Add support for telemetry from LS and remove obsolete LS option (micr…

…osoft#2978)

For microsoft#2940

src/client/activation/interpreterDataService.ts

@@ -20,7 +20,6 @@ export class InterpreterData {
     // tslint:disable-next-line:no-shadowed-variable
     public readonly path: string,
     public readonly version: string,
-    public readonly prefix: string,
     public readonly searchPaths: string,
     public readonly hash: string
   ) { }
@@ -81,26 +80,23 @@ export class InterpreterDataService {
   }
 
   private async getInterpreterDataFromPython(execService: IPythonExecutionService, interpreterPath: string): Promise<InterpreterData> {
-    const result = await execService.exec(['-c', 'import sys; print(sys.version_info); print(sys.prefix)'], {});
-    // 2.7.14 (v2.7.14:84471935ed, Sep 16 2017, 20:19:30) <<SOMETIMES NEW LINE HERE>>
-    // [MSC v.1500 32 bit (Intel)]
-    // C:\Python27
+    const result = await execService.exec(['-c', 'import sys; print(sys.version_info)'], {});
+    // sys.version_info(major=3, minor=6, micro=6, releaselevel='final', serial=0)
     if (!result.stdout) {
       throw Error('Unable to determine Python interpreter version and system prefix.');
     }
     const output = result.stdout.splitLines({ removeEmptyEntries: true, trim: true });
-    if (!output || output.length < 2) {
+    if (!output || output.length < 1) {
       throw Error('Unable to parse version and and system prefix from the Python interpreter output.');
     }
     const majorMatches = output[0].match(/major=(\d*?),/);
     const minorMatches = output[0].match(/minor=(\d*?),/);
     if (!majorMatches || majorMatches.length < 2 || !minorMatches || minorMatches.length < 2) {
       throw Error('Unable to parse interpreter version.');
     }
-    const prefix = output[output.length - 1];
     const hash = await this.getInterpreterHash(interpreterPath);
     const searchPaths = await this.getSearchPaths(execService);
-    return new InterpreterData(DataVersion, interpreterPath, `${majorMatches[1]}.${minorMatches[1]}`, prefix, searchPaths, hash);
+    return new InterpreterData(DataVersion, interpreterPath, `${majorMatches[1]}.${minorMatches[1]}`, searchPaths, hash);
   }
 
   private async getSearchPaths(execService: IPythonExecutionService): Promise<string> {

src/client/activation/languageServer/languageServer.ts

@@ -33,7 +33,8 @@ import { LanguageServerSymbolProvider } from '../../providers/symbolProvider';
 import { sendTelemetryEvent } from '../../telemetry';
 import {
     PYTHON_LANGUAGE_SERVER_ENABLED,
-    PYTHON_LANGUAGE_SERVER_ERROR
+    PYTHON_LANGUAGE_SERVER_ERROR,
+    PYTHON_LANGUAGE_SERVER_TELEMETRY
 } from '../../telemetry/constants';
 import { IUnitTestManagementService } from '../../unittests/types';
 import { LanguageServerDownloader } from '../downloader';
@@ -164,6 +165,10 @@ export class LanguageServerExtensionActivator implements IExtensionActivator {
         this.languageClient = this.createSelfContainedLanguageClient(serverModule, clientOptions);
         try {
             await this.startLanguageClient();
+            this.languageClient.onTelemetry(telemetryEvent => {
+                const eventName = telemetryEvent.Name ? telemetryEvent.Name : PYTHON_LANGUAGE_SERVER_TELEMETRY;
+                sendTelemetryEvent(eventName, telemetryEvent.Measurements,  telemetryEvent.Properties);
+            });
             return true;
         } catch (ex) {
             this.appShell.showErrorMessage(`Language server failed to start. Error ${ex}`);
@@ -212,8 +217,7 @@ export class LanguageServerExtensionActivator implements IExtensionActivator {
 
     // tslint:disable-next-line:member-ordering
     public async getAnalysisOptions(): Promise<LanguageClientOptions | undefined> {
-        // tslint:disable-next-line:no-any
-        const properties = new Map<string, any>();
+        const properties = new Map<string, {}>();
         let interpreterData: InterpreterData | undefined;
         let pythonPath = '';
 
@@ -231,8 +235,6 @@ export class LanguageServerExtensionActivator implements IExtensionActivator {
             properties['InterpreterPath'] = interpreterData.path;
             // tslint:disable-next-line:no-string-literal
             properties['Version'] = interpreterData.version;
-            // tslint:disable-next-line:no-string-literal
-            properties['PrefixPath'] = interpreterData.prefix;
         }
 
         // tslint:disable-next-line:no-string-literal

src/client/telemetry/constants.ts

@@ -40,6 +40,7 @@ export const PYTHON_LANGUAGE_SERVER_DOWNLOADED = 'PYTHON_LANGUAGE_SERVER.DOWNLOA
 export const PYTHON_LANGUAGE_SERVER_ERROR = 'PYTHON_LANGUAGE_SERVER.ERROR';
 export const PYTHON_LANGUAGE_SERVER_STARTUP = 'PYTHON_LANGUAGE_SERVER.STARTUP';
 export const PYTHON_LANGUAGE_SERVER_PLATFORM_NOT_SUPPORTED = 'PYTHON_LANGUAGE_SERVER.PLATFORM_NOT_SUPPORTED';
+export const PYTHON_LANGUAGE_SERVER_TELEMETRY = 'PYTHON_LANGUAGE_SERVER.EVENT';
 
 export const TERMINAL_CREATE = 'TERMINAL.CREATE';
 export const PYTHON_LANGUAGE_SERVER_LIST_BLOB_STORE_PACKAGES = 'PYTHON_LANGUAGE_SERVER.LIST_BLOB_PACKAGES';

src/client/telemetry/types.ts

@@ -15,7 +15,7 @@ export type FormatTelemetry = {
     formatSelection: boolean;
 };
 
-export type LanguageServerTelemetry = {
+export type LanguageServerVersionTelemetry = {
     success: boolean;
     lsVersion?: string;
 };
@@ -24,6 +24,10 @@ export type LanguageServerErrorTelemetry = {
     error: string;
 };
 
+export type LanguageServerTelemetry = {
+    [key: string]: string;
+};
+
 export type LinterTrigger = 'auto' | 'save';
 
 export type LintingTelemetry = {
@@ -86,6 +90,7 @@ export type TerminalTelemetry = {
 };
 export type TelemetryProperties = FormatTelemetry
     | LanguageServerTelemetry
+    | LanguageServerVersionTelemetry
     | LanguageServerErrorTelemetry
     | LintingTelemetry
     | EditorLoadTelemetry