Azure Function Multioutput define parameter

Question

I am using Azure Function v4 with .NET 8.0 as Isolated Process and want to use multiple output binding as described here.

It looks like this:

public class MultiOutputType
{
    [KafkaOutput("BrokerList",
                 "topic")]
    public string KafkaEvent { get; set; }

    public IActionResult HttpResponse { get; set; }
}

and use this class like this

[Function("test")]
public MultiOutputType Run(
    [HttpTrigger(AuthorizationLevel.Function, "get", "post")] HttpRequest req)
{
    _logger.LogInformation("C# HTTP trigger function processed a request.");

    var kafkaEvent = "some event string";
    var httpResponse = new OkObjectResult("Test successful.");

    return new MultiOutputType
    {
        KafkaEvent = kafkaEvent,
        HttpResponse = httpResponse
    };
}

Now I do not want to hardcode parameters like BrokerList or topic defined in KafkaOutput but want to load these values from configuration like local.settings.json or environment variable.

How can I set these values in the attribute from configuration?

user3079834 · Accepted Answer · 2024-04-30 14:11:03Z

0

I figured it out, it can be done by putting %% around the variables, e.g. %BrokerList% and %topic% and define these values in local.settings.json or environment variable.

Hint: When adding these values in local.settings.json, they have to be put unter node "Values". Defining them by their own will not work (at least for me).

answered Apr 30, 2024 at 14:11

user3079834

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