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node_informer.go
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/
node_informer.go
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package watcher
import (
"github.com/rs/zerolog/log"
api "k8s.io/api/core/v1"
"k8s.io/client-go/informers"
"k8s.io/client-go/tools/cache"
"github.com/iLert/ilert-kube-agent/pkg/config"
)
var nodeInformerStopper chan struct{}
func startNodeInformer(cfg *config.Config) {
factory := informers.NewSharedInformerFactory(cfg.KubeClient, 0)
nodeInformer := factory.Core().V1().Nodes().Informer()
nodeInformerStopper = make(chan struct{})
nodeInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
UpdateFunc: func(oldObj interface{}, newObj interface{}) {
node := newObj.(*api.Node)
log.Debug().Interface("node_name", node.GetName()).Msg("Update Node")
analyzeNodeStatus(node, cfg)
},
})
log.Info().Msg("Starting node informer")
nodeInformer.Run(nodeInformerStopper)
}
func stopNodeInformer() {
if nodeInformerStopper != nil {
log.Info().Msg("Stopping node informer")
close(nodeInformerStopper)
}
}