Get terminals working
- Instead of a single listener per terminal that handles all events VS Code now has a single listener per event that handles that event for all terminals. - Refactor Terminal to extend TerminalProcess to avoid duplicating methods. This required some modifications to TerminalProcess to access the pid and title and to set the ID. - Remove our async change to shutdown. This was necessary to avoid disposing too early but shutdown already calls dispose so it turns out we didn't need to call it ourselves. - Rename methods to match the command strings. - Fix getting system shell (uses process.env). - Use a single bufferer. Since it already supports buffering for multiple terminals there's no need to have one per terminal. - Remove replay/reconnect logic. It's broken and unused so there doesn't seem much point in trying to refactor it to fit the changes right now. While terminals work now there are still a lot of todos.
This commit is contained in:
Asher
parent
b1fb9f780b
commit
5ebb096db5
@ -45,14 +45,13 @@ const enum ShutdownConstants {
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}
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export class TerminalProcess extends Disposable implements ITerminalChildProcess {
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readonly id = 0;
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readonly shouldPersist = false;
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private _exitCode: number | undefined;
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private _exitMessage: string | undefined;
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private _closeTimeout: any;
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private _ptyProcess: pty.IPty | undefined;
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private _currentTitle: string = '';
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protected _ptyProcess: pty.IPty | undefined;
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protected _currentTitle: string = '';
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private _processStartupComplete: Promise<void> | undefined;
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private _isDisposed: boolean = false;
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private _windowsShellHelper: WindowsShellHelper | undefined;
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@ -82,6 +81,7 @@ export class TerminalProcess extends Disposable implements ITerminalChildProcess
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public readonly onProcessShellTypeChanged = this._onProcessShellTypeChanged.event;
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constructor(
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public readonly id: number = 0,
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private readonly _shellLaunchConfig: IShellLaunchConfig,
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cwd: string,
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cols: number,
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@ -293,9 +293,9 @@ export class TerminalProcess extends Disposable implements ITerminalChildProcess
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this._onProcessTitleChanged.fire(this._currentTitle);
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}
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public async shutdown(immediate: boolean): Promise<void> {
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public shutdown(immediate: boolean): void {
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if (immediate) {
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await this._kill();
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this._kill();
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} else {
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if (!this._closeTimeout && !this._isDisposed) {
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this._queueProcessExit();
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@ -21,6 +21,10 @@ import { ILogService } from 'vs/platform/log/common/log';
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import product from 'vs/platform/product/common/product';
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import { IRemoteAgentEnvironment, RemoteAgentConnectionContext } from 'vs/platform/remote/common/remoteAgentEnvironment';
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import { ITelemetryData, ITelemetryService } from 'vs/platform/telemetry/common/telemetry';
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import { IProcessDataEvent, IShellLaunchConfig, ITerminalEnvironment, ITerminalLaunchError, ITerminalsLayoutInfo } from 'vs/platform/terminal/common/terminal';
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import { TerminalDataBufferer } from 'vs/platform/terminal/common/terminalDataBuffering';
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import { IGetTerminalLayoutInfoArgs, IProcessDetails, IPtyHostProcessReplayEvent, ISetTerminalLayoutInfoArgs } from 'vs/platform/terminal/common/terminalProcess';
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import { TerminalProcess } from 'vs/platform/terminal/node/terminalProcess';
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import { getTranslations } from 'vs/server/node/nls';
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import { getUriTransformer } from 'vs/server/node/util';
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import { IFileChangeDto } from 'vs/workbench/api/common/extHost.protocol';
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@ -28,12 +32,8 @@ import { IEnvironmentVariableCollection } from 'vs/workbench/contrib/terminal/co
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import { MergedEnvironmentVariableCollection } from 'vs/workbench/contrib/terminal/common/environmentVariableCollection';
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import { deserializeEnvironmentVariableCollection } from 'vs/workbench/contrib/terminal/common/environmentVariableShared';
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import * as terminal from 'vs/workbench/contrib/terminal/common/remoteTerminalChannel';
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import { IShellLaunchConfig, ITerminalEnvironment, ITerminalLaunchError, ITerminalsLayoutInfo } from 'vs/platform/terminal/common/terminal';
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import { TerminalDataBufferer } from 'vs/platform/terminal/common/terminalDataBuffering';
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import * as terminalEnvironment from 'vs/workbench/contrib/terminal/common/terminalEnvironment';
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import { getMainProcessParentEnv } from 'vs/workbench/contrib/terminal/node/terminalEnvironment';
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import { TerminalProcess } from 'vs/platform/terminal/node/terminalProcess';
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import { ISetTerminalLayoutInfoArgs, IGetTerminalLayoutInfoArgs, IProcessDetails } from 'vs/platform/terminal/common/terminalProcess';
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import { AbstractVariableResolverService } from 'vs/workbench/services/configurationResolver/common/variableResolver';
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import { ExtensionScanner, ExtensionScannerInput } from 'vs/workbench/services/extensions/node/extensionPoints';
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@ -386,239 +386,47 @@ class VariableResolverService extends AbstractVariableResolverService {
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}
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}
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class Terminal {
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private readonly process: TerminalProcess;
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private _pid: number = -1;
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private _title: string = '';
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public readonly workspaceId: string;
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public readonly workspaceName: string;
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private readonly persist: boolean;
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class Terminal extends TerminalProcess {
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private readonly workspaceId: string;
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private readonly workspaceName: string;
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private readonly _onDispose = new Emitter<void>();
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public get onDispose(): Event<void> { return this._onDispose.event; }
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// TODO: Implement once we have persistent terminals.
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public isOrphan: boolean = false;
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private _isOrphan = true;
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public get isOrphan(): boolean { return this._isOrphan; }
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// These are replayed when a client reconnects.
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private cols: number;
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private rows: number;
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private replayData: string[] = [];
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// This is based on string length and is pretty arbitrary.
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private readonly maxReplayData = 10000;
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private totalReplayData = 0;
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// According to the release notes the terminals are supposed to dispose after
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// a short timeout; in our case we'll use 48 hours so you can get them back
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// the next day or over the weekend.
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private disposeTimeout: NodeJS.Timeout | undefined;
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private disposeDelay = 48 * 60 * 60 * 1000;
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private buffering = false;
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private readonly _onEvent = new Emitter<any>({
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// Don't bind to data until something is listening.
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onFirstListenerAdd: () => {
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logger.debug('Terminal bound', field('id', this.id));
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this._isOrphan = false;
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if (!this.buffering) {
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this.buffering = true;
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this.bufferer.startBuffering(this.id, this.process.onProcessData);
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}
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},
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// Replay stored events.
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onFirstListenerDidAdd: () => {
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// We only need to replay if the terminal is being reconnected which is
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// true if there is a dispose timeout.
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if (typeof this.disposeTimeout !== 'undefined') {
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return;
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}
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clearTimeout(this.disposeTimeout);
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this.disposeTimeout = undefined;
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logger.debug('Terminal replaying', field('id', this.id));
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this._onEvent.fire({
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type: 'replay',
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events: [{
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cols: this.cols,
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rows: this.rows,
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data: this.replayData.join(''),
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}]
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});
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},
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onLastListenerRemove: () => {
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logger.debug('Terminal unbound', field('id', this.id));
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this._isOrphan = true;
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if (!this.persist) { // Used by debug consoles.
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this.dispose();
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} else {
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this.disposeTimeout = setTimeout(() => {
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this.dispose();
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}, this.disposeDelay);
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}
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}
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});
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public get onEvent(): Event<any> { return this._onEvent.event; }
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// Buffer to reduce the number of messages going to the renderer.
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private readonly bufferer = new TerminalDataBufferer((_, data) => {
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this._onEvent.fire({
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type: 'data',
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data,
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});
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// No need to store data if we aren't persisting.
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if (!this.persist) {
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return;
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}
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this.replayData.push(data);
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this.totalReplayData += data.length;
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let overflow = this.totalReplayData - this.maxReplayData;
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if (overflow <= 0) {
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return;
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}
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// Drop events until doing so would put us under budget.
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let deleteCount = 0;
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for (; deleteCount < this.replayData.length
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&& this.replayData[deleteCount].length <= overflow; ++deleteCount) {
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overflow -= this.replayData[deleteCount].length;
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}
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if (deleteCount > 0) {
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this.replayData.splice(0, deleteCount);
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}
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// Dropping any more events would put us under budget; trim the first event
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// instead if still over budget.
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if (overflow > 0 && this.replayData.length > 0) {
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this.replayData[0] = this.replayData[0].substring(overflow);
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}
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this.totalReplayData = this.replayData.reduce((p, c) => p + c.length, 0);
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});
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public get pid(): number {
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return this._pid;
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}
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public get title(): string {
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return this._title;
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}
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public get title(): string { return this._currentTitle; }
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public get pid(): number { return this._ptyProcess?.pid ?? -1; }
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public constructor(
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public readonly id: number,
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id: number,
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config: IShellLaunchConfig & { cwd: string },
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args: terminal.ICreateTerminalProcessArguments,
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env: platform.IProcessEnvironment,
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logService: ILogService,
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) {
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this.workspaceId = args.workspaceId;
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this.workspaceName = args.workspaceName;
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this.cols = args.cols;
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this.rows = args.rows;
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// TODO: Don't persist terminals until we make it work with things like
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// htop, vim, etc.
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// this.persist = args.shouldPersistTerminal;
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this.persist = false;
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this.process = new TerminalProcess(
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super(
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id,
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config,
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config.cwd,
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this.cols,
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this.rows,
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args.cols,
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args.rows,
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env,
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process.env as platform.IProcessEnvironment, // Environment used for `findExecutable`.
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false, // windowsEnableConpty: boolean,
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logService,
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);
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// The current pid and title aren't exposed so they have to be tracked.
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this.process.onProcessReady((event) => {
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this._pid = event.pid;
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this._onEvent.fire({
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type: 'ready',
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pid: event.pid,
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cwd: event.cwd,
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});
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});
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this.workspaceId = args.workspaceId;
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this.workspaceName = args.workspaceName;
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this.process.onProcessTitleChanged((title) => {
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this._title = title;
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this._onEvent.fire({
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type: 'titleChanged',
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title,
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});
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});
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this.process.onProcessExit((exitCode) => {
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logger.debug('Terminal exited', field('id', this.id), field('code', exitCode));
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this._onEvent.fire({
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type: 'exit',
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exitCode,
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});
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this.dispose();
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});
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// TODO: I think `execCommand` must have something to do with running
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// commands on the terminal that will do things in VS Code but we already
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// have that functionality via a socket so I'm not sure what this is for.
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// type: 'execCommand';
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// reqId: number;
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// commandId: string;
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// commandArgs: any[];
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// TODO: Maybe this is to ask if the terminal is currently attached to
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// anything? But we already know that on account of whether anything is
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// listening to our event emitter.
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// type: 'orphan?';
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// Ensure other listeners run before disposing the emitters.
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this.onProcessExit(() => setTimeout(() => this.shutdown(true), 1));
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}
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public async dispose() {
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logger.debug('Terminal disposing', field('id', this.id));
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this._onEvent.dispose();
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this.bufferer.dispose();
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await this.process.shutdown(true);
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this.process.dispose();
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this._onDispose.fire();
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this._onDispose.dispose();
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}
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public shutdown(immediate: boolean): Promise<void> {
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return this.process.shutdown(immediate);
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}
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public getCwd(): Promise<string> {
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return this.process.getCwd();
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}
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public getInitialCwd(): Promise<string> {
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return this.process.getInitialCwd();
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}
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public start(): Promise<ITerminalLaunchError | undefined> {
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return this.process.start();
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}
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public input(data: string): void {
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return this.process.input(data);
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}
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public acknowledgeDataEvent(charCount: number): void {
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return this.process.acknowledgeDataEvent(charCount);
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}
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public resize(cols: number, rows: number): void {
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this.cols = cols;
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this.rows = rows;
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return this.process.resize(cols, rows);
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/**
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* Run `fn` when the terminal disposes.
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*/
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public onDispose(dispose: () => void) {
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this._register({ dispose });
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}
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/**
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@ -646,35 +454,74 @@ export class TerminalProviderChannel implements IServerChannel<RemoteAgentConnec
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private readonly layouts = new Map<string, ISetTerminalLayoutInfoArgs>();
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public constructor (private readonly logService: ILogService) {
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// These re-emit events from terminals with their IDs attached.
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private readonly _onProcessData = new Emitter<{ id: number, event: IProcessDataEvent | string }>({
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// Shut down all terminals when all clients disconnect. Unfortunately this
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// means that if you open multiple tabs and close one the terminals spawned
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// by that tab won't shut down and they can't be reconnected either since we
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// don't have persistence yet.
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// TODO: Implement persistence.
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onLastListenerRemove: () => {
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this.terminals.forEach((t) => t.shutdown(true));
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}
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});
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private readonly _onProcessExit = new Emitter<{ id: number, event: number | undefined }>();
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private readonly _onProcessReady = new Emitter<{ id: number, event: { pid: number, cwd: string } }>();
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private readonly _onProcessReplay = new Emitter<{ id: number, event: IPtyHostProcessReplayEvent }>();
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private readonly _onProcessTitleChanged = new Emitter<{ id: number, event: string }>();
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}
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// Buffer to reduce the number of messages going to the renderer.
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private readonly bufferer = new TerminalDataBufferer((id, data) => {
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// TODO: Not sure what sync means.
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this._onProcessData.fire({ id, event: { data, sync: true }});
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});
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public constructor (private readonly logService: ILogService) {}
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public listen(_: RemoteAgentConnectionContext, event: string, args: any): Event<any> {
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logger.trace('TerminalProviderChannel:listen', field("event", event), field("args", args));
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public listen(_: RemoteAgentConnectionContext, event: string, args?: any): Event<any> {
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switch (event) {
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case '$onTerminalProcessEvent': return this.onTerminalProcessEvent(args);
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case '$onPtyHostExitEvent': return Event.None; // TODO
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case '$onPtyHostStartEvent': return Event.None; // TODO
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case '$onPtyHostUnresponsiveEvent': return Event.None; // TODO
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case '$onPtyHostResponsiveEvent': return Event.None; // TODO
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case '$onProcessDataEvent': return this._onProcessData.event;
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case '$onProcessExitEvent': return this._onProcessExit.event;
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case '$onProcessReadyEvent': return this._onProcessReady.event;
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case '$onProcessReplayEvent': return this._onProcessReplay.event;
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case '$onProcessTitleChangedEvent': return this._onProcessTitleChanged.event;
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case '$onProcessShellTypeChangedEvent': return Event.None; // TODO;
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case '$onProcessOverrideDimensionsEvent': return Event.None; // TODO;
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case '$onProcessResolvedShellLaunchConfigEvent': return Event.None; // TODO;
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case '$onProcessOrphanQuestion': return Event.None; // TODO
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// TODO: I think this must have something to do with running commands on
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// the terminal that will do things in VS Code but we already have that
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// functionality via a socket so I'm not sure what this is for.
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case '$onExecuteCommand': return Event.None;
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}
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throw new Error(`Invalid listen '${event}'`);
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}
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private onTerminalProcessEvent(id: number): Event<any> {
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return this.getTerminal(id).onEvent;
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}
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public call(context: RemoteAgentConnectionContext, command: string, args: any): Promise<any> {
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logger.trace('TerminalProviderChannel:call', field("command", command), field("args", args));
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public call(context: RemoteAgentConnectionContext, command: string, args?: any): Promise<any> {
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switch (command) {
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case '$createProcess': return this.createTerminalProcess(context.remoteAuthority, args);
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case '$start': return this.startTerminalProcess(...args as [number]);
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case '$input': return this.sendInputToTerminalProcess(...args as [number, string]);
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case '$acknowledgeDataEvent': return this.sendCharCountToTerminalProcess(...args as [number, number]);
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case '$shutdown': return this.shutdownTerminalProcess(...args as [number, boolean]);
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case '$resize': return this.resizeTerminalProcess(...args as [number, number, number]);
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case '$getInitialCwd': return this.getTerminalInitialCwd(...args as [number]);
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case '$getCwd': return this.getTerminalCwd(...args as [number]);
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case '$sendCommandResult': return this.sendCommandResultToTerminalProcess(...args as [number, number, boolean, any]);
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case '$orphanQuestionReply': return this.orphanQuestionReply(...args as [number]);
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case '$listProcesses': return this.listProcesses();
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case '$restartPtyHost': return this.restartPtyHost();
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case '$createProcess': return this.createProcess(context.remoteAuthority, args);
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case '$attachProcess': return this.attachProcess(args[0]);
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case '$start': return this.start(args[0]);
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case '$input': return this.input(args[0], args[1]);
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case '$acknowledgeDataEvent': return this.acknowledgeDataEvent(args[0], args[1]);
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case '$shutdown': return this.shutdown(args[0], args[1]);
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case '$resize': return this.resize(args[0], args[1], args[2]);
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case '$getInitialCwd': return this.getInitialCwd(args[0]);
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case '$getCwd': return this.getCwd(args[0]);
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case '$sendCommandResult': return this.sendCommandResult(args[0], args[1], args[2], args[3]);
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case '$orphanQuestionReply': return this.orphanQuestionReply(args[0]);
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case '$listProcesses': return this.listProcesses(args[0]);
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case '$setTerminalLayoutInfo': return this.setTerminalLayoutInfo(args);
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case '$getTerminalLayoutInfo': return this.getTerminalLayoutInfo(args);
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}
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@ -683,10 +530,15 @@ export class TerminalProviderChannel implements IServerChannel<RemoteAgentConnec
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}
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public dispose(): void {
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this.terminals.forEach((t) => t.dispose());
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this.bufferer.dispose();
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this.terminals.forEach((t) => t.shutdown(false));
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}
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private async createTerminalProcess(remoteAuthority: string, args: terminal.ICreateTerminalProcessArguments): Promise<terminal.ICreateTerminalProcessResult> {
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private async restartPtyHost(): Promise<void> {
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throw new Error('TODO: restartPtyHost');
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}
|
||||
|
||||
private async createProcess(remoteAuthority: string, args: terminal.ICreateTerminalProcessArguments): Promise<terminal.ICreateTerminalProcessResult> {
|
||||
const terminalId = this.id++;
|
||||
logger.debug('Creating terminal', field('id', terminalId), field('terminals', this.terminals.size));
|
||||
|
||||
@ -729,7 +581,7 @@ export class TerminalProviderChannel implements IServerChannel<RemoteAgentConnec
|
||||
const executable = terminalEnvironment.getDefaultShell(
|
||||
(key) => args.configuration[key],
|
||||
args.isWorkspaceShellAllowed,
|
||||
await getSystemShell(platform.platform, env),
|
||||
await getSystemShell(platform.platform, process.env as platform.IProcessEnvironment),
|
||||
process.env.hasOwnProperty('PROCESSOR_ARCHITEW6432'),
|
||||
process.env.windir,
|
||||
resolver,
|
||||
@ -811,12 +663,28 @@ export class TerminalProviderChannel implements IServerChannel<RemoteAgentConnec
|
||||
logger.debug('Resolved terminal environment', field('id', terminalId));
|
||||
|
||||
const terminal = new Terminal(terminalId, resolvedShellLaunchConfig, args, env, this.logService);
|
||||
this.terminals.set(terminalId, terminal);
|
||||
logger.debug('Created terminal', field('id', terminalId));
|
||||
terminal.onDispose(() => this.terminals.delete(terminalId));
|
||||
this.terminals.set(terminal.id, terminal);
|
||||
logger.debug('Created terminal', field('id', terminal.id));
|
||||
terminal.onDispose(() => {
|
||||
this.terminals.delete(terminal.id);
|
||||
this.bufferer.stopBuffering(terminal.id);
|
||||
});
|
||||
|
||||
// Hook up terminal events to the global event emitter.
|
||||
this.bufferer.startBuffering(terminal.id, terminal.onProcessData);
|
||||
terminal.onProcessExit((exitCode) => {
|
||||
logger.debug('Terminal exited', field('id', terminal.id), field('code', exitCode));
|
||||
this._onProcessExit.fire({ id: terminal.id, event: exitCode });
|
||||
});
|
||||
terminal.onProcessReady((event) => {
|
||||
this._onProcessReady.fire({ id: terminal.id, event });
|
||||
});
|
||||
terminal.onProcessTitleChanged((title) => {
|
||||
this._onProcessTitleChanged.fire({ id: terminal.id, event: title });
|
||||
});
|
||||
|
||||
return {
|
||||
persistentTerminalId: terminalId,
|
||||
persistentTerminalId: terminal.id,
|
||||
resolvedShellLaunchConfig,
|
||||
};
|
||||
}
|
||||
@ -829,49 +697,51 @@ export class TerminalProviderChannel implements IServerChannel<RemoteAgentConnec
|
||||
return terminal;
|
||||
}
|
||||
|
||||
private async startTerminalProcess(id: number): Promise<ITerminalLaunchError | void> {
|
||||
private async attachProcess(_id: number): Promise<void> {
|
||||
// TODO: Won't be necessary until we have persistent terminals.
|
||||
throw new Error('not implemented');
|
||||
}
|
||||
|
||||
private async start(id: number): Promise<ITerminalLaunchError | void> {
|
||||
return this.getTerminal(id).start();
|
||||
}
|
||||
|
||||
private async sendInputToTerminalProcess(id: number, data: string): Promise<void> {
|
||||
private async input(id: number, data: string): Promise<void> {
|
||||
return this.getTerminal(id).input(data);
|
||||
}
|
||||
|
||||
private async sendCharCountToTerminalProcess(id: number, charCount: number): Promise<void> {
|
||||
private async acknowledgeDataEvent(id: number, charCount: number): Promise<void> {
|
||||
return this.getTerminal(id).acknowledgeDataEvent(charCount);
|
||||
}
|
||||
|
||||
private async shutdownTerminalProcess(id: number, immediate: boolean): Promise<void> {
|
||||
private async shutdown(id: number, immediate: boolean): Promise<void> {
|
||||
return this.getTerminal(id).shutdown(immediate);
|
||||
}
|
||||
|
||||
private async resizeTerminalProcess(id: number, cols: number, rows: number): Promise<void> {
|
||||
private async resize(id: number, cols: number, rows: number): Promise<void> {
|
||||
return this.getTerminal(id).resize(cols, rows);
|
||||
}
|
||||
|
||||
private async getTerminalInitialCwd(id: number): Promise<string> {
|
||||
private async getInitialCwd(id: number): Promise<string> {
|
||||
return this.getTerminal(id).getInitialCwd();
|
||||
}
|
||||
|
||||
private async getTerminalCwd(id: number): Promise<string> {
|
||||
private async getCwd(id: number): Promise<string> {
|
||||
return this.getTerminal(id).getCwd();
|
||||
}
|
||||
|
||||
private async sendCommandResultToTerminalProcess(id: number, reqId: number, isError: boolean, payload: any): Promise<void> {
|
||||
// NOTE: Not required unless we implement the `execCommand` event, see above.
|
||||
private async sendCommandResult(_id: number, _reqId: number, _isError: boolean, _payload: any): Promise<void> {
|
||||
// NOTE: Not required unless we implement the matching event, see above.
|
||||
throw new Error('not implemented');
|
||||
}
|
||||
|
||||
private async orphanQuestionReply(id: number): Promise<void> {
|
||||
// NOTE: Not required unless we implement the `orphan?` event, see above.
|
||||
private async orphanQuestionReply(_id: number): Promise<void> {
|
||||
// NOTE: Not required unless we implement the matching event, see above.
|
||||
throw new Error('not implemented');
|
||||
}
|
||||
|
||||
private async listProcesses(): Promise<IProcessDetails[]> {
|
||||
// TODO: args.isInitialization. Maybe this is to have slightly different
|
||||
// behavior when first listing terminals but I don't know what you'd want to
|
||||
// do differently. Maybe it's to reset the terminal dispose timeouts or
|
||||
// something like that, but why not do it each time you list?
|
||||
private async listProcesses(_reduceGraceTime: boolean): Promise<IProcessDetails[]> {
|
||||
// TODO: reduceGraceTime.
|
||||
const terminals = await Promise.all(Array.from(this.terminals).map(async ([id, terminal]) => {
|
||||
return terminal.description(id);
|
||||
}));
|
||||
|
||||
Reference in New Issue
Block a user