQU0/hDtsB1ufZfEEzMZ9aAVmsBw8+FWsIXlClWw==", + "requires": { + "minipass": "^3.0.0" + } + }, + "minipass-pipeline": { + "version": "1.2.4", + "resolved": "https://registry.npmjs.org/minipass-pipeline/-/minipass-pipeline-1.2.4.tgz", + "integrity": "sha512-xuIq7cIOt09RPRJ19gdi4b+RiNvDFYe5JH+ggNvBqGqpQXcru3PcRmOZuHBKWK1Txf9+cQ+HMVN4d6z46LZP7A==", + "requires": { + "minipass": "^3.0.0" + } + }, + "minizlib": { + "version": "2.1.2", + "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-2.1.2.tgz", + "integrity": "sha512-bAxsR8BVfj60DWXHE3u30oHzfl4G7khkSuPW+qvpd7jFRHm7dLxOjUk1EHACJ/hxLY8phGJ0YhYHZo7jil7Qdg==", + "requires": { + "minipass": "^3.0.0", + "yallist": "^4.0.0" + } + }, "mkdirp": { "version": "0.5.5", "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz", @@ -2824,7 +2934,6 @@ "version": "1.4.0", "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz", "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=", - "dev": true, "requires": { "wrappy": "1" } @@ -2936,8 +3045,7 @@ "path-is-absolute": { "version": "1.0.1", "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz", - "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=", - "dev": true + "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=" }, "path-key": { "version": "2.0.1", @@ -3011,6 +3119,11 @@ "integrity": "sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==", "dev": true }, + "promise-inflight": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/promise-inflight/-/promise-inflight-1.0.1.tgz", + "integrity": "sha1-mEcocL8igTL8vdhoEputEsPAKeM=" + }, "punycode": { "version": "2.1.1", "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz", @@ -3112,7 +3225,6 @@ "version": "3.0.2", "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz", "integrity": "sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==", - "dev": true, "requires": { "glob": "^7.1.3" } @@ -3295,6 +3407,14 @@ "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=", "dev": true }, + "ssri": { + "version": "8.0.1", + "resolved": "https://registry.npmjs.org/ssri/-/ssri-8.0.1.tgz", + "integrity": "sha512-97qShzy1AiyxvPNIkLWoGua7xoQzzPjQ0HAH4B0rWKo7SZ6USuPcrUiAFrws0UH8RrbWmgq3LMTObhPIHbbBeQ==", + "requires": { + "minipass": "^3.1.1" + } + }, "string-width": { "version": "4.2.0", "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz", @@ -3434,6 +3554,26 @@ } } }, + "tar": { + "version": "6.1.0", + "resolved": "https://registry.npmjs.org/tar/-/tar-6.1.0.tgz", + "integrity": "sha512-DUCttfhsnLCjwoDoFcI+B2iJgYa93vBnDUATYEeRx6sntCTdN01VnqsIuTlALXla/LWooNg0yEGeB+Y8WdFxGA==", + "requires": { + "chownr": "^2.0.0", + "fs-minipass": "^2.0.0", + "minipass": "^3.0.0", + "minizlib": "^2.1.1", + "mkdirp": "^1.0.3", + "yallist": "^4.0.0" + }, + "dependencies": { + "mkdirp": { + "version": "1.0.4", + "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.4.tgz", + "integrity": "sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==" + } + } + }, "test-exclude": { "version": "6.0.0", "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-6.0.0.tgz", @@ -3511,6 +3651,22 @@ "is-typedarray": "^1.0.0" } }, + "unique-filename": { + "version": "1.1.1", + "resolved": "https://registry.npmjs.org/unique-filename/-/unique-filename-1.1.1.tgz", + "integrity": "sha512-Vmp0jIp2ln35UTXuryvjzkjGdRyf9b2lTXuSYUiPmzRcl3FDtYqAwOnTJkAngD9SWhnoJzDbTKwaOrZ+STtxNQ==", + "requires": { + "unique-slug": "^2.0.0" + } + }, + "unique-slug": { + "version": "2.0.2", + "resolved": "https://registry.npmjs.org/unique-slug/-/unique-slug-2.0.2.tgz", + "integrity": "sha512-zoWr9ObaxALD3DOPfjPSqxt4fnZiWblxHIgeWqW8x7UqDzEtHEQLzji2cuJYQFCU6KmoJikOYAZlrTHHebjx2w==", + "requires": { + "imurmurhash": "^0.1.4" + } + }, "uri-js": { "version": "4.2.2", "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz", @@ -3656,8 +3812,7 @@ "wrappy": { "version": "1.0.2", "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz", - "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=", - "dev": true + "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=" }, "write": { "version": "1.0.3", @@ -3686,6 +3841,11 @@ "integrity": "sha512-JKhqTOwSrqNA1NY5lSztJ1GrBiUodLMmIZuLiDaMRJ+itFd+ABVE8XBjOvIWL+rSqNDC74LCSFmlb/U4UZ4hJQ==", "dev": true }, + "yallist": { + "version": "4.0.0", + "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz", + "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==" + }, "yaml": { "version": "1.10.0", "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.0.tgz", diff --git a/package.json b/package.json index 7c6e5c5..75ccc91 100644 --- a/package.json +++ b/package.json @@ -38,6 +38,7 @@ "rimraf": "^3.0.2" }, "dependencies": { + "cacache": "^15.2.0", "node-fetch": "2.6.1" }, "husky": { diff --git a/test/tests.js b/test/tests.js index 27cc0f5..e39bd36 100644 --- a/test/tests.js +++ b/test/tests.js @@ -447,4 +447,22 @@ describe('File system cache tests', function() { assert.strictEqual(expectedPngBuffer.equals(body), true); assert.strictEqual(res.fromCache, true); }); + + it('Can eject from cache', async function() { + cachedFetch = FetchCache.withCache(new FileSystemCache()); + + res = await cachedFetch(TWO_HUNDRED_URL); + assert.strictEqual(res.fromCache, false); + + res = await cachedFetch(TWO_HUNDRED_URL); + assert.strictEqual(res.fromCache, true); + + await res.ejectFromCache(); + + res = await cachedFetch(TWO_HUNDRED_URL); + assert.strictEqual(res.fromCache, false); + + res = await cachedFetch(TWO_HUNDRED_URL); + assert.strictEqual(res.fromCache, true); + }); });