mirror of https://github.com/webpack/webpack.git
1359 lines
36 KiB
JavaScript
1359 lines
36 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const resolve = require("enhanced-resolve");
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const asyncLib = require("neo-async");
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const AsyncQueue = require("./util/AsyncQueue");
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const createHash = require("./util/createHash");
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const { join, dirname, relative } = require("./util/fs");
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/** @typedef {import("./WebpackError")} WebpackError */
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/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
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const resolveContext = resolve.create({
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resolveToContext: true
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});
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let FS_ACCURACY = 2000;
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const RBDT_RESOLVE = 0;
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const RBDT_RESOLVE_DIRECTORY = 1;
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const RBDT_RESOLVE_FILE = 2;
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const RBDT_DIRECTORY = 3;
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const RBDT_FILE = 4;
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const RBDT_DIRECTORY_DEPENDENCIES = 5;
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const RBDT_FILE_DEPENDENCIES = 6;
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const INVALID = Symbol("invalid");
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/**
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* @typedef {Object} FileSystemInfoEntry
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* @property {number} safeTime
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* @property {number=} timestamp
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* @property {string=} timestampHash
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*/
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/**
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* @typedef {Object} Snapshot
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* @property {number=} startTime
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* @property {Map<string, FileSystemInfoEntry | "error">=} fileTimestamps
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* @property {Map<string, string | "error">=} fileHashes
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* @property {Map<string, FileSystemInfoEntry | "error">=} contextTimestamps
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* @property {Map<string, string | "error">=} contextHashes
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* @property {Map<string, FileSystemInfoEntry | "error">=} missingTimestamps
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* @property {Map<string, string | "error">=} managedItemInfo
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*/
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/**
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* @typedef {Object} ResolveBuildDependenciesResult
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* @property {Set<string>} files list of files
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* @property {Set<string>} directories list of directories
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* @property {Set<string>} missing list of missing entries
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* @property {Map<string, string>} resolveResults stored resolve results
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* @property {Object} resolveDependencies dependencies of the resolving
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* @property {Set<string>} resolveDependencies.files list of files
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* @property {Set<string>} resolveDependencies.directories list of directories
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* @property {Set<string>} resolveDependencies.missing list of missing entries
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*/
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/**
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* istanbul ignore next
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* @param {number} mtime mtime
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*/
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const applyMtime = mtime => {
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if (FS_ACCURACY > 1 && mtime % 2 !== 0) FS_ACCURACY = 1;
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else if (FS_ACCURACY > 10 && mtime % 20 !== 0) FS_ACCURACY = 10;
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else if (FS_ACCURACY > 100 && mtime % 200 !== 0) FS_ACCURACY = 100;
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else if (FS_ACCURACY > 1000 && mtime % 2000 !== 0) FS_ACCURACY = 1000;
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};
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/**
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* @template T
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* @template K
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* @param {Map<T, K>} a source map
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* @param {Map<T, K>} b joining map
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* @returns {Map<T, K>} joined map
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*/
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const mergeMaps = (a, b) => {
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if (!b || b.size === 0) return a;
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if (!a || a.size === 0) return b;
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const map = new Map(a);
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for (const [key, value] of b) {
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map.set(key, value);
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}
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return map;
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};
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/**
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* Finding file or directory to manage
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* @param {string} managedPath path that is managing by {@link FileSystemInfo}
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* @param {string} path path to file or directory
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* @returns {string|null} managed item
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* @example
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* getManagedItem(
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* '/Users/user/my-project/node_modules/',
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* '/Users/user/my-project/node_modules/package/index.js'
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* ) === '/Users/user/my-project/node_modules/package'
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* getManagedItem(
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* '/Users/user/my-project/node_modules/',
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* '/Users/user/my-project/node_modules/package1/node_modules/package2'
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* ) === '/Users/user/my-project/node_modules/package1/node_modules/package2'
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* getManagedItem(
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* '/Users/user/my-project/node_modules/',
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* '/Users/user/my-project/node_modules/.bin/script.js'
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* ) === null // hidden files are disallowed as managed items
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* getManagedItem(
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* '/Users/user/my-project/node_modules/',
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* '/Users/user/my-project/node_modules/package'
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* ) === '/Users/user/my-project/node_modules/package'
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*/
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const getManagedItem = (managedPath, path) => {
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let i = managedPath.length;
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let slashes = 1;
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let startingPosition = true;
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loop: while (i < path.length) {
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switch (path.charCodeAt(i)) {
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case 47: // slash
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case 92: // backslash
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if (--slashes === 0) break loop;
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startingPosition = true;
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break;
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case 46: // .
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// hidden files are disallowed as managed items
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// it's probably .yarn-integrity or .cache
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if (startingPosition) return null;
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break;
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case 64: // @
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if (!startingPosition) return null;
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slashes++;
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break;
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default:
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startingPosition = false;
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break;
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}
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i++;
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}
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if (i === path.length) slashes--;
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// return null when path is incomplete
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if (slashes !== 0) return null;
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// if (path.slice(i + 1, i + 13) === "node_modules")
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if (
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path.charCodeAt(i + 1) === 110 &&
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path.charCodeAt(i + 2) === 111 &&
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path.charCodeAt(i + 3) === 100 &&
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path.charCodeAt(i + 4) === 101 &&
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path.charCodeAt(i + 5) === 95 &&
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path.charCodeAt(i + 6) === 109 &&
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path.charCodeAt(i + 7) === 111 &&
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path.charCodeAt(i + 8) === 100 &&
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path.charCodeAt(i + 9) === 117 &&
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path.charCodeAt(i + 10) === 108 &&
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path.charCodeAt(i + 11) === 101 &&
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path.charCodeAt(i + 12) === 115
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) {
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const c = path.charCodeAt(i + 13);
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// if next symbol is slash or backslash
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if (c === 47 || c === 92) {
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// Managed subpath
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return getManagedItem(path.slice(0, i + 14), path);
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}
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}
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return path.slice(0, i);
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};
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/**
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* Used to access information about the filesystem in a cached way
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*/
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class FileSystemInfo {
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/**
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* @param {InputFileSystem} fs file system
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* @param {Object} options options
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* @param {Iterable<string>=} options.managedPaths paths that are only managed by a package manager
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* @param {Iterable<string>=} options.immutablePaths paths that are immutable
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*/
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constructor(fs, { managedPaths = [], immutablePaths = [] } = {}) {
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this.fs = fs;
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/** @type {Map<string, FileSystemInfoEntry | null>} */
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this._fileTimestamps = new Map();
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/** @type {Map<string, string>} */
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this._fileHashes = new Map();
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/** @type {Map<string, FileSystemInfoEntry | null>} */
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this._contextTimestamps = new Map();
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/** @type {Map<string, string>} */
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this._contextHashes = new Map();
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/** @type {Map<string, string>} */
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this._managedItems = new Map();
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this.fileTimestampQueue = new AsyncQueue({
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name: "file timestamp",
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parallelism: 30,
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processor: this._readFileTimestamp.bind(this)
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});
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this.fileHashQueue = new AsyncQueue({
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name: "file hash",
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parallelism: 10,
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processor: this._readFileHash.bind(this)
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});
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this.contextTimestampQueue = new AsyncQueue({
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name: "context timestamp",
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parallelism: 2,
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processor: this._readContextTimestamp.bind(this)
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});
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this.contextHashQueue = new AsyncQueue({
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name: "context hash",
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parallelism: 2,
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processor: this._readContextHash.bind(this)
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});
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this.managedItemQueue = new AsyncQueue({
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name: "managed item info",
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parallelism: 10,
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processor: this._getManagedItemInfo.bind(this)
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});
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this.managedPaths = Array.from(managedPaths);
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this.managedPathsWithSlash = this.managedPaths.map(p =>
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join(fs, p, "_").slice(0, -1)
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);
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this.immutablePaths = Array.from(immutablePaths);
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this.immutablePathsWithSlash = this.immutablePaths.map(p =>
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join(fs, p, "_").slice(0, -1)
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);
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}
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/**
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* @param {Map<string, FileSystemInfoEntry | null>} map timestamps
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* @returns {void}
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*/
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addFileTimestamps(map) {
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for (const [path, ts] of map) {
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this._fileTimestamps.set(path, ts);
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}
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}
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/**
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* @param {Map<string, FileSystemInfoEntry | null>} map timestamps
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* @returns {void}
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*/
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addContextTimestamps(map) {
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for (const [path, ts] of map) {
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this._contextTimestamps.set(path, ts);
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}
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}
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/**
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* @param {string} path file path
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* @param {function(WebpackError=, FileSystemInfoEntry=): void} callback callback function
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* @returns {void}
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*/
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getFileTimestamp(path, callback) {
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const cache = this._fileTimestamps.get(path);
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if (cache !== undefined) return callback(null, cache);
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this.fileTimestampQueue.add(path, callback);
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}
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/**
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* @param {string} path context path
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* @param {function(WebpackError=, FileSystemInfoEntry=): void} callback callback function
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* @returns {void}
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*/
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getContextTimestamp(path, callback) {
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const cache = this._contextTimestamps.get(path);
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if (cache !== undefined) return callback(null, cache);
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this.contextTimestampQueue.add(path, callback);
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}
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/**
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* @param {string} path file path
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* @param {function(WebpackError=, string=): void} callback callback function
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* @returns {void}
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*/
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getFileHash(path, callback) {
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const cache = this._fileHashes.get(path);
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if (cache !== undefined) return callback(null, cache);
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this.fileHashQueue.add(path, callback);
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}
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/**
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* @param {string} path context path
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* @param {function(WebpackError=, string=): void} callback callback function
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* @returns {void}
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*/
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getContextHash(path, callback) {
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const cache = this._contextHashes.get(path);
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if (cache !== undefined) return callback(null, cache);
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this.contextHashQueue.add(path, callback);
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}
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/**
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* @param {string} context context directory
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* @param {Iterable<string>} deps dependencies
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* @param {function(Error=, ResolveBuildDependenciesResult=): void} callback callback function
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* @returns {void}
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*/
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resolveBuildDependencies(context, deps, callback) {
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/** @type {Set<string>} */
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const files = new Set();
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/** @type {Set<string>} */
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const directories = new Set();
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/** @type {Set<string>} */
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const missing = new Set();
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/** @type {Set<string>} */
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const resolveFiles = new Set();
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/** @type {Set<string>} */
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const resolveDirectories = new Set();
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/** @type {Set<string>} */
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const resolveMissing = new Set();
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/** @type {Map<string, string>} */
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const resolveResults = new Map();
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/** @type {asyncLib.QueueObject<{type: number, path: string, context?: string, expected?: string }, Error>} */
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const queue = asyncLib.queue(
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({ type, context, path, expected }, callback) => {
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const resolveDirectory = path => {
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const key = `d\n${context}\n${path}`;
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if (resolveResults.has(key)) {
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return callback();
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}
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resolveContext(
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context,
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path,
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{
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fileDependencies: resolveFiles,
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contextDependencies: resolveDirectories,
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missingDependencies: resolveMissing
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},
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(err, result) => {
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if (err) {
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if (
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err.code === "ENOENT" ||
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err.code === "UNDECLARED_DEPENDENCY"
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)
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return callback();
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return callback(err);
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}
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resolveResults.set(key, result);
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queue.push({
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type: RBDT_DIRECTORY,
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path: result
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});
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callback();
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}
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);
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};
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const resolveFile = path => {
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const key = `f\n${context}\n${path}`;
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if (resolveResults.has(key)) {
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return callback();
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}
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resolve(
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context,
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path,
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{
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fileDependencies: resolveFiles,
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contextDependencies: resolveDirectories,
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missingDependencies: resolveMissing
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},
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(err, result) => {
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if (expected) {
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if (result === expected) {
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resolveResults.set(key, result);
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}
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} else {
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if (err) {
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if (
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err.code === "ENOENT" ||
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err.code === "UNDECLARED_DEPENDENCY"
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)
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return callback();
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return callback(err);
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}
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resolveResults.set(key, result);
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queue.push({
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type: RBDT_FILE,
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path: result
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});
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}
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callback();
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}
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);
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};
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switch (type) {
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case RBDT_RESOLVE: {
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const isDirectory = /[\\/]$/.test(path);
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if (isDirectory) {
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resolveDirectory(path.slice(0, path.length - 1));
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} else {
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resolveFile(path);
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}
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break;
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}
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case RBDT_RESOLVE_DIRECTORY: {
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resolveDirectory(path);
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break;
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}
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case RBDT_RESOLVE_FILE: {
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resolveFile(path);
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break;
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}
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case RBDT_FILE: {
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if (files.has(path)) {
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callback();
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break;
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}
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this.fs.realpath(path, (err, realPath) => {
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if (err) return callback(err);
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if (realPath !== path) {
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resolveFiles.add(path);
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}
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if (!files.has(realPath)) {
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files.add(realPath);
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queue.push({
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type: RBDT_FILE_DEPENDENCIES,
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path: realPath
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});
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}
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callback();
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});
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break;
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}
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case RBDT_DIRECTORY: {
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if (directories.has(path)) {
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callback();
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break;
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}
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this.fs.realpath(path, (err, realPath) => {
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if (err) return callback(err);
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if (realPath !== path) {
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resolveFiles.add(path);
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}
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if (!directories.has(realPath)) {
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directories.add(realPath);
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queue.push({
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type: RBDT_DIRECTORY_DEPENDENCIES,
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path: realPath
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});
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}
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callback();
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});
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break;
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}
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case RBDT_FILE_DEPENDENCIES: {
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/** @type {NodeModule} */
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const module = require.cache[path];
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if (module && Array.isArray(module.children)) {
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children: for (const child of module.children) {
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let childPath = child.filename;
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if (childPath) {
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queue.push({
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type: RBDT_FILE,
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path: childPath
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});
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if (childPath.endsWith(".js"))
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childPath = childPath.slice(0, -3);
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const context = dirname(this.fs, path);
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for (const modulePath of module.paths) {
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if (childPath.startsWith(modulePath)) {
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const request = childPath.slice(modulePath.length + 1);
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queue.push({
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type: RBDT_RESOLVE_FILE,
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context,
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path: request,
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expected: childPath
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});
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continue children;
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}
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}
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let request = relative(this.fs, context, childPath);
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request = request.replace(/\\/g, "/");
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if (!request.startsWith("../")) request = `./${request}`;
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queue.push({
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type: RBDT_RESOLVE_FILE,
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context,
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path: request,
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expected: child.filename
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});
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}
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}
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} else {
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// Unable to get dependencies from module system
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// This may be because of an incomplete require.cache implementation like in jest
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// Assume requires stay in directory and add the whole directory
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const directory = dirname(this.fs, path);
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queue.push({
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type: RBDT_DIRECTORY,
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path: directory
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});
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}
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callback();
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break;
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}
|
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case RBDT_DIRECTORY_DEPENDENCIES: {
|
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const match = /(^.+[\\/]node_modules[\\/](?:@[^\\/]+[\\/])?[^\\/]+)/.exec(
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path
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);
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const packagePath = match ? match[1] : path;
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const packageJson = join(this.fs, packagePath, "package.json");
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this.fs.readFile(packageJson, (err, content) => {
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if (err) {
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if (err.code === "ENOENT") {
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resolveMissing.add(packageJson);
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const parent = dirname(this.fs, packagePath);
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if (parent !== packagePath) {
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queue.push({
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type: RBDT_DIRECTORY_DEPENDENCIES,
|
|
path: parent
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});
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}
|
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callback();
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return;
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}
|
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return callback(err);
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}
|
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resolveFiles.add(packageJson);
|
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let packageData;
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try {
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packageData = JSON.parse(content.toString("utf-8"));
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} catch (e) {
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return callback(e);
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}
|
|
const depsObject = packageData.dependencies;
|
|
if (typeof depsObject === "object" && depsObject) {
|
|
for (const dep of Object.keys(depsObject)) {
|
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queue.push({
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type: RBDT_RESOLVE_DIRECTORY,
|
|
context: packagePath,
|
|
path: dep
|
|
});
|
|
}
|
|
}
|
|
callback();
|
|
});
|
|
break;
|
|
}
|
|
}
|
|
},
|
|
50
|
|
);
|
|
queue.drain = () => {
|
|
callback(null, {
|
|
files,
|
|
directories,
|
|
missing,
|
|
resolveResults,
|
|
resolveDependencies: {
|
|
files: resolveFiles,
|
|
directories: resolveDirectories,
|
|
missing: resolveMissing
|
|
}
|
|
});
|
|
};
|
|
queue.error = err => {
|
|
callback(err);
|
|
callback = () => {};
|
|
};
|
|
let jobQueued = false;
|
|
for (const dep of deps) {
|
|
queue.push({
|
|
type: RBDT_RESOLVE,
|
|
context,
|
|
path: dep
|
|
});
|
|
jobQueued = true;
|
|
}
|
|
if (!jobQueued) {
|
|
// queue won't call drain when no jobs are queue
|
|
queue.drain();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Map<string, string>} resolveResults results from resolving
|
|
* @param {function(Error=, boolean=): void} callback callback with true when resolveResults resolve the same way
|
|
* @returns {void}
|
|
*/
|
|
checkResolveResultsValid(resolveResults, callback) {
|
|
asyncLib.eachLimit(
|
|
resolveResults,
|
|
20,
|
|
([key, expectedResult], callback) => {
|
|
const [type, context, path] = key.split("\n");
|
|
switch (type) {
|
|
case "d":
|
|
resolveContext(context, path, (err, result) => {
|
|
if (err) return callback(err);
|
|
if (result !== expectedResult) return callback(INVALID);
|
|
callback();
|
|
});
|
|
break;
|
|
case "f":
|
|
resolve(context, path, (err, result) => {
|
|
if (err) return callback(err);
|
|
if (result !== expectedResult) return callback(INVALID);
|
|
callback();
|
|
});
|
|
break;
|
|
default:
|
|
callback(new Error("Unexpected type in resolve result key"));
|
|
break;
|
|
}
|
|
},
|
|
/**
|
|
* @param {Error | typeof INVALID=} err error or invalid flag
|
|
* @returns {void}
|
|
*/
|
|
err => {
|
|
if (err === INVALID) {
|
|
return callback(null, false);
|
|
}
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
return callback(null, true);
|
|
}
|
|
);
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {number} startTime when processing the files has started
|
|
* @param {Iterable<string>} files all files
|
|
* @param {Iterable<string>} directories all directories
|
|
* @param {Iterable<string>} missing all missing files or directories
|
|
* @param {Object} options options object (for future extensions)
|
|
* @param {function(WebpackError=, Snapshot=): void} callback callback function
|
|
* @returns {void}
|
|
*/
|
|
createSnapshot(startTime, files, directories, missing, options, callback) {
|
|
/** @type {Map<string, FileSystemInfoEntry | "error">} */
|
|
const fileTimestamps = new Map();
|
|
/** @type {Map<string, string | "error">} */
|
|
const fileHashes = new Map();
|
|
/** @type {Map<string, FileSystemInfoEntry | "error">} */
|
|
const contextTimestamps = new Map();
|
|
/** @type {Map<string, string | "error">} */
|
|
const contextHashes = new Map();
|
|
/** @type {Map<string, FileSystemInfoEntry | "error">} */
|
|
const missingTimestamps = new Map();
|
|
/** @type {Map<string, string | "error">} */
|
|
const managedItemInfo = new Map();
|
|
|
|
const managedItems = new Set();
|
|
|
|
let jobs = 1;
|
|
const jobDone = () => {
|
|
if (--jobs === 0) {
|
|
const snapshot = {};
|
|
if (startTime) snapshot.startTime = startTime;
|
|
if (fileTimestamps.size !== 0) snapshot.fileTimestamps = fileTimestamps;
|
|
if (fileHashes.size !== 0) snapshot.fileHashes = fileHashes;
|
|
if (contextTimestamps.size !== 0)
|
|
snapshot.contextTimestamps = contextTimestamps;
|
|
if (contextHashes.size !== 0) snapshot.contextHashes = contextHashes;
|
|
if (missingTimestamps.size !== 0)
|
|
snapshot.missingTimestamps = missingTimestamps;
|
|
if (managedItemInfo.size !== 0)
|
|
snapshot.managedItemInfo = managedItemInfo;
|
|
callback(null, snapshot);
|
|
}
|
|
};
|
|
if (files) {
|
|
if (options && options.hash) {
|
|
files: for (const path of files) {
|
|
for (const immutablePath of this.immutablePathsWithSlash) {
|
|
if (path.startsWith(immutablePath)) {
|
|
continue files;
|
|
}
|
|
}
|
|
for (const managedPath of this.managedPathsWithSlash) {
|
|
if (path.startsWith(managedPath)) {
|
|
const managedItem = getManagedItem(managedPath, path);
|
|
if (managedItem) {
|
|
managedItems.add(managedItem);
|
|
continue files;
|
|
}
|
|
}
|
|
}
|
|
const cache = this._fileHashes.get(path);
|
|
if (cache !== undefined) {
|
|
fileHashes.set(path, cache);
|
|
} else {
|
|
jobs++;
|
|
this.fileHashQueue.add(path, (err, entry) => {
|
|
if (err) {
|
|
fileHashes.set(path, "error");
|
|
} else {
|
|
fileHashes.set(path, entry);
|
|
}
|
|
jobDone();
|
|
});
|
|
}
|
|
}
|
|
} else {
|
|
files: for (const path of files) {
|
|
for (const immutablePath of this.immutablePathsWithSlash) {
|
|
if (path.startsWith(immutablePath)) {
|
|
continue files;
|
|
}
|
|
}
|
|
for (const managedPath of this.managedPathsWithSlash) {
|
|
if (path.startsWith(managedPath)) {
|
|
const managedItem = getManagedItem(managedPath, path);
|
|
if (managedItem) {
|
|
managedItems.add(managedItem);
|
|
continue files;
|
|
}
|
|
}
|
|
}
|
|
const cache = this._fileTimestamps.get(path);
|
|
if (cache !== undefined) {
|
|
fileTimestamps.set(path, cache);
|
|
} else {
|
|
jobs++;
|
|
this.fileTimestampQueue.add(path, (err, entry) => {
|
|
if (err) {
|
|
fileTimestamps.set(path, "error");
|
|
} else {
|
|
fileTimestamps.set(path, entry);
|
|
}
|
|
jobDone();
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (directories) {
|
|
if (options && options.hash) {
|
|
directories: for (const path of directories) {
|
|
for (const immutablePath of this.immutablePathsWithSlash) {
|
|
if (path.startsWith(immutablePath)) {
|
|
continue directories;
|
|
}
|
|
}
|
|
for (const managedPath of this.managedPathsWithSlash) {
|
|
if (path.startsWith(managedPath)) {
|
|
const managedItem = getManagedItem(managedPath, path);
|
|
if (managedItem) {
|
|
managedItems.add(managedItem);
|
|
continue directories;
|
|
}
|
|
}
|
|
}
|
|
const cache = this._contextHashes.get(path);
|
|
if (cache !== undefined) {
|
|
contextHashes.set(path, cache);
|
|
} else {
|
|
jobs++;
|
|
this.contextHashQueue.add(path, (err, entry) => {
|
|
if (err) {
|
|
contextHashes.set(path, "error");
|
|
} else {
|
|
contextHashes.set(path, entry);
|
|
}
|
|
jobDone();
|
|
});
|
|
}
|
|
}
|
|
} else {
|
|
directories: for (const path of directories) {
|
|
for (const immutablePath of this.immutablePathsWithSlash) {
|
|
if (path.startsWith(immutablePath)) {
|
|
continue directories;
|
|
}
|
|
}
|
|
for (const managedPath of this.managedPathsWithSlash) {
|
|
if (path.startsWith(managedPath)) {
|
|
const managedItem = getManagedItem(managedPath, path);
|
|
if (managedItem) {
|
|
managedItems.add(managedItem);
|
|
continue directories;
|
|
}
|
|
}
|
|
}
|
|
const cache = this._contextTimestamps.get(path);
|
|
if (cache !== undefined) {
|
|
contextTimestamps.set(path, cache);
|
|
} else {
|
|
jobs++;
|
|
this.contextTimestampQueue.add(path, (err, entry) => {
|
|
if (err) {
|
|
contextTimestamps.set(path, "error");
|
|
} else {
|
|
contextTimestamps.set(path, entry);
|
|
}
|
|
jobDone();
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (missing) {
|
|
missing: for (const path of missing) {
|
|
for (const immutablePath of this.immutablePathsWithSlash) {
|
|
if (path.startsWith(immutablePath)) {
|
|
continue missing;
|
|
}
|
|
}
|
|
for (const managedPath of this.managedPathsWithSlash) {
|
|
if (path.startsWith(managedPath)) {
|
|
const managedItem = getManagedItem(managedPath, path);
|
|
if (managedItem) {
|
|
managedItems.add(managedItem);
|
|
continue missing;
|
|
}
|
|
}
|
|
}
|
|
const cache = this._fileTimestamps.get(path);
|
|
if (cache !== undefined) {
|
|
missingTimestamps.set(path, cache);
|
|
} else {
|
|
jobs++;
|
|
this.fileTimestampQueue.add(path, (err, entry) => {
|
|
if (err) {
|
|
missingTimestamps.set(path, "error");
|
|
} else {
|
|
missingTimestamps.set(path, entry);
|
|
}
|
|
jobDone();
|
|
});
|
|
}
|
|
}
|
|
}
|
|
for (const path of managedItems) {
|
|
const cache = this._managedItems.get(path);
|
|
if (cache !== undefined) {
|
|
managedItemInfo.set(path, cache || "error");
|
|
} else {
|
|
jobs++;
|
|
this.managedItemQueue.add(path, (err, entry) => {
|
|
if (err || !entry) {
|
|
managedItemInfo.set(path, "error");
|
|
} else {
|
|
managedItemInfo.set(path, entry);
|
|
}
|
|
jobDone();
|
|
});
|
|
}
|
|
}
|
|
jobDone();
|
|
}
|
|
|
|
/**
|
|
* @param {Snapshot} snapshot1 a snapshot
|
|
* @param {Snapshot} snapshot2 a snapshot
|
|
* @returns {Snapshot} merged snapshot
|
|
*/
|
|
mergeSnapshots(snapshot1, snapshot2) {
|
|
/** @type {Snapshot} */
|
|
const snapshot = {};
|
|
if (snapshot1.startTime && snapshot2.startTime)
|
|
snapshot.startTime = Math.min(snapshot1.startTime, snapshot2.startTime);
|
|
else if (snapshot2.startTime) snapshot.startTime = snapshot2.startTime;
|
|
else if (snapshot1.startTime) snapshot.startTime = snapshot1.startTime;
|
|
if (snapshot1.fileTimestamps || snapshot2.fileTimestamps) {
|
|
snapshot.fileTimestamps = mergeMaps(
|
|
snapshot1.fileTimestamps,
|
|
snapshot2.fileTimestamps
|
|
);
|
|
}
|
|
if (snapshot1.fileHashes || snapshot2.fileHashes) {
|
|
snapshot.fileHashes = mergeMaps(
|
|
snapshot1.fileHashes,
|
|
snapshot2.fileHashes
|
|
);
|
|
}
|
|
if (snapshot1.contextTimestamps || snapshot2.contextTimestamps) {
|
|
snapshot.contextTimestamps = mergeMaps(
|
|
snapshot1.contextTimestamps,
|
|
snapshot2.contextTimestamps
|
|
);
|
|
}
|
|
if (snapshot1.contextHashes || snapshot2.contextHashes) {
|
|
snapshot.contextHashes = mergeMaps(
|
|
snapshot1.contextHashes,
|
|
snapshot2.contextHashes
|
|
);
|
|
}
|
|
if (snapshot1.missingTimestamps || snapshot2.missingTimestamps) {
|
|
snapshot.missingTimestamps = mergeMaps(
|
|
snapshot1.missingTimestamps,
|
|
snapshot2.missingTimestamps
|
|
);
|
|
}
|
|
if (snapshot1.managedItemInfo || snapshot2.managedItemInfo) {
|
|
snapshot.managedItemInfo = mergeMaps(
|
|
snapshot1.managedItemInfo,
|
|
snapshot2.managedItemInfo
|
|
);
|
|
}
|
|
return snapshot;
|
|
}
|
|
|
|
/**
|
|
* @param {Snapshot} snapshot the snapshot made
|
|
* @param {function(WebpackError=, boolean=): void} callback callback function
|
|
* @returns {void}
|
|
*/
|
|
checkSnapshotValid(snapshot, callback) {
|
|
const {
|
|
startTime,
|
|
fileTimestamps,
|
|
fileHashes,
|
|
contextTimestamps,
|
|
contextHashes,
|
|
missingTimestamps,
|
|
managedItemInfo
|
|
} = snapshot;
|
|
let jobs = 1;
|
|
const jobDone = () => {
|
|
if (--jobs === 0) {
|
|
callback(null, true);
|
|
}
|
|
};
|
|
const invalid = () => {
|
|
if (jobs > 0) {
|
|
jobs = NaN;
|
|
callback(null, false);
|
|
}
|
|
};
|
|
const checkHash = (current, snap) => {
|
|
if (snap === "error") {
|
|
// If there was an error while snapshotting (i. e. EBUSY)
|
|
// we can't compare further data and assume it's invalid
|
|
return false;
|
|
}
|
|
return current === snap;
|
|
};
|
|
/**
|
|
* @param {FileSystemInfoEntry} current current entry
|
|
* @param {FileSystemInfoEntry | "error"} snap entry from snapshot
|
|
* @returns {boolean} true, if ok
|
|
*/
|
|
const checkExistance = (current, snap) => {
|
|
if (snap === "error") {
|
|
// If there was an error while snapshotting (i. e. EBUSY)
|
|
// we can't compare further data and assume it's invalid
|
|
return false;
|
|
}
|
|
return !current === !snap;
|
|
};
|
|
/**
|
|
* @param {FileSystemInfoEntry} current current entry
|
|
* @param {FileSystemInfoEntry | "error"} snap entry from snapshot
|
|
* @returns {boolean} true, if ok
|
|
*/
|
|
const checkFile = (current, snap) => {
|
|
if (snap === "error") {
|
|
// If there was an error while snapshotting (i. e. EBUSY)
|
|
// we can't compare further data and assume it's invalid
|
|
return false;
|
|
}
|
|
if (current && current.safeTime > startTime) {
|
|
// If a change happened after starting reading the item
|
|
// this may no longer be valid
|
|
return false;
|
|
}
|
|
if (!current !== !snap) {
|
|
// If existance of item differs
|
|
// it's invalid
|
|
return false;
|
|
}
|
|
if (current) {
|
|
// For existing items only
|
|
if (
|
|
snap.timestamp !== undefined &&
|
|
current.timestamp !== snap.timestamp
|
|
) {
|
|
// If we have a timestamp (it was a file or symlink) and it differs from current timestamp
|
|
// it's invalid
|
|
return false;
|
|
}
|
|
if (
|
|
snap.timestampHash !== undefined &&
|
|
current.timestampHash !== snap.timestampHash
|
|
) {
|
|
// If we have a timestampHash (it was a directory) and it differs from current timestampHash
|
|
// it's invalid
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
};
|
|
if (fileTimestamps) {
|
|
for (const [path, ts] of fileTimestamps) {
|
|
const cache = this._fileTimestamps.get(path);
|
|
if (cache !== undefined) {
|
|
if (!checkFile(cache, ts)) {
|
|
invalid();
|
|
}
|
|
} else {
|
|
jobs++;
|
|
this.fileTimestampQueue.add(path, (err, entry) => {
|
|
if (err) return invalid();
|
|
if (!checkFile(entry, ts)) {
|
|
invalid();
|
|
} else {
|
|
jobDone();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
if (fileHashes) {
|
|
for (const [path, hash] of fileHashes) {
|
|
const cache = this._fileHashes.get(path);
|
|
if (cache !== undefined) {
|
|
if (!checkHash(cache, hash)) {
|
|
invalid();
|
|
}
|
|
} else {
|
|
jobs++;
|
|
this.fileHashQueue.add(path, (err, entry) => {
|
|
if (err) return invalid();
|
|
if (!checkHash(entry, hash)) {
|
|
invalid();
|
|
} else {
|
|
jobDone();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
if (contextTimestamps && contextTimestamps.size > 0) {
|
|
for (const [path, ts] of contextTimestamps) {
|
|
const cache = this._contextTimestamps.get(path);
|
|
if (cache !== undefined) {
|
|
if (!checkFile(cache, ts)) {
|
|
invalid();
|
|
}
|
|
} else {
|
|
jobs++;
|
|
this.contextTimestampQueue.add(path, (err, entry) => {
|
|
if (err) return invalid();
|
|
if (!checkFile(entry, ts)) {
|
|
invalid();
|
|
} else {
|
|
jobDone();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
if (contextHashes) {
|
|
for (const [path, hash] of contextHashes) {
|
|
const cache = this._contextHashes.get(path);
|
|
if (cache !== undefined) {
|
|
if (!checkHash(cache, hash)) {
|
|
invalid();
|
|
}
|
|
} else {
|
|
jobs++;
|
|
this.contextHashQueue.add(path, (err, entry) => {
|
|
if (err) return invalid();
|
|
if (!checkHash(entry, hash)) {
|
|
invalid();
|
|
} else {
|
|
jobDone();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
if (missingTimestamps) {
|
|
for (const [path, ts] of missingTimestamps) {
|
|
const cache = this._fileTimestamps.get(path);
|
|
if (cache !== undefined) {
|
|
if (!checkExistance(cache, ts)) {
|
|
invalid();
|
|
}
|
|
} else {
|
|
jobs++;
|
|
this.fileTimestampQueue.add(path, (err, entry) => {
|
|
if (err) return invalid();
|
|
if (!checkExistance(entry, ts)) {
|
|
invalid();
|
|
} else {
|
|
jobDone();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
if (managedItemInfo) {
|
|
for (const [path, info] of managedItemInfo) {
|
|
const cache = this._managedItems.get(path);
|
|
if (cache !== undefined) {
|
|
if (!checkHash(cache, info)) {
|
|
invalid();
|
|
}
|
|
} else {
|
|
jobs++;
|
|
this.managedItemQueue.add(path, (err, entry) => {
|
|
if (err) return invalid();
|
|
if (!checkHash(entry, info)) {
|
|
invalid();
|
|
} else {
|
|
jobDone();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
jobDone();
|
|
}
|
|
|
|
_readFileTimestamp(path, callback) {
|
|
this.fs.stat(path, (err, stat) => {
|
|
if (err) {
|
|
if (err.code === "ENOENT") {
|
|
this._fileTimestamps.set(path, null);
|
|
return callback(null, null);
|
|
}
|
|
return callback(err);
|
|
}
|
|
|
|
const mtime = +stat.mtime;
|
|
|
|
if (mtime) applyMtime(mtime);
|
|
|
|
const ts = {
|
|
safeTime: mtime ? mtime + FS_ACCURACY : Infinity,
|
|
timestamp: stat.isDirectory() ? undefined : mtime
|
|
};
|
|
|
|
this._fileTimestamps.set(path, ts);
|
|
|
|
callback(null, ts);
|
|
});
|
|
}
|
|
|
|
_readFileHash(path, callback) {
|
|
this.fs.readFile(path, (err, content) => {
|
|
if (err) {
|
|
if (err.code === "ENOENT") {
|
|
this._fileHashes.set(path, null);
|
|
return callback(null, null);
|
|
}
|
|
return callback(err);
|
|
}
|
|
|
|
const hash = createHash("md4");
|
|
|
|
hash.update(content);
|
|
|
|
const digest = /** @type {string} */ (hash.digest("hex"));
|
|
|
|
this._fileHashes.set(path, digest);
|
|
|
|
callback(null, digest);
|
|
});
|
|
}
|
|
|
|
_readContextTimestamp(path, callback) {
|
|
this.fs.readdir(path, (err, files) => {
|
|
if (err) {
|
|
if (err.code === "ENOENT") {
|
|
this._contextTimestamps.set(path, null);
|
|
return callback(null, null);
|
|
}
|
|
return callback(err);
|
|
}
|
|
files = files
|
|
.map(file => file.normalize("NFC"))
|
|
.filter(file => !/^\./.test(file))
|
|
.sort();
|
|
asyncLib.map(
|
|
files,
|
|
(file, callback) => {
|
|
const child = join(this.fs, path, file);
|
|
this.fs.stat(child, (err, stat) => {
|
|
if (err) return callback(err);
|
|
|
|
for (const immutablePath of this.immutablePathsWithSlash) {
|
|
if (path.startsWith(immutablePath)) {
|
|
// ignore any immutable path for timestamping
|
|
return callback(null, null);
|
|
}
|
|
}
|
|
for (const managedPath of this.managedPathsWithSlash) {
|
|
if (path.startsWith(managedPath)) {
|
|
const managedItem = getManagedItem(managedPath, child);
|
|
if (managedItem) {
|
|
// construct timestampHash from managed info
|
|
return this.managedItemQueue.add(child, (err, info) => {
|
|
if (err) return callback(err);
|
|
return callback(null, {
|
|
safeTime: 0,
|
|
timestampHash: info
|
|
});
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
if (stat.isFile()) {
|
|
return this.getFileTimestamp(child, callback);
|
|
}
|
|
if (stat.isDirectory()) {
|
|
this.contextTimestampQueue.increaseParallelism();
|
|
this.getContextTimestamp(child, (err, tsEntry) => {
|
|
this.contextTimestampQueue.decreaseParallelism();
|
|
callback(err, tsEntry);
|
|
});
|
|
return;
|
|
}
|
|
callback(null, null);
|
|
});
|
|
},
|
|
(err, tsEntries) => {
|
|
if (err) return callback(err);
|
|
const hash = createHash("md4");
|
|
|
|
for (const file of files) hash.update(file);
|
|
let safeTime = 0;
|
|
for (const entry of tsEntries) {
|
|
if (!entry) {
|
|
hash.update("n");
|
|
continue;
|
|
}
|
|
if (entry.timestamp) {
|
|
hash.update("f");
|
|
hash.update(`${entry.timestamp}`);
|
|
} else if (entry.timestampHash) {
|
|
hash.update("d");
|
|
hash.update(`${entry.timestampHash}`);
|
|
}
|
|
if (entry.safeTime) {
|
|
safeTime = Math.max(safeTime, entry.safeTime);
|
|
}
|
|
}
|
|
|
|
const digest = /** @type {string} */ (hash.digest("hex"));
|
|
|
|
const result = {
|
|
safeTime,
|
|
timestampHash: digest
|
|
};
|
|
|
|
this._contextTimestamps.set(path, result);
|
|
|
|
callback(null, result);
|
|
}
|
|
);
|
|
});
|
|
}
|
|
|
|
_readContextHash(path, callback) {
|
|
this.fs.readdir(path, (err, files) => {
|
|
if (err) {
|
|
if (err.code === "ENOENT") {
|
|
this._contextHashes.set(path, null);
|
|
return callback(null, null);
|
|
}
|
|
return callback(err);
|
|
}
|
|
files = files
|
|
.map(file => file.normalize("NFC"))
|
|
.filter(file => !/^\./.test(file))
|
|
.sort();
|
|
asyncLib.map(
|
|
files,
|
|
(file, callback) => {
|
|
const child = join(this.fs, path, file);
|
|
this.fs.stat(child, (err, stat) => {
|
|
if (err) return callback(err);
|
|
|
|
for (const immutablePath of this.immutablePathsWithSlash) {
|
|
if (path.startsWith(immutablePath)) {
|
|
// ignore any immutable path for hashing
|
|
return callback(null, "");
|
|
}
|
|
}
|
|
for (const managedPath of this.managedPathsWithSlash) {
|
|
if (path.startsWith(managedPath)) {
|
|
const managedItem = getManagedItem(managedPath, child);
|
|
if (managedItem) {
|
|
// construct hash from managed info
|
|
return this.managedItemQueue.add(child, (err, info) => {
|
|
if (err) return callback(err);
|
|
callback(null, info || "");
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
if (stat.isFile()) {
|
|
return this.getFileHash(child, (err, hash) => {
|
|
callback(err, hash || "");
|
|
});
|
|
}
|
|
if (stat.isDirectory()) {
|
|
this.contextHashQueue.increaseParallelism();
|
|
this.getContextHash(child, (err, hash) => {
|
|
this.contextHashQueue.decreaseParallelism();
|
|
callback(err, hash || "");
|
|
});
|
|
return;
|
|
}
|
|
callback(null, "");
|
|
});
|
|
},
|
|
(err, fileHashes) => {
|
|
if (err) return callback(err);
|
|
const hash = createHash("md4");
|
|
|
|
for (const file of files) hash.update(file);
|
|
for (const h of fileHashes) hash.update(h);
|
|
|
|
const digest = /** @type {string} */ (hash.digest("hex"));
|
|
|
|
this._contextHashes.set(path, digest);
|
|
|
|
callback(null, digest);
|
|
}
|
|
);
|
|
});
|
|
}
|
|
|
|
_getManagedItemInfo(path, callback) {
|
|
const packageJsonPath = join(this.fs, path, "package.json");
|
|
this.fs.readFile(packageJsonPath, (err, content) => {
|
|
if (err) {
|
|
if (err.code === "ENOENT" || err.code === "ENOTDIR") {
|
|
// no package.json or path is not a directory
|
|
this._managedItems.set(path, null);
|
|
return callback(null, null);
|
|
}
|
|
return callback(err);
|
|
}
|
|
let data;
|
|
try {
|
|
data = JSON.parse(content.toString("utf-8"));
|
|
} catch (e) {
|
|
return callback(e);
|
|
}
|
|
const info = `${data.name || ""}@${data.version || ""}`;
|
|
this._managedItems.set(path, info);
|
|
callback(null, info);
|
|
});
|
|
}
|
|
|
|
getDeprecatedFileTimestamps() {
|
|
const map = new Map();
|
|
for (const [path, info] of this._fileTimestamps) {
|
|
if (info) map.set(path, info.safeTime);
|
|
}
|
|
return map;
|
|
}
|
|
|
|
getDeprecatedContextTimestamps() {
|
|
const map = new Map();
|
|
for (const [path, info] of this._contextTimestamps) {
|
|
if (info) map.set(path, info.safeTime);
|
|
}
|
|
return map;
|
|
}
|
|
}
|
|
|
|
module.exports = FileSystemInfo;
|