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https://github.com/prometheus/node_exporter.git
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922e74d58f
Named return variables should only be used to describe the returned type further, e.g. `err error` doesn't add any new information and is just stutter.
56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
// Copyright 2015 The Prometheus 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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// +build !noloadavg
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// +build !windows
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package collector
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import (
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"fmt"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/common/log"
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)
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type loadavgCollector struct {
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metric []typedDesc
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}
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func init() {
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Factories["loadavg"] = NewLoadavgCollector
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}
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// NewLoadavgCollector returns a new Collector exposing load average stats.
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func NewLoadavgCollector() (Collector, error) {
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return &loadavgCollector{
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metric: []typedDesc{
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{prometheus.NewDesc(Namespace+"_load1", "1m load average.", nil, nil), prometheus.GaugeValue},
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{prometheus.NewDesc(Namespace+"_load5", "5m load average.", nil, nil), prometheus.GaugeValue},
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{prometheus.NewDesc(Namespace+"_load15", "15m load average.", nil, nil), prometheus.GaugeValue},
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},
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}, nil
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}
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func (c *loadavgCollector) Update(ch chan<- prometheus.Metric) error {
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loads, err := getLoad()
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if err != nil {
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return fmt.Errorf("couldn't get load: %s", err)
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}
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for i, load := range loads {
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log.Debugf("return load %d: %f", i, load)
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ch <- c.metric[i].mustNewConstMetric(load)
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}
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return err
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}
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