playwright/src/rpc/server/streamDispatcher.ts
Dmitry Gozman eab5ff4eae
chore(rpc): use channels types in dispatchers (#3549)
This ensures we actually implement channels as intended.
For example, this change found an issue with Route.fulfill.
2020-08-20 11:25:33 -07:00

31 lines
1.2 KiB
TypeScript

/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the 'License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as channels from '../channels';
import { Dispatcher, DispatcherScope } from './dispatcher';
import * as stream from 'stream';
export class StreamDispatcher extends Dispatcher<stream.Readable, channels.StreamInitializer> implements channels.StreamChannel {
constructor(scope: DispatcherScope, stream: stream.Readable) {
super(scope, stream, 'Stream', {});
}
async read(params: channels.StreamReadParams): Promise<channels.StreamReadResult> {
const buffer = this._object.read(Math.min(this._object.readableLength, params.size || this._object.readableLength));
return { binary: buffer ? buffer.toString('base64') : '' };
}
}