diff options
Diffstat (limited to 'src/kube2msb/vendor/k8s.io/kubernetes/pkg/client/metrics')
-rw-r--r-- | src/kube2msb/vendor/k8s.io/kubernetes/pkg/client/metrics/metrics.go | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/kube2msb/vendor/k8s.io/kubernetes/pkg/client/metrics/metrics.go b/src/kube2msb/vendor/k8s.io/kubernetes/pkg/client/metrics/metrics.go new file mode 100644 index 0000000..53029b5 --- /dev/null +++ b/src/kube2msb/vendor/k8s.io/kubernetes/pkg/client/metrics/metrics.go @@ -0,0 +1,67 @@ +/* +Copyright 2015 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 provides utilities for registering client metrics to Prometheus. +package metrics + +import ( + "sync" + "time" + + "github.com/prometheus/client_golang/prometheus" +) + +const restClientSubsystem = "rest_client" + +var ( + // RequestLatency is a Prometheus Summary metric type partitioned by + // "verb" and "url" labels. It is used for the rest client latency metrics. + RequestLatency = prometheus.NewSummaryVec( + prometheus.SummaryOpts{ + Subsystem: restClientSubsystem, + Name: "request_latency_microseconds", + Help: "Request latency in microseconds. Broken down by verb and URL", + MaxAge: time.Hour, + }, + []string{"verb", "url"}, + ) + + RequestResult = prometheus.NewCounterVec( + prometheus.CounterOpts{ + Subsystem: restClientSubsystem, + Name: "request_status_codes", + Help: "Number of http requests, partitioned by metadata", + }, + []string{"code", "method", "host"}, + ) +) + +var registerMetrics sync.Once + +// Register registers all metrics to Prometheus with +// respect to the RequestLatency. +func Register() { + // Register the metrics. + registerMetrics.Do(func() { + prometheus.MustRegister(RequestLatency) + prometheus.MustRegister(RequestResult) + }) +} + +// Calculates the time since the specified start in microseconds. +func SinceInMicroseconds(start time.Time) float64 { + return float64(time.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds()) +} |