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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| // Copyright (c) Microsoft Corporation. All rights reserved. | ||
| // Licensed under the MIT License. | ||
|
|
||
| import type { Kernel } from '@jupyterlab/services'; | ||
| import { IDisposable } from '../../platform/common/types'; | ||
| import { BaseKernelConnectionWrapper } from '../jupyter/baseKernelConnectionWrapper'; | ||
|
|
||
| export class KernelConnectionWrapper extends BaseKernelConnectionWrapper { | ||
| /** | ||
| * Use `kernelConnection` to access the value as its not a constant (can change over time). | ||
| * E.g. when restarting kernels or the like. | ||
| */ | ||
| private _kernelConnection!: Kernel.IKernelConnection; | ||
| protected get possibleKernelConnection(): undefined | Kernel.IKernelConnection { | ||
| return this._kernelConnection; | ||
| } | ||
| public get kernel() { | ||
| return this._kernelConnection; | ||
| } | ||
|
|
||
| constructor(kernel: Kernel.IKernelConnection, disposables: IDisposable[]) { | ||
| super(kernel, disposables); | ||
| this._kernelConnection = kernel; | ||
| } | ||
| public changeKernel(kernel: Kernel.IKernelConnection) { | ||
| if (this.kernel === kernel) { | ||
| return; | ||
| } | ||
| this.stopHandlingKernelMessages(this.possibleKernelConnection!); | ||
| this._kernelConnection = kernel; | ||
| this.startHandleKernelMessages(kernel); | ||
| } | ||
| async shutdown(): Promise<void> { | ||
| await this._kernelConnection.shutdown(); | ||
| } | ||
| dispose(): void { | ||
| this._kernelConnection.dispose(); | ||
| } | ||
| async interrupt(): Promise<void> { | ||
| await this._kernelConnection.interrupt(); | ||
| } | ||
| async restart(): Promise<void> { | ||
| await this._kernelConnection.restart(); | ||
| } | ||
| protected override startHandleKernelMessages(kernelConnection: Kernel.IKernelConnection) { | ||
| super.startHandleKernelMessages(kernelConnection); | ||
| this._kernelConnection = kernelConnection; | ||
| kernelConnection.connectionStatusChanged.connect(this.onConnectionStatusChanged, this); | ||
| kernelConnection.statusChanged.connect(this.onStatusChanged, this); | ||
| kernelConnection.disposed.connect(this.onDisposed, this); | ||
| } | ||
| protected override stopHandlingKernelMessages(kernelConnection: Kernel.IKernelConnection): void { | ||
| super.stopHandlingKernelMessages(kernelConnection); | ||
| kernelConnection.connectionStatusChanged.disconnect(this.onConnectionStatusChanged, this); | ||
| kernelConnection.statusChanged.disconnect(this.onStatusChanged, this); | ||
| kernelConnection.disposed.disconnect(this.onDisposed, this); | ||
| } | ||
| private onDisposed(connection: Kernel.IKernelConnection) { | ||
| if (connection === this.possibleKernelConnection) { | ||
| this.disposed.emit(); | ||
| } | ||
| } | ||
| private onStatusChanged(connection: Kernel.IKernelConnection, args: Kernel.Status) { | ||
| if (connection === this.possibleKernelConnection) { | ||
| this.statusChanged.emit(args); | ||
| } | ||
| } | ||
| private onConnectionStatusChanged(connection: Kernel.IKernelConnection, args: Kernel.ConnectionStatus) { | ||
| if (connection === this.possibleKernelConnection) { | ||
| this.connectionStatusChanged.emit(args); | ||
| } | ||
| } | ||
| } |
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