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These metrics can provide insights into ResourceClaim usage. The total count is redundant because the apiserver also provides count of resources, but having it in the same sub-system next to the count of allocated claims might be more discoverable and helps monitor the controller itself.
77 lines
2.5 KiB
Go
77 lines
2.5 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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// ResourceClaimSubsystem - subsystem name used for ResourceClaim creation
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const ResourceClaimSubsystem = "resourceclaim_controller"
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var (
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// ResourceClaimCreateAttempts tracks the number of
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// ResourceClaims().Create calls (both successful and unsuccessful)
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ResourceClaimCreateAttempts = metrics.NewCounter(
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&metrics.CounterOpts{
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Subsystem: ResourceClaimSubsystem,
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Name: "create_attempts_total",
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Help: "Number of ResourceClaims creation requests",
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StabilityLevel: metrics.ALPHA,
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})
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// ResourceClaimCreateFailures tracks the number of unsuccessful
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// ResourceClaims().Create calls
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ResourceClaimCreateFailures = metrics.NewCounter(
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&metrics.CounterOpts{
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Subsystem: ResourceClaimSubsystem,
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Name: "create_failures_total",
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Help: "Number of ResourceClaims creation request failures",
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StabilityLevel: metrics.ALPHA,
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})
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// NumResourceClaims tracks the current number of ResourceClaims.
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NumResourceClaims = metrics.NewGauge(
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&metrics.GaugeOpts{
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Subsystem: ResourceClaimSubsystem,
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Name: "resource_claims",
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Help: "Number of ResourceClaims",
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StabilityLevel: metrics.ALPHA,
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})
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// NumAllocatedResourceClaims tracks the current number of allocated ResourceClaims.
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NumAllocatedResourceClaims = metrics.NewGauge(
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&metrics.GaugeOpts{
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Subsystem: ResourceClaimSubsystem,
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Name: "allocated_resource_claims",
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Help: "Number of allocated ResourceClaims",
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StabilityLevel: metrics.ALPHA,
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})
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)
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var registerMetrics sync.Once
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// RegisterMetrics registers ResourceClaim metrics.
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func RegisterMetrics() {
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registerMetrics.Do(func() {
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legacyregistry.MustRegister(ResourceClaimCreateAttempts)
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legacyregistry.MustRegister(ResourceClaimCreateFailures)
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legacyregistry.MustRegister(NumResourceClaims)
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legacyregistry.MustRegister(NumAllocatedResourceClaims)
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})
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}
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