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manager.ts
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manager.ts
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// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
import {
JSONObject
} from '@phosphor/coreutils';
import {
IDisposable
} from '@phosphor/disposable';
import {
ISignal, Signal
} from '@phosphor/signaling';
import {
Contents, ContentsManager
} from './contents';
import {
Kernel
} from './kernel';
import {
Session, SessionManager
} from './session';
import {
TerminalSession, TerminalManager
} from './terminal';
import {
IAjaxSettings, getBaseUrl, getWsUrl, ajaxSettingsWithToken
} from './utils';
/**
* A Jupyter services manager.
*/
export
class ServiceManager implements ServiceManager.IManager {
/**
* Construct a new services provider.
*/
constructor(options?: ServiceManager.IOptions) {
options = options || {};
options.wsUrl = options.wsUrl || getWsUrl();
options.baseUrl = options.baseUrl || getBaseUrl();
options.ajaxSettings = ajaxSettingsWithToken(options.ajaxSettings, options.token);
this._sessionManager = new SessionManager(options);
this._contentsManager = new ContentsManager(options);
this._terminalManager = new TerminalManager(options);
this._sessionManager.specsChanged.connect((sender, specs) => {
this._specsChanged.emit(specs);
});
this._readyPromise = this._sessionManager.ready.then(() => {
if (this._terminalManager.isAvailable()) {
return this._terminalManager.ready;
}
});
}
/**
* A signal emitted when the kernel specs change.
*/
get specsChanged(): ISignal<this, Kernel.ISpecModels> {
return this._specsChanged;
}
/**
* Test whether the terminal manager is disposed.
*/
get isDisposed(): boolean {
return this._isDisposed;
}
/**
* Dispose of the resources used by the manager.
*/
dispose(): void {
if (this.isDisposed) {
return;
}
this._isDisposed = true;
Signal.clearData(this);
this._sessionManager.dispose();
this._contentsManager.dispose();
this._sessionManager.dispose();
}
/**
* The kernel spec models.
*/
get specs(): Kernel.ISpecModels | null {
return this._sessionManager.specs;
}
/**
* Get the base url of the server.
*/
get baseUrl(): string {
return this._sessionManager.baseUrl;
}
/**
* Get the session manager instance.
*/
get sessions(): SessionManager {
return this._sessionManager;
}
/**
* Get the contents manager instance.
*/
get contents(): ContentsManager {
return this._contentsManager;
}
/**
* Get the terminal manager instance.
*/
get terminals(): TerminalManager {
return this._terminalManager;
}
/**
* Test whether the manager is ready.
*/
get isReady(): boolean {
return this._sessionManager.isReady || this._terminalManager.isReady;
}
/**
* A promise that fulfills when the manager is ready.
*/
get ready(): Promise<void> {
return this._readyPromise;
}
private _sessionManager: SessionManager = null;
private _contentsManager: ContentsManager = null;
private _terminalManager: TerminalManager = null;
private _isDisposed = false;
private _readyPromise: Promise<void>;
private _specsChanged = new Signal<this, Kernel.ISpecModels>(this);
}
/**
* The namespace for `ServiceManager` statics.
*/
export
namespace ServiceManager {
/**
* A service manager interface.
*/
export
interface IManager extends IDisposable {
/**
* A signal emitted when the kernel specs change.
*/
specsChanged: ISignal<IManager, Kernel.ISpecModels>;
/**
* The kernel spec models.
*/
readonly specs: Kernel.ISpecModels | null;
/**
* The base url of the manager.
*/
readonly baseUrl: string;
/**
* The session manager for the manager.
*/
readonly sessions: Session.IManager;
/**
* The contents manager for the manager.
*/
readonly contents: Contents.IManager;
/**
* The terminals manager for the manager.
*/
readonly terminals: TerminalSession.IManager;
/**
* Test whether the manager is ready.
*/
readonly isReady: boolean;
/**
* A promise that fulfills when the manager is initially ready.
*/
readonly ready: Promise<void>;
}
/**
* The options used to create a service manager.
*/
export
interface IOptions extends JSONObject {
/**
* The base url of the server.
*/
baseUrl?: string;
/**
* The base ws url of the server.
*/
wsUrl?: string;
/**
* The authentication token for the API.
*/
token?: string;
/**
* The ajax settings for the manager.
*/
ajaxSettings?: IAjaxSettings;
}
}