Improve activation time (#362)

* Defer importing ./configure/activate - azure-arm-websites takes really long to import for some reason
* Defer extension activation

package.json

@@ -37,7 +37,9 @@
         "CI/CD"
     ],
     "activationEvents": [
-        "*"
+        "onLanguage:azure-pipelines",
+        "onCommand:configure-pipeline",
+        "onCommand:browse-pipeline"
     ],
     "main": "./out/extension",
     "contributes": {

src/extension.ts

@@ -8,7 +8,6 @@ import * as vscode from 'vscode';
 import { createTelemetryReporter, callWithTelemetryAndErrorHandling, IActionContext, AzureUserInput, registerUIExtensionVariables } from 'vscode-azureextensionui';
 import * as languageclient from 'vscode-languageclient';
 
-import { activateConfigurePipeline } from './configure/activate';
 import { extensionVariables } from './configure/model/models';
 import * as logger from './logger';
 import { SchemaAssociationService, SchemaAssociationNotification } from './schema-association-service';
@@ -16,12 +15,11 @@ import { schemaContributor, CUSTOM_SCHEMA_REQUEST, CUSTOM_CONTENT_REQUEST } from
 import { telemetryHelper } from './configure/helper/telemetryHelper';
 import { TelemetryKeys } from './configure/resources/telemetryKeys';
 
-const configurePipelineEnabled: boolean = vscode.workspace.getConfiguration('[azure-pipelines]', null).get('configure') ? true : false;
-
 export async function activate(context: vscode.ExtensionContext) {
     extensionVariables.reporter = createTelemetryReporter(context);
     registerUiVariables(context);
 
+    const configurePipelineEnabled = vscode.workspace.getConfiguration('[azure-pipelines]').get<boolean>('configure', true);
     await callWithTelemetryAndErrorHandling('azurePipelines.activate', async (activateContext: IActionContext) => {
         activateContext.telemetry.properties.isActivationEvent = 'true';
         telemetryHelper.initialize(activateContext, 'activate');
@@ -30,6 +28,7 @@ export async function activate(context: vscode.ExtensionContext) {
             async () => {
                 await activateYmlContributor(context);
                 if (configurePipelineEnabled) {
+                    const { activateConfigurePipeline } = await import('./configure/activate');
                     await activateConfigurePipeline();
                 }
             },
@@ -134,4 +133,4 @@ function getClientOptions(): languageclient.LanguageClientOptions {
 
 // this method is called when your extension is deactivated
 export function deactivate() {
-}
+}