40b8afb150
Backend stability and security improvements: * internal/util/ — common RandomHex helper, removed 3 duplicates * ESL: deduplicated readMessage (locked/unlocked), net.JoinHostPort for IPv6 * AMI: synchronous reconnect() in readEventsLoop, net.JoinHostPort for IPv6 * Auth: /api/auth/refresh accepts Authorization header only (no ?token=) * decodeJSON: http.MaxBytesReader(1<<20) body limit * Trunks: gatewayParams() uses configured ESL.GatewayPrefix * Config: jwt_secret_env env-var fallback * FSCollector: time.After → time.NewTimer with defer Stop * Monitoring: Prometheus counters (route_requests, nodes_total/healthy, uptime) * go fmt pass across all internal/ packages
85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
package agent
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import (
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"bufio"
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"os"
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"strconv"
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"strings"
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"time"
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)
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// nowTS возвращает текущий unix timestamp.
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func nowTS() int64 {
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return time.Now().Unix()
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}
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// SystemStats содержит системные метрики (CPU, load).
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type SystemStats struct {
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Load1 float64 // load average 1m
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Load5 float64 // load average 5m
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Load15 float64 // load average 15m
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IdleCPU float64 // процент простоя CPU
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}
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// CollectSystem собирает системные метрики из /proc.
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func CollectSystem() *SystemStats {
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load1, load5, load15 := loadAvg()
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return &SystemStats{
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Load1: load1,
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Load5: load5,
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Load15: load15,
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IdleCPU: cpuIdle(),
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}
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}
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// loadAvg читает /proc/loadavg.
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func loadAvg() (float64, float64, float64) {
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data, err := os.ReadFile("/proc/loadavg")
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if err != nil {
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return 0, 0, 0
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}
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parts := strings.Fields(string(data))
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if len(parts) < 3 {
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return 0, 0, 0
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}
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load1, _ := strconv.ParseFloat(parts[0], 64)
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load5, _ := strconv.ParseFloat(parts[1], 64)
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load15, _ := strconv.ParseFloat(parts[2], 64)
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return load1, load5, load15
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}
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// cpuIdle вычисляет процент простоя CPU из /proc/stat.
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func cpuIdle() float64 {
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file, err := os.Open("/proc/stat")
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if err != nil {
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return 0
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}
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defer file.Close()
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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 !strings.HasPrefix(line, "cpu ") {
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continue
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}
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fields := strings.Fields(line)
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if len(fields) < 8 {
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return 0
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}
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// cpu user nice system idle iowait irq softirq steal ...
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var total, idle float64
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for i, f := range fields[1:] {
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val, _ := strconv.ParseFloat(f, 64)
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total += val
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if i == 3 || i == 4 { // idle + iowait
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idle += val
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}
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}
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if total > 0 {
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return (idle / total) * 100.0
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}
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return 0
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}
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return 0
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}
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