mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-23 20:36:21 +01:00
859a825bb8
* Move NodeCollector into package collector * Refactor collector enabling * Update README with new collector enabled flags * Fix out-of-date inline flag reference syntax * Use new flags in end-to-end tests * Add flag to disable all default collectors * Track if a flag has been set explicitly * Add --collectors.disable-defaults to README * Revert disable-defaults flag * Shorten flags * Fixup timex collector registration * Fix end-to-end tests * Change procfs and sysfs path flags * Fix review comments
61 lines
1.6 KiB
Go
61 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 darwin dragonfly freebsd linux
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// +build !nomeminfo
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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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const (
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memInfoSubsystem = "memory"
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)
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type meminfoCollector struct{}
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func init() {
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registerCollector("meminfo", defaultEnabled, NewMeminfoCollector)
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}
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// NewMeminfoCollector returns a new Collector exposing memory stats.
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func NewMeminfoCollector() (Collector, error) {
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return &meminfoCollector{}, nil
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}
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// Update calls (*meminfoCollector).getMemInfo to get the platform specific
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// memory metrics.
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func (c *meminfoCollector) Update(ch chan<- prometheus.Metric) error {
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memInfo, err := c.getMemInfo()
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if err != nil {
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return fmt.Errorf("couldn't get meminfo: %s", err)
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}
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log.Debugf("Set node_mem: %#v", memInfo)
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for k, v := range memInfo {
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(namespace, memInfoSubsystem, k),
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fmt.Sprintf("Memory information field %s.", k),
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nil, nil,
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),
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prometheus.GaugeValue, v,
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)
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}
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return nil
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}
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