Add logging

Author: DonJayamanne

src/notebooks/controllers/controllerLoader.ts

@@ -155,7 +155,9 @@ export class ControllerLoader implements IControllerLoader, IExtensionSyncActiva
 
         // If we have any out of date connections, dispose of them
         disposedControllers.forEach((controller) => {
-            traceInfoIfCI(`Disposing controller ${controller.id}`);
+            traceInfoIfCI(
+                `Disposing controller ${controller.id}, associated with connection ${controller.connection.id}`
+            );
             controller.dispose(); // This should remove it from the registered list
         });
 

src/notebooks/controllers/controllerRegistration.ts

@@ -36,7 +36,7 @@ import {
 } from '../../platform/common/types';
 import { swallowExceptions } from '../../platform/common/utils/decorators';
 import { IServiceContainer } from '../../platform/ioc/types';
-import { traceError, traceWarning } from '../../platform/logging';
+import { traceError, traceVerbose, traceWarning } from '../../platform/logging';
 import { sendTelemetryEvent, Telemetry } from '../../telemetry';
 import { NotebookCellLanguageService } from '../languages/cellLanguageService';
 import { KernelFilterService } from './kernelFilter/kernelFilterService';
@@ -174,6 +174,7 @@ export class ControllerRegistration implements IControllerRegistration {
                     controller.onNotebookControllerSelectionChanged((e) => {
                         if (!e.selected && this.isFiltered(controller.connection)) {
                             // This item was selected but is no longer allowed in the kernel list. Remove it
+                            traceVerbose(`Removing controller ${controller.id} from kernel list`);
                             controller.dispose();
                         }
                     });

src/notebooks/controllers/vscodeNotebookController.ts

@@ -243,6 +243,14 @@ export class VSCodeNotebookController implements Disposable, IVSCodeNotebookCont
     }
 
     public dispose() {
+        traceVerbose(
+            `Disposing controller ${this.id} associated with connection ${
+                this.connection.id
+            } and documents ${this.notebookApi.notebookDocuments
+                .filter((item) => this.associatedDocuments.has(item))
+                .map((item) => item.uri.toString())
+                .join(', ')}`
+        );
         if (!this.isDisposed) {
             this.isDisposed = true;
             this._onNotebookControllerSelected.dispose();