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https://github.com/coredns/coredns.git
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aacb91ef0b
Remove the intermediate step of gathering everyhing in a kPod and kService and extracting the msg.Service from there. Now findPods and findServices return []msg.Service. This cuts down on the code and also removed the double looping of finding the data we need, so it should be faster.
44 lines
1.3 KiB
Go
44 lines
1.3 KiB
Go
package kubernetes
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import (
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"strings"
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"github.com/coredns/coredns/middleware/etcd/msg"
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"github.com/coredns/coredns/request"
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)
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// The federation node.Labels keys used.
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const (
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// TODO: Do not hardcode these labels. Pull them out of the API instead.
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//
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// We can get them via ....
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// import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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// metav1.LabelZoneFailureDomain
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// metav1.LabelZoneRegion
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//
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// But importing above breaks coredns with flag collision of 'log_dir'
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LabelZone = "failure-domain.beta.kubernetes.io/zone"
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LabelRegion = "failure-domain.beta.kubernetes.io/region"
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)
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// Federations is used from the federations middleware to return the service that should be
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// returned as a CNAME for federation(s) to work.
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func (k *Kubernetes) Federations(state request.Request, fname, fzone string) (msg.Service, error) {
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nodeName := k.localNodeName()
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node, err := k.APIConn.GetNodeByName(nodeName)
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if err != nil {
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return msg.Service{}, err
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}
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r, err := parseRequest(state)
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lz := node.Labels[LabelZone]
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lr := node.Labels[LabelRegion]
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if r.endpoint == "" {
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return msg.Service{Host: strings.Join([]string{r.service, r.namespace, fname, r.podOrSvc, lz, lr, fzone}, ".")}, nil
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}
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return msg.Service{Host: strings.Join([]string{r.endpoint, r.service, r.namespace, fname, r.podOrSvc, lz, lr, fzone}, ".")}, nil
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}
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