Add AmbientMetadata.Build component

[evgenyfedorov2]

Adding a brand new component - Build metadata, which automatically grabs build information from the CI/CD pipelines, deserializes it into a strong type BuildMetadata and registers it in Dependency Injection container as IOptions<BuildMetadata>.
The component uses source generation to collect build information and immediately express it via C# code.

Initially, only GitHub Actions and Azure DevOps are supported

Microsoft Reviewers: Open in CodeFlow

[dariusclay]

I love porting until I realize my commit history is lost. 🤣

[KalleOlaviNiemitalo]

What's the purpose of the empty src/Libraries/Microsoft.Extensions.AmbientMetadata.Build/Microsoft.Extensions.AmbientMetadata.Build.json file?

[evgenyfedorov2]

What's the purpose of the empty src/Libraries/Microsoft.Extensions.AmbientMetadata.Build/Microsoft.Extensions.AmbientMetadata.Build.json file?

Removed :)

[Copilot]

Pull Request Overview

This PR introduces a new AmbientMetadata.Build component that provides automatic build metadata collection from CI/CD pipelines. The component uses source generation to extract build information at compile time and register it in the dependency injection container as IOptions.

Key changes:

• New BuildMetadata class with properties for build ID, number, branch name, and source version
• Source generator that reads MSBuild properties and generates configuration extensions
• Support for both Azure DevOps and GitHub Actions CI environments

Reviewed Changes

Copilot reviewed 20 out of 24 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/Libraries/Microsoft.Extensions.AmbientMetadata.Build/BuildMetadata.cs	Defines the core data model for build metadata
src/Generators/Microsoft.Gen.BuildMetadata/BuildMetadataGenerator.cs	Main source generator that creates build metadata extensions
src/Libraries/Microsoft.Extensions.AmbientMetadata.Build/BuildMetadataServiceCollectionExtensions.cs	Extension methods for registering BuildMetadata in DI container
src/Libraries/Microsoft.Extensions.AmbientMetadata.Build/buildTransitive/Microsoft.Extensions.AmbientMetadata.Build.props	MSBuild properties file that maps CI environment variables to build properties
test/Libraries/Microsoft.Extensions.AmbientMetadata.Build.Tests/	Unit tests for the build metadata functionality

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[Copilot]

Pull Request Overview

Copilot reviewed 20 out of 24 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 20 out of 24 changed files in this pull request and generated 3 comments.

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