.NET Bookshelf App

The Bookshelf app is a sample web app written in .NET that shows how to use a variety of Google Cloud Platform (GCP) products, including:

  • App Engine Flexible Environment
  • Cloud SQL
  • Cloud Datastore
  • Cloud Storage
  • Cloud Pub/Sub
  • Compute Engine

This tutorial explores the Bookshelf app and discusses how each feature of the app is implemented using familiar technologies and services provided by GCP.

Screen shot of the Bookshelf app showing controls and book covers

The Bookshelf sample app stores a collection of book titles. Anyone who has access to the app can add books to the list. The sample app offers these features:

  • Users can view the list of books
  • Users can add and remove books from the list.
  • Users can edit book details.
  • Users can upload cover images for books.

Objectives

  • Clone or download the sample app.
  • Build the app and run it on your local machine.
  • Deploy the app to App Engine.
  • Walk through the sample code.
  • Learn how the app stores structured data.
  • Learn how the app stores binary data in Cloud Storage.
  • Learn how the app uses Cloud Pub/Sub to send tasks to a background worker.

Costs

This tutorial uses billable components of GCP including Compute Engine.

This tutorial has several steps, and each step is documented on its own page. The final page of the tutorial includes instructions for cleaning up resources, so you won't continue to be billed for GCP services. If you decide not to complete all the steps of the tutorial, see the cleanup instructions on the final page.

Before you begin

  1. Use the GCP Console to set up your Google Cloud Platform project:
    1. Create a new GCP project, and then create an App Engine app and enable billing in that project.
      Go to App Engine

      When prompted, select the region where you want your App Engine app located and then enable billing. After your GCP project is created, the Dashboard opens.

    2. Enable the Cloud Datastore, Cloud Pub/Sub, Cloud Storage JSON, Stackdriver Logging, and Google+ APIs.

      Enable the APIs

  2. Download, install, and initialize the Cloud SDK.
    Download the SDK
  3. Acquire local credentials for authenticating with GCP services.
    gcloud auth application-default login
  4. Verify that your default project is correct.
    gcloud config list
    If the project ID listed in the output isn't the project that you intended to use for this tutorial, set the project by entering the following command:
    gcloud config set project [YOUR_PROJECT_ID]
    where [YOUR_PROJECT_ID] is the ID of the project you created or chose to use for this tutorial.
  5. Clone the sample repository.

    git clone https://github.com/GoogleCloudPlatform/getting-started-dotnet.git

    Alternatively, you can download the sample as a zip file and extract it.

This tutorial assumes that you have Visual Studio 2017 or later installed and are familiar with the .NET Framework and the C# language.

Creating a Compute Engine instance

Use the Cloud Marketplace to create a new Compute Engine instance that has Windows Server 2016 R2, Microsoft IIS, ASP.NET, and SQL Express preinstalled.

  1. In the GCP Console, go to the Cloud Marketplace ASP.NET Framework page.

  2. Set your deployment name to bookshelf-tutorial.

  3. Choose a Compute Engine zone.

  4. To deploy the instance, click Deploy.

Adding a user to the Compute Engine instance

After the deployment process finishes, add a default Windows user to your new instance.

  1. In the GCP Console, go to VM instances.

  2. Click bookshelf-tutorial.

  3. On the Instance page, click Set Windows password.

  4. In the Set new Windows password dialog, add your username, and click Set to create the user account on your instance.

  5. Make a note of the provided password, and close the dialog.

Tutorial structure

The Bookshelf tutorial has several parts that demonstrate how the sample app uses various GCP services.

The structured data part of the tutorial demonstrates how the sample app stores book information in a SQL or NoSQL database.

The app's web page displays a form where the user can enter the title, author, description, and publication date of a book. For each book entered, the app stores this information in a database, so it can be retrieved later for viewing or editing. For this step of the tutorial, you have your choice of three databases: Cloud SQL, Cloud Datastore, or SQL Server. After you complete this step with one of the databases, you can move on to the next step.

The Cloud Storage part of the tutorial demonstrates how the sample app stores binary data in Cloud Storage. On the app's web page, the user can specify a cover image for each book. The app stores the cover images in a Cloud Storage bucket.

The Cloud Pub/Sub part of the tutorial demonstrates how the app uses Cloud Pub/Sub to send tasks to a background worker. The worker gathers information from the Google Books API and updates the book information in the database.

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