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Fuchsia contributor roles

Overview

This document defines the roles associated with contributing to the Fuchsia project.

Principles

Roles within the Fuchsia project seek to embody the following principles:

  • Transparency. We are transparent and open about roles and requirements.
  • Inclusivity. Fuchsia lets anyone contribute to the project, regardless of their employer.We believe contributions from a diverse, open-source community are critical to improving Fuchsia.
  • Responsibility. Roles and privileges can be revoked if a person no longer meets the requirements.

Roles

The following are the contributor roles associated with the Fuchsia project:

Member

Anyone who contributes to the project by providing patches to code or documentation, and agrees to the Google Developers' Contributor License Agreement.

Responsibilities

Members are responsible for acting in accordance with the Fuchsia Code of Conduct.

Become a Member

To become a Member you must do the following:

Committer

A Committer is a person who has write access to the Fuchsia repository. A Committer can submit their own Gerrit changes or Gerrit changes from any other member.

A Committer is not just someone who can make changes, but also someone who demonstrated the ability to collaborate effectively with other Members of the Fuchsia community. Example collaboration activities include but are not limited to:

  • Seeking out the most knowledgeable people to review their code changes.
  • Contributing high-quality, well-tested code.
  • Fixing bugs in code or tests.

Members can become Committers with different kinds of contributions. For instance, those working on documentation or toolchain can meet the requirements to become Committers by contributing high-quality documentation or configuration changes, which would not meet the “traditional” bar for well-tested code.

In order to submit Gerrit changes, Committers need to either be Owners of the affected files or receive approval from an Owner of the affected files.

Responsibilities

Committers are responsible for the following:

  • Ensuring that the code submitted to Fuchsia by Committers is tested according to the Testability Rubrics.
  • Ensuring that the code submitted to Fuchsia by Committers follows testing best practices.

Become a Committer

To become a Committer you must do the following:

  • Contribute 10 non-trivial patches to the project, demonstrating the ability to write high-quality, well-tested code.
  • Be nominated by a current Committer.
  • Obtain reviews and approvals of those 10 non-trivial patches from at least 2 different Committers.
  • Ensure that your nomination is supported by 3 other Committers.
  • Ensure that your nomination is not blocked by any Committer.

Committer nominations are evaluated within seven business days of the initial nomination request.

Owner

An Owner is responsible for files or directories within the Fuchsia project and has comprehensive knowledge of the code in that subtree. Owners are listed in OWNERS files. For directories or files that are outside of an Owner's responsibility, that Owner has the same privileges as a Committer.

Responsibilities

In addition to the responsibilities of a Committer and Member, Owners are responsible for the following:

  • Nominating other Owners.
  • Approving or removing other Owners.
  • Provide high-quality reviews and design feedback.
  • Approve changes for code in their subtree.

Become an Owner

To become an Owner you must do the following:

  • Be a Committer.
  • Submit a substantial number of non-trivial changes to the affected subtree.
  • Provide high-quality reviews and code design feedback.
  • Provide code reviews in a timely manner.
  • Self-nominate or be nominated by another Committer.
    • To self-nominate, submit a Gerrit change that adds yourself to the OWNERS file of your desired repository. Current Owners will evaluate your change and either accept or reject your request.

Global Approver

A Global Approver is an Owner in the root OWNERS file. A Global Approver often makes large-scale changes that affect the entire Fuchsia codebase. For example, Global Approvers are people who tend to maintain various languages, toolchains, and other build system components.

For the full set of Global Approver expectations as well as the list of current Global Approvers, see the root OWNERS file.

While Global Approvers are empowered to provide a Code-Review +2 to large-scale changes, Global Approvers are not expected to have comprehensive knowledge of the entire Fuchsia codebase.

Responsibilities

In addition to the responsibilities of a Member, Committer, and Owner, Global Approvers are responsible for the following:

  • Approving large scale changes within the Fuchsia codebase with a +2 in Gerrit.
  • Providing timely reviews for large scale changes.

Become a Global Approver

To become a Global Approver you must do the following:

  • Demonstrate considerable proficiency in making large-scale changes across the entire Fuchsia codebase.
  • Self-nominate or get nominated by another Committer.
    • To self-nominate, do the following:
      • Submit a Gerrit change that adds yourself to the root OWNERS file. Current Owners will evaluate your change and either accept or reject your request.
      • Email all existing Global Approvers with your associated Gerrit change and wait one business day for discussion and approval. If you are being nominated, existing Global Approvers will be emailed by the individual nominating you.

Code review actions

The types of code review actions you can provide depend on your role within the Fuchsia project.

Initiate a CQ Dry Run

A CQ Dry Run runs your change against the available tests in the Commit Queue. Committers, Owners, and Global Approvers can initiate a CQ Dry Run.

Score code reviews

Code Review

After you request a code review, reviewers can score your change.

Reviewers can label your change with a score of -2, -1, 0, +1, or +2. For more information on review label definitions, see Gerrit Code Review - Review Labels.

Committers, Owners, and Global Approvers can score code reviews but only a Global Approver or repository Owner can provide a +2.

Submit approved changes

You need a Code Review Label +2 to submit your change. A Code-Review Label +2 score can only be applied by a repository Owner or Global Approver.

When a change is submitted, the change is moved to the Commit Queue (CQ). The Commit Queue verifies, commits, and merges changes to the master branch.

Role matrix

This table summarizes the actions that each Fuchsia contributor role can perform.

Role Create Change Code-Review another Committer’s change Provide Code-Review +2 Provide CQ+1 (dry run of CQ) Submit Approved Change to CQ Add or remove Owners
Member Yes No No No No No
Committer Yes Yes No Yes Yes No
Owner (outside owned subtree) Yes Yes No Yes Yes No
Owner (in own subtree) Yes Yes Yes Yes Yes Yes
Global Approver Yes Yes Yes Yes Yes Yes

Life of a change

The following diagram depicts the high-level stages of what happens to a change after its pushed to Gerrit.

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Specialized roles

Areas within the Fuchsia repository may have their own unique requirements, defining their own sets of roles and responsibilities, in addition to the ones detailed above.

API Reviewer

An API Reviewer is accountable for the quality and long-term health of the Fuchsia API surface . API Reviewers collectively form the API Council.

Any change that modifies the Fuchsia API Surface must receive an API-Review+1. from a member of API Council in addition to the usual Code-Review+2.

For more details about the responsibilities of an API Reviewer and how the API Council operates, see the API Council Charter.

API Reviewer membership

To become an API Reviewer you must do the following:

  • Be a Committer.
  • Demonstrate good judgement about the quality and long-term health of APIs.
  • Be appointed by the functional area of the Fuchsia project, as per the API Council Charter.

Eng Council member

The Fuchsia Eng Council is a small group of senior technical leaders responsible for providing a coherent technical vision for Fuchsia. The Eng Council largely operates by delegation and ratification, communicating engineering standards, values, and objectives throughout the community and then reviewing and ratifying concrete engineering proposals from project contributors.

Eng Council membership

There is no predetermined number of people on the Eng Council. However, in order to provide a coherent technical vision, the council has a small number of members. Eng Council members are appointed by the governing authority for the project.

For more details about the responsibilities of an API Reviewer and how the API Council operates, see the Fuchsia Eng Council Charter.

Revoking Privileges

When contributors no longer meet requirements, their role and corresponding privileges can be revoked.

Scenarios

Example scenarios for having privileges revoked include, but are not limited to, the following:

  • Not acting in accordance with the Fuchsia Code of Conduct.
  • Committers repeatedly ignoring testability best-practices in their code reviews.
  • Owners discouraging people from requesting code reviews.
  • Owners being unresponsive to review requests.

Process

The process for revoking an individual’s role within the Fuchsia project involves the following steps:

  • An Owner makes a recommendation to community-managers@fuchsia.dev to revoke someone’s role, specifying the rationale. Revoking an Owner role needs to be approved by an Owner in the same subtree or above.
    • Ownership is often revoked when an Owner is no longer actively contributing to their associated files or directories.

Revoking a Committer role should be a rare action and requires approval by the governance authority. Community managers should be involved in the process of revoking the Committer role.

Frequently asked questions

As a Fuchsia Member, you might have the following questions about requesting a code review:

  • Who can provide a Code Review +1?
    • All Committers, Owners, and Global Approvers. Code Review +1 means “Looks Good To Me” but a +1 alone doesn’t allow for submission. Someone else has to approve the change with a +2. For more information on review label definitions see, Gerrit Code Review - Review Labels.
  • Can specific portions of the Fuchsia source code have different requirements?
  • Do I need API-Review +1?
    • Changes affecting the Fuchsia API surface require API-Review +1, and the code review tool will only show the API-Review flag when it is needed.