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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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6
plugin/kubernetes/object/object.go
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@@ -16,14 +16,18 @@
package object
import (
"k8s.io/apimachinery/pkg/apis/meta/v1"
v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/tools/cache"
)
// ToFunc converts one empty interface to another.
type ToFunc func(interface{}) interface{}
// ProcessorBuilder returns function to process cache events.
type ProcessorBuilder func(cache.Indexer, cache.ResourceEventHandler) cache.ProcessFunc
// Empty is an empty struct.
type Empty struct{}