2d5c0328cd
For future extensibility, returning objects with fields instead of plain strings or channels.
31 lines
1.2 KiB
TypeScript
31 lines
1.2 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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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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import { StreamChannel, StreamInitializer, Binary } from '../channels';
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import { Dispatcher, DispatcherScope } from './dispatcher';
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import * as stream from 'stream';
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export class StreamDispatcher extends Dispatcher<stream.Readable, StreamInitializer> implements StreamChannel {
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constructor(scope: DispatcherScope, stream: stream.Readable) {
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super(scope, stream, 'stream', {});
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}
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async read(params: { size?: number }): Promise<{ binary: Binary }> {
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const buffer = this._object.read(Math.min(this._object.readableLength, params.size || this._object.readableLength));
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return { binary: buffer ? buffer.toString('base64') : '' };
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}
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}
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