mirror of https://github.com/k3s-io/k3s
73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"github.com/prometheus/client_golang/prometheus"
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)
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// MetricRecorder represents a metric recorder which takes action when the
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// metric Inc(), Dec() and Clear()
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type MetricRecorder interface {
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Inc()
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Dec()
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Clear()
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}
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var _ MetricRecorder = &PendingPodsRecorder{}
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// PendingPodsRecorder is an implementation of MetricRecorder
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type PendingPodsRecorder struct {
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recorder prometheus.Gauge
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}
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// NewActivePodsRecorder returns ActivePods in a Prometheus metric fashion
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func NewActivePodsRecorder() *PendingPodsRecorder {
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return &PendingPodsRecorder{
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recorder: ActivePods,
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}
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}
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// NewUnschedulablePodsRecorder returns UnschedulablePods in a Prometheus metric fashion
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func NewUnschedulablePodsRecorder() *PendingPodsRecorder {
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return &PendingPodsRecorder{
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recorder: UnschedulablePods,
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}
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}
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// NewBackoffPodsRecorder returns BackoffPods in a Prometheus metric fashion
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func NewBackoffPodsRecorder() *PendingPodsRecorder {
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return &PendingPodsRecorder{
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recorder: BackoffPods,
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}
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}
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// Inc increases a metric counter by 1, in an atomic way
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func (r *PendingPodsRecorder) Inc() {
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r.recorder.Inc()
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}
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// Dec decreases a metric counter by 1, in an atomic way
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func (r *PendingPodsRecorder) Dec() {
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r.recorder.Dec()
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}
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// Clear set a metric counter to 0, in an atomic way
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func (r *PendingPodsRecorder) Clear() {
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r.recorder.Set(float64(0))
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}
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