Initial commit

core/metrics.go

@@ -0,0 +1,83 @@
+package core
+
+import (
+	"sync/atomic"
+	"time"
+)
+
+// Metrics Core 监控指标
+type Metrics struct {
+	// 连接统计
+	activeConnections atomic.Int64
+	totalConnections  atomic.Int64
+
+	// 流量统计
+	bytesSent     atomic.Uint64
+	bytesReceived atomic.Uint64
+
+	// 策略统计
+	strategyFallbacks atomic.Int64
+	lastSwitchTime    atomic.Int64 // Unix timestamp
+}
+
+// NewMetrics 创建监控指标
+func NewMetrics() *Metrics {
+	return &Metrics{}
+}
+
+// GetActiveConnections 获取活跃连接数
+func (m *Metrics) GetActiveConnections() int64 {
+	return m.activeConnections.Load()
+}
+
+// IncrActiveConnections 增加活跃连接数
+func (m *Metrics) IncrActiveConnections() {
+	m.activeConnections.Add(1)
+	m.totalConnections.Add(1)
+}
+
+// DecrActiveConnections 减少活跃连接数
+func (m *Metrics) DecrActiveConnections() {
+	m.activeConnections.Add(-1)
+}
+
+// AddBytesSent 增加发送字节数
+func (m *Metrics) AddBytesSent(n uint64) {
+	m.bytesSent.Add(n)
+}
+
+// AddBytesReceived 增加接收字节数
+func (m *Metrics) AddBytesReceived(n uint64) {
+	m.bytesReceived.Add(n)
+}
+
+// IncrStrategyFallbacks 增加策略降级次数
+func (m *Metrics) IncrStrategyFallbacks() {
+	m.strategyFallbacks.Add(1)
+	m.lastSwitchTime.Store(time.Now().Unix())
+}
+
+// GetTotalConnections 获取总连接数
+func (m *Metrics) GetTotalConnections() int64 {
+	return m.totalConnections.Load()
+}
+
+// GetBytesSent 获取发送字节数
+func (m *Metrics) GetBytesSent() uint64 {
+	return m.bytesSent.Load()
+}
+
+// GetBytesReceived 获取接收字节数
+func (m *Metrics) GetBytesReceived() uint64 {
+	return m.bytesReceived.Load()
+}
+
+// GetStrategyFallbacks 获取策略降级次数
+func (m *Metrics) GetStrategyFallbacks() int64 {
+	return m.strategyFallbacks.Load()
+}
+
+// GetLastSwitchTime 获取最后切换时间
+func (m *Metrics) GetLastSwitchTime() time.Time {
+	return time.Unix(m.lastSwitchTime.Load(), 0)
+}