package version import ( "context" "net/http" "net/url" "github.com/containous/traefik/v2/pkg/log" "github.com/google/go-github/v28/github" "github.com/gorilla/mux" goversion "github.com/hashicorp/go-version" "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" ) // Handler expose version routes. type Handler struct{} var templatesRenderer = render.New(render.Options{ Directory: "nowhere", }) // Append adds version routes on a router. func (v Handler) Append(router *mux.Router) { router.Methods(http.MethodGet).Path("/api/version"). HandlerFunc(func(response http.ResponseWriter, request *http.Request) { v := struct { Version string Codename string }{ Version: Version, Codename: Codename, } if err := templatesRenderer.JSON(response, http.StatusOK, v); err != nil { log.WithoutContext().Error(err) } }) } // CheckNewVersion checks if a new version is available. func CheckNewVersion() { if Version == "dev" { return } logger := log.WithoutContext() client := github.NewClient(nil) updateURL, err := url.Parse("https://update.traefik.io/") if err != nil { logger.Warnf("Error checking new version: %s", err) return } client.BaseURL = updateURL releases, resp, err := client.Repositories.ListReleases(context.Background(), "containous", "traefik", nil) if err != nil { logger.Warnf("Error checking new version: %s", err) return } if resp.StatusCode != http.StatusOK { logger.Warnf("Error checking new version: status=%s", resp.Status) return } currentVersion, err := goversion.NewVersion(Version) if err != nil { logger.Warnf("Error checking new version: %s", err) return } for _, release := range releases { releaseVersion, err := goversion.NewVersion(*release.TagName) if err != nil { logger.Warnf("Error checking new version: %s", err) return } if len(currentVersion.Prerelease()) == 0 && len(releaseVersion.Prerelease()) > 0 { continue } if releaseVersion.GreaterThan(currentVersion) { logger.Warnf("A new release has been found: %s. Please consider updating.", releaseVersion.String()) return } } }