diff --git a/build/Common.props b/build/Common.props
index 03ac93b08fb..012cececbc5 100644
--- a/build/Common.props
+++ b/build/Common.props
@@ -31,6 +31,7 @@
[2.1.1,6.0)
[3.3.3]
[17.3.0]
+ [3.1.0,)
[2.1.0,)
[3.1.0,)
[3.1.0,)
diff --git a/src/OpenTelemetry/OpenTelemetry.csproj b/src/OpenTelemetry/OpenTelemetry.csproj
index 542fcc9e407..b7f6e7fa3f7 100644
--- a/src/OpenTelemetry/OpenTelemetry.csproj
+++ b/src/OpenTelemetry/OpenTelemetry.csproj
@@ -19,6 +19,7 @@
+
diff --git a/src/OpenTelemetry/SdkOptions.cs b/src/OpenTelemetry/SdkOptions.cs
new file mode 100644
index 00000000000..9697d20f6b4
--- /dev/null
+++ b/src/OpenTelemetry/SdkOptions.cs
@@ -0,0 +1,68 @@
+//
+// 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.
+//
+
+#nullable enable
+
+using System;
+using System.Diagnostics;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Options;
+
+namespace OpenTelemetry
+{
+ public sealed class SdkOptions
+ {
+ private static Action? globalConfigureCallbacks;
+
+ public bool TracingEnabled { get; set; } = true;
+
+ public bool MetricsEnabled { get; set; } = true;
+
+ public bool LoggingEnabled { get; set; } = true;
+
+ public static void RegisterConfigureCallback(Action configure)
+ {
+ globalConfigureCallbacks += configure ?? throw new ArgumentNullException(nameof(configure));
+ }
+
+ internal sealed class ConfigureSdkOptions : IConfigureOptions
+ {
+ private readonly IConfiguration configuration;
+
+ public ConfigureSdkOptions(IConfiguration configuration)
+ {
+ Debug.Assert(configuration != null, "configuration was null");
+
+ this.configuration = configuration!;
+ }
+
+ public void Configure(SdkOptions options)
+ {
+ Debug.Assert(options != null, "options was null");
+
+ var globalDisableFlagValue = this.configuration.GetValue("OTEL_SDK_DISABLED", false);
+ if (globalDisableFlagValue)
+ {
+ options!.TracingEnabled = false;
+ options.MetricsEnabled = false;
+ options.LoggingEnabled = false;
+ }
+
+ globalConfigureCallbacks?.Invoke(options!);
+ }
+ }
+ }
+}
diff --git a/src/OpenTelemetry/Trace/Builder/TracerProviderBuilderBase.cs b/src/OpenTelemetry/Trace/Builder/TracerProviderBuilderBase.cs
index a747395308c..c337e65d65d 100644
--- a/src/OpenTelemetry/Trace/Builder/TracerProviderBuilderBase.cs
+++ b/src/OpenTelemetry/Trace/Builder/TracerProviderBuilderBase.cs
@@ -18,6 +18,7 @@
using System;
using System.Diagnostics;
+using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.Options;
@@ -51,8 +52,15 @@ internal TracerProviderBuilderBase(IServiceCollection services)
{
Guard.ThrowIfNull(services);
- services.AddOptions();
- services.TryAddSingleton(sp => new TracerProviderSdk(sp, ownsServiceProvider: false));
+ RegisterSharedServices(services);
+
+ services.TryAddSingleton(sp =>
+ {
+ var sdkOptions = sp.GetRequiredService>().Value;
+ return !sdkOptions.TracingEnabled
+ ? new NoopTracerProvider()
+ : new TracerProviderSdk(sp, ownsServiceProvider: false);
+ });
this.services = services;
this.ownsServices = false;
@@ -64,7 +72,7 @@ protected TracerProviderBuilderBase()
{
var services = new ServiceCollection();
- services.AddOptions();
+ RegisterSharedServices(services);
this.services = services;
this.ownsServices = true;
@@ -266,7 +274,24 @@ protected TracerProvider Build()
#endif
var serviceProvider = services.BuildServiceProvider(validateScopes);
- return new TracerProviderSdk(serviceProvider, ownsServiceProvider: true);
+ var sdkOptions = serviceProvider.GetRequiredService>().Value;
+ if (!sdkOptions.TracingEnabled)
+ {
+ serviceProvider.Dispose();
+
+ return new NoopTracerProvider();
+ }
+ else
+ {
+ return new TracerProviderSdk(serviceProvider, ownsServiceProvider: true);
+ }
+ }
+
+ private static void RegisterSharedServices(IServiceCollection services)
+ {
+ services.AddOptions();
+ services.TryAddSingleton(sp => new ConfigurationBuilder().AddEnvironmentVariables().Build());
+ services.TryAddSingleton, SdkOptions.ConfigureSdkOptions>();
}
private static BaseProcessor BuildExportProcessor(
diff --git a/src/OpenTelemetry/Trace/NoopTracerProvider.cs b/src/OpenTelemetry/Trace/NoopTracerProvider.cs
new file mode 100644
index 00000000000..ce1884f1def
--- /dev/null
+++ b/src/OpenTelemetry/Trace/NoopTracerProvider.cs
@@ -0,0 +1,24 @@
+//
+// 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.
+//
+
+#nullable enable
+
+namespace OpenTelemetry.Trace
+{
+ internal sealed class NoopTracerProvider : TracerProvider
+ {
+ }
+}