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* Add a contribution guide and link to it from readme * Add first pass at testing section for contribution guide * Format as in README.md * Add responding to community questions as way to contribute
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# Contributing to Consul | ||
>**Note:** We take Consul's security and our users' trust very seriously. | ||
>If you believe you have found a security issue in Consul, please responsibly | ||
>disclose by contacting us at security@hashicorp.com. | ||
**First:** if you're unsure or afraid of _anything_, just ask or submit the | ||
issue or pull request anyways. You won't be yelled at for giving your best | ||
effort. The worst that can happen is that you'll be politely asked to change | ||
something. We appreciate any sort of contributions, and don't want a wall of | ||
rules to get in the way of that. | ||
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That said, if you want to ensure that a pull request is likely to be merged, | ||
talk to us! A great way to do this is in issues themselves. When you want to | ||
work on an issue, comment on it first and tell us the approach you want to take. | ||
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## Getting Started | ||
### Some Ways to Contribute | ||
* Report potential bugs. | ||
* Suggest product enhancements. | ||
* Increase our test coverage. | ||
* Fix a [bug](https://github.com/hashicorp/consul/labels/bug). | ||
* Implement a requested [enhancement](https://github.com/hashicorp/consul/labels/enhancement). | ||
* Improve our guides and documentation. Consul's [Guides](https://www.consul.io/docs/guides/index.html), [Docs](https://www.consul.io/docs/index.html), and [api godoc](https://godoc.org/github.com/hashicorp/consul/api) | ||
are deployed from this repo. | ||
* Respond to questions about usage on the issue tracker or mailing list. | ||
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### Reporting an Issue: | ||
>Note: Issues on GitHub for Consul are intended to be related to bugs or feature requests. | ||
>Questions should be directed to other community resources such as the: [Mailing List](https://groups.google.com/group/consul-tool/), [FAQ](https://www.consul.io/docs/faq.html), or [Guides](https://www.consul.io/docs/guides/index.html). | ||
* Make sure you test against the latest released version. It is possible we | ||
already fixed the bug you're experiencing. However, if you are on an older | ||
version of Consul and feel the issue is critical, do let us know. | ||
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* Check existing issues (both open and closed) to make sure it has not been | ||
reported previously. | ||
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* Provide a reproducible test case. If a contributor can't reproduce an issue, | ||
then it dramatically lowers the chances it'll get fixed. | ||
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* Aim to respond promptly to any questions made by the Consul team on your | ||
issue. Stale issues will be closed. | ||
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### Issue Lifecycle | ||
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1. The issue is reported. | ||
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2. The issue is verified and categorized by a Consul maintainer. | ||
Categorization is done via tags. For example, bugs are tagged as "bug". | ||
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3. Unless it is critical, the issue is left for a period of time (sometimes many | ||
weeks), giving outside contributors a chance to address the issue. | ||
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4. The issue is addressed in a pull request or commit. The issue will be | ||
referenced in the commit message so that the code that fixes it is clearly | ||
linked. | ||
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5. The issue is closed. | ||
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## Building Consul | ||
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If you wish to work on Consul itself, you'll first need [Go](https://golang.org) | ||
installed (version 1.10+ is _required_). Make sure you have Go properly installed, | ||
including setting up your [GOPATH](https://golang.org/doc/code.html#GOPATH). | ||
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Next, clone this repository into `$GOPATH/src/github.com/hashicorp/consul` and | ||
then run `make dev`. In a few moments, you'll have a working `consul` executable | ||
in `consul/bin` and `$GOPATH/bin`: | ||
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>Note: `make dev` will build for your local machine's os/architecture. If you wish to build for all os/architecture combinations use `make`. | ||
## Making Changes to Consul | ||
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The first step to making changes is to fork Consul. Afterwards, the easiest way | ||
to work on the fork is to set it as a remote of the Consul project: | ||
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1. Navigate to `$GOPATH/src/github.com/hashicorp/consul` | ||
2. Rename the existing remote's name: `git remote rename origin upstream`. | ||
3. Add your fork as a remote by running | ||
`git remote add origin <github url of fork>`. For example: | ||
`git remote add origin https://github.com/myusername/consul`. | ||
4. Checkout a feature branch: `git checkout -t -b new-feature` | ||
5. Make changes | ||
6. Push changes to the fork when ready to submit PR: | ||
`git push -u origin new-feature` | ||
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By following these steps you can push to your fork to create a PR, but the code on disk still | ||
lives in the spot where the go cli tools are expecting to find it. | ||
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>Note: If you make any changes to the code, run `make format` to automatically format the code according to Go standards. | ||
## Testing | ||
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Before submitting changes, run **all** tests locally by typing `make test`. | ||
The test suite may fail if over-parallelized, so if you are seeing stochastic | ||
failures try `GOTEST_FLAGS="-p 2 -parallel 2" make test`. | ||
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Certain testing patterns such as creating a test `Client` in the `api` pkg | ||
or a `TestAgent` followed by a session can lead to flaky tests. More generally, | ||
any tests with components that rely on readiness of other components are often | ||
flaky. | ||
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Our makefile has some tooling built in to help validate the stability of single | ||
or package-wide tests. By running the `test-flake` goal we spin up a local docker | ||
container that mirrors a CPU constrained version of our CI environment. Here we can | ||
surface uncommon failures that are typically hard to reproduce by re-running | ||
tests multiple times. | ||
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The makefile goal accepts the following variables as arguments: | ||
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* **FLAKE_PKG** Target package (required) | ||
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* **FLAKE_TEST** Target test | ||
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* **FLAKE_CPUS** Amount of CPU resources for container | ||
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* **FLAKE_N** Number of times to run tests | ||
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Examples: | ||
`make test-flake FLAKE_PKG=connect/proxy` | ||
`make test-flake FLAKE_PKG=connect/proxy FLAKE_TEST=TestUpstreamListener` | ||
`make test-flake FLAKE_PKG=connect/proxy FLAKE_TEST=TestUpstreamListener FLAKE_CPUS=0.15 FLAKE_N=30` | ||
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The underlying script dumps the full Consul log output to `test.log` in | ||
the directory of the target package. In the example above it would be | ||
located at `consul/connect/proxy/test.log`. | ||
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Historically, the defaults for `FLAKE_CPUS` (30) and `FLAKE_N` (0.15) have been | ||
sufficient to surface a flaky test. If a test is run in this environment and | ||
it does not fail after 30 iterations, it should be sufficiently stable. | ||
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## Vendoring | ||
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Consul currently uses [govendor](https://github.com/kardianos/govendor) for | ||
vendoring and [vendorfmt](https://github.com/magiconair/vendorfmt) for formatting | ||
`vendor.json` to a more merge-friendly "one line per package" format. | ||
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If you are submitting a change that requires new or updated dependencies, | ||
please include them in `vendor/vendor.json` and in the `vendor/` folder. | ||
This helps everything get tested properly in CI. | ||
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Use `govendor fetch <project>` to add a project as a dependency. See govendor's [Quick Start](https://github.com/kardianos/govendor#quick-start-also-see-the-faq) for examples. | ||
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Please only apply the minimal vendor changes to get your PR to work. | ||
Consul does not attempt to track the latest version for each dependency. | ||
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