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e2e: move cluster retrieval functions to util/placement.go
- Moved functions responsible for retrieving the current cluster from dractions/retry.go to util/placement.go - Moved getPlacement from dractions/crug.go to util/placement.go - Refactored getTargetCluster to get drPolicy and also changed to pass currentCluster as argument. - Made GetCurrentCluster(added doc) and GetPlacement functions public. - Updated references to use the new public functions. Signed-off-by: Parikshith <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| // SPDX-FileCopyrightText: The RamenDR authors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
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| package util | ||
|
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||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "time" | ||
|
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||
| k8stypes "k8s.io/apimachinery/pkg/types" | ||
| "open-cluster-management.io/api/cluster/v1beta1" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
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| // GetCurrentCluster returns the name of the cluster where the workload is currently placed, | ||
| // based on the PlacementDecision for the given Placement resource. | ||
| // Assumes the PlacementDecision exists with a Decision. | ||
| // Not applicable for discovered apps before enabling protection, as no Placement exists. | ||
| func GetCurrentCluster(client client.Client, namespace string, placementName string) (string, error) { | ||
| placementDecision, err := waitPlacementDecision(client, namespace, placementName) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
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| return placementDecision.Status.Decisions[0].ClusterName, nil | ||
| } | ||
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| func GetPlacement(client client.Client, namespace, name string) (*v1beta1.Placement, error) { | ||
| placement := &v1beta1.Placement{} | ||
| key := k8stypes.NamespacedName{Namespace: namespace, Name: name} | ||
|
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| err := client.Get(context.Background(), key, placement) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| return placement, nil | ||
| } | ||
|
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| // waitPlacementDecision waits until we have a placement decision and returns the placement decision object. | ||
| func waitPlacementDecision(client client.Client, namespace string, placementName string, | ||
| ) (*v1beta1.PlacementDecision, error) { | ||
| startTime := time.Now() | ||
|
|
||
| for { | ||
| placement, err := GetPlacement(client, namespace, placementName) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| placementDecision, err := getPlacementDecisionFromPlacement(client, placement) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| if placementDecision != nil && len(placementDecision.Status.Decisions) > 0 { | ||
| return placementDecision, nil | ||
| } | ||
|
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| if time.Since(startTime) > Timeout { | ||
| return nil, fmt.Errorf("timeout waiting for placement decisions for %q ", placementName) | ||
| } | ||
|
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| time.Sleep(RetryInterval) | ||
| } | ||
| } | ||
|
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| func getPlacementDecisionFromPlacement(ctrlClient client.Client, placement *v1beta1.Placement, | ||
| ) (*v1beta1.PlacementDecision, error) { | ||
| matchLabels := map[string]string{ | ||
| v1beta1.PlacementLabel: placement.GetName(), | ||
| } | ||
|
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| listOptions := []client.ListOption{ | ||
| client.InNamespace(placement.GetNamespace()), | ||
| client.MatchingLabels(matchLabels), | ||
| } | ||
|
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| plDecisions := &v1beta1.PlacementDecisionList{} | ||
| if err := ctrlClient.List(context.Background(), plDecisions, listOptions...); err != nil { | ||
| return nil, fmt.Errorf("failed to list PlacementDecisions (placement: %s)", | ||
| placement.GetNamespace()+"/"+placement.GetName()) | ||
| } | ||
|
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| if len(plDecisions.Items) == 0 { | ||
| return nil, nil | ||
| } | ||
|
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| if len(plDecisions.Items) > 1 { | ||
| return nil, fmt.Errorf("multiple PlacementDecisions found for Placement (count: %d, placement: %s)", | ||
| len(plDecisions.Items), placement.GetNamespace()+"/"+placement.GetName()) | ||
| } | ||
|
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| plDecision := plDecisions.Items[0] | ||
| // r.Log.Info("Found ClusterDecision", "ClsDedicision", plDecision.Status.Decisions) | ||
|
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| if len(plDecision.Status.Decisions) > 1 { | ||
| return nil, fmt.Errorf("multiple placements found in PlacementDecision"+ | ||
| " (count: %d, Placement: %s, PlacementDecision: %s)", | ||
| len(plDecision.Status.Decisions), | ||
| placement.GetNamespace()+"/"+placement.GetName(), | ||
| plDecision.GetName()+"/"+plDecision.GetNamespace()) | ||
| } | ||
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| return &plDecision, nil | ||
| } |