| /* |
| 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 metrics |
| |
| import ( |
| "sync" |
| "time" |
| |
| "github.com/prometheus/client_golang/prometheus" |
| ) |
| |
| const ( |
| // NetworkPluginOperationsKey is the key for operation count metrics. |
| NetworkPluginOperationsKey = "network_plugin_operations" |
| // NetworkPluginOperationsLatencyKey is the key for the operation latency metrics. |
| NetworkPluginOperationsLatencyKey = "network_plugin_operations_latency_microseconds" |
| |
| // Keep the "kubelet" subsystem for backward compatibility. |
| kubeletSubsystem = "kubelet" |
| ) |
| |
| var ( |
| // NetworkPluginOperationsLatency collects operation latency numbers by operation |
| // type. |
| NetworkPluginOperationsLatency = prometheus.NewSummaryVec( |
| prometheus.SummaryOpts{ |
| Subsystem: kubeletSubsystem, |
| Name: NetworkPluginOperationsLatencyKey, |
| Help: "Latency in microseconds of network plugin operations. Broken down by operation type.", |
| }, |
| []string{"operation_type"}, |
| ) |
| ) |
| |
| var registerMetrics sync.Once |
| |
| // Register all metrics. |
| func Register() { |
| registerMetrics.Do(func() { |
| prometheus.MustRegister(NetworkPluginOperationsLatency) |
| }) |
| } |
| |
| // SinceInMicroseconds gets the time since the specified start in microseconds. |
| func SinceInMicroseconds(start time.Time) float64 { |
| return float64(time.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds()) |
| } |