74 lines
2.2 KiB
Go
74 lines
2.2 KiB
Go
// Copyright 2022 The Prometheus 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.
|
|
|
|
//go:build !nostat
|
|
// +build !nostat
|
|
|
|
package collector
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/go-kit/log"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
)
|
|
|
|
const cgroupsCollectorSubsystem = "cgroups"
|
|
|
|
type cgroupSummaryCollector struct {
|
|
fs procfs.FS
|
|
cgroups *prometheus.Desc
|
|
enabled *prometheus.Desc
|
|
logger log.Logger
|
|
}
|
|
|
|
func init() {
|
|
registerCollector(cgroupsCollectorSubsystem, defaultDisabled, NewCgroupSummaryCollector)
|
|
}
|
|
|
|
// NewCgroupSummaryCollector returns a new Collector exposing a summary of cgroups.
|
|
func NewCgroupSummaryCollector(logger log.Logger) (Collector, error) {
|
|
fs, err := procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open procfs: %w", err)
|
|
}
|
|
return &cgroupSummaryCollector{
|
|
fs: fs,
|
|
cgroups: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, cgroupsCollectorSubsystem, "cgroups"),
|
|
"Current cgroup number of the subsystem.",
|
|
[]string{"subsys_name"}, nil,
|
|
),
|
|
enabled: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, cgroupsCollectorSubsystem, "enabled"),
|
|
"Current cgroup number of the subsystem.",
|
|
[]string{"subsys_name"}, nil,
|
|
),
|
|
logger: logger,
|
|
}, nil
|
|
}
|
|
|
|
// Update implements Collector and exposes cgroup statistics.
|
|
func (c *cgroupSummaryCollector) Update(ch chan<- prometheus.Metric) error {
|
|
cgroupSummarys, err := c.fs.CgroupSummarys()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, cs := range cgroupSummarys {
|
|
ch <- prometheus.MustNewConstMetric(c.cgroups, prometheus.GaugeValue, float64(cs.Cgroups), cs.SubsysName)
|
|
ch <- prometheus.MustNewConstMetric(c.enabled, prometheus.GaugeValue, float64(cs.Enabled), cs.SubsysName)
|
|
}
|
|
return nil
|
|
}
|