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Measure and expose DNS programming latency from Kubernetes plugin. (#3171)

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For now metric is measure only for headless services. Informer has been slighlty
refactored, so the code can measure latency without storing extra fields on
Endpoint struct.

Signed-off-by: Janek Łukaszewicz <janluk@google.com>

Suggestions from code review

Co-Authored-By: Chris O'Haver <cohaver@infoblox.com>
This commit is contained in:
janluk
2019-10-04 17:48:43 +02:00
committed by Miek Gieben
parent 03ea2ae955
commit d7cdb992b4
11 changed files with 330 additions and 37 deletions
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8
plugin/kubernetes/object/endpoint.go
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@@ -44,10 +44,10 @@ type EndpointPort struct {
func EndpointsKey(name, namespace string) string { return name + "." + namespace }
// ToEndpoints converts an api.Endpoints to a *Endpoints.
func ToEndpoints(obj interface{}) interface{} {
func ToEndpoints(obj interface{}) (*api.Endpoints, *Endpoints) {
end, ok := obj.(*api.Endpoints)
if !ok {
return nil
return nil, nil
}
e := &Endpoints{
@@ -93,9 +93,7 @@ func ToEndpoints(obj interface{}) interface{} {
}
}
*end = api.Endpoints{}
return e
return end, e
}
// CopyWithoutSubsets copies e, without the subsets.