feat(monitor): 自 go-hua 迁入系统资源监控

- Start 后台每秒采集(CPU/内存/磁盘/网络/进程/连接/主机), GetInfo 取快照 - 基于 gopsutil, 附测试、examples/monitor 例程与包 README
2026-09-20 12:29:37 +08:00
parent 138c929bd4
commit 30a0889ffa
11 changed files with 963 additions and 0 deletions
@@ -0,0 +1,67 @@
+package monitor
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/shirou/gopsutil/v3/mem"
+)
+
+// SwapDevice 交换分区设备信息
+type SwapDevice struct {
+	Name      string `json:"name"`
+	UsedBytes uint64 `json:"usedBytes"`
+	FreeBytes uint64 `json:"freeBytes"`
+}
+
+// MemInfo 内存信息（总量/已用/可用/使用率等，gopsutil mem.VirtualMemoryStat）
+type MemInfo struct {
+	Total           uint64       `json:"total"`
+	Available       uint64       `json:"available"`
+	Used            uint64       `json:"used"`
+	Free            uint64       `json:"free"`
+	UsedPercent     float64      `json:"usedPercent"`
+	SwapTotal       uint64       `json:"swapTotal"`
+	SwapAvailable   uint64       `json:"SwapAvailable"`
+	SwapUsed        uint64       `json:"swapUsed"`
+	SwapFree        uint64       `json:"swapFree"`
+	SwapUsedPercent float64      `json:"swapUsedPercent"`
+	SwapDevices     []SwapDevice `json:"swapDevices"`
+}
+
+// getMemInfo 采集内存与交换区信息
+func getMemInfo() (MemInfo, error) {
+
+	info := MemInfo{}
+
+	v, err := mem.VirtualMemory()
+	if err != nil {
+		return info, err
+	}
+	info.Total = v.Total
+	info.Used = v.Used
+	info.Free = v.Free
+	info.UsedPercent, _ = strconv.ParseFloat(fmt.Sprintf("%.1f", v.UsedPercent), 64)
+
+	s, err := mem.SwapMemory()
+	if err != nil {
+		return info, err
+	}
+	info.SwapTotal = s.Total
+	info.SwapUsed = s.Used
+	info.SwapFree = s.Free
+	info.SwapUsedPercent, _ = strconv.ParseFloat(fmt.Sprintf("%.1f", s.UsedPercent), 64)
+
+	devices, err := mem.SwapDevices()
+	if err != nil {
+		return info, err
+	}
+	for _, device := range devices {
+		info.SwapDevices = append(info.SwapDevices, SwapDevice{
+			Name:      device.Name,
+			UsedBytes: device.UsedBytes,
+			FreeBytes: device.FreeBytes,
+		})
+	}
+	return info, err
+}