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OTLP exporter: Standardize handling of attributes (#3262)
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130 changes: 130 additions & 0 deletions
130
src/OpenTelemetry.Exporter.OpenTelemetryProtocol/Implementation/OtlpCommonExtensions.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| // <copyright file="OtlpCommonExtensions.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.Collections.Generic; | ||
| using System.Runtime.CompilerServices; | ||
| using OtlpCommon = Opentelemetry.Proto.Common.V1; | ||
|
|
||
| namespace OpenTelemetry.Exporter.OpenTelemetryProtocol.Implementation | ||
| { | ||
| internal static class OtlpCommonExtensions | ||
| { | ||
| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| public static OtlpCommon.KeyValue ToOtlpAttribute(this KeyValuePair<string, object> kvp) | ||
| { | ||
| if (kvp.Value == null) | ||
| { | ||
| return null; | ||
| } | ||
|
|
||
| var value = ToOtlpValue(kvp.Value); | ||
|
|
||
| if (value == null) | ||
| { | ||
| OpenTelemetryProtocolExporterEventSource.Log.UnsupportedAttributeType(kvp.Value.GetType().ToString(), kvp.Key); | ||
| return null; | ||
| } | ||
|
|
||
| return new OtlpCommon.KeyValue { Key = kvp.Key, Value = value }; | ||
| } | ||
|
|
||
| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| private static OtlpCommon.AnyValue ToOtlpValue(object value) | ||
| { | ||
| switch (value) | ||
| { | ||
| case char: | ||
| case string: | ||
| return new OtlpCommon.AnyValue { StringValue = Convert.ToString(value) }; | ||
| case bool b: | ||
| return new OtlpCommon.AnyValue { BoolValue = b }; | ||
| case byte: | ||
| case sbyte: | ||
| case short: | ||
| case ushort: | ||
| case int: | ||
| case uint: | ||
| case long: | ||
| return new OtlpCommon.AnyValue { IntValue = Convert.ToInt64(value) }; | ||
| case float: | ||
| case double: | ||
| return new OtlpCommon.AnyValue { DoubleValue = Convert.ToDouble(value) }; | ||
| case Array array: | ||
| return ToOtlpArrayValue(array); | ||
|
|
||
| // All other types are converted to strings including the following | ||
| // built-in value types: | ||
| // case nint: Pointer type. | ||
| // case nuint: Pointer type. | ||
| // case ulong: May throw an exception on overflow. | ||
| // case decimal: Converting to double produces rounding errors. | ||
| default: | ||
| try | ||
| { | ||
| return new OtlpCommon.AnyValue { StringValue = value.ToString() }; | ||
| } | ||
| catch | ||
| { | ||
| return null; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| private static OtlpCommon.AnyValue ToOtlpArrayValue(Array array) | ||
| { | ||
| #pragma warning disable SA1011 // Closing square brackets should be spaced correctly | ||
| var arrayValue = new OtlpCommon.ArrayValue(); | ||
| switch (array) | ||
| { | ||
| case char[]: | ||
| case string[]: | ||
| case bool[]: | ||
| case byte[]: | ||
| case sbyte[]: | ||
| case short[]: | ||
| case ushort[]: | ||
| case int[]: | ||
| case uint[]: | ||
| case long[]: | ||
| case float[]: | ||
| case double[]: | ||
| foreach (var item in array) | ||
| { | ||
| arrayValue.Values.Add(ToOtlpValue(item)); | ||
| } | ||
|
|
||
| return new OtlpCommon.AnyValue { ArrayValue = arrayValue }; | ||
| default: | ||
| foreach (var item in array) | ||
| { | ||
| try | ||
| { | ||
| arrayValue.Values.Add(ToOtlpValue(item.ToString())); | ||
| } | ||
| catch | ||
| { | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| return new OtlpCommon.AnyValue { ArrayValue = arrayValue }; | ||
| } | ||
| #pragma warning restore SA1011 // Closing square brackets should be spaced correctly | ||
| } | ||
| } | ||
| } |
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