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TAS Basics with .NET Framework and Redis

This exercise will cover the following:

  • Building a simple web service with ASP.Net (.NET Framework)
  • Deploying the service to TAS
  • Using Steeltoe to bind to a redis cloud instance
  • Doing a blue/green deployment with TAS

Pre-Requisites

Visual Studio

  1. This demo requires a Windows workstation
  2. Install either Visual Studio IDE from this URL: https://visualstudio.microsoft.com/

Cloud Foundry Command Line Interface (CLI)

  1. Install the Cloud Foundry CLI from this URL: https://docs.cloudfoundry.org/cf-cli/install-go-cli.html
  2. Verify the install by opening a terminal or command window and typing cf --version. You should see a version string to match the version you installed

Obtain TAS Credentials

If you are using a private installation of TAS, then obtain credentials and API enpoint information from your TAS platform team. If you are using Pivotal Web Services (the public PCF instance hosted by Pivotal), then go to https://run.pivotal.io/ and register for a free account.

Once you have credentials, login with the CLI...

  1. Open a terminal or command window and login to PCF with the command cf login -a api.run.pivotal.io (or whatever API endpoint you are using if not Pivotal Web Services)
  2. Enter the email you registered and the password you set

Build a Simple Web Service

Create the Basic Project

  1. Open VisualStudio
  2. Take the option to "Create a New Project"
  3. Select the template "ASP.NET Web Application (.NET Framework)
  4. Name the project "MicroserviceWorkshop", press "Next"
  5. Select the "Web API" template, press "Create"
  6. Run the new web service by pressing F5 in Visual Studio, a browser window should open with a default home page
  7. Navigate to {base URL}/api/values - you should see an XML document with "value1" and "value2"
  8. Stop the service with Shift-F5 (or press the stop button in Visual Studio)

Deploy to Tanzu Application Service

  1. Create a file manifest.yml in the project root directory (not the solution root directory - the project is typically a subdirectory of the solution). Set its contents to the following:

    applications:
- name: MicroserviceWorkshop
  random-route: true
  stack: windows
  buildpacks:
  - hwc_buildpack

  2. Open developer powershell and make sure you are in the project root directory

  3. cf push

During the push process, TAS will create a route for the app. Make note of the route - you can access the application at this URL once the application has started.

Once the application has started, you can access the application at the route created in TAS (something like https://microserviceworkshop-grumpy-elephant.cfapps.io)