traefik/pkg/version/version.go

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package version
import (
"context"
"net/http"
"net/url"
"time"
"github.com/google/go-github/v28/github"
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"github.com/gorilla/mux"
goversion "github.com/hashicorp/go-version"
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"github.com/rs/zerolog/log"
"github.com/unrolled/render"
)
var (
// Version holds the current version of traefik.
Version = "dev"
// Codename holds the current version codename of traefik.
Codename = "cheddar" // beta cheese
// BuildDate holds the build date of traefik.
BuildDate = "I don't remember exactly"
// StartDate holds the start date of traefik.
StartDate = time.Now()
// DisableDashboardAd disables ad in the dashboard.
DisableDashboardAd = false
)
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// Handler expose version routes.
type Handler struct{}
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var templatesRenderer = render.New(render.Options{
Directory: "nowhere",
})
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// Append adds version routes on a router.
func (v Handler) Append(router *mux.Router) {
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router.Methods(http.MethodGet).Path("/api/version").
HandlerFunc(func(response http.ResponseWriter, request *http.Request) {
v := struct {
Version string
Codename string
StartDate time.Time `json:"startDate"`
UUID string `json:"uuid,omitempty"`
DisableDashboardAd bool `json:"disableDashboardAd,omitempty"`
}{
Version: Version,
Codename: Codename,
StartDate: StartDate,
DisableDashboardAd: DisableDashboardAd,
}
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if err := templatesRenderer.JSON(response, http.StatusOK, v); err != nil {
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log.Error().Err(err).Send()
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}
})
}
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// CheckNewVersion checks if a new version is available.
func CheckNewVersion() {
if Version == "dev" {
return
}
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client := github.NewClient(nil)
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updateURL, err := url.Parse("https://update.traefik.io/")
if err != nil {
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log.Warn().Err(err).Msg("Error checking new version")
return
}
client.BaseURL = updateURL
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releases, resp, err := client.Repositories.ListReleases(context.Background(), "traefik", "traefik", nil)
if err != nil {
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log.Warn().Err(err).Msg("Error checking new version")
return
}
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if resp.StatusCode != http.StatusOK {
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log.Warn().Msgf("Error checking new version: status=%s", resp.Status)
return
}
currentVersion, err := goversion.NewVersion(Version)
if err != nil {
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log.Warn().Err(err).Msg("Error checking new version")
return
}
for _, release := range releases {
releaseVersion, err := goversion.NewVersion(*release.TagName)
if err != nil {
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log.Warn().Err(err).Msg("Error checking new version")
return
}
if len(currentVersion.Prerelease()) == 0 && len(releaseVersion.Prerelease()) > 0 {
continue
}
if releaseVersion.GreaterThan(currentVersion) {
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log.Warn().Err(err).Msgf("A new release of Traefik has been found: %s. Please consider updating.", releaseVersion.String())
return
}
}
}