mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2024-12-14 11:57:51 +00:00
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
/*
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Copyright 2021 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package custom
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"k8s.io/klog/v2"
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"sigs.k8s.io/yaml"
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)
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// Directory stores the full path for the custom sources folder
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const Directory = "/etc/kubernetes/node-feature-discovery/custom.d"
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// getDirectoryFeatureConfig returns features configured in the "/etc/kubernetes/node-feature-discovery/custom.d"
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// host directory and its 1st level subdirectories, which can be populated e.g. by ConfigMaps
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func getDirectoryFeatureConfig() []FeatureSpec {
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features := readDir(Directory, true)
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klog.V(1).Infof("all configmap based custom feature specs: %+v", features)
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return features
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}
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func readDir(dirName string, recursive bool) []FeatureSpec {
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features := make([]FeatureSpec, 0)
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klog.V(1).Infof("getting files in %s", dirName)
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files, err := ioutil.ReadDir(dirName)
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if err != nil {
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if os.IsNotExist(err) {
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klog.V(1).Infof("custom config directory %q does not exist", dirName)
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} else {
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klog.Errorf("unable to access custom config directory %q, %v", dirName, err)
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}
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return features
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}
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for _, file := range files {
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fileName := filepath.Join(dirName, file.Name())
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if file.IsDir() {
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if recursive {
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klog.V(1).Infof("processing dir %q", fileName)
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features = append(features, readDir(fileName, false)...)
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} else {
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klog.V(2).Infof("skipping dir %q", fileName)
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}
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continue
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}
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if strings.HasPrefix(file.Name(), ".") {
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klog.V(2).Infof("skipping hidden file %q", fileName)
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continue
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}
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klog.V(2).Infof("processing file %q", fileName)
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bytes, err := ioutil.ReadFile(fileName)
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if err != nil {
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klog.Errorf("could not read custom config file %q, %v", fileName, err)
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continue
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}
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klog.V(2).Infof("custom config rules raw: %s", string(bytes))
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config := &[]FeatureSpec{}
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err = yaml.UnmarshalStrict(bytes, config)
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if err != nil {
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klog.Errorf("could not parse custom config file %q, %v", fileName, err)
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continue
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}
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features = append(features, *config...)
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}
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return features
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}
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