Support .NET 10

martincostello · martincostello · commit 5426d0cf4c7f · 2025-06-20T07:57:12.000+01:00
Add support for building and testing with .NET 10, initially using .NET 10 preview 4.
diff --git a/.github/workflows/Component.BuildTest.yml b/.github/workflows/Component.BuildTest.yml
@@ -24,7 +24,7 @@ on:
         required: false
         type: string
       tfm-list:
-        default: '[ "net462", "net8.0", "net9.0" ]'
+        default: '[ "net462", "net8.0", "net9.0", "net10.0" ]'
         required: false
         type: string
 
@@ -42,7 +42,7 @@ jobs:
         - os: ubuntu-22.04-arm
           version: net462
         - os: ubuntu-22.04-arm
-          version: net8.0
+          version: net10.0
 
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -111,7 +111,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: [ net8.0, net9.0 ]
+        version: [ net8.0, net9.0, net10.0 ]
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Run OTLP Exporter docker compose
@@ -129,7 +129,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: [ net8.0, net9.0 ]
+        version: [ net8.0, net9.0, net10.0 ]
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Run W3C Trace Context docker compose
diff --git a/.github/workflows/concurrency-tests.yml b/.github/workflows/concurrency-tests.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: false  # ensures the entire test matrix is run, even if one permutation fails
       matrix:
         os: [ windows-latest, ubuntu-22.04 ]
-        version: [ net8.0 ]
+        version: [ net8.0, net10.0 ]
         project: [ OpenTelemetry.Tests, OpenTelemetry.Api.Tests ]
 
     runs-on: ${{ matrix.os }}
diff --git a/.github/workflows/verifyaotcompat.yml b/.github/workflows/verifyaotcompat.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: false # ensures the entire test matrix is run, even if one permutation fails
       matrix:
         os: [ ubuntu-22.04, windows-latest ]
-        version: [ net8.0, net9.0 ]
+        version: [ net8.0, net9.0, net10.0 ]
 
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/Directory.Packages.props b/Directory.Packages.props
@@ -9,7 +9,7 @@
         possible and only deviate (use a specific version) when a package has a
         more specific patch which must be reference directly.
     -->
-    <LatestRuntimeOutOfBandVer>9.0.0</LatestRuntimeOutOfBandVer>
+    <LatestRuntimeOutOfBandVer>10.0.0-preview.4.25258.110</LatestRuntimeOutOfBandVer>
 
     <!-- Mitigate https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43485. -->
     <SystemTextEncodingsWebOutOfBandMinimumCoreAppVer>8.0.0</SystemTextEncodingsWebOutOfBandMinimumCoreAppVer>
@@ -125,4 +125,8 @@
     <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="9.0.0" />
   </ItemGroup>
 
+  <ItemGroup Condition="'$(TargetFramework)' == 'net10.0'">
+    <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="10.0.0-preview.4.25258.110" />
+  </ItemGroup>
+
 </Project>
diff --git a/OpenTelemetry.sln b/OpenTelemetry.sln
@@ -33,6 +33,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "build", "build", "{7CB2F02E
 		build\docfx.cmd = build\docfx.cmd
 		build\docker-compose.net8.0.yml = build\docker-compose.net8.0.yml
 		build\docker-compose.net9.0.yml = build\docker-compose.net9.0.yml
+		build\docker-compose.net10.0.yml = build\docker-compose.net10.0.yml
 		build\GlobalAttrExclusions.txt = build\GlobalAttrExclusions.txt
 		build\opentelemetry-icon-color.png = build\opentelemetry-icon-color.png
 		build\OpenTelemetry.prod.loose.ruleset = build\OpenTelemetry.prod.loose.ruleset
diff --git a/build/Common.nonprod.props b/build/Common.nonprod.props
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <DefaultTargetFrameworkForExampleApps>net9.0</DefaultTargetFrameworkForExampleApps>
+    <DefaultTargetFrameworkForExampleApps>net10.0</DefaultTargetFrameworkForExampleApps>
   </PropertyGroup>
 
   <PropertyGroup Condition="$(MSBuildProjectName.EndsWith('.Tests'))">
diff --git a/build/Common.props b/build/Common.props
@@ -28,19 +28,19 @@
     <NetFrameworkSupportedVersions>net481;net48;net472;net471;net47;net462</NetFrameworkSupportedVersions>
 
     <!-- production TFMs -->
-    <TargetFrameworksForLibraries>net9.0;net8.0;netstandard2.0;$(NetFrameworkMinimumSupportedVersion)</TargetFrameworksForLibraries>
-    <TargetFrameworksForLibrariesExtended>net9.0;net8.0;netstandard2.1;netstandard2.0;$(NetFrameworkMinimumSupportedVersion)</TargetFrameworksForLibrariesExtended>
-    <TargetFrameworksForPrometheusAspNetCore>net9.0;net8.0</TargetFrameworksForPrometheusAspNetCore>
+    <TargetFrameworksForLibraries>net10.0;net9.0;net8.0;netstandard2.0;$(NetFrameworkMinimumSupportedVersion)</TargetFrameworksForLibraries>
+    <TargetFrameworksForLibrariesExtended>net10.0;net9.0;net8.0;netstandard2.1;netstandard2.0;$(NetFrameworkMinimumSupportedVersion)</TargetFrameworksForLibrariesExtended>
+    <TargetFrameworksForPrometheusAspNetCore>net10.0;net9.0;net8.0</TargetFrameworksForPrometheusAspNetCore>
     <TargetFrameworksRequiringSystemTextJsonDirectReference>net8.0;netstandard2.1;netstandard2.0;$(NetFrameworkMinimumSupportedVersion)</TargetFrameworksRequiringSystemTextJsonDirectReference>
 
     <!-- non-production TFMs -->
-    <TargetFrameworksForAspNetCoreTests>net9.0;net8.0</TargetFrameworksForAspNetCoreTests>
-    <TargetFrameworksForAotCompatibilityTests>net9.0;net8.0</TargetFrameworksForAotCompatibilityTests>
-    <TargetFrameworksForDocs>net9.0;net8.0</TargetFrameworksForDocs>
+    <TargetFrameworksForAspNetCoreTests>net10.0;net9.0;net8.0</TargetFrameworksForAspNetCoreTests>
+    <TargetFrameworksForAotCompatibilityTests>net10.0;net9.0;net8.0</TargetFrameworksForAotCompatibilityTests>
+    <TargetFrameworksForDocs>net10.0;net9.0;net8.0</TargetFrameworksForDocs>
     <TargetFrameworksForDocs Condition="$(OS) == 'Windows_NT' And '$(UsingMicrosoftNETSdkWeb)' != 'True'">
       $(TargetFrameworksForDocs);$(NetFrameworkSupportedVersions)
     </TargetFrameworksForDocs>
-    <TargetFrameworksForTests>net9.0;net8.0</TargetFrameworksForTests>
+    <TargetFrameworksForTests>net10.0;net9.0;net8.0</TargetFrameworksForTests>
     <TargetFrameworksForTests Condition="$(OS) == 'Windows_NT'">
       $(TargetFrameworksForTests);$(NetFrameworkMinimumSupportedVersion)
     </TargetFrameworksForTests>
diff --git a/build/docker-compose.net10.0.yml b/build/docker-compose.net10.0.yml
@@ -0,0 +1,9 @@
+version: '3.7'
+
+services:
+  tests:
+    build:
+      args:
+        PUBLISH_FRAMEWORK: net10.0
+        TEST_SDK_VERSION: "10.0"
+        BUILD_SDK_VERSION: "10.0"
diff --git a/examples/MicroserviceExample/WebApi/Dockerfile b/examples/MicroserviceExample/WebApi/Dockerfile
@@ -1,16 +1,18 @@
-ARG SDK_VERSION=9.0
+ARG SDK_VERSION=10.0
 FROM mcr.microsoft.com/dotnet/sdk:8.0.411@sha256:e6a5a8d884609907fa8d468b927df765967f6b22f890ce92bd3ae614ca4ae87e AS dotnet-sdk-8.0
 FROM mcr.microsoft.com/dotnet/sdk:9.0.300@sha256:c5b188baf837b0180a14f988815b9cc7a55b836dd6cbe1b6e6523cf3098faaa8 AS dotnet-sdk-9.0
+FROM mcr.microsoft.com/dotnet/sdk:10.0.100-preview.4@sha256:0c90f5c8dfb1d4a666116cf27ea75bb081e800c6f6228a5c4a33ff32d727e254 AS dotnet-sdk-10.0
 
 FROM dotnet-sdk-${SDK_VERSION} AS build
 ARG PUBLISH_CONFIGURATION=Release
-ARG PUBLISH_FRAMEWORK=net9.0
+ARG PUBLISH_FRAMEWORK=net10.0
 WORKDIR /app
 COPY . ./
 RUN dotnet publish ./examples/MicroserviceExample/WebApi -c "${PUBLISH_CONFIGURATION}" -f "${PUBLISH_FRAMEWORK}" -o /out -p:IntegrationBuild=true
 
 FROM mcr.microsoft.com/dotnet/aspnet:8.0.17@sha256:d5c0d91bc8fe887684b97d5409056270ed78cd23a5123436e842a8114a64d584 AS dotnet-aspnet-8.0
 FROM mcr.microsoft.com/dotnet/aspnet:9.0.5@sha256:d5507d8292fb2469ec0b9913f3cd4bb8d5a014bd6dc00c33fd4c4e7310229f07 AS dotnet-aspnet-9.0
+FROM mcr.microsoft.com/dotnet/aspnet:10.0.0-preview.4@sha256:898d64af8cb7d440f82432a42dfcdf7d6e87feccc4225c46736cbc3976cb9303 AS dotnet-aspnet-10.0
 
 FROM dotnet-aspnet-${SDK_VERSION} AS runtime
 WORKDIR /app
diff --git a/examples/MicroserviceExample/WorkerService/Dockerfile b/examples/MicroserviceExample/WorkerService/Dockerfile
@@ -1,17 +1,19 @@
-ARG SDK_VERSION=9.0
+ARG SDK_VERSION=10.0
 
 FROM mcr.microsoft.com/dotnet/sdk:8.0.411@sha256:e6a5a8d884609907fa8d468b927df765967f6b22f890ce92bd3ae614ca4ae87e AS dotnet-sdk-8.0
 FROM mcr.microsoft.com/dotnet/sdk:9.0.300@sha256:c5b188baf837b0180a14f988815b9cc7a55b836dd6cbe1b6e6523cf3098faaa8 AS dotnet-sdk-9.0
+FROM mcr.microsoft.com/dotnet/sdk:10.0.100-preview.4@sha256:0c90f5c8dfb1d4a666116cf27ea75bb081e800c6f6228a5c4a33ff32d727e254 AS dotnet-sdk-10.0
 
 FROM dotnet-sdk-${SDK_VERSION} AS build
 ARG PUBLISH_CONFIGURATION=Release
-ARG PUBLISH_FRAMEWORK=net9.0
+ARG PUBLISH_FRAMEWORK=net10.0
 WORKDIR /app
 COPY . ./
 RUN dotnet publish ./examples/MicroserviceExample/WorkerService -c "${PUBLISH_CONFIGURATION}" -f "${PUBLISH_FRAMEWORK}" -o /out -p:IntegrationBuild=true
 
 FROM mcr.microsoft.com/dotnet/aspnet:8.0.17@sha256:d5c0d91bc8fe887684b97d5409056270ed78cd23a5123436e842a8114a64d584 AS dotnet-aspnet-8.0
 FROM mcr.microsoft.com/dotnet/aspnet:9.0.5@sha256:d5507d8292fb2469ec0b9913f3cd4bb8d5a014bd6dc00c33fd4c4e7310229f07 AS dotnet-aspnet-9.0
+FROM mcr.microsoft.com/dotnet/aspnet:10.0.0-preview.4@sha256:898d64af8cb7d440f82432a42dfcdf7d6e87feccc4225c46736cbc3976cb9303 AS dotnet-aspnet-10.0
 
 FROM dotnet-aspnet-${SDK_VERSION} AS runtime
 WORKDIR /app
diff --git a/global.json b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
     "rollForward": "latestFeature",
-    "version": "9.0.300"
+    "version": "10.0.100-preview.4.25258.110"
   }
 }
diff --git a/src/OpenTelemetry.Api/OpenTelemetry.Api.csproj b/src/OpenTelemetry.Api/OpenTelemetry.Api.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Diagnostics.DiagnosticSource" />
+    <PackageReference Include="System.Diagnostics.DiagnosticSource" Condition="!$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net10.0'))" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/test/Directory.Build.targets b/test/Directory.Build.targets
@@ -9,7 +9,7 @@
     reference is needed to mitigate:
     https://github.com/advisories/GHSA-hh2w-p6rv-4g7w. Remove this if Coyote
     publishes a fixed version. -->
-    <PackageReference Include="System.Text.Json" VersionOverride="$(SystemTextJsonOutOfBandMinimumCoreAppVer)" />
+    <PackageReference Include="System.Text.Json" VersionOverride="$(SystemTextJsonOutOfBandMinimumCoreAppVer)" Condition="$(TargetFrameworksRequiringSystemTextJsonDirectReference.Contains('$(TargetFramework)'))" />
   </ItemGroup>
 
 </Project>
diff --git a/test/OpenTelemetry.Exporter.OpenTelemetryProtocol.Tests/IntegrationTest/Dockerfile b/test/OpenTelemetry.Exporter.OpenTelemetryProtocol.Tests/IntegrationTest/Dockerfile
@@ -2,14 +2,15 @@
 # This should be run from the root of the repo:
 # docker build --file test/OpenTelemetry.Exporter.OpenTelemetryProtocol.Tests/IntegrationTest/Dockerfile
 
-ARG BUILD_SDK_VERSION=9.0
-ARG TEST_SDK_VERSION=9.0
+ARG BUILD_SDK_VERSION=10.0
+ARG TEST_SDK_VERSION=10.0
 FROM mcr.microsoft.com/dotnet/sdk:8.0.411@sha256:e6a5a8d884609907fa8d468b927df765967f6b22f890ce92bd3ae614ca4ae87e AS dotnet-sdk-8.0
 FROM mcr.microsoft.com/dotnet/sdk:9.0.300@sha256:c5b188baf837b0180a14f988815b9cc7a55b836dd6cbe1b6e6523cf3098faaa8 AS dotnet-sdk-9.0
+FROM mcr.microsoft.com/dotnet/sdk:10.0.100-preview.4@sha256:0c90f5c8dfb1d4a666116cf27ea75bb081e800c6f6228a5c4a33ff32d727e254 AS dotnet-sdk-10.0
 
 FROM dotnet-sdk-${BUILD_SDK_VERSION} AS build
 ARG PUBLISH_CONFIGURATION=Release
-ARG PUBLISH_FRAMEWORK=net9.0
+ARG PUBLISH_FRAMEWORK=net10.0
 WORKDIR /repo
 COPY . ./
 WORKDIR "/repo/test/OpenTelemetry.Exporter.OpenTelemetryProtocol.Tests"
diff --git a/test/OpenTelemetry.Instrumentation.W3cTraceContext.Tests/Dockerfile b/test/OpenTelemetry.Instrumentation.W3cTraceContext.Tests/Dockerfile
@@ -2,8 +2,8 @@
 # This should be run from the root of the repo:
 # docker build --file test/OpenTelemetry.Instrumentation.W3cTraceContext.Tests/Dockerfile .
 
-ARG BUILD_SDK_VERSION=9.0
-ARG TEST_SDK_VERSION=9.0
+ARG BUILD_SDK_VERSION=10.0
+ARG TEST_SDK_VERSION=10.0
 
 FROM ubuntu:24.04@sha256:b59d21599a2b151e23eea5f6602f4af4d7d31c4e236d22bf0b62b86d2e386b8f AS w3c
 #Install git
@@ -13,10 +13,11 @@ RUN git clone --branch level-1 https://github.com/w3c/trace-context.git
 
 FROM mcr.microsoft.com/dotnet/sdk:8.0.411@sha256:e6a5a8d884609907fa8d468b927df765967f6b22f890ce92bd3ae614ca4ae87e AS dotnet-sdk-8.0
 FROM mcr.microsoft.com/dotnet/sdk:9.0.300@sha256:c5b188baf837b0180a14f988815b9cc7a55b836dd6cbe1b6e6523cf3098faaa8 AS dotnet-sdk-9.0
+FROM mcr.microsoft.com/dotnet/sdk:10.0.100-preview.4@sha256:0c90f5c8dfb1d4a666116cf27ea75bb081e800c6f6228a5c4a33ff32d727e254 AS dotnet-sdk-10.0
 
 FROM dotnet-sdk-${BUILD_SDK_VERSION} AS build
 ARG PUBLISH_CONFIGURATION=Release
-ARG PUBLISH_FRAMEWORK=net9.0
+ARG PUBLISH_FRAMEWORK=net10.0
 WORKDIR /repo
 COPY . ./
 WORKDIR "/repo/test/OpenTelemetry.Instrumentation.W3cTraceContext.Tests"
