[MSBUILD SDK] Collect extension files into .azurefunctions output folder #3277
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Pull request overview
This PR implements collection of extension bundle files from a generated project and copies them directly to the .azurefunctions output folder, eliminating the need to fully build the generated project. This optimization reduces redundant file copying and improves build performance.
Key changes:
- Added MSBuild targets to collect extension files and copy them to
.azurefunctionsfolder - Implemented filtering logic to exclude runtime assemblies/packages from the extensions payload
- Added comprehensive test coverage for extension file collection scenarios
Reviewed changes
Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
| test/Azure.Functions.Sdk.Tests/Integration/SdkEndToEndTests.Targets.WorkerConfig.cs | Removed extraneous blank line |
| test/Azure.Functions.Sdk.Tests/Integration/SdkEndToEndTests.Targets.GetFunctionsExtensionFiles.cs | Added tests for the GetFunctionsExtensionFiles target with and without package references |
| test/Azure.Functions.Sdk.Tests/Integration/SdkEndToEndTests.Build.cs | Added tests for building with extensions and validation of extensions payload |
| test/Azure.Functions.Sdk.Tests/Assertions/TaskItemAssertions.cs | Added HaveMetadataLike assertion method for pattern matching metadata values |
| src/Azure.Functions.Sdk/Tasks/Inner/ResolveExtensionCopyLocal.cs | Implemented task to resolve and filter extension assemblies for the payload |
| src/Azure.Functions.Sdk/TaskItemExtensions.cs | Added NuGetPackageId property and TryGetNuGetPackageId method |
| src/Azure.Functions.Sdk/Targets/Inner/Azure.Functions.Sdk.Inner.targets | Added ResolveFunctionsExtensionFiles target and ResolveExtensionCopyLocal task |
| src/Azure.Functions.Sdk/Targets/Inner/Azure.Functions.Sdk.Inner.props | Added import for runtime packages properties file |
| src/Azure.Functions.Sdk/Targets/Inner/Azure.Functions.Sdk.Inner.RuntimePackages.props | Defined runtime assemblies and packages to exclude from extensions payload |
| src/Azure.Functions.Sdk/Targets/Extensions/Azure.Functions.Sdk.Extensions.targets | Added targets to prepare and publish extension payload, and GetFunctionsExtensionFiles target |
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src/Azure.Functions.Sdk/Targets/Inner/Azure.Functions.Sdk.Inner.RuntimePackages.props
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…r.RuntimePackages.props Co-authored-by: Copilot <[email protected]>
….com/Azure/azure-functions-dotnet-worker into jviau/msbuild-sdk/collect-extensions
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satvu
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Dec 19, 2025
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Issue describing the changes in this PR
resolves #3134
Pull request checklist
release_notes.mdAdditional information
This PR adds msbuild targets to collect the extension bundle files from the generated project. A major difference from the current SDK is that we no longer fully build the generated project, we just collect extension files and then directly copy them to
.azurefunctionsoutput folder. This saves us many redundant files copying and cuts down on build time.