66 lines
1.4 KiB
Go
66 lines
1.4 KiB
Go
package main
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import (
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"log"
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"git.k6n.net/go-cart-actor/pkg/actor"
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"git.k6n.net/go-cart-actor/pkg/checkout"
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"git.k6n.net/go-cart-actor/pkg/discovery"
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v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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)
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func GetDiscovery() discovery.Discovery {
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if podIp == "" {
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return nil
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}
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config, kerr := rest.InClusterConfig()
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if kerr != nil {
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log.Fatalf("Error creating kubernetes client: %v\n", kerr)
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}
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client, err := kubernetes.NewForConfig(config)
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if err != nil {
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log.Fatalf("Error creating client: %v\n", err)
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}
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timeout := int64(30)
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return discovery.NewK8sDiscovery(client, v1.ListOptions{
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LabelSelector: "actor-pool=checkout",
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TimeoutSeconds: &timeout,
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})
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}
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func UseDiscovery(pool actor.GrainPool[*checkout.CheckoutGrain]) {
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go func(hw discovery.Discovery) {
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if hw == nil {
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log.Print("No discovery service available")
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return
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}
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ch, err := hw.Watch()
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if err != nil {
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log.Printf("Discovery error: %v", err)
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return
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}
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for evt := range ch {
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if evt.Host == "" {
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continue
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}
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switch evt.IsReady {
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case false:
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if pool.IsKnown(evt.Host) {
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log.Printf("Host %s is not ready, removing", evt.Host)
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pool.RemoveHost(evt.Host)
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}
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default:
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if !pool.IsKnown(evt.Host) {
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log.Printf("Discovered host %s", evt.Host)
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pool.AddRemoteHost(evt.Host)
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}
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}
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}
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}(GetDiscovery())
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}
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