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metrics.go
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/
metrics.go
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// Copyright 2022 Intel Corporation. All Rights Reserved.
//
// 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 balloons
import (
"sort"
"strconv"
"strings"
"github.com/intel/cri-resource-manager/pkg/cri/resource-manager/policy"
"github.com/prometheus/client_golang/prometheus"
"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
)
// Prometheus Metric descriptor indices and descriptor table
const (
balloonsDesc = iota
)
var descriptors = []*prometheus.Desc{
balloonsDesc: prometheus.NewDesc(
"balloons",
"CPUs",
[]string{
"balloon_type",
"cpu_class",
"cpus_min",
"cpus_max",
"balloon",
"cpus",
"cpus_count",
"numas",
"numas_count",
"dies",
"dies_count",
"packages",
"packages_count",
"sharedidlecpus",
"sharedidlecpus_count",
"cpus_allowed",
"cpus_allowed_count",
"mems",
"containers",
"tot_req_millicpu",
}, nil,
),
}
// Metrics defines the balloons-specific metrics from policy level.
type Metrics struct {
Balloons []*BalloonMetrics
}
// BalloonMetrics define metrics of a balloon instance.
type BalloonMetrics struct {
// Balloon type metrics
DefName string
CpuClass string
MinCpus int
MaxCpus int
// Balloon instance metrics
PrettyName string
Cpus cpuset.CPUSet
CpusCount int
Numas []string
NumasCount int
Dies []string
DiesCount int
Packages []string
PackagesCount int
SharedIdleCpus cpuset.CPUSet
SharedIdleCpusCount int
CpusAllowed cpuset.CPUSet
CpusAllowedCount int
Mems string
ContainerNames string
ContainerReqMilliCpus int
}
// DescribeMetrics generates policy-specific prometheus metrics data
// descriptors.
func (p *balloons) DescribeMetrics() []*prometheus.Desc {
return descriptors
}
// PollMetrics provides policy metrics for monitoring.
func (p *balloons) PollMetrics() policy.Metrics {
policyMetrics := &Metrics{}
policyMetrics.Balloons = make([]*BalloonMetrics, len(p.balloons))
for index, bln := range p.balloons {
cpuLoc := p.cpuTree.CpuLocations(bln.Cpus)
bm := &BalloonMetrics{}
policyMetrics.Balloons[index] = bm
bm.DefName = bln.Def.Name
bm.CpuClass = bln.Def.CpuClass
bm.MinCpus = bln.Def.MinCpus
bm.MaxCpus = bln.Def.MaxCpus
bm.PrettyName = bln.PrettyName()
bm.Cpus = bln.Cpus
bm.CpusCount = bm.Cpus.Size()
if len(cpuLoc) > 3 {
bm.Numas = cpuLoc[3]
bm.NumasCount = len(bm.Numas)
bm.Dies = cpuLoc[2]
bm.DiesCount = len(bm.Dies)
bm.Packages = cpuLoc[1]
bm.PackagesCount = len(bm.Packages)
}
bm.SharedIdleCpus = bln.SharedIdleCpus
bm.SharedIdleCpusCount = bm.SharedIdleCpus.Size()
bm.CpusAllowed = bm.Cpus.Union(bm.SharedIdleCpus)
bm.CpusAllowedCount = bm.CpusAllowed.Size()
bm.Mems = bln.Mems.String()
cNames := []string{}
// Get container names and total requested milliCPUs.
for _, containerIDs := range bln.PodIDs {
for _, containerID := range containerIDs {
if c, ok := p.cch.LookupContainer(containerID); ok {
cNames = append(cNames, c.PrettyName())
bm.ContainerReqMilliCpus += p.containerRequestedMilliCpus(containerID)
}
}
}
sort.Strings(cNames)
bm.ContainerNames = strings.Join(cNames, ",")
}
return policyMetrics
}
// CollectMetrics generates prometheus metrics from cached/polled
// policy-specific metrics data.
func (p *balloons) CollectMetrics(m policy.Metrics) ([]prometheus.Metric, error) {
metrics, ok := m.(*Metrics)
if !ok {
return nil, balloonsError("type mismatch in balloons metrics")
}
promMetrics := make([]prometheus.Metric, len(metrics.Balloons))
for index, bm := range metrics.Balloons {
promMetrics[index] = prometheus.MustNewConstMetric(
descriptors[balloonsDesc],
prometheus.GaugeValue,
float64(bm.Cpus.Size()),
bm.DefName,
bm.CpuClass,
strconv.Itoa(bm.MinCpus),
strconv.Itoa(bm.MaxCpus),
bm.PrettyName,
bm.Cpus.String(),
strconv.Itoa(bm.CpusCount),
strings.Join(bm.Numas, ","),
strconv.Itoa(bm.NumasCount),
strings.Join(bm.Dies, ","),
strconv.Itoa(bm.DiesCount),
strings.Join(bm.Packages, ","),
strconv.Itoa(bm.PackagesCount),
bm.SharedIdleCpus.String(),
strconv.Itoa(bm.SharedIdleCpusCount),
bm.CpusAllowed.String(),
strconv.Itoa(bm.CpusAllowedCount),
bm.Mems,
bm.ContainerNames,
strconv.Itoa(bm.ContainerReqMilliCpus))
}
return promMetrics, nil
}