git subrepo clone (merge) https://github.com/kubernetes-incubator/metrics-server.git metrics-server
subrepo:
subdir: "metrics-server"
merged: "92d8412"
upstream:
origin: "https://github.com/kubernetes-incubator/metrics-server.git"
branch: "master"
commit: "92d8412"
git-subrepo:
version: "0.4.0"
origin: "???"
commit: "???"
diff --git a/metrics-server/vendor/k8s.io/apiserver/pkg/audit/metrics.go b/metrics-server/vendor/k8s.io/apiserver/pkg/audit/metrics.go
new file mode 100644
index 0000000..10280e0
--- /dev/null
+++ b/metrics-server/vendor/k8s.io/apiserver/pkg/audit/metrics.go
@@ -0,0 +1,87 @@
+/*
+Copyright 2017 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 audit
+
+import (
+ "fmt"
+
+ "github.com/golang/glog"
+ "github.com/prometheus/client_golang/prometheus"
+ auditinternal "k8s.io/apiserver/pkg/apis/audit"
+)
+
+const (
+ subsystem = "apiserver_audit"
+)
+
+var (
+ eventCounter = prometheus.NewCounter(
+ prometheus.CounterOpts{
+ Subsystem: subsystem,
+ Name: "event_total",
+ Help: "Counter of audit events generated and sent to the audit backend.",
+ })
+ errorCounter = prometheus.NewCounterVec(
+ prometheus.CounterOpts{
+ Subsystem: subsystem,
+ Name: "error_total",
+ Help: "Counter of audit events that failed to be audited properly. " +
+ "Plugin identifies the plugin affected by the error.",
+ },
+ []string{"plugin"},
+ )
+ levelCounter = prometheus.NewCounterVec(
+ prometheus.CounterOpts{
+ Subsystem: subsystem,
+ Name: "level_total",
+ Help: "Counter of policy levels for audit events (1 per request).",
+ },
+ []string{"level"},
+ )
+)
+
+func init() {
+ prometheus.MustRegister(eventCounter)
+ prometheus.MustRegister(errorCounter)
+ prometheus.MustRegister(levelCounter)
+}
+
+// ObserveEvent updates the relevant prometheus metrics for the generated audit event.
+func ObserveEvent() {
+ eventCounter.Inc()
+}
+
+// ObservePolicyLevel updates the relevant prometheus metrics with the audit level for a request.
+func ObservePolicyLevel(level auditinternal.Level) {
+ levelCounter.WithLabelValues(string(level)).Inc()
+}
+
+// HandlePluginError handles an error that occurred in an audit plugin. This method should only be
+// used if the error may have prevented the audit event from being properly recorded. The events are
+// logged to the debug log.
+func HandlePluginError(plugin string, err error, impacted ...*auditinternal.Event) {
+ // Count the error.
+ errorCounter.WithLabelValues(plugin).Add(float64(len(impacted)))
+
+ // Log the audit events to the debug log.
+ msg := fmt.Sprintf("Error in audit plugin '%s' affecting %d audit events: %v\nImpacted events:\n",
+ plugin, len(impacted), err)
+ for _, ev := range impacted {
+ msg = msg + EventString(ev) + "\n"
+ }
+ glog.Error(msg)
+}