Update to version 8.5.5 | Read HISTORY.md

Former-commit-id: dced7d472edabbab4f80c76051f13261928a8dea

core/maintenance/version.go

@@ -0,0 +1,83 @@
+package maintenance
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+
+	"github.com/kataras/iris/core/maintenance/version"
+
+	"github.com/kataras/golog"
+	"github.com/kataras/survey"
+)
+
+const (
+	// Version is the string representation of the current local Iris Web Framework version.
+	Version = "8.5.5"
+)
+
+// CheckForUpdates checks for any available updates
+// and asks for the user if want to update now or not.
+func CheckForUpdates() {
+	v := version.Acquire()
+	updateAvailale := v.Compare(Version) == version.Smaller
+
+	if updateAvailale {
+		has, ft := hasInternetConnection()
+		canUpdate := (has && ft && ask()) || !has || !ft
+		if canUpdate {
+			installVersion(v)
+		}
+	}
+}
+
+func installVersion(v version.Version) {
+	// on help? when asking for installing the new update
+	// and when answering "No".
+	ignoreUpdatesMsg := "Would you like to ignore future updates? Disable the version checker via:\napp.Run(..., iris.WithoutVersionChecker)"
+
+	// if update available ask for update action.
+	shouldUpdateNowMsg :=
+		fmt.Sprintf("A new version is available online[%s < %s].\nRelease notes: %s.\nUpdate now?",
+			Version, v.String(),
+			v.ChangelogURL)
+
+	var confirmUpdate bool
+	survey.AskOne(&survey.Confirm{
+		Message: shouldUpdateNowMsg,
+		Help:    ignoreUpdatesMsg,
+	}, &confirmUpdate, nil)
+
+	// run the updater last, so the user can star the repo and at the same time
+	// the app will update her/his local iris.
+	if confirmUpdate { // it's true only when update was available and user typed "yes".
+		repo := "github.com/kataras/iris/..."
+		cmd := exec.Command("go", "get", "-u", "-v", repo)
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stdout
+
+		if err := cmd.Run(); err != nil {
+			golog.Warnf("unexpected message while trying to go get,\nif you edited the original source code then you've to remove the whole $GOPATH/src/github.com/kataras folder and execute `go get -u github.com/kataras/iris/...` manually\n%v", err)
+			return
+		}
+
+		golog.Infof("Update process finished.\nManual rebuild and restart is required to apply the changes...\n")
+		return
+	}
+
+	// if update was available but chosen not to update then just continue...
+}
+
+/* Author's note:
+We could use github webhooks to automatic notify for updates
+when a new update is pushed to the repository
+even when server is already started and running but this would expose
+a route which dev may don't know about, so let it for now but if
+they ask it then I should add an optional configuration field
+to "live/realtime update" and implement the idea (which is already implemented in the iris-go server).
+*/
+
+/* Author's note:
+The old remote endpoint for version checker is still available on the server for backwards
+compatibility with older clients, it will stay there for a long period of time.
+*/