-
Notifications
You must be signed in to change notification settings - Fork 635
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: Evan Lezar <[email protected]>
- Loading branch information
Showing
2 changed files
with
184 additions
and
143 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| /** | ||
| # Copyright 2024 NVIDIA 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 lm | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| apiequality "k8s.io/apimachinery/pkg/api/equality" | ||
| "k8s.io/apimachinery/pkg/api/errors" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/klog/v2" | ||
| nfdv1alpha1 "sigs.k8s.io/node-feature-discovery/pkg/apis/nfd/v1alpha1" | ||
| nfdclientset "sigs.k8s.io/node-feature-discovery/pkg/generated/clientset/versioned" | ||
|
|
||
| "github.com/NVIDIA/k8s-device-plugin/internal/flags" | ||
| ) | ||
|
|
||
| // Outputer defines a mechanism to output labels. | ||
| type Outputer interface { | ||
| Output(Labels) error | ||
| } | ||
|
|
||
| func ToFile(path string) Outputer { | ||
| if path == "" { | ||
| return &toWriter{os.Stdout} | ||
| } | ||
|
|
||
| o := toFile(path) | ||
| return &o | ||
| } | ||
|
|
||
| // toFile writes to the specified file. | ||
| type toFile string | ||
|
|
||
| // toWriter writes to the specified writer | ||
| type toWriter struct { | ||
| io.Writer | ||
| } | ||
|
|
||
| func (path *toFile) Output(labels Labels) error { | ||
| klog.Infof("Writing labels to output file %v", *path) | ||
|
|
||
| buffer := new(bytes.Buffer) | ||
| output := &toWriter{buffer} | ||
| if err := output.Output(labels); err != nil { | ||
| return fmt.Errorf("error writing labels to buffer: %v", err) | ||
| } | ||
| err := writeFileAtomically(string(*path), buffer.Bytes(), 0644) | ||
| if err != nil { | ||
| return fmt.Errorf("error atomically writing file '%s': %w", *path, err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (output *toWriter) Output(labels Labels) error { | ||
| for k, v := range labels { | ||
| _, err := fmt.Fprintf(output, "%s=%s\n", k, v) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func writeFileAtomically(path string, contents []byte, perm os.FileMode) error { | ||
| absPath, err := filepath.Abs(path) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to retrieve absolute path of output file: %v", err) | ||
| } | ||
|
|
||
| absDir := filepath.Dir(absPath) | ||
| tmpDir := filepath.Join(absDir, "gfd-tmp") | ||
|
|
||
| err = os.MkdirAll(tmpDir, os.ModePerm) | ||
| if err != nil && !os.IsExist(err) { | ||
| return fmt.Errorf("failed to create temporary directory: %v", err) | ||
| } | ||
| defer func() { | ||
| if err != nil { | ||
| os.RemoveAll(tmpDir) | ||
| } | ||
| }() | ||
|
|
||
| tmpFile, err := os.CreateTemp(tmpDir, "gfd-") | ||
| if err != nil { | ||
| return fmt.Errorf("fail to create temporary output file: %v", err) | ||
| } | ||
| defer func() { | ||
| if err != nil { | ||
| tmpFile.Close() | ||
| os.Remove(tmpFile.Name()) | ||
| } | ||
| }() | ||
|
|
||
| err = os.WriteFile(tmpFile.Name(), contents, perm) | ||
| if err != nil { | ||
| return fmt.Errorf("error writing temporary file '%v': %v", tmpFile.Name(), err) | ||
| } | ||
|
|
||
| err = os.Rename(tmpFile.Name(), path) | ||
| if err != nil { | ||
| return fmt.Errorf("error moving temporary file to '%v': %v", path, err) | ||
| } | ||
|
|
||
| err = os.Chmod(path, perm) | ||
| if err != nil { | ||
| return fmt.Errorf("error setting permissions on '%v': %v", path, err) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| const nodeFeatureVendorPrefix = "nvidia-features-for" | ||
|
|
||
| type nodeFeatureObject struct { | ||
| nodeConfig flags.NodeConfig | ||
| nfdClientset nfdclientset.Interface | ||
| } | ||
|
|
||
| // UpdateNodeFeatureObject creates/updates the node-specific NodeFeature custom resource. | ||
| func (n *nodeFeatureObject) Output(labels Labels) error { | ||
| nodename := n.nodeConfig.Name | ||
| namespace := n.nodeConfig.Namespace | ||
| nodeFeatureName := strings.Join([]string{nodeFeatureVendorPrefix, nodename}, "-") | ||
|
|
||
| if nfr, err := n.nfdClientset.NfdV1alpha1().NodeFeatures(namespace).Get(context.TODO(), nodeFeatureName, metav1.GetOptions{}); errors.IsNotFound(err) { | ||
| klog.Infof("creating NodeFeature object %s", nodeFeatureName) | ||
| nfr = &nfdv1alpha1.NodeFeature{ | ||
| TypeMeta: metav1.TypeMeta{}, | ||
| ObjectMeta: metav1.ObjectMeta{Name: nodeFeatureName, Labels: map[string]string{nfdv1alpha1.NodeFeatureObjNodeNameLabel: nodename}}, | ||
| Spec: nfdv1alpha1.NodeFeatureSpec{Features: *nfdv1alpha1.NewFeatures(), Labels: labels}, | ||
| } | ||
|
|
||
| nfrCreated, err := n.nfdClientset.NfdV1alpha1().NodeFeatures(namespace).Create(context.TODO(), nfr, metav1.CreateOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to create NodeFeature object %q: %w", nfr.Name, err) | ||
| } | ||
|
|
||
| klog.Infof("NodeFeature object created: %v", nfrCreated) | ||
| } else if err != nil { | ||
| return fmt.Errorf("failed to get NodeFeature object: %w", err) | ||
| } else { | ||
| nfrUpdated := nfr.DeepCopy() | ||
| nfrUpdated.Labels = map[string]string{nfdv1alpha1.NodeFeatureObjNodeNameLabel: nodename} | ||
| nfrUpdated.Spec = nfdv1alpha1.NodeFeatureSpec{Features: *nfdv1alpha1.NewFeatures(), Labels: labels} | ||
|
|
||
| if !apiequality.Semantic.DeepEqual(nfr, nfrUpdated) { | ||
| klog.Infof("updating NodeFeature object %s", nodeFeatureName) | ||
| nfrUpdated, err = n.nfdClientset.NfdV1alpha1().NodeFeatures(namespace).Update(context.TODO(), nfrUpdated, metav1.UpdateOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to update NodeFeature object %q: %w", nfr.Name, err) | ||
| } | ||
| klog.Infof("NodeFeature object updated: %v", nfrUpdated) | ||
| } else { | ||
| klog.Infof("no changes in NodeFeature object, not updating") | ||
| } | ||
| } | ||
| return nil | ||
| } |