Package equinox allows applications to remotely update themselves with the equinox.io service.
import "gitee.com/marker/equinox"
const appID = "<YOUR EQUINOX APP ID>"
var publicKey = []byte(`
-----BEGIN PUBLIC KEY-----
MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAEtrVmBxQvheRArXjg2vG1xIprWGuCyESx
MMY8pjmjepSy2kuz+nl9aFLqmr+rDNdYvEBqQaZrYMc6k29gjvoQnQ==
-----END PUBLIC KEY-----
`)
func update(channel string) error {
opts := equinox.Options{Channel: channel}
if err := opts.SetPublicKeyPEM(publicKey); err != nil {
return err
}
// check for the update
resp, err := equinox.Check(appID, opts)
switch {
case err == equinox.NotAvailableErr:
fmt.Println("No update available, already at the latest version!")
return nil
case err != nil:
return err
}
// fetch the update and apply it
err = resp.Apply()
if err != nil {
return err
}
fmt.Printf("Updated to new version: %s!\n", resp.ReleaseVersion)
return nil
}
When you specify a channel in the update options, equinox will try to update the application to the latest release of your application published to that channel. Instead, you may wish to update the application to a specific (possibly older) version. You can do this by explicitly setting Version in the Options struct:
opts := equinox.Options{Version: "0.1.2"}
You may wish to ask the user for approval before updating to a new version. This is as simple as calling the Check function and only calling Apply on the returned result if the user approves. Example:
// check for the update
resp, err := equinox.Check(appID, opts)
switch {
case err == equinox.NotAvailableErr:
fmt.Println("No update available, already at the latest version!")
return nil
case err != nil:
return err
}
fmt.Println("New version available!")
fmt.Println("Version:", resp.ReleaseVersion)
fmt.Println("Name:", resp.ReleaseTitle)
fmt.Println("Details:", resp.ReleaseDescription)
ok := prompt("Would you like to update?")
if !ok {
return
}
err = resp.Apply()
// ...
All equinox releases must be signed with a private ECDSA key, and all updates verified with the public key portion. To do that, you'll need to generate a key pair. The equinox release tool can generate an ecdsa key pair for you easily:
equinox genkey
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