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package servermetrics
import (
"context"
"log"
"sync"
"time"
"github.com/shirou/gopsutil/v4/cpu"
"github.com/shirou/gopsutil/v4/disk"
"github.com/shirou/gopsutil/v4/mem"
)
type Stats struct {
CPUPercent float64 `json:"cpu_percent"`
MemoryUsed uint64 `json:"memory_used"`
MemoryTotal uint64 `json:"memory_total"`
MemoryPct float64 `json:"memory_percent"`
DiskUsed uint64 `json:"disk_used"`
DiskTotal uint64 `json:"disk_total"`
DiskPct float64 `json:"disk_percent"`
}
type Collector struct {
mu sync.RWMutex
last Stats
diskPath string
}
func New(diskPath string) *Collector {
return &Collector{diskPath: diskPath}
}
func (c *Collector) Start(ctx context.Context) {
c.collectOnce(ctx, 500*time.Millisecond)
ticker := time.NewTicker(30 * time.Second)
defer ticker.Stop()
for {
select {
case <-ticker.C:
c.collectOnce(ctx, 0)
case <-ctx.Done():
return
}
}
}
func (c *Collector) collectOnce(ctx context.Context, cpuInterval time.Duration) {
cpuPct, err := cpu.PercentWithContext(ctx, cpuInterval, false)
if err != nil {
log.Printf("[servermetrics] erro cpu: %v", err)
return
}
memStat, err := mem.VirtualMemoryWithContext(ctx)
if err != nil {
log.Printf("[servermetrics] erro mem: %v", err)
return
}
diskStat, err := disk.UsageWithContext(ctx, c.diskPath)
if err != nil {
log.Printf("[servermetrics] erro disk: %v", err)
return
}
c.mu.Lock()
c.last = Stats{
CPUPercent: cpuPct[0],
MemoryUsed: memStat.Used,
MemoryTotal: memStat.Total,
MemoryPct: memStat.UsedPercent,
DiskUsed: diskStat.Used,
DiskTotal: diskStat.Total,
DiskPct: diskStat.UsedPercent,
}
c.mu.Unlock()
}
func (c *Collector) Get() Stats {
c.mu.RLock()
defer c.mu.RUnlock()
return c.last
}
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