Notebooks: Save cell connection name in cell metadata (#13208)

* save connection info in notebook metadata

* update attachTo dropdown based on saved alias

* add setting for saving connection (default=false)

* save/read cell connection name to/from metadata

* get started on toggling multi connection mode

* add activeConnection property to cell model

* add changeContext method for cell

* add comments

* add unit test for reading connection name

* save connection mode in metadata

* clean up code

* address PR comments

src/sql/workbench/contrib/notebook/test/electron-browser/cell.test.ts

@@ -1024,4 +1024,20 @@ suite('Cell Model', function (): void {
 		assert(!isEditMode);
 	});
 
+	test('Should read connection name from notebook metadata', async function () {
+		const connectionName = 'connectionName';
+		let notebookModel = new NotebookModelStub({
+			name: '',
+			version: '',
+			mimetype: ''
+		});
+		let contents: nb.ICellContents = {
+			cell_type: CellTypes.Code,
+			source: '',
+			metadata: { connection_name: connectionName }
+		};
+		let model = factory.createCell(contents, { notebook: notebookModel, isTrusted: false });
+		assert.equal(model.savedConnectionName, connectionName);
+	});
+
 });

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

@@ -39,6 +39,7 @@ export class CellModel extends Disposable implements ICellModel {
 	private _cellType: nb.CellType;
 	private _source: string | string[];
 	private _language: string;
+	private _savedConnectionName: string | undefined;
 	private _cellGuid: string;
 	private _future: FutureInternal;
 	private _outputs: nb.ICellOutput[] = [];
@@ -55,10 +56,10 @@ export class CellModel extends Disposable implements ICellModel {
 	private _cellUri: URI;
 	private _connectionManagementService: IConnectionManagementService;
 	private _stdInHandler: nb.MessageHandler<nb.IStdinMessage>;
-	private _metadata: { language?: string; tags?: string[]; cellGuid?: string; };
 	private _onCellLoaded = new Emitter<string>();
 	private _loaded: boolean;
 	private _stdInVisible: boolean;
+	private _metadata: nb.ICellMetadata;
 	private _isCollapsed: boolean;
 	private _onCollapseStateChanged = new Emitter<boolean>();
 	private _modelContentChangedEvent: IModelContentChangedEvent;
@@ -272,6 +273,10 @@ export class CellModel extends Disposable implements ICellModel {
 		return this._options.notebook.language;
 	}
 
+	public get savedConnectionName(): string | undefined {
+		return this._savedConnectionName;
+	}
+
 	public get cellGuid(): string {
 		return this._cellGuid;
 	}
@@ -804,6 +809,9 @@ export class CellModel extends Disposable implements ICellModel {
 			cellJson.metadata.tags = metadata.tags;
 			cellJson.outputs = this._outputs;
 			cellJson.execution_count = this.executionCount ? this.executionCount : null;
+			if (this._configurationService?.getValue('notebook.saveConnectionName')) {
+				metadata.connection_name = this._savedConnectionName;
+			}
 		}
 		return cellJson as nb.ICellContents;
 	}
@@ -828,6 +836,7 @@ export class CellModel extends Disposable implements ICellModel {
 
 		this._cellGuid = cell.metadata && cell.metadata.azdata_cell_guid ? cell.metadata.azdata_cell_guid : generateUuid();
 		this.setLanguageFromContents(cell);
+		this._savedConnectionName = this._metadata.connection_name;
 		if (cell.outputs) {
 			for (let output of cell.outputs) {
 				// For now, we're assuming it's OK to save these as-is with no modification

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

@@ -499,6 +499,7 @@ export interface ICellModel {
 	readonly onCellMarkdownModeChanged: Event<boolean>;
 	sendChangeToNotebook(change: NotebookChangeType): void;
 	cellSourceChanged: boolean;
+	readonly savedConnectionName: string | undefined;
 }
 
 export interface IModelFactory {