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57 lines
1.7 KiB
TypeScript
57 lines
1.7 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 { Readable } from 'stream';
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import type * as channels from '@protocol/channels';
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import { ChannelOwner } from './channelOwner';
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export class Stream extends ChannelOwner<channels.StreamChannel> {
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static from(Stream: channels.StreamChannel): Stream {
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return (Stream as any)._object;
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}
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constructor(parent: ChannelOwner, type: string, guid: string, initializer: channels.StreamInitializer) {
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super(parent, type, guid, initializer);
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}
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stream(): Readable {
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return new StreamImpl(this._channel);
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}
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}
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class StreamImpl extends Readable {
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private _channel: channels.StreamChannel;
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constructor(channel: channels.StreamChannel) {
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super();
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this._channel = channel;
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}
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override async _read() {
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const result = await this._channel.read({ size: 1024 * 1024 });
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if (result.binary.byteLength)
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this.push(result.binary);
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else
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this.push(null);
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}
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override _destroy(error: Error | null, callback: (error: Error | null | undefined) => void): void {
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// Stream might be destroyed after the connection was closed.
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this._channel.close().catch(e => null);
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super._destroy(error, callback);
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}
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}
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