retain pods when pod finnish

Author: qianjun1993

doc/tutorial.md

@@ -80,6 +80,10 @@ type TAppSpec struct {
 	// other nodes, otherwise it depends on other conditions(e.g. pod restart policy).
 	NeverMigrate bool `json:"neverMigrate,omitempty"`
 
+	// RetainFinishedPod indicates whether to delete pod after all pods are failed or success
+	// Default values is false.
+	RetainFinishedPod bool `json:"retainFinishedPod,omitempty"`
+
 	// volumeClaimTemplates is a list of claims that pods are allowed to reference.
 	// The TApp controller is responsible for mapping network identities to
 	// claims in a way that maintains the identity of a pod. Every claim in

pkg/apis/tappcontroller/v1/types.go

@@ -94,6 +94,10 @@ type TAppSpec struct {
 	// other nodes, otherwise it depends on other conditions(e.g. pod restart policy).
 	NeverMigrate bool `json:"neverMigrate,omitempty"`
 
+	// RetainFinishedPod indicates whether to delete pod after all pods are failed or success.
+	// Default values is false.
+	RetainFinishedPod bool `json:"retainFinishedPod,omitempty"`
+
 	// volumeClaimTemplates is a list of claims that pods are allowed to reference.
 	// The TApp controller is responsible for mapping network identities to
 	// claims in a way that maintains the identity of a pod. Every claim in

pkg/tapp/controller.go

@@ -609,7 +609,7 @@ func getDesiredInstance(tapp *tappv1.TApp) (running, completed sets.String) {
 	}
 
 	// If `deletePodAfterAppFinish` is not enabled, pod will be deleted once instance finishes.
-	if !getDeletePodAfterAppFinish() || isTAppFinished(tapp) {
+	if (!getDeletePodAfterAppFinish() || isTAppFinished(tapp)) && !tapp.Spec.RetainFinishedPod {
 		for id, status := range tapp.Status.Statuses {
 			// Instance finished
 			if status == tappv1.InstanceFailed || status == tappv1.InstanceSucc {