SigV4 Authentication support for http/protobuf exporter (#177)

Author: liustve

src/AWS.Distro.OpenTelemetry.AutoInstrumentation/AWS.Distro.OpenTelemetry.AutoInstrumentation.csproj

@@ -16,7 +16,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0" />
-    <PackageReference Include="AWSSDK.Core" Version="3.7.303.27" />
+    <PackageReference Include="AWSSDK.Core" Version="3.7.300" />
+    <PackageReference Include="AWSSDK.XRay" Version="3.7.300" />
     <PackageReference Include="Amazon.Lambda.Serialization.Json" Version="2.2.4" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="OpenTelemetry" Version="1.9.0" />

src/AWS.Distro.OpenTelemetry.AutoInstrumentation/GlobalSuppressions.cs

@@ -22,12 +22,13 @@
 [assembly: SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1402:File may only contain a single type", Justification = "Reviewed", Scope = "type", Target = "~T:UdpExporter")]
 [assembly: SuppressMessage("Design", "CA1050:Declare types in namespaces", Justification = "Reviewed", Scope = "type", Target = "~T:UdpExporter")]
 [assembly: SuppressMessage("StyleCop.CSharp.SpacingRules", "SA1011:Closing square brackets should be spaced correctly", Justification = "Reviewed", Scope = "member", Target = "~M:OtlpUdpExporter.Export(OpenTelemetry.Batch{System.Diagnostics.Activity}@)~OpenTelemetry.ExportResult")]
-[assembly: SuppressMessage("StyleCop.CSharp.SpacingRules", "SA1011:Closing square brackets should be spaced correctly", Justification = "Reviewed", Scope = "member", Target = "~M:OtlpUdpExporter.SerializeSpans(OpenTelemetry.Batch{System.Diagnostics.Activity})~System.Byte[]")]
 [assembly: SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1402:File may only contain a single type", Justification = "Reviewed", Scope = "type", Target = "~T:StatusCodeConverter")]
 [assembly: SuppressMessage("StyleCop.CSharp.NamingRules", "SA1307:Accessible fields should begin with upper-case letter", Justification = "Reviewed", Scope = "member", Target = "~F:AWS.Distro.OpenTelemetry.AutoInstrumentation.Version.version")]
 [assembly: SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1400:Access modifier should be declared", Justification = "Reviewed", Scope = "type", Target = "~T:AWS.Distro.OpenTelemetry.AutoInstrumentation.Version")]
 [assembly: SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1401:Fields should be private", Justification = "Reviewed", Scope = "member", Target = "~F:AWS.Distro.OpenTelemetry.AutoInstrumentation.Version.version")]
 [assembly: SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1636:File header copyright text should match", Justification = "Reviewed")]
 [assembly: SuppressMessage("StyleCop.CSharp.SpacingRules", "SA1011:Closing square brackets should be spaced correctly", Justification = "Reviewed", Scope = "member", Target = "~M:OtlpExporterUtils.SerializeSpans(OpenTelemetry.Batch{System.Diagnostics.Activity},OpenTelemetry.Resources.Resource)~System.Byte[]")]
+[assembly: SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1402:File may only contain a single type", Justification = "Reviewed", Scope = "type", Target = "~T:RetryHelper")]
+[assembly: SuppressMessage("StyleCop.CSharp.SpacingRules", "SA1011:Closing square brackets should be spaced correctly", Justification = "Reviewed", Scope = "member", Target = "~M:OtlpAwsSpanExporter.Export(OpenTelemetry.Batch{System.Diagnostics.Activity}@)~OpenTelemetry.ExportResult,~M:OtlpUdpExporter.SerializeSpans(OpenTelemetry.Batch{System.Diagnostics.Activity})~System.Byte[]")]
 
 // TODO, review these suppressions.

src/AWS.Distro.OpenTelemetry.AutoInstrumentation/OtlpAwsSpanExporter/IAwsAuthenticator.cs

@@ -0,0 +1,45 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+using Amazon.Runtime;
+using Amazon.Runtime.Internal;
+using Amazon.Runtime.Internal.Auth;
+
+/// <summary>
+/// Provides AWS authentication and signing capabilities for AWS service requests.
+/// </summary>
+public interface IAwsAuthenticator
+{
+    /// <summary>
+    /// Asynchronously retrieves AWS credentials that can be used to authenticate requests.
+    /// </summary>
+    /// <returns>
+    /// A Task that resolves to an ImmutableCredentials object containing AWS access credentials.
+    /// The credentials include access key, secret key, and optional session token.
+    /// </returns>
+    Task<ImmutableCredentials> GetCredentialsAsync();
+
+    /// <summary>
+    /// Signs an AWS request using AWS Signature Version 4.
+    /// </summary>
+    void Sign(IRequest request, IClientConfig config, ImmutableCredentials credentials);
+}
+
+/// <summary>
+/// Default implementation of IAwsAuthenticator that uses AWS SDK's built-in credential
+/// and signing mechanisms.
+/// </summary>
+public class DefaultAwsAuthenticator : IAwsAuthenticator
+{
+    /// <inheritdoc/>
+    public async Task<ImmutableCredentials> GetCredentialsAsync()
+    {
+        return await FallbackCredentialsFactory.GetCredentials().GetCredentialsAsync();
+    }
+
+    /// <inheritdoc/>
+    public void Sign(IRequest request, IClientConfig config, ImmutableCredentials credentials)
+    {
+        new AWS4Signer().Sign(request, config, null, credentials);
+    }
+}