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docs: adding some info on ICS processes (#1429)
* moving docs/old/testing.md to TESTING.md * adding release process * adding info on ICS releases * updating contributing guidelines * apply review suggestions * Update RELEASES.md Co-authored-by: insumity <[email protected]> * Update RELEASES.md Co-authored-by: insumity <[email protected]> * adding note about editor for unclog * add some context on breaking changes * adding context on state-compatibility * Update STATE-COMPATIBILITY.md Co-authored-by: insumity <[email protected]> --------- Co-authored-by: insumity <[email protected]>
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| # Releases | ||
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| - [Releases](#releases) | ||
| - [Semantic Versioning](#semantic-versioning) | ||
| - [Breaking Changes](#breaking-changes) | ||
| - [Release Cycle](#release-cycle) | ||
| - [Stable Release Policy](#stable-release-policy) | ||
| - [Version Matrix](#version-matrix) | ||
| - [Backwards Compatibility](#backwards-compatibility) | ||
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| ## Semantic Versioning | ||
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| Interchain Security (ICS) follows [semantic versioning](https://semver.org), but with the following deviations (similar to [IBC-Go](https://github.com/cosmos/ibc-go/blob/main/RELEASES.md)): | ||
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| - A library API breaking change will result in an increase of the MAJOR version number (X.y.z | X > 0). | ||
| - A state-machine breaking change will result in an increase of the MINOR version number (x.Y.z | x > 0). | ||
| - Any other changes (including node API breaking changes) will result in an increase of the PATCH version number (x.y.Z | x > 0). | ||
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| ### Breaking Changes | ||
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| A change is considered to be ***library API breaking*** if it modifies the integration of ICS on either consumer or provider chains (i.e., it changes the way ICS is used as a library). | ||
| Note that bumping the major version of [Cosmos SDK](https://github.com/cosmos/cosmos-sdk) or [IBC](https://github.com/cosmos/ibc-go) will be considered as a library API breaking change. | ||
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| A change is considered to be ***state-machine breaking*** if it requires a coordinated upgrade and/or state migration for either consumer or provider chains in order to preserve [state compatibility](./STATE-COMPATIBILITY.md). | ||
| Note that when bumping the dependencies of [Cosmos SDK](https://github.com/cosmos/cosmos-sdk) and [IBC](https://github.com/cosmos/ibc-go) we will only treat patch releases as non state-machine breaking. | ||
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| A change is considered to be ***node API breaking*** if it modifies the API provided by a node of either consumer or provider chains. | ||
| This includes events, queries, CLI interfaces. | ||
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| ## Release Cycle | ||
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| ICS follows a traditional release cycle involving release candidates (RCs) releases before finalizing a new version. | ||
| The stable release guarantees do not go into affect until a final release is performed. | ||
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| ❗***It is never advisable to use a non-final release in production.*** | ||
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| Final releases should contain little to no changes in comparison to the latest RC. | ||
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| A release should not be finalized until the development team and the external community have done sufficient integration tests on the targeted release. | ||
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| ## Stable Release Policy | ||
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| The beginning of a new major release series is marked by the release of a new major version. | ||
| A major release series is comprised of all minor and patch releases made under the same major version number. | ||
| The series continues to receive bug fixes (released as minor or patch releases) until it reaches end of life. | ||
| The date when a major release series reaches end of life is determined by one of the following methods: | ||
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| - If there is no known chain using a major release series, then it reached end of life. | ||
| This is a temporary policy that is possible due to the relatively low number of consumer chains. | ||
| - If the next major release is made within the first 6 months, then the end of | ||
| life date of the major release series is 1 year after its initial release. | ||
| - If the next major release is made 6 months after the initial release, then the | ||
| end of life date of the major release series is 6 months after the release date | ||
| of the next major release. | ||
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| Only the following major release series have a stable release status. | ||
| All missing minor release versions have been discontinued. | ||
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| | Release | End of Life Date | | ||
| |---------|------------------| | ||
| | `v1.2.x` | February 21, 2024 | | ||
| | `v2.0.x` | June 09, 2024 | | ||
| | `v2.1.x-provider-lsm` | June 09, 2024 | | ||
| | `v2.3.x-provider-lsm` | June 09, 2024 | | ||
| | `v3.1.x` | July 10, 2024 | | ||
| | `v3.2.x` | July 10, 2024 | | ||
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| **Note**: As of [Gaia v12.0.0](https://github.com/cosmos/gaia/releases/tag/v12.0.0), | ||
| the Cosmos Hub uses a fork of Cosmos SDK ([v0.45.16-ics-lsm](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.16-ics-lsm)) | ||
| that contains the Liquid Staking Module (LSM). | ||
| This means the Cosmos Hub requires a fork of ICS. | ||
| This fork is maintained by the development team and released using the `-lsm` prefix. | ||
| As soon as the Cosmos Hub uses mainline Cosmos SDK, the `-lsm` releases will reach end of life. | ||
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| ## Version Matrix | ||
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| Versions of Golang, IBC, Cosmos SDK and CometBFT used by ICS in the currently active releases: | ||
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| | ICS | Golang | IBC | Cosmos SDK | CometBFT | Note | | ||
| |-----|--------|-----|------------|----------|------| | ||
| | [v1.2.0-multiden](https://github.com/cosmos/interchain-security/releases/tag/v1.2.0-multiden) | 1.18 | v4.2.0 | v0.45.15-ics | v0.34.27 | Consumer only | | ||
| | [v2.0.0](https://github.com/cosmos/interchain-security/releases/tag/v2.0.0) | 1.19 | v4.4.2 | v0.45.15-ics | v0.34.28 | | ||
| | [v2.1.0-provider-lsm](https://github.com/cosmos/interchain-security/releases/tag/v2.1.0-provider-lsm) | 1.19 | v4.4.2 | v0.45.16-ics-lsm | v0.34.28 | Provider only (Cosmos Hub specific) | | ||
| | [v2.3.0-provider-lsm](https://github.com/cosmos/interchain-security/releases/tag/v2.3.0-provider-lsm) | 1.19 | v4.4.2 | v0.45.16-ics-lsm | v0.34.28 | Provider only (Cosmos Hub specific) | | ||
| | [v3.1.0](https://github.com/cosmos/interchain-security/releases/tag/v3.1.0) | 1.20 | v7.1.0 | v0.47.3 | v0.37.2 | | ||
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| ### Backwards Compatibility | ||
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| A MAJOR version of ICS will always be backwards compatible with the previous MAJOR version of ICS. | ||
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| The following table indicates the compatibility of currently active releases: | ||
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| | consumer | provider | `v2.0.0` | `v2.1.0-provider-lsm` | `v2.3.0-provider-lsm` | `v3.1.0` | | ||
| |----------|----------|--------:|----------------------:|----------------------:|---------:| | ||
| | `v1.2.0-multiden` || ✅ | ✅ | ✅ | ✅ | | ||
| | `v2.0.0` || ✅ | ✅ | ✅ | ✅ | | ||
| | `v3.1.0` || ✅ | ✅ | ✅ | ✅ | |
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| # Release Process | ||
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| - [Release Process](#release-process) | ||
| - [Changelog](#changelog) | ||
| - [Creating a new release branch](#creating-a-new-release-branch) | ||
| - [Cutting a new release](#cutting-a-new-release) | ||
| - [Update the changelog on main](#update-the-changelog-on-main) | ||
| - [Tagging Procedure](#tagging-procedure) | ||
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| This document outlines the release process for Interchain Security (ICS). | ||
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| For details on ICS releases, see [RELEASES.md](./RELEASES.md). | ||
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| ## Changelog | ||
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| For PRs that are changing production code, please add a changelog entry in `.changelog` (for details, see [contributing guidelines](./CONTRIBUTING.md#changelog)). | ||
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| To manage and generate the changelog on ICS, we currently use [unclog](https://github.com/informalsystems/unclog). | ||
| Read the [README.md](https://github.com/informalsystems/unclog#readme) in the unclog repo for instruction on how to install and use unclog. | ||
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| ### Creating a new release branch | ||
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| Unreleased changes are collected on `main` in `.changelog/unreleased/`. | ||
| However, `.changelog/` on `main` contains also existing releases (e.g., `v3.2.0`). | ||
| Thus, when creating a new release branch (e.g., `release/v3.3.x`), the following steps are necessary: | ||
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| - create a new release branch, e.g., `release/v3.3.x` | ||
| ```bash | ||
| git checkout main | ||
| git pull | ||
| git checkout -b release/v3.3.x | ||
| ``` | ||
| - delete all the sub-folders in `.changelog/` except `unreleased/` | ||
| ```bash | ||
| find ./.changelog -mindepth 1 -maxdepth 1 -type d -not -name unreleased | xargs rm -r | ||
| ``` | ||
| - replace the content of `.changelog/epilogue.md` with the following text | ||
| ```md | ||
| ## Previous Versions | ||
| [CHANGELOG of previous versions](https://github.com/cosmos/interchain-security/blob/main/CHANGELOG.md) | ||
| ``` | ||
| - push the release branch upstream | ||
| ```bash | ||
| git push | ||
| ``` | ||
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| ### Cutting a new release | ||
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| Before cutting a _**release candidate**_ (e.g., `v3.3.0-rc0`), the following steps are necessary: | ||
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| - move to the release branch, e.g., `release/v3.3.x` | ||
| ```bash | ||
| git checkout release/v3.3.x | ||
| ``` | ||
| - move all entries in ".changelog/unreleased" to the release version, e.g., `v3.3.0`, i.e., | ||
| ```bash | ||
| unclog release v3.3.0 | ||
| ``` | ||
| - update `CHANGELOG.md`, i.e., | ||
| ```bash | ||
| unclog build > CHANGELOG.md | ||
| ``` | ||
| - open a PR (from this new created branch) against the release branch, e.g., `release/v3.3.x` | ||
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| Now you can cut the release candidate, e.g., v3.3.0-rc0 (follow the [Tagging Procedure](#tagging-procedure)). | ||
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| ### Update the changelog on main | ||
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| Once the **final release** is cut, the new changelog section must be added to main: | ||
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| - checkout a new branch from the `main` branch, i.e., | ||
| ```bash | ||
| git checkout main | ||
| git pull | ||
| git checkout -b <username>/backport_changelog | ||
| ``` | ||
| - bring the new changelog section from the release branch into this branch, e.g., | ||
| ```bash | ||
| git checkout release/v3.3.x .changelog/v3.3.0 | ||
| ``` | ||
| - remove duplicate entries that are both in `.changelog/unreleased/` and the new changelog section, e.g., `.changelog/v3.3.0` | ||
| - update `CHANGELOG.md`, i.e., | ||
| ```bash | ||
| unclog build > CHANGELOG.md | ||
| ``` | ||
| - open a PR (from this new created branch) against `main` | ||
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| ## Tagging Procedure | ||
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| **Important**: _**Always create tags from your local machine**_ since all release | ||
| tags should be [signed and annotated](https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits). | ||
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| The following steps are the default for tagging a specific branch commit using git | ||
| on your local machine. Usually, release branches are labeled `release/v*`: | ||
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| Ensure you have checked out the commit you wish to tag and then do: | ||
| ```bash | ||
| git pull --tags | ||
| git tag -s v3.2.0 -m v3.2.0 | ||
| git push origin v3.2.0 | ||
| ``` | ||
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| To re-create a tag: | ||
| ```bash | ||
| # delete a tag locally | ||
| git tag -d v3.2.0 | ||
| # push the deletion to the remote | ||
| git push --delete origin v3.2.0 | ||
| # redo the tagging | ||
| git tag -s v3.2.0 -m v3.2.0 | ||
| git push origin v3.2.0 | ||
| ``` | ||
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| For final releases, once the tag is created, use the GitHub interface to create a release. | ||
| Note that this is not necessary for release candidates. |
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