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buildversion.go
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buildversion.go
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package buildversion
import (
"io/ioutil"
"net/http"
"runtime"
"time"
semver "github.com/Masterminds/semver/v3"
"github.com/pkg/errors"
)
var (
build Build
)
// Build holds details about this build of the Ship binary
type Build struct {
Version string `json:"version,omitempty"`
GitSHA string `json:"git,omitempty"`
BuildTime time.Time `json:"buildTime,omitempty"`
TimeFallback string `json:"buildTimeFallback,omitempty"`
GoInfo GoInfo `json:"go,omitempty"`
RunAt *time.Time `json:"runAt,omitempty"`
}
type GoInfo struct {
Version string `json:"version,omitempty"`
Compiler string `json:"compiler,omitempty"`
OS string `json:"os,omitempty"`
Arch string `json:"arch,omitempty"`
}
// initBuild sets up the version info from build args
func initBuild() {
build.Version = version
if len(gitSHA) >= 7 {
build.GitSHA = gitSHA[:7]
}
var err error
build.BuildTime, err = time.Parse(time.RFC3339, buildTime)
if err != nil {
build.TimeFallback = buildTime
}
build.GoInfo = getGoInfo()
build.RunAt = &RunAt
}
// GetBuild gets the build
func GetBuild() Build {
return build
}
// Version gets the version
func Version() string {
if build.Version == "" {
return "v0.0.0-unknown"
}
return build.Version
}
// GitSHA gets the gitsha
func GitSHA() string {
return build.GitSHA
}
// BuildTime gets the build time
func BuildTime() time.Time {
return build.BuildTime
}
func getGoInfo() GoInfo {
return GoInfo{
Version: runtime.Version(),
Compiler: runtime.Compiler,
OS: runtime.GOOS,
Arch: runtime.GOARCH,
}
}
// IsLatestRelease queries github for the latest release in the project repo. If that release has a semver greater
// than the current release, it returns false and the new latest release semver. Otherwise, it returns true or error
func IsLatestRelease() (bool, string, error) {
fastClient := &http.Client{
Timeout: time.Second * 1,
}
return isLatestRelease(fastClient, "https://kots.io")
}
func isLatestRelease(client *http.Client, upstream string) (bool, string, error) {
resp, err := client.Get(upstream + "/install?version")
if err != nil {
return false, "", errors.Wrapf(err, "find latest release")
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return false, "", errors.Wrapf(err, "read latest release body")
}
currentSemver, err := semver.NewVersion(Version())
if err != nil {
return false, "", errors.Wrapf(err, "current release %s does not parse as semver", Version())
}
latestSemver, err := semver.NewVersion(string(body))
if err != nil {
return false, "", errors.Wrapf(err, "latest release %s does not parse as semver", string(body))
}
if currentSemver.LessThan(latestSemver) {
return false, string(body), nil
}
return true, "", nil
}