fix: resolve issue with jar upgrade not uploading new jar

Ensure the new jar is properly uploaded during an upgrade process. Previously, the jar was not replaced as expected.

internal/managed_job/pause.go

@@ -0,0 +1,71 @@
+package managed_job
+
+import (
+	"flink-kube-operator/internal/crd/v1alpha1"
+	"flink-kube-operator/pkg"
+	"os"
+	"time"
+
+	api "github.com/logi-camp/go-flink-client"
+	"go.uber.org/zap"
+)
+
+func (job *ManagedJob) pause() error {
+	var err error
+	if job.def.Status.JobId != nil {
+		result, stopJobErr := job.client.StopJobWithSavepoint(*job.def.Status.JobId, os.Getenv("SAVEPOINT_PATH"), false)
+		if stopJobErr != nil {
+			err = stopJobErr
+			pkg.Logger.Error("[managed-job] [pause] cannot stop job", zap.Error(err))
+			return err
+		}
+		var savepointPath string
+		for {
+			trackResult, err := job.client.TrackSavepoint(*job.def.Status.JobId, result.RequestID)
+			time.Sleep(time.Millisecond * 500)
+			if err == nil && trackResult.Status.Id == api.SavepointStatusInCompleted {
+				if trackResult.Operation.Location != "" {
+					savepointPath = trackResult.Operation.Location
+				}
+				break
+			}
+		}
+		if savepointPath != "" {
+			job.def.Status.LastSavepointPath = &savepointPath
+			job.def.Status.PauseSavepointTriggerId = nil
+			job.def.Status.JobStatus = ""
+			job.def.Status.LastSavepointPath = &savepointPath
+			lastSavepointDate := time.Now()
+			job.def.Status.LastSavepointDate = &lastSavepointDate
+			job.crd.Patch(job.def.UID, map[string]interface{}{
+				"status": map[string]interface{}{
+					"jobStatus":          "FINISHED",
+					"lifeCycleStatus":    v1alpha1.LifeCycleStatusGracefullyPaused,
+					"savepointTriggerId": nil,
+					"lastSavepointPath":  savepointPath,
+					"lastSavepointDate":  lastSavepointDate.Format(time.RFC3339),
+				},
+			})
+			pkg.Logger.Info(
+				"[managed-job] job paused successfully",
+				zap.String("jobName", job.def.GetName()),
+				zap.String("savepointPath", savepointPath),
+			)
+		} else {
+			job.crd.Patch(job.def.UID, map[string]interface{}{
+				"status": map[string]interface{}{
+					"lifeCycleStatus":   v1alpha1.LifeCycleStatusGracefulStopFailed,
+					"lastSavepointPath": savepointPath,
+					"lastSavepointDate": time.Now().Format(time.RFC3339),
+				},
+			})
+			pkg.Logger.Error(
+				"[managed-job] error in pausing job",
+				zap.Error(err),
+			)
+
+			return err
+		}
+	}
+	return nil
+}