2017-12-25 07:32:28 +00:00
|
|
|
Self-Update Mechanism for Go Commands using GitHub
|
|
|
|
==================================================
|
|
|
|
|
|
|
|
[go-github-selfupdate][] is a Go library to provide self-update mechanism to command line tools.
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
Go does not provide the way to install/update the stable version of tools. By default, Go command line tools are updated
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
- using `go get -u` (updating to HEAD)
|
|
|
|
- using system's package manager (depending on the platform)
|
2017-12-30 02:45:47 +00:00
|
|
|
- downloading executables from GitHub release page manually
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
By using this library, you will get 4th choice:
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
- from your command line tool directly (and automatically)
|
2017-12-25 07:32:28 +00:00
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
go-github-selfupdate detects the information of the latest release via [GitHub Releases API][] and check the current version.
|
|
|
|
If newer version than itself is detected, it downloads released binary from GitHub and replaces itself.
|
2017-12-25 07:32:28 +00:00
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
- Automatically detects the latest version of released binary on GitHub
|
|
|
|
- Retrieve the proper binary for the OS and arch where the binary is running
|
|
|
|
- Update the binary with rollback support on failure
|
|
|
|
- Tested on Linux, macOS and Windows
|
|
|
|
- Many archive and compression formats are supported (zip, gzip, tar)
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
[go-github-selfupdate]: https://github.com/rhysd/go-github-selfupdate
|
|
|
|
[semantic versioning]: https://semver.org/
|
|
|
|
[GitHub Releases API]: https://developer.github.com/v3/repos/releases/
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
## Try Out Example
|
|
|
|
|
|
|
|
TODO
|
|
|
|
|
2017-12-25 07:32:28 +00:00
|
|
|
## Usage
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
### Code Usage
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
It provides `selfupdate` package.
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
Following is the easiest way to use this package.
|
|
|
|
|
2017-12-25 07:32:28 +00:00
|
|
|
```go
|
|
|
|
import (
|
|
|
|
"log"
|
2017-12-30 02:45:47 +00:00
|
|
|
"github.com/blang/semver"
|
2017-12-26 02:45:08 +00:00
|
|
|
"github.com/rhysd/go-github-selfupdate/selfupdate"
|
2017-12-25 07:32:28 +00:00
|
|
|
)
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
const version = "1.2.3"
|
|
|
|
|
|
|
|
func doSelfUpdate() {
|
|
|
|
v := semver.MustParse(version)
|
|
|
|
latest, err := selfupdate.UpdateSelf(v, "myname/myrepo")
|
2017-12-25 07:32:28 +00:00
|
|
|
if err != nil {
|
2017-12-30 02:45:47 +00:00
|
|
|
log.Println("Binary update failed:", err)
|
2017-12-25 07:32:28 +00:00
|
|
|
return
|
|
|
|
}
|
2017-12-30 02:45:47 +00:00
|
|
|
if latest.Version.Equals(v) {
|
|
|
|
// latest version is the same as current version. It means current binary is up to date.
|
2017-12-25 07:32:28 +00:00
|
|
|
log.Println("Current binary is the latest version", version)
|
|
|
|
} else {
|
2017-12-30 02:45:47 +00:00
|
|
|
log.Println("Successfully updated to version", latest.Version)
|
2017-12-25 07:32:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
```
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
- `selfupdate.UpdateSelf()`: Detect the latest version of itself and run self update.
|
|
|
|
- `selfupdate.UpdateCommand()`: Detect the latest version of given repository and update given command.
|
|
|
|
- `selfupdate.DetectLatest()`: Detect the latest version of given repository.
|
|
|
|
- `selfupdate.UpdateTo()`: Update given command to the binary hosted on given URL.
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
Please see [the documentation page][GoDoc] for more detail.
|
|
|
|
|
|
|
|
### Naming Rules of Released Binaries
|
|
|
|
|
|
|
|
go-github-selfupdate assumes that released binaries are put for each combination of platforms and archs.
|
2017-12-30 02:45:47 +00:00
|
|
|
Binaries for each platform can be easily built using tools like [gox][]
|
2017-12-25 07:32:28 +00:00
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
You need to put the binaries with the following format.
|
|
|
|
|
|
|
|
```
|
|
|
|
{cmd}_{goos}_{goarch}{.ext}
|
|
|
|
```
|
|
|
|
|
|
|
|
`{cmd}` is a name of command.
|
|
|
|
`{goos}` and `{goarch}` are the platform and the arch type of the binary.
|
|
|
|
`{.ext}` is a file extension. go-github-selfupdate supports `.zip`, `.gzip` and `.tar.gz`.
|
|
|
|
You can also use blank and it means binary is not compressed.
|
|
|
|
|
|
|
|
If you compress binary, uncompressed directory or file must contain the executable named `{cmd}`.
|
|
|
|
|
|
|
|
And you can also use `-` for separator instead of `_` if you like.
|
|
|
|
|
|
|
|
For example, if your command name is `foo-bar`, one of followings is expected to be put in release
|
|
|
|
page on GitHub as binary for platform `linux` and arch `amd64`.
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
- `foo-bar_linux_amd64` (executable)
|
2017-12-30 02:45:47 +00:00
|
|
|
- `foo-bar_linux_amd64.zip` (zip file containing `foo-bar`)
|
|
|
|
- `foo-bar_linux_amd64.tar.gz` (tar file containing `foo-bar`)
|
|
|
|
- `foo-bar_linux_amd64.gzip` (gzip file of the executable `foo-bar`)
|
|
|
|
- `foo-bar-linux-amd64.tar.gz` (`-` is also ok for separator)
|
|
|
|
|
|
|
|
[gox]: https://github.com/mitchellh/gox
|
|
|
|
|
2017-12-25 07:32:28 +00:00
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
### Naming Rules of Versions (=Git Tags)
|
2017-12-25 07:32:28 +00:00
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
go-github-selfupdate searches binaries' versions via Git tag names (not a release title).
|
|
|
|
When your tool's version is `1.2.3`, you should use the version number for tag of the Git
|
|
|
|
repository (i.e. `1.2.3` or `v1.2.3`).
|
|
|
|
|
|
|
|
This library assumes you adopt [semantic versioning][]. It is necessary for comparing versions
|
|
|
|
systematically.
|
|
|
|
|
|
|
|
Prefix before version number `\d+\.\d+\.\d+` is automatically omitted. For example, `ver1.2.3` or
|
|
|
|
`release-1.2.3` are also ok.
|
|
|
|
|
|
|
|
Tags which don't contain a version number are ignored (i.e. `nightly`). And releases marked as `pre-release`
|
|
|
|
are also ignored.
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
### Structure of Releases
|
|
|
|
|
|
|
|
In summary, structure of releases on GitHub looks like:
|
|
|
|
|
|
|
|
- `v1.2.0`
|
2017-12-30 02:45:47 +00:00
|
|
|
- `foo-bar-linux-amd64.tar.gz`
|
|
|
|
- `foo-bar-linux-386.tar.gz`
|
|
|
|
- `foo-bar-darwin-amd64.tar.gz`
|
2017-12-25 07:32:28 +00:00
|
|
|
- `foo-bar-windows-amd64.zip`
|
|
|
|
- ... (Other binaries for v1.2.0)
|
|
|
|
- `v1.1.3`
|
2017-12-30 02:45:47 +00:00
|
|
|
- `foo-bar-linux-amd64.tar.gz`
|
|
|
|
- `foo-bar-linux-386.tar.gz`
|
|
|
|
- `foo-bar-darwin-amd64.tar.gz`
|
2017-12-25 07:32:28 +00:00
|
|
|
- `foo-bar-windows-amd64.zip`
|
|
|
|
- ... (Other binaries for v1.1.3)
|
|
|
|
- ... (older versions)
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
Tags which don't contain a version number are ignored (i.e. `nightly`). And releases marked as `pre-release` are also ignored.
|
|
|
|
|
|
|
|
### Debugging
|
|
|
|
|
|
|
|
This library can output logs for debugging. By default, logger is disabled.
|
|
|
|
You can enable the logger by following and can know the details of the self update.
|
|
|
|
|
|
|
|
```go
|
|
|
|
selfupdate.EnableLog()
|
|
|
|
```
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
## Dependencies
|
|
|
|
|
2017-12-30 02:45:47 +00:00
|
|
|
This library utilizes [go-github][] to retrieve the information of releases and [go-update][] to replace
|
|
|
|
current binary and [semver][] to compare versions.
|
2017-12-25 07:32:28 +00:00
|
|
|
|
|
|
|
> Copyright (c) 2013 The go-github AUTHORS. All rights reserved.
|
|
|
|
|
|
|
|
> Copyright 2015 Alan Shreve
|
|
|
|
|
|
|
|
> Copyright (c) 2014 Benedikt Lang <github at benediktlang.de>
|
|
|
|
|
|
|
|
[go-github]: https://github.com/google/go-github
|
2017-12-26 02:48:09 +00:00
|
|
|
[go-update]: https://github.com/inconshreveable/go-update
|
2017-12-25 07:32:28 +00:00
|
|
|
[semver]: https://github.com/blang/semver
|
2017-12-30 02:45:47 +00:00
|
|
|
|
|
|
|
## What is the different from [tj/go-update][]?
|
|
|
|
|
|
|
|
TODO
|
|
|
|
|
|
|
|
[tj/go-udpate]: https://github.com/tj/go-update
|
|
|
|
|
|
|
|
[GoDoc]: https://godoc.org/github.com/rhysd/go-github-selfupdate
|
|
|
|
|