Better logs when interpreter does not match kernel (#5510)

news/3 Code Health/5509.md

@@ -0,0 +1 @@
+Improvements to telemetry used to check if we're not starting the right interpreter (for a Python kernel).

src/client/datascience/jupyter/kernels/helpers.ts

@@ -32,6 +32,8 @@ import { traceInfo, traceInfoIf } from '../../../common/logger';
 import { getInterpreterHash } from '../../../pythonEnvironments/info/interpreter';
 import { getTelemetrySafeVersion } from '../../../telemetry/helpers';
 import { IS_CI_SERVER } from '../../../../test/ciConstants';
+import { trackKernelResourceInformation } from '../../telemetry/telemetry';
+import { Uri } from 'vscode';
 
 // Helper functions for dealing with kernels and kernelspecs
 
@@ -468,6 +470,7 @@ export async function sendTelemetryForPythonKernelExecutable(
             match: match ? 'true' : 'false',
             kernelConnectionType: kernelConnection.kind
         });
+        trackKernelResourceInformation(Uri.file(file), { interpreterMatchesKernel: match });
     } catch (ex) {
         // Noop.
     }

src/client/datascience/telemetry/telemetry.ts

@@ -22,6 +22,9 @@ import { InterpreterPackages } from './interpreterPackages';
 import { populateTelemetryWithErrorInfo } from '../../common/errors';
 import { createDeferred } from '../../common/utils/async';
 
+/**
+ * This information is sent with each telemetry event.
+ */
 type ContextualTelemetryProps = {
     kernelConnection: KernelConnectionMetadata;
     /**
@@ -38,6 +41,10 @@ type ContextualTelemetryProps = {
     kernelSpecCount: number; // Total number of kernel specs in list of kernels.
     kernelInterpreterCount: number; // Total number of interpreters in list of kernels
     kernelLiveCount: number; // Total number of live kernels in list of kernels.
+    /**
+     * When we start local Python kernels, this property indicates whether the interpreter matches the kernel. If not this means we've started the wrong interpreter or the mapping is wrong.
+     */
+    interpreterMatchesKernel: boolean;
 };
 
 type Context = {