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ImageStorage.js
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"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ImageInPlaceStorage = exports.ImageDirectoryStorage = exports.ImageCacheStorage = void 0;
var path_1 = __importDefault(require("path"));
var promises_1 = __importDefault(require("fs/promises"));
var _1 = require(".");
var lup_root_1 = require("lup-root");
/** Creates a directory with limited size containing the latest used formats. */
var ImageCacheStorage = /** @class */ (function () {
function ImageCacheStorage(options) {
this.cacheDir = path_1.default.resolve(lup_root_1.ROOT, options.cacheDir || _1.OptimizerSettings.DEFAULT_CACHE_DIRECTORY_PATH);
this.cacheSize = (options.cacheSize || _1.OptimizerSettings.DEFAULT_MAX_CACHE_SIZE_MB) * 1000000;
this.cleanUpCache();
}
/**
* Manually enforces cache cleanup.
* In particular, this is useful if cache was manipulated manually.
* By default this is called automatically when a new image is stored in the cache.
*/
ImageCacheStorage.prototype.cleanUpCache = function () {
return __awaiter(this, void 0, void 0, function () {
var promises, oldestFiles, dirSize;
var _this = this;
return __generator(this, function (_a) {
promises = [];
oldestFiles = {};
dirSize = 0;
promises_1.default.readdir(this.cacheDir).then(function (files) { return __awaiter(_this, void 0, void 0, function () {
var _loop_1, this_1, _i, files_1, file, keys, key, _a, filePath, size;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
_loop_1 = function (file) {
var filePath = path_1.default.resolve(this_1.cacheDir, file);
promises.push(promises_1.default.stat(filePath).then(function (stats) {
var time = stats.atimeMs; // access time
while (oldestFiles[time])
time++;
oldestFiles[time] = { filePath: filePath, size: stats.size };
dirSize = dirSize + stats.size;
}));
};
this_1 = this;
for (_i = 0, files_1 = files; _i < files_1.length; _i++) {
file = files_1[_i];
_loop_1(file);
}
// wait for all files being read
return [4 /*yield*/, Promise.all(promises)];
case 1:
// wait for all files being read
_b.sent();
keys = Object.keys(oldestFiles).sort();
while (dirSize > this.cacheSize && keys.length > 0) {
key = keys.splice(0, 1)[0];
_a = oldestFiles[key], filePath = _a.filePath, size = _a.size;
dirSize = dirSize - size;
promises_1.default.rm(filePath, { force: true });
}
return [2 /*return*/];
}
});
}); }).catch(function () { });
return [2 /*return*/];
});
});
};
ImageCacheStorage.prototype.getCacheFilePath = function (filePath, width, format) {
return path_1.default.resolve(this.cacheDir, filePath.substring(lup_root_1.ROOT.length + 1).replaceAll('\\', '--').replaceAll('/', '--') + '-' + width + 'w.' + format);
};
ImageCacheStorage.prototype.getLastModified = function (filePath, width, format) {
return __awaiter(this, void 0, void 0, function () {
var cacheFile;
return __generator(this, function (_a) {
cacheFile = this.getCacheFilePath(filePath, width, format);
return [2 /*return*/, promises_1.default.stat(cacheFile).then(function (stats) { return stats.mtimeMs; }).catch(function () { return null; })];
});
});
};
ImageCacheStorage.prototype.getImage = function (filePath, width, format) {
return __awaiter(this, void 0, void 0, function () {
var originalFileInfo, cacheFile, cachedFileInfo, imageData, ex_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, promises_1.default.stat(filePath)];
case 1:
originalFileInfo = _a.sent();
cacheFile = this.getCacheFilePath(filePath, width, format);
_a.label = 2;
case 2:
_a.trys.push([2, 6, , 7]);
return [4 /*yield*/, promises_1.default.stat(cacheFile)];
case 3:
cachedFileInfo = _a.sent();
if (!(cachedFileInfo.mtime >= originalFileInfo.mtime)) return [3 /*break*/, 5];
return [4 /*yield*/, promises_1.default.readFile(cacheFile)];
case 4:
imageData = _a.sent();
return [2 /*return*/, { imageData: imageData, format: format, mimeType: (_1.OptimizerSettings.FILE_EXTENSION_TO_MIME_TYPE[format] || 'image/' + format) }];
case 5: return [3 /*break*/, 7];
case 6:
ex_1 = _a.sent();
return [3 /*break*/, 7];
case 7: return [2 /*return*/, null];
}
});
});
};
ImageCacheStorage.prototype.putImage = function (filePath, width, format, imageData) {
return __awaiter(this, void 0, void 0, function () {
var cacheFile;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
cacheFile = this.getCacheFilePath(filePath, width, format);
return [4 /*yield*/, promises_1.default.mkdir(this.cacheDir, { recursive: true }).then(function () { return promises_1.default.writeFile(cacheFile, imageData || Buffer.alloc(0)); })];
case 1:
_a.sent();
this.cleanUpCache();
return [2 /*return*/];
}
});
});
};
return ImageCacheStorage;
}());
exports.ImageCacheStorage = ImageCacheStorage;
var ImageDirectoryStorage = /** @class */ (function () {
function ImageDirectoryStorage(options) {
this.dirPath = path_1.default.resolve(lup_root_1.ROOT, options.dirPath);
}
ImageDirectoryStorage.prototype.getStoreFilePath = function (filePath, width, format, create) {
return __awaiter(this, void 0, void 0, function () {
var relFilePath, idx, absFilePath;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
relFilePath = filePath.substring(lup_root_1.ROOT.length + 1);
idx = relFilePath.length - path_1.default.extname(relFilePath).length;
absFilePath = path_1.default.resolve(this.dirPath, relFilePath.substring(0, idx) + '-' + width + 'w.' + format);
if (!create) return [3 /*break*/, 2];
return [4 /*yield*/, promises_1.default.mkdir(absFilePath.substring(0, absFilePath.length - path_1.default.basename(absFilePath).length), { recursive: true }).catch(function (err) { console.error(err); })];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2 /*return*/, absFilePath];
}
});
});
};
ImageDirectoryStorage.prototype.getLastModified = function (filePath, width, format) {
return __awaiter(this, void 0, void 0, function () {
var storedFile;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getStoreFilePath(filePath, width, format, false)];
case 1:
storedFile = _a.sent();
return [2 /*return*/, promises_1.default.stat(storedFile).then(function (stats) { return stats.mtimeMs; }).catch(function () { return null; })];
}
});
});
};
ImageDirectoryStorage.prototype.getImage = function (filePath, width, format) {
return __awaiter(this, void 0, void 0, function () {
var originalFileInfo, storedFile, storeFileInfo, imageData, ex_2;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, promises_1.default.stat(filePath)];
case 1:
originalFileInfo = _a.sent();
return [4 /*yield*/, this.getStoreFilePath(filePath, width, format, false)];
case 2:
storedFile = _a.sent();
_a.label = 3;
case 3:
_a.trys.push([3, 7, , 8]);
return [4 /*yield*/, promises_1.default.stat(storedFile)];
case 4:
storeFileInfo = _a.sent();
if (!(storeFileInfo.mtime >= originalFileInfo.mtime)) return [3 /*break*/, 6];
return [4 /*yield*/, promises_1.default.readFile(storedFile)];
case 5:
imageData = _a.sent();
return [2 /*return*/, { imageData: imageData, format: format, mimeType: (_1.OptimizerSettings.FILE_EXTENSION_TO_MIME_TYPE[format] || 'image/' + format) }];
case 6: return [3 /*break*/, 8];
case 7:
ex_2 = _a.sent();
return [3 /*break*/, 8];
case 8: return [2 /*return*/, null];
}
});
});
};
ImageDirectoryStorage.prototype.putImage = function (filePath, width, format, imageData) {
return __awaiter(this, void 0, void 0, function () {
var storeFile;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getStoreFilePath(filePath, width, format, true)];
case 1:
storeFile = _a.sent();
return [4 /*yield*/, promises_1.default.writeFile(storeFile, imageData || Buffer.alloc(0))];
case 2:
_a.sent();
return [2 /*return*/];
}
});
});
};
return ImageDirectoryStorage;
}());
exports.ImageDirectoryStorage = ImageDirectoryStorage;
/** For each image creates a subdirectory in place that will contain all the different formats. */
var ImageInPlaceStorage = /** @class */ (function () {
function ImageInPlaceStorage() {
}
ImageInPlaceStorage.prototype._getStorageFilePath = function (filePath, width, format, create) {
return __awaiter(this, void 0, void 0, function () {
var parentDir, fileName, extIdx, dirName, dirPath;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
parentDir = path_1.default.resolve(filePath, '..');
fileName = path_1.default.basename(filePath);
extIdx = fileName.lastIndexOf('.');
dirName = '_' + ((extIdx < 0 ? fileName : fileName.substring(0, extIdx)) || 'prerender');
dirPath = path_1.default.resolve(parentDir, dirName);
if (!create) return [3 /*break*/, 2];
return [4 /*yield*/, promises_1.default.mkdir(dirPath, { recursive: true }).catch(function (err) { console.error(err); })];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2 /*return*/, path_1.default.resolve(dirPath, Math.round(width) + 'w.' + format)];
}
});
});
};
ImageInPlaceStorage.prototype.getLastModified = function (filePath, width, format) {
return __awaiter(this, void 0, void 0, function () {
var cacheFile;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this._getStorageFilePath(filePath, width, format, false)];
case 1:
cacheFile = _a.sent();
return [2 /*return*/, promises_1.default.stat(cacheFile).then(function (stats) { return stats.mtimeMs; }).catch(function () { return null; })];
}
});
});
};
ImageInPlaceStorage.prototype.getImage = function (filePath, width, format) {
return __awaiter(this, void 0, void 0, function () {
var originalFileInfo, cacheFile, cachedFileInfo, imageData, ex_3;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, promises_1.default.stat(filePath)];
case 1:
originalFileInfo = _a.sent();
return [4 /*yield*/, this._getStorageFilePath(filePath, width, format, false)];
case 2:
cacheFile = _a.sent();
_a.label = 3;
case 3:
_a.trys.push([3, 7, , 8]);
return [4 /*yield*/, promises_1.default.stat(cacheFile)];
case 4:
cachedFileInfo = _a.sent();
if (!(cachedFileInfo.mtime >= originalFileInfo.mtime)) return [3 /*break*/, 6];
return [4 /*yield*/, promises_1.default.readFile(cacheFile)];
case 5:
imageData = _a.sent();
return [2 /*return*/, { imageData: imageData, format: format, mimeType: (_1.OptimizerSettings.FILE_EXTENSION_TO_MIME_TYPE[format] || 'image/' + format) }];
case 6: return [3 /*break*/, 8];
case 7:
ex_3 = _a.sent();
return [3 /*break*/, 8];
case 8: return [2 /*return*/, null];
}
});
});
};
ImageInPlaceStorage.prototype.putImage = function (filePath, width, format, imageData) {
return __awaiter(this, void 0, void 0, function () {
var cacheFile;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this._getStorageFilePath(filePath, width, format, true)];
case 1:
cacheFile = _a.sent();
return [4 /*yield*/, promises_1.default.writeFile(cacheFile, imageData || Buffer.alloc(0))];
case 2:
_a.sent();
return [2 /*return*/];
}
});
});
};
return ImageInPlaceStorage;
}());
exports.ImageInPlaceStorage = ImageInPlaceStorage;