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Allow duplicate instrument registration (#2916)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| // <copyright file="InstrumentIdentity.cs" company="OpenTelemetry Authors"> | ||
| // Copyright The OpenTelemetry Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // </copyright> | ||
|
|
||
| using System; | ||
| using System.Diagnostics.Metrics; | ||
|
|
||
| namespace OpenTelemetry.Metrics | ||
| { | ||
| internal readonly struct InstrumentIdentity : IEquatable<InstrumentIdentity> | ||
| { | ||
| private readonly int hashCode; | ||
|
|
||
| public InstrumentIdentity(Meter meter, string instrumentName, string unit, string description, Type instrumentType) | ||
| { | ||
| this.MeterName = meter.Name; | ||
| this.MeterVersion = meter.Version ?? string.Empty; | ||
| this.InstrumentName = instrumentName; | ||
| this.Unit = unit ?? string.Empty; | ||
| this.Description = description ?? string.Empty; | ||
| this.InstrumentType = instrumentType; | ||
|
|
||
| unchecked | ||
| { | ||
| var hash = 17; | ||
| hash = (hash * 31) + this.InstrumentType.GetHashCode(); | ||
| hash = (hash * 31) + this.MeterName.GetHashCode(); | ||
| hash = (hash * 31) + this.MeterVersion.GetHashCode(); | ||
| hash = (hash * 31) + this.InstrumentName.GetHashCode(); | ||
| hash = this.Unit == null ? hash : (hash * 31) + this.Unit.GetHashCode(); | ||
| hash = this.Description == null ? hash : (hash * 31) + this.Description.GetHashCode(); | ||
| this.hashCode = hash; | ||
| } | ||
| } | ||
|
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| public readonly string MeterName { get; } | ||
|
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| public readonly string MeterVersion { get; } | ||
|
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| public readonly string InstrumentName { get; } | ||
|
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| public readonly string Unit { get; } | ||
|
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| public readonly string Description { get; } | ||
|
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| public readonly Type InstrumentType { get; } | ||
|
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| public static bool operator ==(InstrumentIdentity metricIdentity1, InstrumentIdentity metricIdentity2) => metricIdentity1.Equals(metricIdentity2); | ||
|
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| public static bool operator !=(InstrumentIdentity metricIdentity1, InstrumentIdentity metricIdentity2) => !metricIdentity1.Equals(metricIdentity2); | ||
|
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| public readonly override bool Equals(object obj) | ||
| { | ||
| return obj is InstrumentIdentity other && this.Equals(other); | ||
| } | ||
|
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| public bool Equals(InstrumentIdentity other) | ||
| { | ||
| return this.InstrumentType == other.InstrumentType | ||
| && this.MeterName == other.MeterName | ||
| && this.MeterVersion == other.MeterVersion | ||
| && this.InstrumentName == other.InstrumentName | ||
| && this.Unit == other.Unit | ||
| && this.Description == other.Description; | ||
| } | ||
|
|
||
| public readonly override int GetHashCode() => this.hashCode; | ||
| } | ||
| } |
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