mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2025-03-31 04:04:51 +00:00
93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
/*
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Copyright 2020 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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"fmt"
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"log"
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"sigs.k8s.io/node-feature-discovery/source"
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"sigs.k8s.io/node-feature-discovery/source/custom/rules"
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)
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// Custom Features Configurations
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type MatchRule struct {
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PciId *rules.PciIdRule `json:"pciId,omitempty""`
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LoadedKMod *rules.LoadedKModRule `json:"loadedKMod,omitempty""`
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}
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type CustomFeature struct {
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Name string `json:"name"`
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MatchOn []MatchRule `json:"matchOn"`
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}
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type NFDConfig []CustomFeature
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var Config = NFDConfig{}
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// Implements FeatureSource Interface
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type Source struct{}
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// Return name of the feature source
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func (s Source) Name() string { return "custom" }
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// Discover features
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func (s Source) Discover() (source.Features, error) {
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features := source.Features{}
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allFeatureConfig := append(getStaticFeatureConfig(), Config...)
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log.Printf("INFO: Custom features: %+v", allFeatureConfig)
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// Iterate over features
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for _, customFeature := range allFeatureConfig {
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featureExist, err := s.discoverFeature(customFeature)
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if err != nil {
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return features, fmt.Errorf("failed to discover feature: %s. %s", customFeature.Name, err.Error())
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}
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if featureExist {
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features[customFeature.Name] = true
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}
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}
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return features, nil
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}
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// Process a single feature by Matching on the defined rules.
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// A feature is present if all defined Rules in a MatchRule return a match.
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func (s Source) discoverFeature(feature CustomFeature) (bool, error) {
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for _, rule := range feature.MatchOn {
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// PCI ID rule
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if rule.PciId != nil {
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match, err := rule.PciId.Match()
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if err != nil {
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return false, err
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}
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if !match {
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continue
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}
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}
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// Loaded kernel module rule
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if rule.LoadedKMod != nil {
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match, err := rule.LoadedKMod.Match()
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if err != nil {
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return false, err
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}
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if !match {
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continue
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}
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}
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return true, nil
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}
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return false, nil
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}
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