| /* |
| 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 winkernel |
| |
| import ( |
| "sync" |
| "time" |
| |
| "github.com/prometheus/client_golang/prometheus" |
| ) |
| |
| const kubeProxySubsystem = "kubeproxy" |
| |
| var ( |
| SyncProxyRulesLatency = prometheus.NewHistogram( |
| prometheus.HistogramOpts{ |
| Subsystem: kubeProxySubsystem, |
| Name: "sync_proxy_rules_latency_microseconds", |
| Help: "SyncProxyRules latency", |
| Buckets: prometheus.ExponentialBuckets(1000, 2, 15), |
| }, |
| ) |
| ) |
| |
| var registerMetricsOnce sync.Once |
| |
| func RegisterMetrics() { |
| registerMetricsOnce.Do(func() { |
| prometheus.MustRegister(SyncProxyRulesLatency) |
| }) |
| } |
| |
| // Gets the time since the specified start in microseconds. |
| func sinceInMicroseconds(start time.Time) float64 { |
| return float64(time.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds()) |
| } |