Thank you for considering making contributions to Tendermint and related repositories! Start by taking a look at the [coding repo](https://github.com/tendermint/coding) for overall information on repository workflow and standards.
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/tendermint/tendermint/issues) for things we need help with!
Please follow standard github best practices: fork the repo, branch from the tip of `master`, make some commits, and submit a pull request to `master`.
See the [open issues](https://github.com/tendermint/tendermint/issues) for things we need help with!
Before making a pull request, please open an issue describing the
change you would like to make. If an issue for your change already exists,
@ -112,32 +113,36 @@ removed from the header in rpc responses as well.
## Branching Model and Release
We follow a variant of [git flow](http://nvie.com/posts/a-successful-git-branching-model/).
This means that all pull-requests should be made against develop. Any merge to
master constitutes a tagged release.
The main development branch is master.
Note all pull requests should be squash merged except for merging to master and
merging master back to develop. This keeps the commit history clean and makes it
Every release is maintained in a release branch named `vX.Y.Z`.
Note all pull requests should be squash merged except for merging to a release branch (named `vX.Y`). This keeps the commit history clean and makes it
easy to reference the pull request where a change was introduced.
### Development Procedure:
- the latest state of development is on `develop`
- `develop` must never fail `make test`
- never --force onto `develop` (except when reverting a broken commit, which should seldom happen)
### Development Procedure
- the latest state of development is on `master`
- `master` must never fail `make test`
- never --force onto `master` (except when reverting a broken commit, which should seldom happen)
- create a development branch either on github.com/tendermint/tendermint, or your fork (using `git remote add origin`)
- make changes and update the `CHANGELOG_PENDING.md` to record your change
- before submitting a pull request, run `git rebase` on top of the latest `develop`
- before submitting a pull request, run `git rebase` on top of the latest `master`
### Pull Merge Procedure:
- ensure pull branch is based on a recent develop
### Pull Merge Procedure
- ensure pull branch is based on a recent `master`
- run `make test` to ensure that all tests pass
- squash merge pull request
- the `unstable` branch may be used to aggregate pull merges before fixing tests
### Release Procedure:
- start on `develop`
- run integration tests (see `test_integrations` in Makefile)
- prepare release in a pull request against develop (to be squash merged):
### Release Procedure
#### Major Release
1. start on `master`
2. run integration tests (see `test_integrations` in Makefile)
3. prepare release in a pull request against `master` (to be squash merged):
- copy `CHANGELOG_PENDING.md` to top of `CHANGELOG.md`
- run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for
all issues
@ -147,14 +152,28 @@ easy to reference the pull request where a change was introduced.
./scripts/authors.sh <email>`
- reset the `CHANGELOG_PENDING.md`
- bump versions
- push latest develop with prepared release details to release/vX.X.X to run the extended integration tests on the CI
- if necessary, make pull requests against release/vX.X.X and squash merge them
- merge to master (don't squash merge!)
- merge master back to develop (don't squash merge!)
4. push your changes with prepared release details to `vX.X` (this will trigger the release `vX.X.0`)
5. merge back to master (don't squash merge!)
#### Minor Release
If there were no breaking changes and you need to create a release nonetheless,
the procedure is almost exactly like with a new release above.
The only difference is that in the end you create a pull request against the existing `X.X` branch.
The branch name should match the release number you want to create.
Merging this PR will trigger the next release.
For example, if the PR is against an existing 0.34 branch which already contains a v0.34.0 release/tag,
the patch version will be incremented and the created release will be v0.34.1.
### Hotfix Procedure:
#### Backport Release
- follow the normal development and release procedure without any differences
1. start from the existing release branch you want to backport changes to (e.g. v0.30)
Branch to a release/vX.X.X branch locally (e.g. release/v0.30.7)
2. cherry pick the commit(s) that contain the changes you want to backport (usually these commits are from squash-merged PRs which were already reviewed)
3. steps 2 and 3 from [Major Release](#major-release)
Ismail Khoffi
5 years ago
Ethan Buchman