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v1.5 release with go.mod support #560

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62 changes: 61 additions & 1 deletion CHANGELOG.md
Original file line number Diff line number Diff line change
@@ -1,5 +1,66 @@
# Changelog

## v1.5.1 (2020-12-06)

- Performance improvement: removing 1 allocation by foregoing context.WithValue, thank you @bouk for
your contribution (https://github.com/go-chi/chi/pull/555). Note: new benchmarks posted in README.
- `middleware.CleanPath`: new middleware that clean's request path of double slashes
- deprecate & remove `chi.ServerBaseContext` in favour of stdlib `http.Server#BaseContext`
- plus other tiny improvements, see full commit history below
- History of changes: see https://github.com/go-chi/chi/compare/v4.1.2...v1.5.1


## v1.5.0 (2020-11-12) - now with go.mod support

`chi` dates back to 2016 with it's original implementation as one of the first routers to adopt the newly introduced
context.Context api to the stdlib -- set out to design a router that is faster, more modular and simpler than anything
else out there -- while not introducing any custom handler types or dependencies. Today, `chi` still has zero dependencies,
and in many ways is future proofed from changes, given it's minimal nature. Between versions, chi's iterations have been very
incremental, with the architecture and api being the same today as it was originally designed in 2016. For this reason it
makes chi a pretty easy project to maintain, as well thanks to the many amazing community contributions over the years
to who all help make chi better (total of 86 contributors to date -- thanks all!).

Chi has been an labour of love, art and engineering, with the goals to offer beautiful ergonomics, flexibility, performance
and simplicity when building HTTP services with Go. I've strived to keep the router very minimal in surface area / code size,
and always improving the code wherever possible -- and as of today the `chi` package is just 1082 lines of code (not counting
middlewares, which are all optional). As well, I don't have the exact metrics, but from my analysis and email exchanges from
companies and developers, chi is used by thousands of projects around the world -- thank you all as there is no better form of
joy for me than to have art I had started be helpful and enjoyed by others. And of course I use chi in all of my own projects too :)

For me, the asthetics of chi's code and usage are very important. With the introduction of Go's module support
(which I'm a big fan of), chi's past versioning scheme choice to v2, v3 and v4 would mean I'd require the import path
of "github.com/go-chi/chi/v4", leading to the lengthy discussion at https://github.com/go-chi/chi/issues/462.
Haha, to some, you may be scratching your head why I've spent > 1 year stalling to adopt "/vXX" convention in the import
path -- which isn't horrible in general -- but for chi, I'm unable to accept it as I strive for perfection in it's API design,
aesthetics and simplicity. It just doesn't feel good to me given chi's simple nature -- I do not foresee a "v5" or "v6",
and upgrading between versions in the future will also be just incremental.

I do understand versioning is a part of the API design as well, which is why the solution for a while has been to "do nothing",
as Go supports both old and new import paths with/out go.mod. However, now that Go module support has had time to iron out kinks and
is adopted everywhere, it's time for chi to get with the times. Luckily, I've discovered a path forward that will make me happy,
while also not breaking anyone's app who adopted a prior versioning from tags in v2/v3/v4. I've made an experimental release of
v1.5.0 with go.mod silently, and tested it with new and old projects, to ensure the developer experience is preserved, and it's
largely unnoticed. Fortunately, Go's toolchain will check the tags of a repo and consider the "latest" tag the one with go.mod.
However, you can still request a specific older tag such as v4.1.2, and everything will "just work". But new users can just
`go get github.com/go-chi/chi` or `go get github.com/go-chi/chi@latest` and they will get the latest version which contains
go.mod support, which is v1.5.0+. `chi` will not change very much over the years, just like it hasn't changed much from 4 years ago.
Therefore, we will stay on v1.x from here on, starting from v1.5.0. Any breaking changes will bump a "minor" release and
backwards-compatible improvements/fixes will bump a "tiny" release.

For existing projects who want to upgrade to the latest go.mod version, run: `go get -u github.com/go-chi/chi@v1.5.0`,
which will get you on the go.mod version line (as Go's mod cache may still remember v4.x). Brand new systems can run
`go get -u github.com/go-chi/chi` or `go get -u github.com/go-chi/chi@latest` to install chi, which will install v1.5.0+
built with go.mod support.

My apologies to the developers who will disagree with the decisions above, but, hope you'll try it and see it's a very
minor request which is backwards compatible and won't break your existing installations.

Cheers all, happy coding!


---


## v4.1.2 (2020-06-02)

- fix that handles MethodNotAllowed with path variables, thank you @caseyhadden for your contribution
Expand All @@ -23,7 +84,6 @@
- middleware.Recoverer: a bit prettier
- History of changes: see https://github.com/go-chi/chi/compare/v4.0.4...v4.1.0


## v4.0.4 (2020-03-24)

- middleware.Recoverer: new pretty stack trace printing (https://github.com/go-chi/chi/pull/496)
Expand Down
19 changes: 16 additions & 3 deletions README.md
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Expand Up @@ -15,22 +15,24 @@ public API service, which in turn powers all of our client-side applications.
The key considerations of chi's design are: project structure, maintainability, standard http
handlers (stdlib-only), developer productivity, and deconstructing a large system into many small
parts. The core router `github.com/go-chi/chi` is quite small (less than 1000 LOC), but we've also
included some useful/optional subpackages: [middleware](/middleware), [render](https://github.com/go-chi/render) and [docgen](https://github.com/go-chi/docgen). We hope you enjoy it too!
included some useful/optional subpackages: [middleware](/middleware), [render](https://github.com/go-chi/render)
and [docgen](https://github.com/go-chi/docgen). We hope you enjoy it too!

## Install

`go get -u github.com/go-chi/chi@v4`
`go get -u github.com/go-chi/chi`


## Features

* **Lightweight** - cloc'd in ~1000 LOC for the chi router
* **Fast** - yes, see [benchmarks](#benchmarks)
* **100% compatible with net/http** - use any http or middleware pkg in the ecosystem that is also compatible with `net/http`
* **Designed for modular/composable APIs** - middlewares, inline middlewares, route groups and subrouter mounting
* **Designed for modular/composable APIs** - middlewares, inline middlewares, route groups and sub-router mounting
* **Context control** - built on new `context` package, providing value chaining, cancellations and timeouts
* **Robust** - in production at Pressly, CloudFlare, Heroku, 99Designs, and many others (see [discussion](https://github.com/go-chi/chi/issues/91))
* **Doc generation** - `docgen` auto-generates routing documentation from your source to JSON or Markdown
* **Go.mod support** - v1.x of chi (starting from v1.5.0), now has go.mod support (see [CHANGELOG](https://github.com/go-chi/chi/blob/master/CHANGELOG.md#v150-2020-11-12---now-with-gomod-support))
* **No external dependencies** - plain ol' Go stdlib + net/http


Expand Down Expand Up @@ -461,6 +463,17 @@ on the duplicated (alloc'd) request and returns it the new request object. This
how setting context on a request in Go works.


## Go module support & note on chi's versioning

* Go.mod support means we reset our versioning starting from v1.5 (see [CHANGELOG](https://github.com/go-chi/chi/blob/master/CHANGELOG.md#v150-2020-11-12---now-with-gomod-support))
* All older tags are preserved, are backwards-compatible and will "just work" as they
* Brand new systems can run `go get -u github.com/go-chi/chi` as normal, or `go get -u github.com/go-chi/chi@latest`
to install chi, which will install v1.x+ built with go.mod support, starting from v1.5.0.
* For existing projects who want to upgrade to the latest go.mod version, run: `go get -u github.com/go-chi/chi@v1.5.0`,
which will get you on the go.mod version line (as Go's mod cache may still remember v4.x).
* Any breaking changes will bump a "minor" release and backwards-compatible improvements/fixes will bump a "tiny" release.


## Credits

* Carl Jackson for https://github.com/zenazn/goji
Expand Down
3 changes: 3 additions & 0 deletions go.mod
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@@ -0,0 +1,3 @@
module github.com/go-chi/chi

go 1.15