prometheus-net

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namespace Prometheus;
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public sealed class SuppressDefaultMetricOptions
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{
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    internal static readonly SuppressDefaultMetricOptions SuppressAll = new()
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    {
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        SuppressProcessMetrics = true,
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        SuppressDebugMetrics = true,
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#if NET
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        SuppressEventCounters = true,
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#endif
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#if NET6_0_OR_GREATER
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        SuppressMeters = true
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#endif
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    };
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    internal static readonly SuppressDefaultMetricOptions SuppressNone = new()
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    {
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        SuppressProcessMetrics = false,
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        SuppressDebugMetrics = false,
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#if NET
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        SuppressEventCounters = false,
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#endif
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#if NET6_0_OR_GREATER
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        SuppressMeters = false
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#endif
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    };
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    /// <summary>
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    /// Suppress the current-process-inspecting metrics (uptime, resource use, ...).
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    /// </summary>
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    public bool SuppressProcessMetrics { get; set; }
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    /// <summary>
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    /// Suppress metrics that prometheus-net uses to report debug information about itself (e.g. number of metrics exported).
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    /// </summary>
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    public bool SuppressDebugMetrics { get; set; }
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#if NET
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    /// <summary>
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    /// Suppress the default .NET Event Counter integration.
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    /// </summary>
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    public bool SuppressEventCounters { get; set; }
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#endif
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#if NET6_0_OR_GREATER
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    /// <summary>
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    /// Suppress the .NET Meter API integration.
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    /// </summary>
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    public bool SuppressMeters { get; set; }
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#endif
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    internal sealed class ConfigurationCallbacks
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    {
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#if NET
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        public Action<EventCounterAdapterOptions> ConfigureEventCounterAdapter = delegate { };
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#endif
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#if NET6_0_OR_GREATER
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        public Action<MeterAdapterOptions> ConfigureMeterAdapter = delegate { };
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#endif
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    }
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    /// <summary>
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    /// Configures the default metrics registry based on the requested defaults behavior.
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    /// </summary>
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    internal void ApplyToDefaultRegistry(ConfigurationCallbacks configurationCallbacks)
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    {
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        if (!SuppressProcessMetrics)
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            DotNetStats.RegisterDefault();
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        if (!SuppressDebugMetrics)
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            Metrics.DefaultRegistry.StartCollectingRegistryMetrics();
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#if NET
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        if (!SuppressEventCounters)
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        {
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            var options = new EventCounterAdapterOptions();
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            configurationCallbacks.ConfigureEventCounterAdapter(options);
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            EventCounterAdapter.StartListening(options);
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        }
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#endif
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#if NET6_0_OR_GREATER
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        if (!SuppressMeters)
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        {
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            var options = new MeterAdapterOptions();
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            configurationCallbacks.ConfigureMeterAdapter(options);
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            MeterAdapter.StartListening(options);
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        }
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#endif
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    }
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}
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