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Tutorial: Local debugging for Cloudscript using Azure Functions

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With Azure Functions, you can now test and debug your CloudScript code locally. After you have completed this tutorial, you can run your local Azure Functions app under the debugger (e.g. in VS Code or Visual Studio), set your breakpoints and run your game client.

In this tutorial you learn how to:

  • Add an implementation of ExecuteFunction to your local Azure Functions app
  • Add a settings file to tell the PlayFab SDK to call that local implementation from your game

Prerequisites

Add a local implementation of ExecuteFunction

For C# Azure Functions apps

To get the local implementation of ExecuteFunction set up in your C# Azure Functions app, add the ExecuteFunction.cs file to your local Azure Functions app.

Required environment variables for local implementation of ExecuteFunction

Add the following settings to your local.settings.json file:

Name Value
PLAYFAB_TITLE_ID Your title ID, in hex form
PLAYFAB_DEV_SECRET_KEY Secret key for your title. You can find your secret keys in Game Manager by clicking on the gear icon to the right of your title's name and going to Title Settings > Secret Keys.

For example:

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "...",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet",
    "PLAYFAB_TITLE_ID": "B55D",
    "PLAYFAB_DEV_SECRET_KEY": "AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHIIIIJJJJKKKKLLLLMM"
  }
}

Configure PlayFab SDK to call local ExecuteFunction implementation

To tell the PlayFab SDK to redirect ExecuteFunction API calls to your local implementation, add a file called playfab.local.settings.json to one of two places:

  • The temporary directory on your machine
    • On Windows, this is the TEMP environment variable
    • On Linux/Mac, this is the TMPDIR environment variable
  • The directory of your game executable

Set the content of the file as follows:

{ "LocalApiServer": "http://localhost:<portNumber>/api/<functionName>" }

When you would like to stop local redirects and make ExecuteFunction call the PlayFab API server, delete the playfab.local.settings.json file.

Additional resources

Azure Functions has a great guide on how to test and debug your Functions locally.

Here are some highlights from the above document.