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Add new plugin: external - resolve k8s ingress and LB address with external names (#2379)

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* Add new plugin: external

This plugin works in conjunction with the kubernetes plugin and exports
ingress and LB addresses as DNS records. It bypasses backend.go and
backend_lookup.go flow because it is not needed.

README, tests are implemented. The tests only exercise the unit tests,
this has not been tested in any ci.

Signed-off-by: Miek Gieben <miek@miek.nl>

* Rename to k8s_external

Signed-off-by: Miek Gieben <miek@miek.nl>

* go gen

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben 2018-12-14 09:41:51 +00:00 • committed by GitHub
parent d9880681c3
commit c1c98924c3
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17 changed files with 1156 additions and 1 deletions
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12
plugin/kubernetes/object/service.go
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@ -16,6 +16,9 @@ type Service struct {
ExternalName string
Ports []api.ServicePort
// ExternalIPs we may want to export.
ExternalIPs []string
*Empty
}
@ -37,6 +40,8 @@ func ToService(obj interface{}) interface{} {
ClusterIP: svc.Spec.ClusterIP,
Type: svc.Spec.Type,
ExternalName: svc.Spec.ExternalName,
ExternalIPs: make([]string, len(svc.Status.LoadBalancer.Ingress)+len(svc.Spec.ExternalIPs)),
}
if len(svc.Spec.Ports) == 0 {
@ -47,6 +52,11 @@ func ToService(obj interface{}) interface{} {
copy(s.Ports, svc.Spec.Ports)
}
li := copy(s.ExternalIPs, svc.Spec.ExternalIPs)
for i, lb := range svc.Status.LoadBalancer.Ingress {
s.ExternalIPs[li+i] = lb.IP
}
*svc = api.Service{}
return s
@ -65,8 +75,10 @@ func (s *Service) DeepCopyObject() runtime.Object {
Type: s.Type,
ExternalName: s.ExternalName,
Ports: make([]api.ServicePort, len(s.Ports)),
ExternalIPs: make([]string, len(s.ExternalIPs)),
}
copy(s1.Ports, s.Ports)
copy(s1.ExternalIPs, s.ExternalIPs)
return s1
}