AL0067 - Meter should be registered with AddMeter()

Unregistered meters will not export metrics

Source: Al0067UnregisteredMeterAnalyzer.cs

Description

A Meter that is not registered via AddMeter() in the metrics configuration will silently drop all recorded measurements.

Bad Code

private static readonly Meter MyMeter = new("MyService.Orders");
// But metrics setup never calls .AddMeter("MyService.Orders")

Good Code

private static readonly Meter MyMeter = new("MyService.Orders");

// In startup:
builder.Services.AddOpenTelemetry()
    .WithMetrics(m => m.AddMeter("MyService.Orders"));

Properties

• Category: Metrics
• Severity: Warning
• Enabled by default: True
• Code fix available: False

Configuration

dotnet_diagnostic.AL0067.severity = warning