This is a voting app we used for a contest called the Windows 10 Demo Challenge. We wanted a way to collect votes from 2500 MSFTies at our annual Japan company meeting this past July, to determine our local winner for the Windows 10 Challenge. We only had one week to build, but we were able to use all the great tools available in Visual Studio, Microsoft Azure and PowerBI to create a quick web app for the voting.
The voting app uses ASP.NET vNext, AngularJS and sends votes to Azure Event Hubs, which are collected and transferred to Stream Analytics and finally visualized in PowerBI real time. We would have liked to use native client apps to send directly to Event Hubs, but we didn't have time to deploy something to the various app stores.
Thanks to the auto-scale features in Azure Websites, the resiliency provided by Event Hubs and the real time analytics provided by Stream Analytics and PowerBI,, we were able to handle 1000s of votes in a very short period of time.
The app can be improved as this was a learning project. It would be great to get it on the latest releases of ASP.NET vNext (currently app is written for Beta4). Also it could be made more generic as to handle other voting scenarios, made more secure, native client apps, etc. Go ahead and fork it on GitHub or send back your feedback directly.
Its a simple app, simple scenario to show these technologies in action.
- Organizational Azure Subscription (to connect to PowerBI)
- ASP.NET vNext Beta4
- Create the following services on Microsoft Azure using an organizational subscription (to use Stream Analytics connected to PowerBI).
- Empty Web App
- Service Bus Namespace containing Event Hub. Configure access policies and seperate consumer group for Stream Analytics.
- Stream Analytics service with an Input from your Event Hub and an Output to PowerBI. Query is included in StreamAnalyticsQuery.
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Clone this repository to your local machine.
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Three ways to configure your subscription information in the web app. The required settings come from the Microsoft Azure Event Hubs Dashboard -> View Connection String.
- Edit the config.json file.
- Copy config.json file to config.Development.json
- Configure in App Settings of the Azure Web App (use AppSettings:EventHubConnection and AppSettings:EventHubName as keys)
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From command line restore and publish your application using DNU. This is required because if you use Azure Web App git deploy, it will pull Beta5 (or current Beta). Make sure you are building against Beta4.
dnvm install 1.0.0-beta4
dnu restore
dnu publish --out C:\deploy --runtime dnx-clr-win-x86.1.0.0-beta4
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FTP the contents of C:\deploy to your Azure Web App "site" folder.