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[Zipkin] Support loading envvars from IConfiguration #3759

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merged 2 commits into from
Oct 12, 2022
Merged

[Zipkin] Support loading envvars from IConfiguration #3759

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ddaedc3
Support loading envvars from IConfiguration in Zipkin exporter.
CodeBlanch Oct 12, 2022
4abe479
CHANGELOG patch.
CodeBlanch Oct 12, 2022
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4 changes: 4 additions & 0 deletions src/OpenTelemetry.Exporter.Zipkin/CHANGELOG.md
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Expand Up @@ -2,6 +2,10 @@

## Unreleased

* Added support for loading environment variables from `IConfiguration` when
using the `AddZipkinExporter` extension
([#3759](https://github.com/open-telemetry/opentelemetry-dotnet/pull/3759))

## 1.4.0-beta.1

Released 2022-Sep-29
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2 changes: 1 addition & 1 deletion src/OpenTelemetry.Exporter.Zipkin/OpenTelemetry.Exporter.Zipkin.csproj
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Expand Up @@ -14,7 +14,7 @@
<Compile Include="$(RepoRoot)\src\OpenTelemetry.Api\Internal\ActivityHelperExtensions.cs" Link="Includes\ActivityHelperExtensions.cs" />
<Compile Include="$(RepoRoot)\src\OpenTelemetry.Api\Internal\StatusHelper.cs" Link="Includes\StatusHelper.cs" />
<Compile Include="$(RepoRoot)\src\OpenTelemetry.Api\Internal\Guard.cs" Link="Includes\Guard.cs" />
<Compile Include="$(RepoRoot)\src\OpenTelemetry\Internal\EnvironmentVariableHelper.cs" Link="Includes\EnvironmentVariableHelper.cs" />
<Compile Include="$(RepoRoot)\src\OpenTelemetry\Internal\ConfigurationExtensions.cs" Link="Includes\ConfigurationExtensions.cs" />
<Compile Include="$(RepoRoot)\src\OpenTelemetry\Internal\OpenTelemetrySdkEventSource.cs" Link="Includes\OpenTelemetrySdkEventSource.cs" />
<Compile Include="$(RepoRoot)\src\OpenTelemetry\Internal\PooledList.cs" Link="Includes\PooledList.cs" />
<Compile Include="$(RepoRoot)\src\OpenTelemetry\Internal\PeerServiceResolver.cs" Link="Includes\PeerServiceResolver.cs" />
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11 changes: 8 additions & 3 deletions src/OpenTelemetry.Exporter.Zipkin/ZipkinExporterHelperExtensions.cs
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Expand Up @@ -62,10 +62,15 @@ public static TracerProviderBuilder AddZipkinExporter(

name ??= Options.DefaultName;

if (configure != null)
builder.ConfigureServices(services =>
{
builder.ConfigureServices(services => services.Configure(name, configure));
}
if (configure != null)
{
services.Configure(name, configure);
}

services.RegisterOptionsFactory(configuration => new ZipkinExporterOptions(configuration));
});

return builder.ConfigureBuilder((sp, builder) =>
{
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8 changes: 7 additions & 1 deletion src/OpenTelemetry.Exporter.Zipkin/ZipkinExporterOptions.cs
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Expand Up @@ -17,6 +17,7 @@
using System;
using System.Diagnostics;
using System.Net.Http;
using Microsoft.Extensions.Configuration;
using OpenTelemetry.Internal;
using OpenTelemetry.Trace;

Expand Down Expand Up @@ -44,8 +45,13 @@ public sealed class ZipkinExporterOptions
/// Initializes zipkin endpoint.
/// </summary>
public ZipkinExporterOptions()
: this(new ConfigurationBuilder().AddEnvironmentVariables().Build())
{
if (EnvironmentVariableHelper.LoadUri(ZipkinEndpointEnvVar, out Uri endpoint))
}

internal ZipkinExporterOptions(IConfiguration configuration)
{
if (configuration.TryGetUriValue(ZipkinEndpointEnvVar, out var endpoint))
{
this.Endpoint = endpoint;
}
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18 changes: 18 additions & 0 deletions test/OpenTelemetry.Exporter.Zipkin.Tests/ZipkinExporterTests.cs
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Expand Up @@ -23,6 +23,7 @@
using System.Net;
using System.Net.Http;
using System.Text;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using OpenTelemetry.Exporter.Zipkin.Implementation;
using OpenTelemetry.Resources;
Expand Down Expand Up @@ -207,6 +208,23 @@ public void ErrorGettingUriFromEnvVarSetsDefaultEndpointValue()
}
}

[Fact]
public void EndpointConfigurationUsingIConfiguration()
{
var values = new Dictionary<string, string>()
{
[ZipkinExporterOptions.ZipkinEndpointEnvVar] = "http://custom-endpoint:12345",
};

var configuration = new ConfigurationBuilder()
.AddInMemoryCollection(values)
.Build();

var options = new ZipkinExporterOptions(configuration);

Assert.Equal(new Uri("http://custom-endpoint:12345"), options.Endpoint);
}

[Fact]
public void UserHttpFactoryCalled()
{
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