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HistogramAttribute Class

Definition

Provides information to guide the production of a strongly typed histogram metric factory method and associated type.

public ref class HistogramAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Method)]
[System.Diagnostics.Conditional("CODE_GENERATION_ATTRIBUTES")]
public sealed class HistogramAttribute : Attribute
[<System.AttributeUsage(System.AttributeTargets.Method)>]
[<System.Diagnostics.Conditional("CODE_GENERATION_ATTRIBUTES")>]
type HistogramAttribute = class
    inherit Attribute
Public NotInheritable Class HistogramAttribute
Inherits Attribute
Inheritance
HistogramAttribute
Attributes

Examples

static partial class Metric
{
    [Histogram("RequestName", "RequestStatusCode")]
    static partial RequestLatency CreateRequestLatency(Meter meter);
}

Remarks

This attribute is applied to a method that has the following constraints:

  • Must be a partial method.
  • Must return metricName as the type. A class with that name will be generated.
  • Must not be generic.
  • Must have System.Diagnostics.Metrics.Meter as first parameter.
  • Must have all the keys provided in staticTags as string type parameters.

Constructors

HistogramAttribute(String[])

Initializes a new instance of the HistogramAttribute class.

HistogramAttribute(Type)

Initializes a new instance of the HistogramAttribute class.

Properties

Name

Gets or sets the name of the metric.

TagNames

Gets the metric's tags.

Type

Gets the type that supplies metric tag values.

TypeId

When implemented in a derived class, gets a unique identifier for this Attribute.

(Inherited from Attribute)

Methods

Equals(Object)

Returns a value that indicates whether this instance is equal to a specified object.

(Inherited from Attribute)
GetHashCode()

Returns the hash code for this instance.

(Inherited from Attribute)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
IsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(Inherited from Attribute)
Match(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(Inherited from Attribute)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Explicit Interface Implementations

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.

(Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.

(Inherited from Attribute)
_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.

(Inherited from Attribute)

Applies to