Go边缘代理: 单文件可执行+嵌入式MediaMTX+监控+注册

- edge-agent/: Go项目, 支持Windows托盘/Linux无头两种模式
- 使用go:embed将MediaMTX二进制嵌入单一可执行文件
- 首次运行自动释放MediaMTX并生成边缘节点配置
- 自动注册到origin (POST /api/nodes/register)
- 10秒心跳上报CPU/RAM/带宽/连接数 (gopsutil采集)
- Windows: getlantern/systray托盘菜单(状态/CPU/MEM/带宽/退出)
- Linux: headless模式,适合systemd守护
- build.sh/build.ps1: 交叉编译脚本(Linux/Windows)
- 更新start.sh/品牌名StreamCore

edge-agent/agent/monitor.go

@@ -0,0 +1,83 @@
+package agent
+
+import (
+	"log"
+	"sync"
+	"time"
+
+	"github.com/shirou/gopsutil/v3/cpu"
+	"github.com/shirou/gopsutil/v3/mem"
+	"github.com/shirou/gopsutil/v3/net"
+)
+
+type Metrics struct {
+	CPU        float64
+	Memory     float64
+	Bandwidth  float64
+	ActiveConns int
+	HlsReaders int
+}
+
+type Monitor struct {
+	mu          sync.RWMutex
+	current     Metrics
+	prevNetIn   uint64
+	prevNetOut  uint64
+	prevNetTime time.Time
+}
+
+func NewMonitor() *Monitor {
+	return &Monitor{}
+}
+
+func (m *Monitor) Tick() {
+	metrics := Metrics{}
+
+	if pct, err := cpu.Percent(0, false); err == nil && len(pct) > 0 {
+		metrics.CPU = pct[0]
+	}
+
+	if v, err := mem.VirtualMemory(); err == nil {
+		metrics.Memory = v.UsedPercent
+	}
+
+	ioCounters, err := net.IOCounters(false)
+	if err == nil && len(ioCounters) > 0 {
+		now := time.Now()
+		curIn := ioCounters[0].BytesRecv
+		curOut := ioCounters[0].BytesSent
+
+		if m.prevNetTime.IsZero() {
+			m.prevNetIn = curIn
+			m.prevNetOut = curOut
+			m.prevNetTime = now
+		} else {
+			elapsed := now.Sub(m.prevNetTime).Seconds()
+			if elapsed > 0 {
+				bytesTotal := (curIn - m.prevNetIn) + (curOut - m.prevNetOut)
+				metrics.Bandwidth = float64(bytesTotal) * 8 / elapsed / 1e6
+			}
+			m.prevNetIn = curIn
+			m.prevNetOut = curOut
+			m.prevNetTime = now
+		}
+	}
+
+	conns, _ := net.Connections("tcp")
+	metrics.ActiveConns = len(conns)
+
+	metrics.HlsReaders = 0
+
+	m.mu.Lock()
+	m.current = metrics
+	m.mu.Unlock()
+
+	log.Printf("Metrics: CPU=%.1f%% MEM=%.1f%% BW=%.1fMbps CONN=%d",
+		metrics.CPU, metrics.Memory, metrics.Bandwidth, metrics.ActiveConns)
+}
+
+func (m *Monitor) Snapshot() Metrics {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	return m.current
+}