[Continuous Profiler] prepare test infrastructure for .NET Fx

test/IntegrationTests/ConsoleProfileExporterHelpers.cs

@@ -1,7 +1,6 @@
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
 
-#if NET
 using System.Text.Json;
 
 namespace IntegrationTests;
@@ -11,8 +10,8 @@ internal static class ConsoleProfileExporterHelpers
     public static List<ConsoleThreadSample> ExtractSamples(string output)
     {
         var batchSeparator = $"{Environment.NewLine}{Environment.NewLine}";
-        var lines = output.Split(batchSeparator);
-        var deserializedSampleBatches = lines[..^1].Select(sample => JsonSerializer.Deserialize<List<ConsoleThreadSample>>(sample)).ToList();
+        var lines = output.Split([batchSeparator], StringSplitOptions.None);
+        var deserializedSampleBatches = lines.Take(lines.Length - 1).Select(sample => JsonSerializer.Deserialize<List<ConsoleThreadSample>>(sample)).ToList();
 
         var threadSamples = new List<ConsoleThreadSample>();
         foreach (var batch in deserializedSampleBatches)
@@ -23,5 +22,3 @@ public static List<ConsoleThreadSample> ExtractSamples(string output)
         return threadSamples;
     }
 }
-
-#endif

test/IntegrationTests/ConsoleThreadSample.cs

@@ -1,7 +1,6 @@
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
 
-#if NET
 namespace IntegrationTests;
 
 internal class ConsoleThreadSample
@@ -16,11 +15,5 @@ internal class ConsoleThreadSample
 
     public string? ThreadName { get; set; }
 
-    public uint ThreadIndex { get; set; }
-
     public bool SelectedForFrequentSampling { get; set; }
-
-    public IList<string> Frames { get; set; } = new List<string>();
 }
-
-#endif

test/IntegrationTests/Helpers/MockProfilesCollector.cs

@@ -1,15 +1,18 @@
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
 
-#if NET
-
 using System.Collections.Concurrent;
 using System.Text;
-using Microsoft.AspNetCore.Http;
 using OpenTelemetry.Proto.Collector.Profiles.V1Development;
 using OpenTelemetry.Proto.Profiles.V1Development;
 using Xunit.Abstractions;
 
+#if NETFRAMEWORK
+using System.Net;
+#else
+using Microsoft.AspNetCore.Http;
+#endif
+
 namespace IntegrationTests.Helpers;
 
 public class MockProfilesCollector : IDisposable
@@ -21,10 +24,14 @@ public class MockProfilesCollector : IDisposable
     private readonly BlockingCollection<Collected> _profilesSnapshots = new(10); // bounded to avoid memory leak; contains protobuf type
     private CollectedExpectation? _collectedExpectation;
 
-    public MockProfilesCollector(ITestOutputHelper output)
+    public MockProfilesCollector(ITestOutputHelper output, string host = "localhost")
     {
         _output = output;
+#if NETFRAMEWORK
+        _listener = new(output, HandleHttpRequests, host, "/v1/metrics/");
+#else
         _listener = new(output, nameof(MockProfilesCollector), new PathHandler(HandleHttpRequests, "/v1development/profiles"));
+#endif
     }
 
     /// <summary>
@@ -167,6 +174,15 @@ private static void FailCollectedExpectation(string? collectedExpectationDescrip
         Assert.Fail(message.ToString());
     }
 
+#if NETFRAMEWORK
+    private void HandleHttpRequests(HttpListenerContext ctx)
+    {
+        var metricsMessage = ExportProfilesServiceRequest.Parser.ParseFrom(ctx.Request.InputStream);
+        HandleProfilesMessage(metricsMessage);
+
+        ctx.GenerateEmptyProtobufResponse<ExportProfilesServiceResponse>();
+    }
+#else
     private async Task HandleHttpRequests(HttpContext ctx)
     {
         using var bodyStream = await ctx.ReadBodyToMemoryAsync();
@@ -175,6 +191,7 @@ private async Task HandleHttpRequests(HttpContext ctx)
 
         await ctx.GenerateEmptyProtobufResponseAsync<ExportProfilesServiceResponse>();
     }
+#endif
 
     private void HandleProfilesMessage(ExportProfilesServiceRequest profileMessage)
     {
@@ -233,5 +250,3 @@ public CollectedExpectation(Func<ICollection<ExportProfilesServiceRequest>, bool
         public string? Description { get; }
     }
 }
-
-#endif

test/IntegrationTests/Helpers/TestHelper.cs

@@ -86,12 +86,10 @@ public void SetFileBasedExporter(MockLogsCollector collector)
         SetEnvironmentVariable("OTEL_EXPORTER_OTLP_LOGS_ENDPOINT", $"http://localhost:{collector.Port}/v1/logs");
     }
 
-#if NET
     public void SetExporter(MockProfilesCollector collector)
     {
         SetEnvironmentVariable("OTEL_EXPORTER_OTLP_ENDPOINT", $"http://localhost:{collector.Port}");
     }
-#endif
 
     public void EnableBytecodeInstrumentation()
     {

test/test-applications/integrations/TestApplication.ContinuousProfiler.ContextTracking/TestApplication.ContinuousProfiler.ContextTracking.csproj

@@ -2,7 +2,6 @@
 
     <PropertyGroup>
       <OutputType>Exe</OutputType>
-      <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
       <!-- SA1518 needed for files generated by Grpc.Tools -->
       <NoWarn>SA1518;$(NoWarn)</NoWarn>
     </PropertyGroup>

test/test-applications/integrations/TestApplication.ContinuousProfiler/ClassA.cs

@@ -30,7 +30,7 @@ public static void MethodA()
 
         for (var i = 0; i < numberOfItems; i++)
         {
-            TextWriter.Null.Write(items[i][^2]);
+            TextWriter.Null.Write(items[i][items[i].Length - 2]);
         }
     }
 
@@ -48,8 +48,13 @@ public static void MethodABytes(
             int.MaxValue,
             ulong.MaxValue,
             long.MaxValue,
+#if NET
             nint.MaxValue,
             nuint.MaxValue);
+#else
+            0x7fffffff,
+            0xffffffff);
+#endif
     }
 
     [MethodImpl(MethodImplOptions.NoInlining)]
@@ -105,7 +110,11 @@ public static void MethodAOthers<T>(
         static void Action(int s) => InternalClassB<string, int>.DoubleInternalClassB.TripleInternalClassB<int>.MethodB(s, [3], TimeSpan.Zero, 0, ["a"], []);
     }
 
+#if NET
     [DllImport("TestApplication.ContinuousProfiler.NativeDep")]
+#else
+    [DllImport("TestApplication.ContinuousProfiler.NativeDep.dll")]
+#endif
     private static extern int OTelAutoCallbackTest(Callback fp, int n);
 
     internal static class InternalClassB<TA, TD>

test/test-applications/integrations/TestApplication.ContinuousProfiler/Exporter/OtlpOverHttpExporter.cs

@@ -27,7 +27,11 @@ public class OtlpOverHttpExporter
     public OtlpOverHttpExporter(TimeSpan cpuPeriod, SampleNativeFormatParser parser)
     {
         _parser = parser;
+#if NET
         this.cpuPeriod = (long)cpuPeriod.TotalNanoseconds;
+#else
+        this.cpuPeriod = cpuPeriod.Ticks * 100L; // convert to nanoseconds
+#endif
     }
 
     public void ExportThreadSamples(byte[] buffer, int read, CancellationToken cancellationToken)
@@ -148,7 +152,7 @@ private static SampleBuilder CreateSampleBuilder(ThreadSample threadSample, Exte
 
         if (!string.IsNullOrEmpty(threadSample.ThreadName))
         {
-            extendedPprofBuilder.AddAttribute(sampleBuilder, "thread.name", threadSample.ThreadName);
+            extendedPprofBuilder.AddAttribute(sampleBuilder, "thread.name", threadSample.ThreadName!);
         }
 
         return sampleBuilder;
@@ -255,7 +259,11 @@ private static ScopeProfiles CreateScopeProfiles()
 
     private HttpResponseMessage SendHttpRequest(HttpRequestMessage request, CancellationToken cancellationToken)
     {
+#if NET
         return _httpClient.Send(request, cancellationToken);
+#else
+        return _httpClient.SendAsync(request, cancellationToken).GetAwaiter().GetResult();
+#endif
     }
 
     private HttpContent CreateHttpContent(ExportProfilesServiceRequest exportRequest)
@@ -290,10 +298,12 @@ public ExportRequestContent(ExportProfilesServiceRequest exportRequest)
             Headers.ContentType = ProtobufMediaTypeHeader;
         }
 
+#if NET
         protected override void SerializeToStream(Stream stream, TransportContext? context, CancellationToken cancellationToken)
         {
             SerializeToStreamInternal(stream);
         }
+#endif
 
         protected override Task SerializeToStreamAsync(Stream stream, TransportContext? context)
         {

test/test-applications/integrations/TestApplication.ContinuousProfiler/TestApplication.ContinuousProfiler.csproj

@@ -2,7 +2,6 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <!-- SA1518 needed for files generated by Grpc.Tools -->
     <NoWarn>SA1518;$(NoWarn)</NoWarn>

test/test-applications/integrations/dependency-libs/TestApplication.ContinuousProfiler.Fs/TestApplication.ContinuousProfiler.Fs.fsproj

@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
+    <TargetFrameworks Condition="'$(OS)' == 'Windows_NT'">$(TargetFrameworks);netstandard2.0</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>

test/test-applications/integrations/dependency-libs/TestApplication.ContinuousProfiler.Vb/TestApplication.ContinuousProfiler.Vb.vbproj

@@ -3,6 +3,7 @@
   <PropertyGroup>
     <RootNamespace>TestApplication.ContinuousProfiler.Vb</RootNamespace>
     <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
+    <TargetFrameworks Condition="'$(OS)' == 'Windows_NT'">$(TargetFrameworks);net462</TargetFrameworks>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>