Using LogMetric in an Azure Function 8.0 isolated mode

Question

I have installed Microsoft.Extensions.Logging, but I get following compiler error:

'ILogger' does not contain a definition for 'LogMetric' and no accessible extension method 'LogMetric'.

Any pointers on what to install to be able to log to metrics from an Azure Function App 8.0?

RithwikBojja · Accepted Answer

The issue seems to be with your packages and after changing the packages to below, it worked for me:

I have used Microsoft.Azure.Functions.Worker.ApplicationInsights package.

My packages in csproj:

Function1.cs:

using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Extensions.Logging;

namespace FunctionApp182
{
    public class Function1
    {
        private readonly ILogger _logger;
        public Function1(ILogger logger)
        {
            _logger = logger;
        }
        [Function("Function1")]
        public IActionResult Run([HttpTrigger(AuthorizationLevel.Function, "get", "post")] HttpRequest req)
        {
            _logger.LogInformation("Hello Rithwik, Func Started");
            _logger.LogMetric("rithwik", 8);
            return new OkObjectResult("Hello Rithwik, Func Ended");
        }
    }
}

Program.cs:

using Microsoft.Azure.Functions.Worker;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

var host = new HostBuilder()
    .ConfigureFunctionsWebApplication()
    .ConfigureServices(services =>
    {
        services.AddApplicationInsightsTelemetryWorkerService();
        services.ConfigureFunctionsApplicationInsights();
    })
    .Build();

host.Run();

Output:

In Application Insights:

enter image description here

In local:

enter image description here

Using LogMetric in an Azure Function 8.0 isolated mode

Answers (1)

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