Meter tags not attached

[WeihanLi]

Meter.Create with tags, the tags not attached to the metrics, is this a bug or by design?

For example:

public static class MetricsSample
{
    public static void Main()
    {
        var services = new ServiceCollection();
        services.AddMetrics();
        using var serviceProvider = services.BuildServiceProvider();

        using var meterProvider = Sdk.CreateMeterProviderBuilder()
            .AddMeter(nameof(MetricsSample))
            .AddConsoleExporter()
            .Build();
        
        var meterFactory = serviceProvider.GetRequiredService<IMeterFactory>();
        var meter = meterFactory.Create(nameof(MetricsSample));
        var counter = meter.CreateCounter<int>("test-counter", null, "test counter", GetMetricTags());
        var observableGauge = meter.CreateObservableGauge("test-o-gauge", () => DateTimeOffset.UtcNow.ToUnixTimeSeconds(), null, null, GetMetricTags());

        while (!Console.KeyAvailable)
        {
            Thread.Sleep(1000);
            counter.Add(Random.Shared.Next(100), new KeyValuePair<string, object?>("host", Environment.MachineName));
        }

        Console.ReadLine();
    }

    private static IEnumerable<KeyValuePair<string, object?>> GetMetricTags()
    {
        yield return new KeyValuePair<string, object?>("machine_name", Environment.MachineName);
        yield return new KeyValuePair<string, object?>("pid", Environment.ProcessId);
    }
}

Metrics output:

Should the machine_name be attached to the exported metrics tags?

The library version I used is 1.6.0

[cijothomas]

Duplicate of #4563 - Not yet done.

Separately, processid,machinename should be modelled as Resources, not Meter tags.

[WeihanLi]

Thanks very much