feat: handle upgrade job

internal/managed_job/upgrade.go

@@ -0,0 +1,28 @@
+package managed_job
+
+import (
+	"flink-kube-operator/internal/crd/v1alpha1"
+	"flink-kube-operator/pkg"
+
+	"go.uber.org/zap"
+)
+
+func (job *ManagedJob) upgrade() {
+	if job.def.Status.LastSavepointPath != nil {
+		pkg.Logger.Info("upgrading job ",
+			zap.String("jobName", job.def.GetName()),
+			zap.String("currentJarURI", job.def.Spec.JarURI),
+			zap.String("prevJarURI", *job.def.Status.RunningJarURI),
+		)
+		job.run()
+	} else {
+		err := "There is no savepoint path existing"
+		pkg.Logger.Error(err)
+		job.crd.Patch(job.def.UID, map[string]interface{}{
+			"status": map[string]interface{}{
+				"lifeCycleStatus": v1alpha1.LifeCycleStatusUpgradeFailed,
+				"error":           err,
+			},
+		})
+	}
+}