App service Perf. Improvements Fix

Tasks/AzureRmWebAppDeploymentV4/deploymentProvider/BuiltInLinuxWebAppDeploymentProvider.ts

@@ -9,6 +9,7 @@ export class BuiltInLinuxWebAppDeploymentProvider extends AzureRmWebAppDeploymen
     public async DeployWebAppStep() {
         tl.debug('Performing Linux built-in package deployment');
 
+        await this.kuduServiceUtility.warmpUp();
         this.zipDeploymentID = await this.kuduServiceUtility.zipDeploy(this.taskParams.Package.getPath(), false, this.taskParams.TakeAppOfflineFlag, 
             { slotName: this.appService.getSlot() });
 

Tasks/AzureRmWebAppDeploymentV4/operations/AzureAppServiceUtility.ts

@@ -141,9 +141,15 @@ export class AzureAppServiceUtility {
         }
 
         console.log(tl.loc('UpdatingAppServiceApplicationSettings', JSON.stringify(properties)));
-        await this._appService.patchApplicationSettings(properties);
+        var isNewValueUpdated: boolean = await this._appService.patchApplicationSettings(properties);
+
+        if(!isNewValueUpdated) {
+            console.log(tl.loc('UpdatedAppServiceApplicationSettings'));
+            return;
+        }
+
         var kuduService = await this.getKuduService();
-        var noOftimesToIterate: number = 6;
+        var noOftimesToIterate: number = 12;
         tl.debug('retrieving values from Kudu service to check if new values are updated');
         while(noOftimesToIterate > 0) {
             var kuduServiceAppSettings = await kuduService.getAppSettings();

Tasks/AzureRmWebAppDeploymentV4/operations/KuduServiceUtility.ts

@@ -218,6 +218,17 @@ export class KuduServiceUtility {
         }
     }
 
+    public async warmpUp() {
+        try {
+            tl.debug('warming up Kudu Service');
+            await this._appServiceKuduService.getAppSettings();
+            tl.debug('warmed up Kudu Service');
+        }
+        catch(error) {
+            tl.debug('Failed to warm-up Kudu: ' + error.toString());
+        }
+    }
+
     private async _printZipDeployLogs(log_url: string): Promise<void> {
         if(!log_url) {
             return;

Tasks/Common/azure-arm-rest/azure-arm-app-service.ts

@@ -207,14 +207,23 @@ export class AzureAppService {
         }
     }
 
-    public async patchApplicationSettings(properties): Promise<void> {
+    public async patchApplicationSettings(properties): Promise<boolean> {
         var applicationSettings = await this.getApplicationSettings();
+        var isNewValueUpdated: boolean = false;
         for(var key in properties) {
+            if(applicationSettings.properties[key] != properties[key]) {
+                tl.debug(`old value : ${applicationSettings.properties[key]}. new value: ${properties[key]}`);
+                isNewValueUpdated = true;
+            }
+
             applicationSettings.properties[key] = properties[key];
         }
 
-        await this.updateApplicationSettings(applicationSettings);
+        if(isNewValueUpdated) {
+            await this.updateApplicationSettings(applicationSettings);
+        }
 
+        return isNewValueUpdated;
     }
 
     public async getConfiguration(): Promise<AzureAppServiceConfigurationDetails> {