Azure functions - function.json where is it located?

Question

I can see all over the net that bindings are configured in the function.json file. I have created a Azure Function project in Visual Studio, and I can see the file is generated in the out folder. But it is not part of my project. Is the idea, that you add it to your local.settings.json file, and then visual studio takes it from there to generate the file (including the deployment)? Or where should I add the bindings? Seems kind of strange, I would expect the local.settings.json to be a file that dosent get deployed to Azure.

Answer 1

If you're using compiled C# class library functions, the build process creates function.json (look in the bin directory)

See here: https://docs.microsoft.com/en-us/azure/azure-functions/functions-dotnet-class-library#functions-class-library-project

The build process creates a function.json file for each function. This function.json file is not meant to be edited directly. You can't change binding configuration or disable the function by editing this file. To learn how to disable a function, see How to disable functions.

Bindings are configured using attributes (see here)

[FunctionName("ServiceBusQueueTriggerCSharp")]                    
public static void Run(
    [ServiceBusTrigger("myqueue", AccessRights.Manage, Connection = "ServiceBusConnection")] 
    string myQueueItem,
    Int32 deliveryCount,
    DateTime enqueuedTimeUtc,
    string messageId,

    [Blob("sample-images-md/{name}", FileAccess.Write, Connection = "StorageConnectionAppSetting")] Stream outputBlob)

    ILogger log)
{
    log.LogInformation($"C# ServiceBus queue trigger function processed message: {myQueueItem}");
    log.LogInformation($"EnqueuedTimeUtc={enqueuedTimeUtc}");
    log.LogInformation($"DeliveryCount={deliveryCount}");
    log.LogInformation($"MessageId={messageId}");

    //now store something to outputBlob
}

StorageConnectionAppSetting is defined in config. For local, that's local.settings.json