[VOL-3678] First implementation of the BBSim-sadis-server
Change-Id: I5077a8f861f4cc6af9759f31a4a415042c05eba3
diff --git a/vendor/k8s.io/client-go/plugin/pkg/client/auth/exec/metrics.go b/vendor/k8s.io/client-go/plugin/pkg/client/auth/exec/metrics.go
new file mode 100644
index 0000000..caf0cca
--- /dev/null
+++ b/vendor/k8s.io/client-go/plugin/pkg/client/auth/exec/metrics.go
@@ -0,0 +1,60 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package exec
+
+import (
+ "sync"
+ "time"
+
+ "k8s.io/client-go/tools/metrics"
+)
+
+type certificateExpirationTracker struct {
+ mu sync.RWMutex
+ m map[*Authenticator]time.Time
+ metricSet func(*time.Time)
+}
+
+var expirationMetrics = &certificateExpirationTracker{
+ m: map[*Authenticator]time.Time{},
+ metricSet: func(e *time.Time) {
+ metrics.ClientCertExpiry.Set(e)
+ },
+}
+
+// set stores the given expiration time and updates the updates the certificate
+// expiry metric to the earliest expiration time.
+func (c *certificateExpirationTracker) set(a *Authenticator, t time.Time) {
+ c.mu.Lock()
+ defer c.mu.Unlock()
+ c.m[a] = t
+
+ earliest := time.Time{}
+ for _, t := range c.m {
+ if t.IsZero() {
+ continue
+ }
+ if earliest.IsZero() || earliest.After(t) {
+ earliest = t
+ }
+ }
+ if earliest.IsZero() {
+ c.metricSet(nil)
+ } else {
+ c.metricSet(&earliest)
+ }
+}