From 7dc6404726633474f8c8a03502a6a06250c9c916 Mon Sep 17 00:00:00 2001 From: Carl Lerche Date: Fri, 24 Aug 2018 13:03:34 -0700 Subject: draft initial CONTRIBUTING guide (#567) This guide was adopted from the node.js project. --- CONTRIBUTING.md | 288 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 CONTRIBUTING.md (limited to 'CONTRIBUTING.md') diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 00000000..ea59f75b --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,288 @@ +# Contributing to Tokio + +:balloon: Thanks for your help improving the project! We are so happy to have +you! + +There are opportunities to contribute to Tokio at any level. It doesn't matter if +you are just getting started with Rust or are the most weathered expert, we can +use your help. + +**No contribution is too small and all contributions are valued.** + +This guide will help you get started. **Do not let this guide intimidate you**. +It should be considered a map to help you navigate the process. + +You may also find get help contributing in the [dev channel][dev], please join +us! + +[dev]: https://gitter.im/tokio-rs/dev + +## Conduct + +The Tokio project adheres to the [Rust Code of Conduct][coc]. This describes +the _minimum_ behavior expected from all contributors. + +[coc]: https://github.com/rust-lang/rust/blob/master/CODE_OF_CONDUCT.md + +## Contributing in Issues + +For any issue, there are fundamentally three ways an individual can contribute: + +1. By opening the issue for discussion: For instance, if you believe that you + have uncovered a bug in Tokio, creating a new issue in the tokio-rs/tokio + issue tracker is the way to report it. + +2. By helping to triage the issue: This can be done by providing + supporting details (a test case that demonstrates a bug), providing + suggestions on how to address the issue, or ensuring that the issue is tagged + correctly. + +3. By helping to resolve the issue: Typically this is done either in the form of + demonstrating that the issue reported is not a problem after all, or more + often, by opening a Pull Request that changes some bit of something in + Tokio in a concrete and reviewable manner. + +**Anybody can participate in any stage of contribution**. We urge you to +participate in the discussion around bugs and participate in reviewing PRs. + +### Asking for General Help + +If you have reviewed existing documentation and still have questions or are +having problems, you can open an issue asking for help. + +In exchange for receiving help, we ask that you contribute back a documentation +PR that helps others avoid the problems that you encountered. + +### Submitting a Bug Report + +When opening a new issue in the Tokio issue tracker, users will be presented +with a [basic template][template] that should be filled in. If you believe that you have +uncovered a bug, please fill out this form, following the template to the best +of your ability. Do not worry if you cannot answer every detail, just fill in +what you can. + +The two most important pieces of information we need in order to properly +evaluate the report is a description of the behavior you are seeing and a simple +test case we can use to recreate the problem on our own. If we cannot recreate +the issue, it becomes impossible for us to fix. + +In order to rule out the possibility of bugs introduced by userland code, test +cases should be limited, as much as possible, to using only Tokio APIs. + +See [How to create a Minimal, Complete, and Verifiable example][mcve]. + +[mcve]: https://stackoverflow.com/help/mcve +[template]: .github/PULL_REQUEST_TEMPLATE.md + +### Triaging a Bug Report + +Once an issue has been opened, it is not uncommon for there to be discussion +around it. Some contributors may have differing opinions about the issue, +including whether the behavior being seen is a bug or a feature. This discussion +is part of the process and should be kept focused, helpful, and professional. + +Short, clipped responses—that provide neither additional context nor supporting +detail—are not helpful or professional. To many, such responses are simply +annoying and unfriendly. + +Contributors are encouraged to help one another make forward progress as much as +possible, empowering one another to solve issues collaboratively. If you choose +to comment on an issue that you feel either is not a problem that needs to be +fixed, or if you encounter information in an issue that you feel is incorrect, +explain why you feel that way with additional supporting context, and be willing +to be convinced that you may be wrong. By doing so, we can often reach the +correct outcome much faster. + +### Resolving a Bug Report + +In the majority of cases, issues are resolved by opening a Pull Request. The +process for opening and reviewing a Pull Request is similar to that of opening +and triaging issues, but carries with it a necessary review and approval +workflow that ensures that the proposed changes meet the minimal quality and +functional guidelines of the Tokio project. + +## Pull Requests + +Pull Requests are the way concrete changes are made to the code, documentation, +and dependencies in the Tokio repository. + +Even tiny pull requests (e.g., one character pull request fixing a typo in API +documentation) are greatly appreciated. Before making a large change, it is +usually a good idea to first open an issue describing the change to solicit +feedback and guidance. This will increasethe likelihood of the PR getting +merged. + +### Commits + +It is a recommended best practice to keep your changes as logically grouped as +possible within individual commits. There is no limit to the number of commits +any single Pull Request may have, and many contributors find it easier to review +changes that are split across multiple commits. + +That said, if you have a number of commits that are "checkpoints" and don't +represent a single logical change, please squash those together. + +Note that multiple commits often get squashed when they are landed (see the +notes about [commit squashing]). + +#### Commit message guidelines + +A good commit message should describe what changed and why. + +1. The first line should: + + * contain a short description of the change (preferably 50 characters or less, + and no more than 72 characters) + * be entirely in lowercase with the exception of proper nouns, acronyms, and + the words that refer to code, like function/variable names + * be prefixed with the name of the sub crate being changed (without the `tokio-` + prefix) and start with an imperative verb. If modifying `tokio` proper, + omit the crate prefix. + + Examples: + + * timer: introduce `Timeout` and deprecate `Deadline` + * export `Encoder`, `Decoder`, `Framed*` from tokio_codec + +2. Keep the second line blank. +3. Wrap all other lines at 72 columns (except for long URLs). +4. If your patch fixes an open issue, you can add a reference to it at the end + of the log. Use the `Fixes: #` prefix and the issue number. For other + references use `Refs: #`. `Refs` may include multiple issues, separated by a + comma. + + Examples: + + - `Fixes: #1337` + - `Refs: #1234` + +Sample complete commit message: + +```txt +subcrate: explain the commit in one line + +Body of commit message is a few lines of text, explaining things +in more detail, possibly giving some background about the issue +being fixed, etc. + +The body of the commit message can be several paragraphs, and +please do proper word-wrap and keep columns shorter than about +72 characters or so. That way, `git log` will show things +nicely even when it is indented. + +Fixes: #1337 +Refs: #453, #154 +``` + +### Opening the Pull Request + +From within GitHub, opening a new Pull Request will present you with a +[template] that should be filled out. Please try to do your best at filling out +the details, but feel free to skip parts if you're not sure what to put. + +[template]: .github/PULL_REQUEST_TEMPLATE.md + +### Discuss and update + +You will probably get feedback or requests for changes to your Pull Request. +This is a big part of the submission process so don't be discouraged! Some +contributors may sign off on the Pull Request right away, others may have +more detailed comments or feedback. This is a necessary part of the process +in order to evaluate whether the changes are correct and necessary. + +**Any community member can review a PR and you might get conflicting feedback**. +Keep an eye out for comments from code owners to provide guidance on conflicting +feedback. + +**Once the PR is open, do not rebase the commits**. See [Commit Squashing] for +more details. + +### Commit Squashing + +In most cases, **do not squash commits that you add to your Pull Request during +the review process**. When the commits in your Pull Request land, they may be +squashed into one commit per logical change. Metadata will be added to the +commit message (including links to the Pull Request, links to relevant issues, +and the names of the reviewers). The commit history of your Pull Request, +however, will stay intact on the Pull Request page. + +## Reviewing Pull Requests + +**Any Tokio community member is welcome to review any pull request**. + +All Tokio contributors who choose to review and provide feedback on Pull +Requests have a responsibility to both the project and the individual making the +contribution. Reviews and feedback must be helpful, insightful, and geared +towards improving the contribution as opposed to simply blocking it. If there +are reasons why you feel the PR should not land, explain what those are. Do not +expect to be able to block a Pull Request from advancing simply because you say +"No" without giving an explanation. Be open to having your mind changed. Be open +to working with the contributor to make the Pull Request better. + +Reviews that are dismissive or disrespectful of the contributor or any other +reviewers are strictly counter to the Code of Conduct. + +When reviewing a Pull Request, the primary goals are for the codebase to improve +and for the person submitting the request to succeed. **Even if a Pull Request +does not land, the submitters should come away from the experience feeling like +their effort was not wasted or unappreciated**. Every Pull Request from a new +contributor is an opportunity to grow the community. + +### Review a bit at a time. + +Do not overwhelm new contributors. + +It is tempting to micro-optimize and make everything about relative performance, +perfect grammar, or exact style matches. Do not succumb to that temptation. + +Focus first on the most significant aspects of the change: + +1. Does this change make sense for Tokio? +2. Does this change make Tokio better, even if only incrementally? +3. Are there clear bugs or larger scale issues that need attending to? +4. Is the commit message readable and correct? If it contains a breaking change + is it clear enough? + +Note that only **incremental** improvement is needed to land a PR. This means +that the PR does not need to be perfect, only better than the status quo. Follow +up PRs may be opened to continue iterating. + +When changes are necessary, *request* them, do not *demand* them, and **do not +assume that the submitter already knows how to add a test or run a benchmark**. + +Specific performance optimization techniques, coding styles and conventions +change over time. The first impression you give to a new contributor never does. + +Nits (requests for small changes that are not essential) are fine, but try to +avoid stalling the Pull Request. Most nits can typically be fixed by the Tokio +Collaborator landing the Pull Request but they can also be an opportunity for +the contributor to learn a bit more about the project. + +It is always good to clearly indicate nits when you comment: e.g. +`Nit: change foo() to bar(). But this is not blocking.` + +If your comments were addressed but were not folded automatically after new +commits or if they proved to be mistaken, please, [hide them][hiding-a-comment] +with the appropriate reason to keep the conversation flow concise and relevant. + +### Be aware of the person behind the code + +Be aware that *how* you communicate requests and reviews in your feedback can +have a significant impact on the success of the Pull Request. Yes, we may land +a particular change that makes Tokio better, but the individual might just not +want to have anything to do with Tokio ever again. The goal is not just having +good code. + +### Abandoned or Stalled Pull Requests + +If a Pull Request appears to be abandoned or stalled, it is polite to first +check with the contributor to see if they intend to continue the work before +checking if they would mind if you took it over (especially if it just has nits +left). When doing so, it is courteous to give the original contributor credit +for the work they started (either by preserving their name and email address in +the commit log, or by using an `Author: ` meta-data tag in the commit. + +_Adapted from the [Node.js contributing guide][node]_ + +[node]: https://github.com/nodejs/node/blob/master/CONTRIBUTING.md. +[hiding-a-comment]: https://help.github.com/articles/managing-disruptive-comments/#hiding-a-comment -- cgit v1.2.3