api: remove service health from prometheus, implement godoxy metrics

internal/metrics/systeminfo/system_info.go

@@ -0,0 +1,60 @@
+package systeminfo
+
+import (
+	"context"
+	"time"
+
+	"github.com/shirou/gopsutil/v4/cpu"
+	"github.com/shirou/gopsutil/v4/disk"
+	"github.com/shirou/gopsutil/v4/mem"
+	"github.com/shirou/gopsutil/v4/net"
+	"github.com/shirou/gopsutil/v4/sensors"
+	"github.com/yusing/go-proxy/internal/metrics/period"
+)
+
+type SystemInfo struct {
+	Timestamp  time.Time
+	CPUAverage float64
+	Memory     *mem.VirtualMemoryStat
+	Disk       *disk.UsageStat
+	Network    *net.IOCountersStat
+	Sensors    []sensors.TemperatureStat
+}
+
+var Poller = period.NewPoller("system_info", 1*time.Second, getSystemInfo)
+
+func init() {
+	Poller.Start()
+}
+
+func getSystemInfo(ctx context.Context) (*SystemInfo, error) {
+	memoryInfo, err := mem.VirtualMemory()
+	if err != nil {
+		return nil, err
+	}
+	cpuAverage, err := cpu.PercentWithContext(ctx, 150*time.Millisecond, false)
+	if err != nil {
+		return nil, err
+	}
+	diskInfo, err := disk.Usage("/")
+	if err != nil {
+		return nil, err
+	}
+	networkInfo, err := net.IOCounters(false)
+	if err != nil {
+		return nil, err
+	}
+	sensors, err := sensors.SensorsTemperatures()
+	if err != nil {
+		return nil, err
+	}
+
+	return &SystemInfo{
+		Timestamp:  time.Now(),
+		CPUAverage: cpuAverage[0],
+		Memory:     memoryInfo,
+		Disk:       diskInfo,
+		Network:    &networkInfo[0],
+		Sensors:    sensors,
+	}, nil
+}