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6cc3f47d46
* middleware/authpath: Fix return from k8s mw Return the correct search path from the kubernetes' AutoPath function. Based on preliminary discussion in #870 * PodWithIP can be private Fix and add docs to functions. * CR: remove the error from AutoPathFunc
54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
package kubernetes
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import (
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"github.com/coredns/coredns/middleware"
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"github.com/coredns/coredns/request"
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"k8s.io/client-go/1.5/pkg/api"
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)
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// AutoPath implements the AutoPathFunc call from the autopath middleware.
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// It returns a per-query search path or nil indicating no searchpathing should happen.
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func (k *Kubernetes) AutoPath(state request.Request) []string {
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// Check if the query falls in a zone we are actually authoriative for and thus if we want autopath.
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zone := middleware.Zones(k.Zones).Matches(state.Name())
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if zone == "" {
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return nil
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}
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ip := state.IP()
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pod := k.podWithIP(ip)
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if pod == nil {
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return nil
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}
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search := make([]string, 3)
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if zone == "." {
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search[0] = pod.Namespace + ".svc."
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search[1] = "svc."
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search[2] = "."
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} else {
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search[0] = pod.Namespace + ".svc." + zone
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search[1] = "svc." + zone
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search[2] = zone
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}
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search = append(search, k.autoPathSearch...)
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search = append(search, "") // sentinal
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return search
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}
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// podWithIP return the api.Pod for source IP ip. It returns nil if nothing can be found.
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func (k *Kubernetes) podWithIP(ip string) (p *api.Pod) {
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objList := k.APIConn.PodIndex(ip)
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for _, o := range objList {
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p, ok := o.(*api.Pod)
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if !ok {
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return nil
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}
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return p
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}
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return nil
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}
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