[SDK, Jaeger, Zipkin, & Otlp] Support loading envvars for BatchExportActivityProcessorOptions from IConfiguration

src/OpenTelemetry.Exporter.Jaeger/JaegerExporterOptions.cs

@@ -76,6 +76,8 @@ internal JaegerExporterOptions(IConfiguration configuration)
             {
                 this.Endpoint = endpoint;
             }
+
+            this.BatchExportProcessorOptions = new BatchExportActivityProcessorOptions(configuration);
         }
 
         /// <summary>
@@ -114,7 +116,7 @@ internal JaegerExporterOptions(IConfiguration configuration)
         /// <summary>
         /// Gets or sets the BatchExportProcessor options. Ignored unless ExportProcessorType is BatchExporter.
         /// </summary>
-        public BatchExportProcessorOptions<Activity> BatchExportProcessorOptions { get; set; } = new BatchExportActivityProcessorOptions();
+        public BatchExportProcessorOptions<Activity> BatchExportProcessorOptions { get; set; }
 
         /// <summary>
         /// Gets or sets the factory function called to create the <see

src/OpenTelemetry.Exporter.OpenTelemetryProtocol/OtlpExporterOptions.cs

@@ -88,6 +88,8 @@ internal OtlpExporterOptions(IConfiguration configuration)
                     Timeout = TimeSpan.FromMilliseconds(this.TimeoutMilliseconds),
                 };
             };
+
+            this.BatchExportProcessorOptions = new BatchExportActivityProcessorOptions(configuration);
         }
 
         /// <summary>
@@ -142,7 +144,7 @@ public Uri Endpoint
         /// <summary>
         /// Gets or sets the BatchExportProcessor options. Ignored unless ExportProcessorType is Batch.
         /// </summary>
-        public BatchExportProcessorOptions<Activity> BatchExportProcessorOptions { get; set; } = new BatchExportActivityProcessorOptions();
+        public BatchExportProcessorOptions<Activity> BatchExportProcessorOptions { get; set; }
 
         /// <summary>
         /// Gets or sets the factory function called to create the <see

src/OpenTelemetry.Exporter.Zipkin/ZipkinExporterOptions.cs

@@ -55,6 +55,8 @@ internal ZipkinExporterOptions(IConfiguration configuration)
             {
                 this.Endpoint = endpoint;
             }
+
+            this.BatchExportProcessorOptions = new BatchExportActivityProcessorOptions(configuration);
         }
 
         /// <summary>
@@ -81,7 +83,7 @@ internal ZipkinExporterOptions(IConfiguration configuration)
         /// <summary>
         /// Gets or sets the BatchExportProcessor options. Ignored unless ExportProcessorType is BatchExporter.
         /// </summary>
-        public BatchExportProcessorOptions<Activity> BatchExportProcessorOptions { get; set; } = new BatchExportActivityProcessorOptions();
+        public BatchExportProcessorOptions<Activity> BatchExportProcessorOptions { get; set; }
 
         /// <summary>
         /// Gets or sets the factory function called to create the <see

src/OpenTelemetry/.publicApi/net462/PublicAPI.Unshipped.txt

@@ -17,6 +17,7 @@ OpenTelemetry.Metrics.HistogramConfiguration.RecordMinMax.set -> void
 OpenTelemetry.Metrics.MetricPoint.GetHistogramMax() -> double
 OpenTelemetry.Metrics.MetricPoint.GetHistogramMin() -> double
 OpenTelemetry.Metrics.MetricPoint.HasMinMax() -> bool
+OpenTelemetry.Trace.BatchExportActivityProcessorOptions.BatchExportActivityProcessorOptions(Microsoft.Extensions.Configuration.IConfiguration! configuration) -> void
 static Microsoft.Extensions.DependencyInjection.MeterProviderBuilderServiceCollectionExtensions.ConfigureOpenTelemetryMetrics(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!
 static Microsoft.Extensions.DependencyInjection.MeterProviderBuilderServiceCollectionExtensions.ConfigureOpenTelemetryMetrics(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services, System.Action<OpenTelemetry.Metrics.MeterProviderBuilder!>! configure) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!
 static OpenTelemetry.Metrics.MeterProviderBuilderExtensions.AddInstrumentation<T>(this OpenTelemetry.Metrics.MeterProviderBuilder! meterProviderBuilder) -> OpenTelemetry.Metrics.MeterProviderBuilder!

src/OpenTelemetry/.publicApi/net6.0/PublicAPI.Unshipped.txt

@@ -17,6 +17,7 @@ OpenTelemetry.Metrics.HistogramConfiguration.RecordMinMax.set -> void
 OpenTelemetry.Metrics.MetricPoint.GetHistogramMax() -> double
 OpenTelemetry.Metrics.MetricPoint.GetHistogramMin() -> double
 OpenTelemetry.Metrics.MetricPoint.HasMinMax() -> bool
+OpenTelemetry.Trace.BatchExportActivityProcessorOptions.BatchExportActivityProcessorOptions(Microsoft.Extensions.Configuration.IConfiguration! configuration) -> void
 static Microsoft.Extensions.DependencyInjection.MeterProviderBuilderServiceCollectionExtensions.ConfigureOpenTelemetryMetrics(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!
 static Microsoft.Extensions.DependencyInjection.MeterProviderBuilderServiceCollectionExtensions.ConfigureOpenTelemetryMetrics(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services, System.Action<OpenTelemetry.Metrics.MeterProviderBuilder!>! configure) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!
 static OpenTelemetry.Metrics.MeterProviderBuilderExtensions.AddInstrumentation<T>(this OpenTelemetry.Metrics.MeterProviderBuilder! meterProviderBuilder) -> OpenTelemetry.Metrics.MeterProviderBuilder!

src/OpenTelemetry/.publicApi/netstandard2.0/PublicAPI.Unshipped.txt

@@ -17,6 +17,7 @@ OpenTelemetry.Metrics.HistogramConfiguration.RecordMinMax.set -> void
 OpenTelemetry.Metrics.MetricPoint.GetHistogramMax() -> double
 OpenTelemetry.Metrics.MetricPoint.GetHistogramMin() -> double
 OpenTelemetry.Metrics.MetricPoint.HasMinMax() -> bool
+OpenTelemetry.Trace.BatchExportActivityProcessorOptions.BatchExportActivityProcessorOptions(Microsoft.Extensions.Configuration.IConfiguration! configuration) -> void
 static Microsoft.Extensions.DependencyInjection.MeterProviderBuilderServiceCollectionExtensions.ConfigureOpenTelemetryMetrics(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!
 static Microsoft.Extensions.DependencyInjection.MeterProviderBuilderServiceCollectionExtensions.ConfigureOpenTelemetryMetrics(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services, System.Action<OpenTelemetry.Metrics.MeterProviderBuilder!>! configure) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!
 static OpenTelemetry.Metrics.MeterProviderBuilderExtensions.AddInstrumentation<T>(this OpenTelemetry.Metrics.MeterProviderBuilder! meterProviderBuilder) -> OpenTelemetry.Metrics.MeterProviderBuilder!

src/OpenTelemetry/.publicApi/netstandard2.1/PublicAPI.Unshipped.txt

@@ -17,6 +17,7 @@ OpenTelemetry.Metrics.HistogramConfiguration.RecordMinMax.set -> void
 OpenTelemetry.Metrics.MetricPoint.GetHistogramMax() -> double
 OpenTelemetry.Metrics.MetricPoint.GetHistogramMin() -> double
 OpenTelemetry.Metrics.MetricPoint.HasMinMax() -> bool
+OpenTelemetry.Trace.BatchExportActivityProcessorOptions.BatchExportActivityProcessorOptions(Microsoft.Extensions.Configuration.IConfiguration! configuration) -> void
 static Microsoft.Extensions.DependencyInjection.MeterProviderBuilderServiceCollectionExtensions.ConfigureOpenTelemetryMetrics(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!
 static Microsoft.Extensions.DependencyInjection.MeterProviderBuilderServiceCollectionExtensions.ConfigureOpenTelemetryMetrics(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services, System.Action<OpenTelemetry.Metrics.MeterProviderBuilder!>! configure) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!
 static OpenTelemetry.Metrics.MeterProviderBuilderExtensions.AddInstrumentation<T>(this OpenTelemetry.Metrics.MeterProviderBuilder! meterProviderBuilder) -> OpenTelemetry.Metrics.MeterProviderBuilder!

src/OpenTelemetry/CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## Unreleased
 
+* Added support for loading environment variables from `IConfiguration` when
+  using the `MetricReaderOptions` & `BatchExportActivityProcessorOptions`
+  classes.
+  ([#3760](https://github.com/open-telemetry/opentelemetry-dotnet/pull/3760),
+  [#3776](https://github.com/open-telemetry/opentelemetry-dotnet/pull/3776))
+
 ## 1.4.0-beta.2
 
 Released 2022-Oct-17

src/OpenTelemetry/Internal/Builder/ProviderBuilderServiceCollectionExtensions.cs

@@ -21,12 +21,31 @@
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using OpenTelemetry.Internal;
 using OpenTelemetry.Metrics;
+using OpenTelemetry.Trace;
 
 namespace Microsoft.Extensions.DependencyInjection;
 
 internal static class ProviderBuilderServiceCollectionExtensions
 {
-    public static IServiceCollection AddOpenTelemetryProviderBuilderServices(this IServiceCollection services)
+    public static IServiceCollection AddOpenTelemetryMeterProviderBuilderServices(this IServiceCollection services)
+    {
+        services.AddOpenTelemetryProviderBuilderServices();
+
+        services.RegisterOptionsFactory(configuration => new MetricReaderOptions(configuration));
+
+        return services;
+    }
+
+    public static IServiceCollection AddOpenTelemetryTracerProviderBuilderServices(this IServiceCollection services)
+    {
+        services.AddOpenTelemetryProviderBuilderServices();
+
+        services.RegisterOptionsFactory(configuration => new ExportActivityProcessorOptions(configuration));
+
+        return services;
+    }
+
+    private static IServiceCollection AddOpenTelemetryProviderBuilderServices(this IServiceCollection services)
     {
         Debug.Assert(services != null, "services was null");
 
@@ -41,13 +60,4 @@ public static IServiceCollection AddOpenTelemetryProviderBuilderServices(this IS
 
         return services!;
     }
-
-    public static IServiceCollection AddOpenTelemetryMeterProviderBuilderServices(this IServiceCollection services)
-    {
-        services.AddOpenTelemetryProviderBuilderServices();
-
-        services.RegisterOptionsFactory(configuration => new MetricReaderOptions(configuration));
-
-        return services;
-    }
 }

src/OpenTelemetry/Trace/BatchExportActivityProcessorOptions.cs

@@ -14,8 +14,11 @@
 // limitations under the License.
 // </copyright>
 
+#nullable enable
+
 using System;
 using System.Diagnostics;
+using Microsoft.Extensions.Configuration;
 using OpenTelemetry.Internal;
 
 namespace OpenTelemetry.Trace
@@ -39,26 +42,36 @@ public class BatchExportActivityProcessorOptions : BatchExportProcessorOptions<A
 
         internal const string ScheduledDelayEnvVarKey = "OTEL_BSP_SCHEDULE_DELAY";
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BatchExportActivityProcessorOptions"/> class.
+        /// </summary>
         public BatchExportActivityProcessorOptions()
+            : this(new ConfigurationBuilder().AddEnvironmentVariables().Build())
         {
-            int value;
+        }
 
-            if (EnvironmentVariableHelper.LoadNumeric(ExporterTimeoutEnvVarKey, out value))
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BatchExportActivityProcessorOptions"/> class.
+        /// </summary>
+        /// <param name="configuration"><see cref="IConfiguration"/>.</param>
+        public BatchExportActivityProcessorOptions(IConfiguration configuration)
+        {
+            if (configuration.TryGetIntValue(ExporterTimeoutEnvVarKey, out int value))
             {
                 this.ExporterTimeoutMilliseconds = value;
             }
 
-            if (EnvironmentVariableHelper.LoadNumeric(MaxExportBatchSizeEnvVarKey, out value))
+            if (configuration.TryGetIntValue(MaxExportBatchSizeEnvVarKey, out value))
             {
                 this.MaxExportBatchSize = value;
             }
 
-            if (EnvironmentVariableHelper.LoadNumeric(MaxQueueSizeEnvVarKey, out value))
+            if (configuration.TryGetIntValue(MaxQueueSizeEnvVarKey, out value))
             {
                 this.MaxQueueSize = value;
             }
 
-            if (EnvironmentVariableHelper.LoadNumeric(ScheduledDelayEnvVarKey, out value))
+            if (configuration.TryGetIntValue(ScheduledDelayEnvVarKey, out value))
             {
                 this.ScheduledDelayMilliseconds = value;
             }

src/OpenTelemetry/Trace/Builder/TracerProviderBuilderBase.cs

@@ -51,7 +51,7 @@ internal TracerProviderBuilderBase(IServiceCollection services)
         {
             Guard.ThrowIfNull(services);
 
-            services.AddOpenTelemetryProviderBuilderServices();
+            services.AddOpenTelemetryTracerProviderBuilderServices();
             services.TryAddSingleton<TracerProvider>(sp => new TracerProviderSdk(sp, ownsServiceProvider: false));
 
             this.services = services;
@@ -64,7 +64,7 @@ protected TracerProviderBuilderBase()
         {
             var services = new ServiceCollection();
 
-            services.AddOpenTelemetryProviderBuilderServices();
+            services.AddOpenTelemetryTracerProviderBuilderServices();
 
             this.services = services;
             this.ownsServices = true;

src/OpenTelemetry/Trace/ExportActivityProcessorOptions.cs

@@ -16,13 +16,30 @@
 
 #nullable enable
 
+using Microsoft.Extensions.Configuration;
 using OpenTelemetry.Internal;
 
 namespace OpenTelemetry.Trace;
 
+/// <summary>
+/// Options for configuring either a <see cref="SimpleActivityExportProcessor"/> or <see cref="BatchActivityExportProcessor"/>.
+/// </summary>
 public class ExportActivityProcessorOptions
 {
-    private BatchExportActivityProcessorOptions? batchExportProcessorOptions;
+    private BatchExportActivityProcessorOptions batchExportProcessorOptions;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ExportActivityProcessorOptions"/> class.
+    /// </summary>
+    public ExportActivityProcessorOptions()
+        : this(new ConfigurationBuilder().AddEnvironmentVariables().Build())
+    {
+    }
+
+    internal ExportActivityProcessorOptions(IConfiguration configuration)
+    {
+        this.batchExportProcessorOptions = new BatchExportActivityProcessorOptions(configuration);
+    }
 
     /// <summary>
     /// Gets or sets the export processor type to be used. The default value is <see cref="ExportProcessorType.Batch"/>.
@@ -34,7 +51,7 @@ public class ExportActivityProcessorOptions
     /// </summary>
     public BatchExportActivityProcessorOptions BatchExportProcessorOptions
     {
-        get => this.batchExportProcessorOptions ??= new();
+        get => this.batchExportProcessorOptions;
         set
         {
             Guard.ThrowIfNull(value);

test/OpenTelemetry.Tests/Trace/BatchExportActivityProcessorOptionsTest.cs

@@ -15,6 +15,8 @@
 // </copyright>
 
 using System;
+using System.Collections.Generic;
+using Microsoft.Extensions.Configuration;
 using Xunit;
 
 namespace OpenTelemetry.Trace.Tests
@@ -59,6 +61,36 @@ public void BatchExportProcessorOptions_EnvironmentVariableOverride()
             Assert.Equal(4, options.ScheduledDelayMilliseconds);
         }
 
+        [Fact]
+        public void ExportActivityProcessorOptions_UsingIConfiguration()
+        {
+            var values = new Dictionary<string, string>()
+            {
+                [BatchExportActivityProcessorOptions.MaxQueueSizeEnvVarKey] = "1",
+                [BatchExportActivityProcessorOptions.MaxExportBatchSizeEnvVarKey] = "2",
+                [BatchExportActivityProcessorOptions.ExporterTimeoutEnvVarKey] = "3",
+                [BatchExportActivityProcessorOptions.ScheduledDelayEnvVarKey] = "4",
+            };
+
+            var configuration = new ConfigurationBuilder()
+                .AddInMemoryCollection(values)
+                .Build();
+
+            var parentOptions = new ExportActivityProcessorOptions(configuration);
+
+            Assert.Equal(1, parentOptions.BatchExportProcessorOptions.MaxQueueSize);
+            Assert.Equal(2, parentOptions.BatchExportProcessorOptions.MaxExportBatchSize);
+            Assert.Equal(3, parentOptions.BatchExportProcessorOptions.ExporterTimeoutMilliseconds);
+            Assert.Equal(4, parentOptions.BatchExportProcessorOptions.ScheduledDelayMilliseconds);
+
+            var options = new BatchExportActivityProcessorOptions(configuration);
+
+            Assert.Equal(1, options.MaxQueueSize);
+            Assert.Equal(2, options.MaxExportBatchSize);
+            Assert.Equal(3, options.ExporterTimeoutMilliseconds);
+            Assert.Equal(4, options.ScheduledDelayMilliseconds);
+        }
+
         [Fact]
         public void BatchExportProcessorOptions_InvalidPortEnvironmentVariableOverride()
         {