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Contributor guidelines (#762)
* update contributor guidelines doc * add content table * minor changes * remove horizontal rules * change order * Update CONTRIBUTING.md * Update CONTRIBUTING.md * Update CONTRIBUTING.md Co-authored-by: Colin <44817566+ColinSchwarz@users.noreply.github.com>
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CONTRIBUTING.md
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CONTRIBUTING.md
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# Contributing
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# Ethermint Contributor Guidelines
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Thank you for considering making contributions to Ethermint! Start by taking a look at this [coding repo](https://github.com/tendermint/coding) for overall information on repository workflow and standards.
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* [General Procedure](#general_procedure)
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* [Architecture Decision Records (ADR)](#adr)
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* [Forking](#forking)
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* [Dependencies](#dependencies)
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* [Protobuf](#protobuf)
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* [Development Procedure](#dev_procedure)
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* [Testing](#testing)
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* [Updating Documentation](#updating_doc)
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* [Branching Model and Release](#braching_model_and_release)
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* [PR Targeting](#pr_targeting)
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* [Pull Requests](#pull_requests)
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* [Process for reviewing PRs](#reviewing_prs)
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* [Pull Merge Procedure](#pull_merge_procedure)
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* [Release Procedure](#release_procedure)
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Please follow standard github best practices: fork the repo, branch from the tip of develop, make some commits, and submit a pull request to develop. See the [open issues](https://github.com/cosmos/ethermint/issues) for things we need help with!
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## <span id="general_procedure">General Procedure</span>
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Please make sure to use `gofmt` before every commit - the easiest way to do this is have your editor run it for you upon saving a file. Additionally please ensure that your code is lint compliant by running `make lint`
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Thank you for considering making contributions to Ethermint and related repositories!
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Looking for a good place to start contributing? How about checking out some [good first issues](https://github.com/cosmos/ethermint/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22)
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Ethermint uses [Tendermint’s coding repo](https://github.com/tendermint/coding) for overall information on repository
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workflow and standards.
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## Forking
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Contributing to this repo can mean many things such as participating in discussion or proposing code changes. To ensure
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a smooth workflow for all contributors, the following general procedure for contributing has been established:
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Please note that Go requires code to live under absolute paths, which complicates forking.
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While your fork should live at `https://github.com/<username>/ethermint`,
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the code should not exist at `$GOPATH/src/github.com/<username>/ethermint`.
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Instead, you should use `git remote` to add the fork as a new remote for the original repo,
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`$GOPATH/src/github.com/cosmos/ethermint `, and do all the work there.
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1. Either [open](https://github.com/cosmos/cosmos-sdk/issues/new/choose)
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or [find](https://github.com/cosmos/cosmos-sdk/issues) an issue you have identified and would like to contribute to
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resolving.
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2. Participate in thoughtful discussion on that issue.
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3. If you would like to contribute:
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1. If the issue is a proposal, ensure that the proposal has been accepted by ChainSafe’s Ethermint team.
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2. Ensure that nobody else has already begun working on the same issue. If someone already has, please make sure to
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contact the individual to collaborate.
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3. If nobody has been assigned the issue and you would like to work on it, make a comment on the issue to inform the
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community of your intentions to begin work. Ideally, wait for confirmation that no one has started it. However,
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if you are eager and do not get a prompt response, feel free to dive on in!
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4. Follow standard Github best practices:
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1. Fork the repo
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2. Branch from the HEAD of `development`(For core developers working within the cosmos-sdk repo, to ensure a
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clear ownership of branches, branches must be named with the convention `{moniker}/{issue#}-branch-name`).
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3. Make commits
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4. Submit a PR to `development`
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5. Be sure to submit the PR in `Draft` mode. Submit your PR early, even if it's incomplete as this indicates to the
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community you're working on something and allows them to provide comments early in the development process.
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6. When the code is complete it can be marked `Ready for Review`.
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7. Be sure to include a relevant change log entry in the `Unreleased` section of `CHANGELOG.md` (see file for log
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format).
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8. Please make sure to run `make format` before every commit - the easiest way to do this is having your editor run
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it for you upon saving a file. Additionally, please ensure that your code is lint compliant by running `make lint`
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. There are CI tests built into the Ethermint repository and all PR’s will require that these tests pass before
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they are able to be merged.
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For instance, to create a fork and work on a branch of it, One would:
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**Note**: for very small or blatantly obvious problems (such as typos), it is not required to open an issue to submit a
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PR, but be aware that for more complex problems/features, if a PR is opened before an adequate design discussion has
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taken place in a github issue, that PR runs a high likelihood of being rejected.
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* Create the fork on github, using the fork button.
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* Go to the original repo checked out locally (i.e. `$GOPATH/src/github.com/cosmos/ethermint`)
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* `git remote rename origin upstream`
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* `git remote add origin git@github.com:<username>/ethermint.git`
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Looking for a good place to start contributing? How about checking out
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some [good first issues](https://github.com/cosmos/ethermint/issues?q=label%3A%22good+first+issue%22).
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Now `origin` refers to my fork and `upstream` refers to the Ethermint version.
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So I can `git push -u origin <branch>` to update my fork, and make pull requests to Ethermint from there.
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Of course, replace `<username>` with your git handle.
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## <span id="adr">Architecture Decision Records (ADR)</span>
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To pull in updates from the origin repo, run
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When proposing an architecture decision for Ethermint, please create
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an [ADR](https://github.com/cosmos/ethermint/blob/development/docs/architecture/README.md) so further discussions can be
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made. We are following this process so all involved parties are in agreement before any party begins coding the proposed
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implementation. If you would like to see some examples of how these are written refer
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to [Tendermint ADRs](https://github.com/tendermint/tendermint/tree/master/docs/architecture).
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* `git fetch upstream`
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* `git rebase upstream/develop` (or whatever branch you want)
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## <span id="forking">Forking</span>
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Do not make Pull Requests to `master`, they will not be considered.
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Please note that Go requires code to live under absolute paths, which complicates forking. While my fork lives
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at `https://github.com/chainsafe/cosmos-sdk`, the code should never exist
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at `$GOPATH/src/github.com/chainsafe/cosmos-sdk`. Instead, we use `git remote` to add the fork as a new remote for the
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original repo,`$GOPATH/src/github.com/cosmos/cosmos-sdk`, and do all the work there.
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## Dependencies
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For instance, to create a fork and work on a branch of it, you would:
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We use [`dep`](https://github.com/golang/dep) to manage dependencies.
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1. Create the fork on github, using the fork button.
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2. Go to the original repo checked out locally. (i.e. `$GOPATH/src/github.com/cosmos/cosmos-sdk`)
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3. `git remote rename origin upstream`
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4. `git remote add origin git@github.com:chainsafe/cosmos-sdk.git`
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That said, the master branch of every Cosmos repository should just build
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with `go get`, which means they should be kept up-to-date with their
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dependencies so we can get away with telling people they can just `go get` our
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software.
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Now `origin` refers to my fork and `upstream` refers to the Cosmos-SDK version. So I can `git push -u origin master` to
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update my fork, and make pull requests to Cosmos-SDK from there. Of course, replace `chainsafe` with your git handle.
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Since some dependencies are not under our control, a third party may break our
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build, in which case we can fall back on `dep ensure` (or `make
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deps`). Even for dependencies under our control, `dep` helps us to
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keep multiple repos in sync as they evolve. Anything with an executable, such
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as apps, tools, and the core, should use `dep`.
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To pull in updates from the origin repo, run:
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Run `dep status` to get a list of vendor dependencies that may not be
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up-to-date.
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1. `git fetch upstream`
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2. `git rebase upstream/master` (or whatever branch you want)
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## Testing
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Please **NO DOT** make Pull Requests from `development`.
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All repos should be hooked up to [CircleCI](https://circleci.com/).
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## <span id="dependencies">Dependencies</span>
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If they have `.go` files in the root directory, they will be automatically
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tested by circle using `go test -v -race ./...`. If not, they will need a
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`circle.yml`. Ideally, every repo has a `Makefile` that defines `make test` and
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includes its continuous integration status using a badge in the `README.md`.
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We use [Go 1.15](https://github.com/golang/go/wiki/Modules) Modules to manage dependency versions.
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## Branching Model and Release
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The master branch of every Cosmos repository should just build with `go get`, which means they should be kept up-to-date
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with their dependencies, so we can get away with telling people they can just `go get` our software.
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User-facing repos should adhere to the branching model: http://nvie.com/posts/a-successful-git-branching-model/.
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That is, these repos should be well versioned, and any merge to master requires a version bump and tagged release.
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Since some dependencies are not under our control, a third party may break our build, in which case we can fall back
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on `go mod tidy -v`.
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## <span id="protobuf">Protobuf</span>
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We use [Protocol Buffers](https://developers.google.com/protocol-buffers) along
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with [gogoproto](https://github.com/gogo/protobuf) to generate code for use in Ethermint.
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For deterministic behavior around Protobuf tooling, everything is containerized using Docker. Make sure to have Docker
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installed on your machine, or head to [Docker's website](https://docs.docker.com/get-docker/) to install it.
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For formatting code in `.proto` files, you can run `make proto-format` command.
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For linting and checking breaking changes, we use [buf](https://buf.build/). You can use the commands `make proto-lint`
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and `make proto-check-breaking` to respectively lint your proto files and check for breaking changes.
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To generate the protobuf stubs, you can run `make proto-gen`.
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We also added the `make proto-all` command to run all the above commands sequentially.
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In order for imports to properly compile in your IDE, you may need to manually set your protobuf path in your IDE's
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workspace `settings/config`.
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For example, in vscode your `.vscode/settings.json` should look like:
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```json
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{
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"protoc": {
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"options": [
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"--proto_path=${workspaceRoot}/proto",
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"--proto_path=${workspaceRoot}/third_party/proto"
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]
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}
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}
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```
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## <span id="dev_procedure">Development Procedure</span>
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1. The latest state of development is on `development`.
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2. `development` must never
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fail `make lint, make test, make test-race, make test-rpc, make test-solidity, make test-import`
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3. No `--force` onto `development` (except when reverting a broken commit, which should seldom happen).
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4. Create your feature branch from `development` either on `github.com/cosmos/ethermint`, or your fork (
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using `git remote add origin`).
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5. Before submitting a pull request, begin `git rebase` on top of `development`.
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## <span id="testing">Testing</span>
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Ethermint uses [GitHub Actions](https://github.com/features/actions) for automated testing.
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## <span id="updating_doc">Updating Documentation</span>
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If you open a PR on the Ethermint repo, it is mandatory to update the relevant documentation in `/docs`. Please refer to
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the docs subdirectory and make changes accordingly. Prior to approval, the Code owners/approvers may request some
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updates to specific docs.
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## <span id="braching_model_and_release">Branching Model and Release</span>
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User-facing repos should adhere to the [trunk based development branching model](https://trunkbaseddevelopment.com/).
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Libraries need not follow the model strictly, but would be wise to.
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Ethermint utilizes [semantic versioning](https://semver.org/).
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### Development Procedure:
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- the latest state of development is on `develop`
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- `develop` must never fail `make test`
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- `develop` should not fail `make lint`
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- no --force onto `develop` (except when reverting a broken commit, which should seldom happen)
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- create a development branch either on github.com/cosmos/ethermint, or your fork (using `git remote add origin`)
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- [squash your commits](https://github.com/todotxt/todo.txt-android/wiki/Squash-All-Commits-Related-to-a-Single-Issue-into-a-Single-Commit) into an individual commit
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- before submitting a pull request, begin `git rebase` on top of `develop`
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### <span id="pr_targeting">PR Targeting</span>
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### Pull Merge Procedure:
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- ensure pull branch is rebased on develop
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- [squash your commits](https://github.com/todotxt/todo.txt-android/wiki/Squash-All-Commits-Related-to-a-Single-Issue-into-a-Single-Commit) into an individual commit
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- run `make test` and `make test-cli` to ensure that all tests pass
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- merge pull request
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Ensure that you base and target your PR on the `development` branch.
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### Release Procedure:
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- start on `develop`
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- prepare changelog/release issue
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- bump versions
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- push to release-vX.X.X to run CI
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- merge to master
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- merge master back to develop
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All feature additions should be targeted against `development`. Bug fixes for an outstanding release candidate should be
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targeted against the release candidate branch.
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### Hotfix Procedure:
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- start on `master`
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- checkout a new branch named hotfix-vX.X.X
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- make the required changes
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- these changes should be small and an absolute necessity
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- add a note to CHANGELOG.md
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- bump versions
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- push to hotfix-vX.X.X to run the extended integration tests on the CI
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- merge hotfix-vX.X.X to master
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- merge hotfix-vX.X.X to develop
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- delete the hotfix-vX.X.X branch
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### <span id="pull_requests">Pull Requests</span>
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To accommodate the review process, we suggest that PRs are categorically broken up. Ideally each PR addresses only a
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single issue. Additionally, as much as possible code refactoring and cleanup should be submitted as separate PRs from
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bug fixes/feature-additions.
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### <span id="reviewing_prs">Process for reviewing PRs</span>
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All PRs require two Reviews before merge. When reviewing PRs, please use the following review explanations:
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1. `LGTM` without an explicit approval means that the changes look good, but you haven't pulled down the code, run tests
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locally and thoroughly reviewed it.
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2. `Approval` through the GH UI means that you understand the code, documentation/spec is updated in the right places,
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you have pulled down and tested the code locally. In addition:
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* You must think through whether any added code could be partially combined (DRYed) with existing code.
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* You must think through any potential security issues or incentive-compatibility flaws introduced by the changes.
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* Naming convention must be consistent with the rest of the codebase.
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* Code must live in a reasonable location, considering dependency structures (e.g. not importing testing modules in
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production code, or including example code modules in production code).
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* If you approve of the PR, you are responsible for fixing any of the issues mentioned here.
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3. If you are only making "surface level" reviews, submit any notes as `Comments` without adding a review.
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### <span id="pull_merge_procedure">Pull Merge Procedure</span>
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1. Ensure pull branch is rebased on `development`.
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2. Run `make test` to ensure that all tests pass.
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3. Squash merge pull request.
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### <span id="release_procedure">Release Procedure</span>
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1. Start on `development`.
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2. Create the release candidate branch `rc/v*` (going forward known as `RC`) and ensure it's protected against pushing
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from anyone except the release manager/coordinator. No PRs targeting this branch should be merged unless exceptional
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circumstances arise.
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3. On the `RC` branch, prepare a new version section in the `CHANGELOG.md`. All links must be link-ified:
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`$ python ./scripts/linkify_changelog.py CHANGELOG.md`
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Copy the entries into a `RELEASE_CHANGELOG.md`. This is needed so the bot knows which entries to add to the release
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page on github.
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4. Kick off a large round of simulation testing (e.g. 400 seeds for 2k blocks).
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5. If errors are found during the simulation testing, commit the fixes to `development` and create a new `RC` branch (
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making sure to increment the `rcN`).
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6. After simulation has successfully completed, create the release branch (`release/vX.XX.X`) from the `RC` branch.
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7. Create a PR to `development` to incorporate the `CHANGELOG.md` updates.
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8. Tag the release (use `git tag -a`) and create a release in Github.
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9. Delete the `RC` branches.
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**Note**: ChainSafe’s Ethermint team currently cuts releases on a need to have basis. We will announce a more
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standardized release schedule as we near production readiness.
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