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kube-proxy: improve logging around network programming latency SLI.

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This commit is contained in:
Janek Łukaszewicz
2019-08-14 14:01:55 +02:00
parent 4ce69dd32e
commit c33be173bf
4 changed files with 36 additions and 29 deletions
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18
pkg/proxy/endpoints.go
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@@ -25,7 +25,7 @@ import (
"k8s.io/klog"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/client-go/tools/record"
@@ -197,14 +197,15 @@ type UpdateEndpointMapResult struct {
StaleServiceNames []ServicePortName
// List of the trigger times for all endpoints objects that changed. It's used to export the
// network programming latency.
LastChangeTriggerTimes []time.Time
// NOTE(oxddr): this can be simplified to []time.Time if memory consumption becomes an issue.
LastChangeTriggerTimes map[types.NamespacedName][]time.Time
}
// UpdateEndpointsMap updates endpointsMap base on the given changes.
func (em EndpointsMap) Update(changes *EndpointChangeTracker) (result UpdateEndpointMapResult) {
result.StaleEndpoints = make([]ServiceEndpoint, 0)
result.StaleServiceNames = make([]ServicePortName, 0)
result.LastChangeTriggerTimes = make([]time.Time, 0)
result.LastChangeTriggerTimes = make(map[types.NamespacedName][]time.Time)
em.apply(
changes, &result.StaleEndpoints, &result.StaleServiceNames, &result.LastChangeTriggerTimes)
@@ -287,7 +288,7 @@ func (ect *EndpointChangeTracker) endpointsToEndpointsMap(endpoints *v1.Endpoint
// In addition it returns (via argument) and resets the lastChangeTriggerTimes for all endpoints
// that were changed and will result in syncing the proxy rules.
func (em EndpointsMap) apply(changes *EndpointChangeTracker, staleEndpoints *[]ServiceEndpoint,
staleServiceNames *[]ServicePortName, lastChangeTriggerTimes *[]time.Time) {
staleServiceNames *[]ServicePortName, lastChangeTriggerTimes *map[types.NamespacedName][]time.Time) {
if changes == nil {
return
}
@@ -300,8 +301,13 @@ func (em EndpointsMap) apply(changes *EndpointChangeTracker, staleEndpoints *[]S
}
changes.items = make(map[types.NamespacedName]*endpointsChange)
metrics.EndpointChangesPending.Set(0)
for _, lastChangeTriggerTime := range changes.lastChangeTriggerTimes {
*lastChangeTriggerTimes = append(*lastChangeTriggerTimes, lastChangeTriggerTime...)
for k, v := range changes.lastChangeTriggerTimes {
prev, ok := (*lastChangeTriggerTimes)[k]
if !ok {
(*lastChangeTriggerTimes)[k] = v
} else {
(*lastChangeTriggerTimes)[k] = append(prev, v...)
}
}
changes.lastChangeTriggerTimes = make(map[types.NamespacedName][]time.Time)
}