Notebooks: Use new Python installation after configuration change (#14765)

* start new jupyter server

* restart session working (removed extra code)

* only restart server once

* shutdown session first then stop server

* add comments remove extra lines

* add comment

* fix test

* only restart jupyter sessions

* Dispose jupytersessionmanager and create new one

* move restart server logic out of notebookmodel

* move methods to azdata proposed

* pr comment

src/sql/workbench/services/notebook/browser/models/modelInterfaces.ts

@@ -361,6 +361,11 @@ export interface INotebookModel {
 	 */
 	getMetaValue(key: string): any;
 
+	/**
+	 * Restart current active session if it exists
+	 */
+	restartSession(): Promise<void>;
+
 	/**
 	 * Change the current kernel from the Kernel dropdown
 	 * @param displayName kernel name (as displayed in Kernel dropdown)
@@ -387,7 +392,6 @@ export interface INotebookModel {
 	 */
 	moveCell(cellModel: ICellModel, direction: MoveDirection): void;
 
-
 	/**
 	 * Deletes a cell
 	 */
@@ -403,7 +407,6 @@ export interface INotebookModel {
 	 */
 	onCellChange(cell: ICellModel, change: NotebookChangeType): void;
 
-
 	/**
 	 * Push edit operations, basically editing the model. This is the preferred way of
 	 * editing the model. Long-term, this will ensure edit operations can be added to the undo stack

src/sql/workbench/services/notebook/browser/models/notebookModel.ts

@@ -741,6 +741,14 @@ export class NotebookModel extends Disposable implements INotebookModel {
 		}
 	}
 
+	public async restartSession(): Promise<void> {
+		if (this._activeClientSession) {
+			// Old active client sessions have already been shutdown by RESTART_JUPYTER_NOTEBOOK_SESSIONS command
+			this._activeClientSession = undefined;
+			await this.startSession(this.notebookManager, this._selectedKernelDisplayName, true);
+		}
+	}
+
 	// When changing kernel, update the active session
 	private updateActiveClientSession(clientSession: IClientSession) {
 		this._activeClientSession = clientSession;
@@ -1114,7 +1122,7 @@ export class NotebookModel extends Disposable implements INotebookModel {
 		}
 	}
 
-	private async shutdownActiveSession() {
+	private async shutdownActiveSession(): Promise<void> {
 		if (this._activeClientSession) {
 			try {
 				await this._activeClientSession.ready;

src/sql/workbench/services/notebook/browser/sql/sqlSessionManager.ts

@@ -133,6 +133,16 @@ export class SqlSessionManager implements nb.SessionManager {
 		}
 		return Promise.resolve();
 	}
+
+	shutdownAll(): Thenable<void> {
+		return Promise.all(SqlSessionManager._sessions.map(session => {
+			return this.shutdown(session.id);
+		})).then();
+	}
+
+	dispose(): void {
+		// no-op
+	}
 }
 
 export class SqlSession implements nb.ISession {