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| // Copyright 2024 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
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| package v1beta1 | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "strings" | ||
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| refsv1beta1 "github.com/GoogleCloudPlatform/k8s-config-connector/apis/refs/v1beta1" | ||
| "github.com/GoogleCloudPlatform/k8s-config-connector/pkg/k8s" | ||
| apierrors "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
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| var _ refsv1beta1.ExternalNormalizer = &BigQueryDatasetRef{} | ||
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| // BigQueryDatasetRef defines the resource reference to BigQueryDataset, which "External" field | ||
| // holds the GCP identifier for the KRM object. | ||
| type BigQueryDatasetRef struct { | ||
| // A reference to an externally managed BigQueryDataset resource. | ||
| // Should be in the format "projects/<projectID>/locations/<location>/datasets/<datasetID>". | ||
| External string `json:"external,omitempty"` | ||
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| // The name of a BigQueryDataset resource. | ||
| Name string `json:"name,omitempty"` | ||
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| // The namespace of a BigQueryDataset resource. | ||
| Namespace string `json:"namespace,omitempty"` | ||
|
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| parent *BigQueryDatasetParent | ||
| } | ||
|
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| // NormalizedExternal provision the "External" value for other resource that depends on BigQueryDataset. | ||
| // If the "External" is given in the other resource's spec.BigQueryDatasetRef, the given value will be used. | ||
| // Otherwise, the "Name" and "Namespace" will be used to query the actual BigQueryDataset object from the cluster. | ||
| func (r *BigQueryDatasetRef) NormalizedExternal(ctx context.Context, reader client.Reader, otherNamespace string) (string, error) { | ||
| if r.External != "" && r.Name != "" { | ||
| return "", fmt.Errorf("cannot specify both name and external on %s reference", BigQueryDatasetGVK.Kind) | ||
| } | ||
| // From given External | ||
| if r.External != "" { | ||
| if _, _, err := ParseBigQueryDatasetExternal(r.External); err != nil { | ||
| return "", err | ||
| } | ||
| return r.External, nil | ||
| } | ||
|
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| // From the Config Connector object | ||
| if r.Namespace == "" { | ||
| r.Namespace = otherNamespace | ||
| } | ||
| key := types.NamespacedName{Name: r.Name, Namespace: r.Namespace} | ||
| u := &unstructured.Unstructured{} | ||
| u.SetGroupVersionKind(BigQueryDatasetGVK) | ||
| if err := reader.Get(ctx, key, u); err != nil { | ||
| if apierrors.IsNotFound(err) { | ||
| return "", k8s.NewReferenceNotFoundError(u.GroupVersionKind(), key) | ||
| } | ||
| return "", fmt.Errorf("reading referenced %s %s: %w", BigQueryDatasetGVK, key, err) | ||
| } | ||
| // Get external from status.externalRef. This is the most trustworthy place. | ||
| actualExternalRef, _, err := unstructured.NestedString(u.Object, "status", "externalRef") | ||
| if err != nil { | ||
| return "", fmt.Errorf("reading status.externalRef: %w", err) | ||
| } | ||
| if actualExternalRef == "" { | ||
| return "", k8s.NewReferenceNotReadyError(u.GroupVersionKind(), key) | ||
| } | ||
| r.External = actualExternalRef | ||
| return r.External, nil | ||
| } | ||
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| // New builds a BigQueryDatasetRef from the Config Connector BigQueryDataset object. | ||
| func NewBigQueryDatasetRef(ctx context.Context, reader client.Reader, obj *BigQueryDataset) (*BigQueryDatasetRef, error) { | ||
| id := &BigQueryDatasetRef{} | ||
|
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| // Get Parent | ||
| projectRef, err := refsv1beta1.ResolveProject(ctx, reader, obj, obj.Spec.ProjectRef) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| projectID := projectRef.ProjectID | ||
| if projectID == "" { | ||
| return nil, fmt.Errorf("cannot resolve project") | ||
| } | ||
| location := obj.Spec.Location | ||
| id.parent = &BigQueryDatasetParent{ProjectID: projectID, Location: valueOf(location)} | ||
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| // Get desired ID | ||
| resourceID := valueOf(obj.Spec.ResourceID) | ||
| if resourceID == "" { | ||
| resourceID = obj.GetName() | ||
| } | ||
| if resourceID == "" { | ||
| return nil, fmt.Errorf("cannot resolve resource ID") | ||
| } | ||
|
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| // Use approved External | ||
| externalRef := valueOf(obj.Status.ExternalRef) | ||
| if externalRef == "" { | ||
| id.External = asBigQueryDatasetExternal(id.parent, resourceID) | ||
| return id, nil | ||
| } | ||
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| // Validate desired with actual | ||
| actualParent, actualResourceID, err := ParseBigQueryDatasetExternal(externalRef) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if actualParent.ProjectID != projectID { | ||
| return nil, fmt.Errorf("spec.projectRef changed, expect %s, got %s", actualParent.ProjectID, projectID) | ||
| } | ||
| if actualParent.Location != valueOf(location) { | ||
| return nil, fmt.Errorf("spec.location changed, expect %s, got %s", actualParent.Location, valueOf(location)) | ||
| } | ||
| if actualResourceID != resourceID { | ||
| return nil, fmt.Errorf("cannot reset `metadata.name` or `spec.resourceID` to %s, since it has already assigned to %s", | ||
| resourceID, actualResourceID) | ||
| } | ||
| id.External = externalRef | ||
| id.parent = &BigQueryDatasetParent{ProjectID: projectID, Location: valueOf(location)} | ||
| return id, nil | ||
| } | ||
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| func (r *BigQueryDatasetRef) Parent() (*BigQueryDatasetParent, error) { | ||
| if r.parent != nil { | ||
| return r.parent, nil | ||
| } | ||
| if r.External != "" { | ||
| parent, _, err := ParseBigQueryDatasetExternal(r.External) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return parent, nil | ||
| } | ||
| return nil, fmt.Errorf("BigQueryDatasetRef not initialized from `NewBigQueryDatasetRef` or `NormalizedExternal`") | ||
| } | ||
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| type BigQueryDatasetParent struct { | ||
| ProjectID string | ||
| Location string | ||
| } | ||
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| func (p *BigQueryDatasetParent) String() string { | ||
| return "projects/" + p.ProjectID + "/locations/" + p.Location | ||
| } | ||
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| func asBigQueryDatasetExternal(parent *BigQueryDatasetParent, resourceID string) (external string) { | ||
| return parent.String() + "/datasets/" + resourceID | ||
| } | ||
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| func ParseBigQueryDatasetExternal(external string) (parent *BigQueryDatasetParent, resourceID string, err error) { | ||
| external = strings.TrimPrefix(external, "/") | ||
| tokens := strings.Split(external, "/") | ||
| if len(tokens) != 6 || tokens[0] != "projects" || tokens[2] != "locations" || tokens[4] != "datasets" { | ||
| return nil, "", fmt.Errorf("format of BigQueryDataset external=%q was not known (use projects/<projectId>/locations/<location>/datasets/<datasetID>)", external) | ||
| } | ||
| parent = &BigQueryDatasetParent{ | ||
| ProjectID: tokens[1], | ||
| Location: tokens[3], | ||
| } | ||
| resourceID = tokens[5] | ||
| return parent, resourceID, nil | ||
| } | ||
|
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| func valueOf[T any](t *T) T { | ||
| var zeroVal T | ||
| if t == nil { | ||
| return zeroVal | ||
| } | ||
| return *t | ||
| } |
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