feat: record workflow topology to workflow run (#1312)

If the topology of a workflow changed, the old workflowRun's
running status can not display, So we need to record workflow's
topology at workflowRun running time to workflowRun status.

pkg/apis/cyclone/v1alpha1/workflow_run.go

@@ -134,6 +134,12 @@ type StageStatus struct {
 	Status Status `json:"status"`
 	// Key-value outputs of this stage
 	Outputs []KeyValue `json:"outputs"`
+	// Stages that this stage depends on.
+	Depends []string `json:"depends"`
+	// Trivial indicates whether this stage is critical in the workflow. If set to true, it means the workflow
+	// can tolerate failure of this stage. In this case, all other stages can continue to execute and the overall
+	// status of the workflow execution can still be succeed.
+	Trivial bool `json:"trivial"`
 }
 
 // StatusPhase represents the phase of stage status or workflowrun status.

pkg/workflow/workflowrun/operator.go

@@ -119,7 +119,7 @@ func (o *operator) GetRecorder() record.EventRecorder {
 	return o.recorder
 }
 
-// InitStagesStatus initializes all missing stages' status to pending.
+// InitStagesStatus initializes all missing stages' status to pending, and record workflow topology at this time to workflowRun status.
 func (o *operator) InitStagesStatus() {
 	if o.wfr.Status.Stages == nil {
 		o.wfr.Status.Stages = make(map[string]*v1alpha1.StageStatus)
@@ -131,6 +131,8 @@ func (o *operator) InitStagesStatus() {
 				Status: v1alpha1.Status{
 					Phase: v1alpha1.StatusPending,
 				},
+				Depends: stg.Depends,
+				Trivial: stg.Trivial,
 			}
 		}
 	}