/**
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* @license
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* Copyright 2018 Google LLC. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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// Register all kernels.
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import './register_all_kernels';
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import * as tf from '@tensorflow/tfjs';
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import * as path from 'path';
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import {ProgbarLogger} from './callbacks';
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import {nodeFileSystemRouter} from './io/file_system';
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import * as nodeIo from './io/index';
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import {NodeJSKernelBackend} from './nodejs_kernel_backend';
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import {TFJSBinding} from './tfjs_binding';
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import * as nodeVersion from './version';
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// tslint:disable-next-line:no-require-imports
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const binary = require('@mapbox/node-pre-gyp');
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const bindingPath =
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binary.find(path.resolve(path.join(__dirname, '/../package.json')));
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// Check if the node native addon module exists.
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// tslint:disable-next-line:no-require-imports
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const fs = require('fs');
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if (!fs.existsSync(bindingPath)) {
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throw new Error(
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`The Node.js native addon module (tfjs_binding.node) can not ` +
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`be found at path: ` + String(bindingPath) + `. \nPlease run command ` +
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`'npm rebuild @tensorflow/tfjs-node` +
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(String(bindingPath).indexOf('tfjs-node-gpu') > 0 ? `-gpu` : ``) +
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` --build-addon-from-source' to ` +
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`rebuild the native addon module. \nIf you have problem with building ` +
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`the addon module, please check ` +
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`https://github.com/tensorflow/tfjs/blob/master/tfjs-node/` +
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`WINDOWS_TROUBLESHOOTING.md or file an issue.`);
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}
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// tslint:disable-next-line:no-require-imports
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const bindings = require(bindingPath);
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// Merge version and io namespaces.
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export const version = {
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...tf.version,
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'tfjs-node': nodeVersion.version
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};
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export const io = {
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...tf.io,
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...nodeIo
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};
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// Export all union package symbols
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export * from '@tensorflow/tfjs';
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export * from './node';
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// tslint:disable-next-line:no-require-imports
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const pjson = require('../package.json');
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// Side effects for default initialization of Node backend.
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tf.registerBackend('tensorflow', () => {
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return new NodeJSKernelBackend(bindings as TFJSBinding, pjson.name);
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}, 3 /* priority */);
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const success = tf.setBackend('tensorflow');
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if (!success) {
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throw new Error(`Could not initialize TensorFlow backend.`);
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}
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// Register the model saving and loading handlers for the 'file://' URL scheme.
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tf.io.registerLoadRouter(nodeFileSystemRouter);
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tf.io.registerSaveRouter(nodeFileSystemRouter);
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// Register the ProgbarLogger for Model.fit() at verbosity level 1.
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tf.registerCallbackConstructor(1, ProgbarLogger);
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