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As discussed during the production readiness review, a metric for the PVC create operations is useful. The "ephemeral_volume" workqueue metrics were already added in the initial implementation. The new code follows the example set by the endpoints controller.
54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
/*
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Copyright 2021 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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"sync"
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"k8s.io/component-base/metrics"
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"k8s.io/component-base/metrics/legacyregistry"
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)
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// EphemeralVolumeSubsystem - subsystem name used for Endpoint Slices.
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const EphemeralVolumeSubsystem = "ephemeral_volume_controller"
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var (
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// EphemeralVolumeCreate tracks the number of
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// PersistentVolumeClaims().Create calls for each failure
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// reason
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// (https://pkg.go.dev/k8s.io/apimachinery@v0.20.2/pkg/apis/meta/v1#StatusReason),
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// with empty for successful calls.
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EphemeralVolumeCreate = metrics.NewCounterVec(
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&metrics.CounterOpts{
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Subsystem: EphemeralVolumeSubsystem,
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Name: "create",
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Help: "Number of PersistenVolumeClaims creation requests",
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StabilityLevel: metrics.ALPHA,
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},
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[]string{"reason"},
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)
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)
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var registerMetrics sync.Once
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// RegisterMetrics registers EphemeralVolume metrics.
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func RegisterMetrics() {
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registerMetrics.Do(func() {
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legacyregistry.MustRegister(EphemeralVolumeCreate)
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})
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}
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