Simplify GitHub workflows, and add action to suggest changes instead of requiring manual updates

.github/workflows/verify_source_generated_changes_are_persisted.yml

@@ -1,4 +1,4 @@
-name: Verify source generator changes have been persisted
+name: Verify generated changes have been persisted
 
 on:
   pull_request:
@@ -9,6 +9,7 @@ jobs:
     runs-on: windows-latest
     permissions:
       contents: read
+      pull-requests: write # create review comments with suggest-changes
 
     steps:
       - name: Support longpaths
@@ -21,10 +22,19 @@ jobs:
         with:
           dotnet-version: '9.0.102'
 
-      - name: "Regenerating package versions"
-        run: .\tracer\build.ps1 Restore CompileManagedSrc
+      - name: "Removing existing Datadog.Trace.Trimming.xml"
+        run: Get-ChildItem –Path ".\tracer\src\Datadog.Trace.Trimming\build\Datadog.Trace.Trimming.xml" -Recurse -File | Remove-Item
 
-      - name: "Verify no changes in generated files"
+      - name: "Regenerating Datadog.Trace.Trimming.xml"
+        run: .\tracer\build.ps1 Restore CompileManagedSrc CompileManagedLoader CreateTrimmingFile
+
+      - name: "Regenerating Solutions"
+        run: .\tracer\build.ps1 RegenerateSolutions
+
+      - name: "Regenerate docs/span_metadata.md"
+        run: .\tracer\build.ps1 GenerateSpanDocumentation
+
+      - name: "Verify no changes in source generator files"
         run: |
           git diff --quiet -- .\tracer\src\Datadog.Trace\Generated .\tracer\src\Datadog.Tracer.Native\Generated .\tracer\build\supported_calltargets.g.json
           if ($LASTEXITCODE -eq 1) {
@@ -34,3 +44,47 @@ jobs:
           } else {
             echo "No changes found to generated files"
           }
+
+      - name: "Verify no changes in Datadog.Trace.Trimming.xml"
+        if: ${{ !cancelled() }} # make sure this runs even if the previous step failed
+        run: |
+          git diff --quiet -- .\tracer\src\Datadog.Trace.Trimming\build
+          if ($LASTEXITCODE -eq 1) {
+            git diff -- .\tracer\src\Datadog.Trace.Trimming\build
+            Write-Error "Found changes in Datadog.Trace.Trimming.xml. Build the solution locally and ensure you have committed the Datadog.Trace.Trimming.xml changes, or accept the suggestions from the bot."
+            Exit 1
+          } else {
+            echo "No changes found to generated files"
+          }
+
+      - name: "Verify no changes in generated solutions"
+        if: ${{ !cancelled() }} # make sure this runs even if a previous step failed
+        run: |
+          git diff --quiet -- *.g.sln
+          if ($LASTEXITCODE -eq 1) {
+            git diff -- *.g.sln
+            Write-Error "Found changes in generated solutions. Did you add a new sample? Regenerate the build solution locally by running the target 'RegenerateSolutions', and ensure the changed files are committed to git."
+            Exit 1
+          } else {
+            echo "No changes found to generated files"
+          }
+
+      - name: "Verify no changes in docs/span_metadata.md"
+        if: ${{ !cancelled() }} # make sure this runs even if a previous step failed
+        run: |
+          git diff --quiet -- .\docs\span_metadata.md
+          if ($LASTEXITCODE -eq 1) {
+            git diff -- .\docs\span_metadata.md
+            Write-Error "Found changes in docs/span_metadata.md file. Run build task GenerateSpanDocumentation to regenerate the file with the latest C# rules."
+            Exit 1
+          } else {
+            echo "No changes found to docs/span_metadata.md file"
+          }
+
+      - uses: parkerbxyz/suggest-changes@459712ee6d904111222530ad28ff6cd8a4218e56 #v2.0.0
+        if: ${{ failure() }} # only post a comment with suggestions if we found any changes
+        with:
+          comment: 'Please commit the suggested auto-generated changes'
+          event: 'REQUEST_CHANGES'
+        env:
+          ACTIONS_STEP_DEBUG: true

tracer/src/Datadog.Trace/Tracer.cs

@@ -290,6 +290,17 @@ internal static void UnsafeSetTracerInstance(Tracer instance)
             instance?.TracerManager.Start();
         }
 
+#if NETCOREAPP3_1_OR_GREATER
+        /// <summary>
+        /// TEMP for testing trimming
+        /// </summary>
+        public void Testing()
+        {
+            var x = new Microsoft.AspNetCore.Http.CookieBuilder();
+            x.Name = "test";
+        }
+#endif
+
         /// <summary>
         /// This creates a new span with the given parameters and makes it active.
         /// </summary>