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Contributing to opentelemetry-dotnet-contrib

The OpenTelemetry .NET special interest group (SIG) meets regularly. See the OpenTelemetry community repo for information on this and other language SIGs.

See the public meeting notes for a summary description of past meetings. To request edit access, join the meeting or get in touch on Slack.

Find a Buddy and Get Started Quickly

If you are looking for someone to help you find a starting point and be a resource for your first contribution, join our Slack channel and find a buddy!

  1. Create your CNCF Slack account and join the otel-dotnet channel.
  2. Post in the room with an introduction to yourself, what area you are interested in (check issues marked with help wanted), and say you are looking for a buddy. We will match you with someone who has experience in that area.

Your OpenTelemetry buddy is your resource to talk to directly on all aspects of contributing to OpenTelemetry: providing context, reviewing PRs, and helping those get merged. Buddies will not be available 24/7, but is committed to responding during their normal contribution hours.

Development Environment

You can contribute to this project from a Windows, macOS or Linux machine.

On all platforms, the minimum requirements are:

  • Git client and command line tools.
  • .NET 6.0+

Please note that individual project requirements might vary.

Linux or MacOS

  • Visual Studio for Mac or Visual Studio Code

Mono might be required by your IDE but is not required by this project. This is because unit tests targeting .NET Framework (net452, net46, net461 etc.) are disabled outside of Windows.

Windows

  • Visual Studio 2022+ or Visual Studio Code
  • .NET Framework 4.6.1+

Pull Requests

How to Send Pull Requests

Everyone is welcome to contribute code to opentelemetry-dotnet-contrib via GitHub pull requests (PRs).

To create a new PR, fork the project in GitHub and clone the upstream repo:

git clone https://github.com/open-telemetry/opentelemetry-dotnet-contrib.git

Navigate to the repo root:

cd opentelemetry-dotnet-contrib

Add your fork as an origin:

git remote add fork https://github.com/YOUR_GITHUB_USERNAME/opentelemetry-dotnet-contrib.git

Run build:

dotnet build

Run tests:

dotnet test --no-build

If you made changes to the Markdown documents (*.md files), install the latest markdownlint-cli and run:

markdownlint .

Check out a new branch, make modifications and push the branch to your fork:

$ git checkout -b feature
# edit files
$ git commit
$ git push fork feature

Open a pull request against the main opentelemetry-dotnet-contrib repo.

How to Receive Comments

  • If the PR is not ready for review, please mark it as draft.
  • Make sure CLA is signed and CI is clear.
  • Submit small, focused PRs addressing a single concern/issue.
  • Make sure the PR title reflects the contribution.
  • Write a summary that helps understand the change.
  • Include usage examples in the summary, where applicable.

How to Get PRs Merged

A PR is considered to be ready to merge when:

  • It has received an approval either from one of the Approvers / Maintainers or the respective component owner.
  • Major feedbacks are resolved.
  • It has been open for review for at least one working day. This gives people reasonable time to review.
  • Trivial change (typo, cosmetic, doc, etc.) doesn't have to wait for one day.
  • Urgent fix can take exception as long as it has been actively communicated.

Any Maintainer can merge the PR once it is ready to merge. Note, that some PR may not be merged immediately if repo is being in process of a major release and the new feature doesn't fit it.

How to request for release of package

  • Submit a PR with CHANGELOG.md file reflecting the version to be released along with the date in the following format yyyy-MMM-dd.

For example:

## 1.2.0-beta.2

Released 2022-Jun-21
  • Tag the maintainers of this repository (@open-telemetry/dotnet-contrib-maintainers) who can release the package.

Style Guide

This project includes a .editorconfig file which is supported by all the IDEs/editor mentioned above. It works with the IDE/editor only and does not affect the actual build of the project.

This repository also includes stylecop ruleset files. These files are used to configure the StyleCop.Analyzers which runs during build. Breaking the rules will result in a build failure.

Contributing a new project

This repo is a great place to contribute a new instrumentation, exporter or any kind of extension. Please refer to this page for help writing your component. Although the projects within this repo share some properties and configurations, they are built and released independently. So if you are creating a new project within /src and corresponding test project within /test, here are a few things you should do to ensure that your project is automatically built and shipped through CI.

  • Based on what your project is, you may need to depend on the OpenTelemetry SDK or the OpenTelemetry API Include the necessary package in your project. You can choose the version that you want to depend on. Usually it is a good idea to use the latest version. Example:

    <ItemGroup>
  <PackageReference Include="OpenTelemetry" Version="$(OpenTelemetryCoreLatestVersion)" />
</ItemGroup>

  • The assembly and nuget versioning is managed through MinVer for all the projects in the repo. MinVer will assign the version to your project based on the tag prefix specified by you. To ensure your project is versioned appropriately, specify a <MinVerTagPrefix> property in your project file. If your project is named as "OpenTelemetry.Instrumentation.FooBar", the MinVerTagPrefix must be "Instrumentation.FooBar-". Example:

    <PropertyGroup>
  <MinVerTagPrefix>Instrumentation.FooBar-</MinVerTagPrefix>
</PropertyGroup>

  • Public API of all packages is analyzed by Microsoft.CodeAnalysis.PublicApiAnalyzers. This analyzer requires files structure to store the information about public API. Create PublicAPI.Shipped.txt and PublicAPI.Unshipped.txt for each TargetFramework defined in csproj under {ProjectFolder}\.publicApi\{TargetFramework}.

  • To build and release your project as nuget, you must provide a GitHub workflow to be triggered when a tag with prefix "Instrumentation.FooBar-" is pushed to the main branch. The workflow file should be named as package-Instrumentation.FooBar.yml and to be placed in the .github/workflows/ folder.

    You can copy one of the existing workflow files and replace the workflow name with "Pack OpenTelemetry.Instrumentation.FooBar", tags with "Instrumentation.FooBar-*" and PROJECT with "OpenTelemetry.Instrumentation.FooBar".

  • Add an issue template in your PR. You can follow the existing issue templates, e.g. comp_extensions. The maintainer will help to create a new "comp:" label once the PR is merged.

  • Add a README file for your project describing how to install and use your package. Every project's README file needs to have a link to the Nuget package. You can use the below snippet for reference:

[![NuGet](https://img.shields.io/nuget/v/{your_package_name}.svg)](https://www.nuget.org/packages/{your_package_name})
[![NuGet](https://img.shields.io/nuget/dt/{your_package_name}.svg)](https://www.nuget.org/packages/{your_package_name})
  • When contributing a new project you are expected to assign either yourself or someone else who would take ownership for the component you are contributing. Please add the right owner for your project in the component_owners file.