# self_update
[](https://ci.appveyor.com/project/jaemk/self-update/branch/master)
[](https://travis-ci.org/jaemk/self_update)
[](https://crates.io/crates/self_update)
[](https://docs.rs/self_update)
`self_update` provides updaters for updating rust executables in-place from various release
distribution backends.
## Usage
Update (replace) the current executable with the latest release downloaded
from `https://api.github.com/repos/jaemk/self_update/releases/latest`.
Note, the [`trust`](https://github.com/japaric/trust) project provides a nice setup for
producing release-builds via CI (travis/appveyor).
### Features
The following [cargo features](https://doc.rust-lang.org/cargo/reference/manifest.html#the-features-section) are
available (but _disabled_ by default):
* `archive-tar`: Support for _tar_ archive format;
* `archive-zip`: Support for _zip_ archive format;
* `compression-flate2`: Support for _gzip_ compression;
* `compression-zip-deflate`: Support for _zip_'s _deflate_ compression format;
* `compression-zip-bzip2`: Support for _zip_'s _bzip2_ compression format;
* `rustls`: Use [pure rust TLS implementation](https://github.com/ctz/rustls) for network requests. This feature does _not_ support 32bit macOS;
Please activate the feature(s) needed by your release files.
### Example
Run the following example to see `self_update` in action:
`cargo run --example github --features "archive-tar archive-zip compression-flate2 compression-zip-deflate"`.
There's also an equivalent example for gitlab:
`cargo run --example gitlab --features "archive-tar archive-zip compression-flate2 compression-zip-deflate"`.
which runs something roughly equivalent to:
```rust
use self_update::cargo_crate_version;
fn update() -> Result<(), Box<::std::error::Error>> {
let status = self_update::backends::github::Update::configure()
.repo_owner("jaemk")
.repo_name("self_update")
.bin_name("github")
.show_download_progress(true)
.current_version(cargo_crate_version!())
.build()?
.update()?;
println!("Update status: `{}`!", status.version());
Ok(())
}
```
Amazon S3, Google GCS, and DigitalOcean Spaces are also supported through the `S3` backend to check for new releases. Provided a `bucket_name`
and `asset_prefix` string, `self_update` will look up all matching files using the following format
as a convention for the filenames: `[directory/]<asset name>-<semver>-<platform/target>.<extension>`.
Leading directories will be stripped from the file name allowing the use of subdirectories in the S3 bucket,
and any file not matching the format, or not matching the provided prefix string, will be ignored.
```rust
use self_update::cargo_crate_version;
fn update() -> Result<(), Box<::std::error::Error>> {
let status = self_update::backends::s3::Update::configure()
.bucket_name("self_update_releases")
.asset_prefix("something/self_update")
.region("eu-west-2")
.bin_name("self_update_example")
.show_download_progress(true)
.current_version(cargo_crate_version!())
.build()?
.update()?;
println!("S3 Update status: `{}`!", status.version());
Ok(())
}
```
Separate utilities are also exposed (**NOTE**: the following example _requires_ the `archive-tar` feature,
see the [features](#features) section above):
```rust
fn update() -> Result<(), Box<::std::error::Error>> {
let releases = self_update::backends::github::ReleaseList::configure()
.repo_owner("jaemk")
.repo_name("self_update")
.build()?
.fetch()?;
println!("found releases:");
println!("{:#?}\n", releases);
// get the first available release
let asset = releases[0]
.asset_for(&self_update::get_target()).unwrap();
let tmp_dir = tempfile::Builder::new()
.prefix("self_update")
.tempdir_in(::std::env::current_dir()?)?;
let tmp_tarball_path = tmp_dir.path().join(&asset.name);
let tmp_tarball = ::std::fs::File::open(&tmp_tarball_path)?;
self_update::Download::from_url(&asset.download_url)
.set_header(reqwest::header::ACCEPT, "application/octet-stream".parse()?)
.download_to(&tmp_tarball)?;
let bin_name = std::path::PathBuf::from("self_update_bin");
self_update::Extract::from_source(&tmp_tarball_path)
.archive(self_update::ArchiveKind::Tar(Some(self_update::Compression::Gz)))
.extract_file(&tmp_dir.path(), &bin_name)?;
let tmp_file = tmp_dir.path().join("replacement_tmp");
let bin_path = tmp_dir.path().join(bin_name);
self_update::Move::from_source(&bin_path)
.replace_using_temp(&tmp_file)
.to_dest(&::std::env::current_exe()?)?;
Ok(())
}
```
License: MIT