@tensorflow/tfjs-core
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Hardware-accelerated JavaScript library for machine intelligence
309 lines • 16.1 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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) : new P(function (resolve) { resolve(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 (_) 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 };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var environment_1 = require("../environment");
var io_utils_1 = require("./io_utils");
var model_management_1 = require("./model_management");
var router_registry_1 = require("./router_registry");
var DATABASE_NAME = 'tensorflowjs';
var DATABASE_VERSION = 1;
var MODEL_STORE_NAME = 'models_store';
var INFO_STORE_NAME = 'model_info_store';
function deleteDatabase() {
return __awaiter(this, void 0, void 0, function () {
var idbFactory;
return __generator(this, function (_a) {
idbFactory = getIndexedDBFactory();
return [2, new Promise(function (resolve, reject) {
var deleteRequest = idbFactory.deleteDatabase(DATABASE_NAME);
deleteRequest.onsuccess = function () { return resolve(); };
deleteRequest.onerror = function (error) { return reject(error); };
})];
});
});
}
exports.deleteDatabase = deleteDatabase;
function getIndexedDBFactory() {
if (!environment_1.ENV.get('IS_BROWSER')) {
throw new Error('Failed to obtain IndexedDB factory because the current environment' +
'is not a web browser.');
}
var theWindow = window;
var factory = theWindow.indexedDB || theWindow.mozIndexedDB ||
theWindow.webkitIndexedDB || theWindow.msIndexedDB ||
theWindow.shimIndexedDB;
if (factory == null) {
throw new Error('The current browser does not appear to support IndexedDB.');
}
return factory;
}
function setUpDatabase(openRequest) {
var db = openRequest.result;
db.createObjectStore(MODEL_STORE_NAME, { keyPath: 'modelPath' });
db.createObjectStore(INFO_STORE_NAME, { keyPath: 'modelPath' });
}
var BrowserIndexedDB = (function () {
function BrowserIndexedDB(modelPath) {
this.indexedDB = getIndexedDBFactory();
if (modelPath == null || !modelPath) {
throw new Error('For IndexedDB, modelPath must not be null, undefined or empty.');
}
this.modelPath = modelPath;
}
BrowserIndexedDB.prototype.save = function (modelArtifacts) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (modelArtifacts.modelTopology instanceof ArrayBuffer) {
throw new Error('BrowserLocalStorage.save() does not support saving model topology ' +
'in binary formats yet.');
}
return [2, this.databaseAction(this.modelPath, modelArtifacts)];
});
});
};
BrowserIndexedDB.prototype.load = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2, this.databaseAction(this.modelPath)];
});
});
};
BrowserIndexedDB.prototype.databaseAction = function (modelPath, modelArtifacts) {
var _this = this;
return new Promise(function (resolve, reject) {
var openRequest = _this.indexedDB.open(DATABASE_NAME, DATABASE_VERSION);
openRequest.onupgradeneeded = function () { return setUpDatabase(openRequest); };
openRequest.onsuccess = function () {
var db = openRequest.result;
if (modelArtifacts == null) {
var modelTx = db.transaction(MODEL_STORE_NAME, 'readonly');
var modelStore = modelTx.objectStore(MODEL_STORE_NAME);
var getRequest_1 = modelStore.get(_this.modelPath);
getRequest_1.onsuccess = function () {
if (getRequest_1.result == null) {
db.close();
return reject(new Error("Cannot find model with path '" + _this.modelPath + "' " +
"in IndexedDB."));
}
else {
resolve(getRequest_1.result.modelArtifacts);
}
};
getRequest_1.onerror = function (error) {
db.close();
return reject(getRequest_1.error);
};
modelTx.oncomplete = function () { return db.close(); };
}
else {
var modelArtifactsInfo_1 = io_utils_1.getModelArtifactsInfoForJSON(modelArtifacts);
var infoTx_1 = db.transaction(INFO_STORE_NAME, 'readwrite');
var infoStore_1 = infoTx_1.objectStore(INFO_STORE_NAME);
var putInfoRequest_1 = infoStore_1.put({ modelPath: _this.modelPath, modelArtifactsInfo: modelArtifactsInfo_1 });
var modelTx_1;
putInfoRequest_1.onsuccess = function () {
modelTx_1 = db.transaction(MODEL_STORE_NAME, 'readwrite');
var modelStore = modelTx_1.objectStore(MODEL_STORE_NAME);
var putModelRequest = modelStore.put({
modelPath: _this.modelPath,
modelArtifacts: modelArtifacts,
modelArtifactsInfo: modelArtifactsInfo_1
});
putModelRequest.onsuccess = function () { return resolve({ modelArtifactsInfo: modelArtifactsInfo_1 }); };
putModelRequest.onerror = function (error) {
infoStore_1 = infoTx_1.objectStore(INFO_STORE_NAME);
var deleteInfoRequest = infoStore_1.delete(_this.modelPath);
deleteInfoRequest.onsuccess = function () {
db.close();
return reject(putModelRequest.error);
};
deleteInfoRequest.onerror = function (error) {
db.close();
return reject(putModelRequest.error);
};
};
};
putInfoRequest_1.onerror = function (error) {
db.close();
return reject(putInfoRequest_1.error);
};
infoTx_1.oncomplete = function () {
if (modelTx_1 == null) {
db.close();
}
else {
modelTx_1.oncomplete = function () { return db.close(); };
}
};
}
};
openRequest.onerror = function (error) { return reject(openRequest.error); };
});
};
BrowserIndexedDB.URL_SCHEME = 'indexeddb://';
return BrowserIndexedDB;
}());
exports.BrowserIndexedDB = BrowserIndexedDB;
exports.indexedDBRouter = function (url) {
if (!environment_1.ENV.get('IS_BROWSER')) {
return null;
}
else {
if (!Array.isArray(url) && url.startsWith(BrowserIndexedDB.URL_SCHEME)) {
return browserIndexedDB(url.slice(BrowserIndexedDB.URL_SCHEME.length));
}
else {
return null;
}
}
};
router_registry_1.IORouterRegistry.registerSaveRouter(exports.indexedDBRouter);
router_registry_1.IORouterRegistry.registerLoadRouter(exports.indexedDBRouter);
function browserIndexedDB(modelPath) {
return new BrowserIndexedDB(modelPath);
}
exports.browserIndexedDB = browserIndexedDB;
function maybeStripScheme(key) {
return key.startsWith(BrowserIndexedDB.URL_SCHEME) ?
key.slice(BrowserIndexedDB.URL_SCHEME.length) :
key;
}
var BrowserIndexedDBManager = (function () {
function BrowserIndexedDBManager() {
this.indexedDB = getIndexedDBFactory();
}
BrowserIndexedDBManager.prototype.listModels = function () {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
return __generator(this, function (_a) {
return [2, new Promise(function (resolve, reject) {
var openRequest = _this.indexedDB.open(DATABASE_NAME, DATABASE_VERSION);
openRequest.onupgradeneeded = function () { return setUpDatabase(openRequest); };
openRequest.onsuccess = function () {
var db = openRequest.result;
var tx = db.transaction(INFO_STORE_NAME, 'readonly');
var store = tx.objectStore(INFO_STORE_NAME);
var getAllInfoRequest = store.getAll();
getAllInfoRequest.onsuccess = function () {
var out = {};
for (var _i = 0, _a = getAllInfoRequest.result; _i < _a.length; _i++) {
var item = _a[_i];
out[item.modelPath] = item.modelArtifactsInfo;
}
resolve(out);
};
getAllInfoRequest.onerror = function (error) {
db.close();
return reject(getAllInfoRequest.error);
};
tx.oncomplete = function () { return db.close(); };
};
openRequest.onerror = function (error) { return reject(openRequest.error); };
})];
});
});
};
BrowserIndexedDBManager.prototype.removeModel = function (path) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
return __generator(this, function (_a) {
path = maybeStripScheme(path);
return [2, new Promise(function (resolve, reject) {
var openRequest = _this.indexedDB.open(DATABASE_NAME, DATABASE_VERSION);
openRequest.onupgradeneeded = function () { return setUpDatabase(openRequest); };
openRequest.onsuccess = function () {
var db = openRequest.result;
var infoTx = db.transaction(INFO_STORE_NAME, 'readwrite');
var infoStore = infoTx.objectStore(INFO_STORE_NAME);
var getInfoRequest = infoStore.get(path);
var modelTx;
getInfoRequest.onsuccess = function () {
if (getInfoRequest.result == null) {
db.close();
return reject(new Error("Cannot find model with path '" + path + "' " +
"in IndexedDB."));
}
else {
var deleteInfoRequest = infoStore.delete(path);
var deleteModelData_1 = function () {
modelTx = db.transaction(MODEL_STORE_NAME, 'readwrite');
var modelStore = modelTx.objectStore(MODEL_STORE_NAME);
var deleteModelRequest = modelStore.delete(path);
deleteModelRequest.onsuccess = function () {
return resolve(getInfoRequest.result.modelArtifactsInfo);
};
deleteModelRequest.onerror = function (error) {
return reject(getInfoRequest.error);
};
};
deleteInfoRequest.onsuccess = deleteModelData_1;
deleteInfoRequest.onerror = function (error) {
deleteModelData_1();
db.close();
return reject(getInfoRequest.error);
};
}
};
getInfoRequest.onerror = function (error) {
db.close();
return reject(getInfoRequest.error);
};
infoTx.oncomplete = function () {
if (modelTx == null) {
db.close();
}
else {
modelTx.oncomplete = function () { return db.close(); };
}
};
};
openRequest.onerror = function (error) { return reject(openRequest.error); };
})];
});
});
};
return BrowserIndexedDBManager;
}());
exports.BrowserIndexedDBManager = BrowserIndexedDBManager;
if (environment_1.ENV.get('IS_BROWSER')) {
try {
model_management_1.ModelStoreManagerRegistry.registerManager(BrowserIndexedDB.URL_SCHEME, new BrowserIndexedDBManager());
}
catch (err) {
}
}
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