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Admission Control: validate path #11
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| Copyright 2024 IBM Corporation. | ||
| | ||
| 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. | ||
| */ | ||
| | ||
| package controller | ||
| | ||
| import ( | ||
| "fmt" | ||
| "strings" | ||
| | ||
| v1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| ) | ||
| | ||
| // getPodTemplateSpec parses raw as JSON and extracts a Kueue-compatible PodTemplateSpec at the given path within it | ||
| func getPodTemplateSpec(raw []byte, path string) (*v1.PodTemplateSpec, error) { | ||
| obj := &unstructured.Unstructured{} | ||
| if _, _, err := unstructured.UnstructuredJSONScheme.Decode(raw, nil, obj); err != nil { | ||
| return nil, err | ||
| } | ||
| | ||
| // Walk down the path | ||
| parts := strings.Split(path, ".") | ||
| p := obj.UnstructuredContent() | ||
| var ok bool | ||
| for i := 1; i < len(parts); i++ { | ||
| p, ok = p[parts[i]].(map[string]interface{}) | ||
| if !ok { | ||
| return nil, fmt.Errorf("path element %v not found (segment %v of %v)", parts[i], i, len(parts)) | ||
| } | ||
| } | ||
| | ||
| // Extract the PodSpec that should be at candidatePTS.spec | ||
| candidatePTS := p | ||
| spec, ok := candidatePTS["spec"].(map[string]interface{}) | ||
| if !ok { | ||
| return nil, fmt.Errorf("content at %v does not contain a spec", path) | ||
| } | ||
| podSpec := &v1.PodSpec{} | ||
| if err := runtime.DefaultUnstructuredConverter.FromUnstructuredWithValidation(spec, podSpec, true); err != nil { | ||
| return nil, fmt.Errorf("content at %v.spec not parseable as a v1.PodSpec: %w", path, err) | ||
| } | ||
| | ||
| // Construct the filtered PodTemplateSpec, copying only the metadata expected by Kueue | ||
| template := &v1.PodTemplateSpec{Spec: *podSpec} | ||
| if metadata, ok := candidatePTS["metadata"].(map[string]interface{}); ok { | ||
| if labels, ok := metadata["labels"].(map[string]string); ok { | ||
| template.ObjectMeta.Labels = labels | ||
| } | ||
| if annotations, ok := metadata["annotations"].(map[string]string); ok { | ||
| template.ObjectMeta.Annotations = annotations | ||
| } | ||
| } | ||
| | ||
| return template, nil | ||
| } |
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