mirror of
https://github.com/ClusterCockpit/cc-metric-collector.git
synced 2024-09-20 07:27:25 +02:00
113 lines
2.6 KiB
Go
113 lines
2.6 KiB
Go
package collectors
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import (
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"bufio"
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"encoding/json"
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"os"
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"strings"
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"syscall"
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"time"
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cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
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lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
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)
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// "log"
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const MOUNTFILE = `/proc/self/mounts`
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type DiskstatCollectorConfig struct {
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ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
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}
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type DiskstatCollector struct {
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metricCollector
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//matches map[string]int
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config IOstatCollectorConfig
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//devices map[string]IOstatCollectorEntry
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}
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func (m *DiskstatCollector) Init(config json.RawMessage) error {
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m.name = "DiskstatCollector"
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m.meta = map[string]string{"source": m.name, "group": "Disk"}
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m.setup()
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if len(config) > 0 {
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err := json.Unmarshal(config, &m.config)
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if err != nil {
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return err
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}
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}
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file, err := os.Open(string(MOUNTFILE))
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if err != nil {
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cclog.ComponentError(m.name, err.Error())
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return err
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}
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defer file.Close()
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m.init = true
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return nil
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}
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func (m *DiskstatCollector) Read(interval time.Duration, output chan lp.CCMetric) {
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if !m.init {
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return
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}
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file, err := os.Open(string(MOUNTFILE))
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if err != nil {
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cclog.ComponentError(m.name, err.Error())
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return
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}
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defer file.Close()
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part_max_used := uint64(0)
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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line := scanner.Text()
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if len(line) == 0 {
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continue
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}
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if !strings.HasPrefix(line, "/dev") {
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continue
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}
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linefields := strings.Fields(line)
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if strings.Contains(linefields[0], "loop") {
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continue
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}
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if strings.Contains(linefields[1], "boot") {
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continue
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}
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path := strings.Replace(linefields[1], `\040`, " ", -1)
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stat := syscall.Statfs_t{}
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err := syscall.Statfs(path, &stat)
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if err != nil {
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continue
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}
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tags := map[string]string{"type": "node", "device": linefields[0]}
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total := (stat.Blocks * uint64(stat.Bsize)) / uint64(1000000000)
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y, err := lp.New("disk_total", tags, m.meta, map[string]interface{}{"value": total}, time.Now())
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if err == nil {
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y.AddMeta("unit", "GBytes")
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output <- y
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}
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free := (stat.Bfree * uint64(stat.Bsize)) / uint64(1000000000)
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y, err = lp.New("disk_free", tags, m.meta, map[string]interface{}{"value": free}, time.Now())
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if err == nil {
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y.AddMeta("unit", "GBytes")
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output <- y
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}
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perc := (100 * (total - free)) / total
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if perc > part_max_used {
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part_max_used = perc
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}
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}
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y, err := lp.New("part_max_used", map[string]string{"type": "node"}, m.meta, map[string]interface{}{"value": int(part_max_used)}, time.Now())
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if err == nil {
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y.AddMeta("unit", "percent")
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output <- y
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}
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}
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func (m *DiskstatCollector) Close() {
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m.init = false
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}
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