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// Copyright 2015 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.
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
// +build !noloadavg
package collector
import (
"fmt"
"github.com/go-kit/kit/log"
"github.com/go-kit/kit/log/level"
"github.com/prometheus/client_golang/prometheus"
)
type loadavgCollector struct {
metric []typedDesc
logger log.Logger
}
func init() {
registerCollector("loadavg", defaultEnabled, NewLoadavgCollector)
}
// NewLoadavgCollector returns a new Collector exposing load average stats.
func NewLoadavgCollector(logger log.Logger) (Collector, error) {
return &loadavgCollector{
metric: []typedDesc{
{prometheus.NewDesc(namespace+"_load1", "1m load average.", nil, nil), prometheus.GaugeValue},
{prometheus.NewDesc(namespace+"_load5", "5m load average.", nil, nil), prometheus.GaugeValue},
{prometheus.NewDesc(namespace+"_load15", "15m load average.", nil, nil), prometheus.GaugeValue},
},
logger: logger,
}, nil
}
func (c *loadavgCollector) Update(ch chan<- prometheus.Metric) error {
loads, err := getLoad()
if err != nil {
return fmt.Errorf("couldn't get load: %w", err)
}
for i, load := range loads {
level.Debug(c.logger).Log("msg", "return load", "index", i, "load", load)
ch <- c.metric[i].mustNewConstMetric(load)
}
return err
}
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