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### Description Following the design document: * Added CreateTrainingSessionHandler to the Backend interface * All existing Backend implementations throw an error for the new method createTrainingSessionHandler * Created TrainingSession namespace, interface, and TrainingSessionFactory interface * Created TrainingSessionImpl class implementation As methods are implemented, the TrainingSession interface will be added to or modified. ### Motivation and Context Adding the public-facing interfaces to the onnxruntime-common package is one of the first steps to support ORT training for web bindings. --------- Co-authored-by: Caroline Zhu <carolinezhu@microsoft.com>
33 lines
1.3 KiB
TypeScript
33 lines
1.3 KiB
TypeScript
// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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/* eslint-disable import/no-internal-modules */
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import {Backend, InferenceSession, InferenceSessionHandler} from 'onnxruntime-common';
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import {Session} from './onnxjs/session';
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import {OnnxjsSessionHandler} from './onnxjs/session-handler';
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class OnnxjsBackend implements Backend {
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// eslint-disable-next-line @typescript-eslint/no-empty-function
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async init(): Promise<void> {}
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async createInferenceSessionHandler(pathOrBuffer: string|Uint8Array, options?: InferenceSession.SessionOptions):
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Promise<InferenceSessionHandler> {
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// NOTE: Session.Config(from onnx.js) is not compatible with InferenceSession.SessionOptions(from
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// onnxruntime-common).
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// In future we should remove Session.Config and use InferenceSession.SessionOptions.
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// Currently we allow this to happen to make test runner work.
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const session = new Session(options as unknown as Session.Config);
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// typescript cannot merge method override correctly (so far in 4.2.3). need if-else to call the method.
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if (typeof pathOrBuffer === 'string') {
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await session.loadModel(pathOrBuffer);
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} else {
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await session.loadModel(pathOrBuffer);
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}
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return new OnnxjsSessionHandler(session);
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}
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}
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export const onnxjsBackend = new OnnxjsBackend();
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