a.gritsenkoandClaude Sonnet 5
09159a5f31
Go service (nasmon/) plus nfpm packaging (packaging/), carried over from the home_nas monorepo. Adds rpm packaging alongside the existing deb build (Fedora/RHEL/Rocky dependency names via nfpm overrides, per-format systemd unit path, dpkg+rpm-compatible maintainer scripts) and a Gitea Actions workflow that builds both formats on every push. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
78 lines
1.5 KiB
Go
78 lines
1.5 KiB
Go
package collect
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import (
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"bufio"
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"bytes"
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"os"
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"strconv"
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"strings"
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)
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type Memory struct {
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Total uint64 `json:"total"`
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Available uint64 `json:"available"`
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Used uint64 `json:"used"` // Total - Available
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SwapTotal uint64 `json:"swap_total"`
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SwapUsed uint64 `json:"swap_used"`
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ARCSize uint64 `json:"arc_size"`
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ARCMax uint64 `json:"arc_max"`
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}
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func ReadMemory() (Memory, error) {
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b, err := os.ReadFile("/proc/meminfo")
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if err != nil {
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return Memory{}, err
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}
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m := parseMeminfo(b)
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if ab, err := os.ReadFile("/proc/spl/kstat/zfs/arcstats"); err == nil {
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m.ARCSize, m.ARCMax = parseArcstats(ab)
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}
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return m, nil
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}
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func parseMeminfo(b []byte) Memory {
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kv := map[string]uint64{}
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sc := bufio.NewScanner(bytes.NewReader(b))
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for sc.Scan() {
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f := strings.Fields(sc.Text())
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if len(f) < 2 {
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continue
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}
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n, err := strconv.ParseUint(f[1], 10, 64)
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if err != nil {
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continue
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}
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kv[strings.TrimSuffix(f[0], ":")] = n * 1024
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}
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m := Memory{
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Total: kv["MemTotal"],
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Available: kv["MemAvailable"],
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SwapTotal: kv["SwapTotal"],
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}
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m.Used = m.Total - m.Available
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m.SwapUsed = m.SwapTotal - kv["SwapFree"]
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return m
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}
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// parseArcstats picks "size" and "c_max" from the kstat table (name type data).
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func parseArcstats(b []byte) (size, max uint64) {
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sc := bufio.NewScanner(bytes.NewReader(b))
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for sc.Scan() {
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f := strings.Fields(sc.Text())
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if len(f) != 3 {
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continue
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}
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n, err := strconv.ParseUint(f[2], 10, 64)
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if err != nil {
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continue
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}
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switch f[0] {
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case "size":
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size = n
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case "c_max":
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max = n
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}
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}
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return
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}
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