799 lines
20 KiB
Go
799 lines
20 KiB
Go
package dns
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import (
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"os"
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"path/filepath"
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"runtime"
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"sort"
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"strings"
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"sync"
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"time"
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"dns-server/config"
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"dns-server/logger"
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"dns-server/shield"
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"github.com/miekg/dns"
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)
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// BlockedDomain 屏蔽域名统计
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type BlockedDomain struct {
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Domain string
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Count int64
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LastSeen time.Time
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}
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// StatsData 用于持久化的统计数据结构
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type StatsData struct {
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Stats *Stats `json:"stats"`
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BlockedDomains map[string]*BlockedDomain `json:"blockedDomains"`
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ResolvedDomains map[string]*BlockedDomain `json:"resolvedDomains"`
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HourlyStats map[string]int64 `json:"hourlyStats"`
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DailyStats map[string]int64 `json:"dailyStats"`
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MonthlyStats map[string]int64 `json:"monthlyStats"`
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LastSaved time.Time `json:"lastSaved"`
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}
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// Server DNS服务器
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type Server struct {
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config *config.DNSConfig
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shieldConfig *config.ShieldConfig
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shieldManager *shield.ShieldManager
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server *dns.Server
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resolver *dns.Client
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ctx context.Context
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cancel context.CancelFunc
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statsMutex sync.Mutex
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stats *Stats
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blockedDomainsMutex sync.RWMutex
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blockedDomains map[string]*BlockedDomain
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resolvedDomainsMutex sync.RWMutex
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resolvedDomains map[string]*BlockedDomain // 用于记录解析的域名
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hourlyStatsMutex sync.RWMutex
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hourlyStats map[string]int64 // 按小时统计屏蔽数量
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dailyStatsMutex sync.RWMutex
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dailyStats map[string]int64 // 按天统计屏蔽数量
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monthlyStatsMutex sync.RWMutex
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monthlyStats map[string]int64 // 按月统计屏蔽数量
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saveTicker *time.Ticker // 用于定时保存数据
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saveDone chan struct{} // 用于通知保存协程停止
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}
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// Stats DNS服务器统计信息
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type Stats struct {
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Queries int64
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Blocked int64
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Allowed int64
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Errors int64
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LastQuery time.Time
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AvgResponseTime float64 // 平均响应时间(ms)
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TotalResponseTime int64 // 总响应时间
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QueryTypes map[string]int64 // 查询类型统计
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SourceIPs map[string]bool // 活跃来源IP
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CpuUsage float64 // CPU使用率(%)
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}
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// NewServer 创建DNS服务器实例
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func NewServer(config *config.DNSConfig, shieldConfig *config.ShieldConfig, shieldManager *shield.ShieldManager) *Server {
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ctx, cancel := context.WithCancel(context.Background())
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server := &Server{
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config: config,
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shieldConfig: shieldConfig,
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shieldManager: shieldManager,
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resolver: &dns.Client{
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Net: "udp",
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Timeout: time.Duration(config.Timeout) * time.Millisecond,
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},
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ctx: ctx,
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cancel: cancel,
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stats: &Stats{
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Queries: 0,
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Blocked: 0,
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Allowed: 0,
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Errors: 0,
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AvgResponseTime: 0,
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TotalResponseTime: 0,
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QueryTypes: make(map[string]int64),
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SourceIPs: make(map[string]bool),
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CpuUsage: 0,
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},
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blockedDomains: make(map[string]*BlockedDomain),
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resolvedDomains: make(map[string]*BlockedDomain),
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hourlyStats: make(map[string]int64),
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dailyStats: make(map[string]int64),
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monthlyStats: make(map[string]int64),
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saveDone: make(chan struct{}),
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}
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// 加载已保存的统计数据
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server.loadStatsData()
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return server
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}
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// Start 启动DNS服务器
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func (s *Server) Start() error {
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s.server = &dns.Server{
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Addr: fmt.Sprintf(":%d", s.config.Port),
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Net: "udp",
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Handler: dns.HandlerFunc(s.handleDNSRequest),
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}
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// 启动TCP服务器（用于大型响应）
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tcpServer := &dns.Server{
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Addr: fmt.Sprintf(":%d", s.config.Port),
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Net: "tcp",
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Handler: dns.HandlerFunc(s.handleDNSRequest),
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}
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// 启动CPU使用率监控
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go s.startCpuUsageMonitor()
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// 启动UDP服务
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go func() {
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logger.Info(fmt.Sprintf("DNS UDP服务器启动，监听端口: %d", s.config.Port))
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if err := s.server.ListenAndServe(); err != nil {
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logger.Error("DNS UDP服务器启动失败", "error", err)
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s.cancel()
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}
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}()
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// 启动TCP服务
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go func() {
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logger.Info(fmt.Sprintf("DNS TCP服务器启动，监听端口: %d", s.config.Port))
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if err := tcpServer.ListenAndServe(); err != nil {
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logger.Error("DNS TCP服务器启动失败", "error", err)
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s.cancel()
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}
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}()
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// 等待停止信号
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<-s.ctx.Done()
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return nil
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}
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// Stop 停止DNS服务器
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func (s *Server) Stop() {
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// 发送停止信号给保存协程
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close(s.saveDone)
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// 最后保存一次数据
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s.saveStatsData()
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// 停止服务器
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s.cancel()
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if s.server != nil {
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s.server.Shutdown()
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}
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logger.Info("DNS服务器已停止")
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}
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// handleDNSRequest 处理DNS请求
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func (s *Server) handleDNSRequest(w dns.ResponseWriter, r *dns.Msg) {
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startTime := time.Now()
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// 获取来源IP
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sourceIP := w.RemoteAddr().String()
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// 提取IP地址部分，去掉端口
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if idx := strings.LastIndex(sourceIP, ":"); idx >= 0 {
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sourceIP = sourceIP[:idx]
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}
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// 更新来源IP统计
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s.updateStats(func(stats *Stats) {
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stats.Queries++
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stats.LastQuery = time.Now()
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stats.SourceIPs[sourceIP] = true
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})
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// 只处理递归查询
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if r.RecursionDesired == false {
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response := new(dns.Msg)
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response.SetReply(r)
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response.RecursionAvailable = true
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response.SetRcode(r, dns.RcodeRefused)
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w.WriteMsg(response)
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// 计算响应时间
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responseTime := time.Since(startTime).Milliseconds()
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s.updateStats(func(stats *Stats) {
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stats.TotalResponseTime += responseTime
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if stats.Queries > 0 {
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stats.AvgResponseTime = float64(stats.TotalResponseTime) / float64(stats.Queries)
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}
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})
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return
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}
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// 获取查询域名和类型
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var domain string
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var queryType string
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if len(r.Question) > 0 {
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domain = r.Question[0].Name
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// 移除末尾的点
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if len(domain) > 0 && domain[len(domain)-1] == '.' {
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domain = domain[:len(domain)-1]
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}
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// 获取查询类型
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queryType = dns.TypeToString[r.Question[0].Qtype]
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// 更新查询类型统计
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s.updateStats(func(stats *Stats) {
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stats.QueryTypes[queryType]++
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})
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}
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logger.Debug("接收到DNS查询", "domain", domain, "type", queryType, "client", w.RemoteAddr())
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// 检查hosts文件是否有匹配
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if ip, exists := s.shieldManager.GetHostsIP(domain); exists {
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s.handleHostsResponse(w, r, ip)
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// 计算响应时间
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responseTime := time.Since(startTime).Milliseconds()
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s.updateStats(func(stats *Stats) {
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stats.TotalResponseTime += responseTime
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if stats.Queries > 0 {
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stats.AvgResponseTime = float64(stats.TotalResponseTime) / float64(stats.Queries)
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}
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})
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return
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}
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// 检查是否被屏蔽
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if s.shieldManager.IsBlocked(domain) {
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s.handleBlockedResponse(w, r, domain)
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// 计算响应时间
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responseTime := time.Since(startTime).Milliseconds()
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s.updateStats(func(stats *Stats) {
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stats.TotalResponseTime += responseTime
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if stats.Queries > 0 {
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stats.AvgResponseTime = float64(stats.TotalResponseTime) / float64(stats.Queries)
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}
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})
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return
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}
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// 转发到上游DNS服务器
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s.forwardDNSRequest(w, r, domain)
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// 计算响应时间
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responseTime := time.Since(startTime).Milliseconds()
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s.updateStats(func(stats *Stats) {
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stats.TotalResponseTime += responseTime
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if stats.Queries > 0 {
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stats.AvgResponseTime = float64(stats.TotalResponseTime) / float64(stats.Queries)
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}
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})
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}
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// handleHostsResponse 处理hosts文件匹配的响应
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func (s *Server) handleHostsResponse(w dns.ResponseWriter, r *dns.Msg, ip string) {
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response := new(dns.Msg)
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response.SetReply(r)
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response.RecursionAvailable = true
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if len(r.Question) > 0 {
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q := r.Question[0]
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answer := new(dns.A)
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answer.Hdr = dns.RR_Header{
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Name: q.Name,
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Rrtype: dns.TypeA,
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Class: dns.ClassINET,
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Ttl: 300,
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}
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answer.A = net.ParseIP(ip)
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response.Answer = append(response.Answer, answer)
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}
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// 记录解析域名统计
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domain := ""
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if len(r.Question) > 0 {
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domain = r.Question[0].Name
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if len(domain) > 0 && domain[len(domain)-1] == '.' {
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domain = domain[:len(domain)-1]
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}
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s.updateResolvedDomainStats(domain)
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}
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w.WriteMsg(response)
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s.updateStats(func(stats *Stats) {
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stats.Allowed++
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})
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}
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// handleBlockedResponse 处理被屏蔽的域名响应
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func (s *Server) handleBlockedResponse(w dns.ResponseWriter, r *dns.Msg, domain string) {
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logger.Info("域名被屏蔽", "domain", domain, "client", w.RemoteAddr())
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// 更新被屏蔽域名统计
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s.updateBlockedDomainStats(domain)
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// 更新总体统计
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s.updateStats(func(stats *Stats) {
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stats.Blocked++
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})
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response := new(dns.Msg)
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response.SetReply(r)
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response.RecursionAvailable = true
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// 获取屏蔽方法配置
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blockMethod := "NXDOMAIN" // 默认值
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customBlockIP := "" // 默认值
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// 从Server结构体的shieldConfig字段获取配置
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if s.shieldConfig != nil {
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blockMethod = s.shieldConfig.BlockMethod
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customBlockIP = s.shieldConfig.CustomBlockIP
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}
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// 根据屏蔽方法返回不同的响应
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||
switch blockMethod {
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case "refused":
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// 返回拒绝查询响应
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response.SetRcode(r, dns.RcodeRefused)
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case "emptyIP":
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// 返回空IP响应
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if len(r.Question) > 0 && r.Question[0].Qtype == dns.TypeA {
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answer := new(dns.A)
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answer.Hdr = dns.RR_Header{
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Name: r.Question[0].Name,
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Rrtype: dns.TypeA,
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Class: dns.ClassINET,
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Ttl: 300,
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}
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answer.A = net.ParseIP("0.0.0.0") // 空IP
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response.Answer = append(response.Answer, answer)
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}
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case "customIP":
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// 返回自定义IP响应
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if len(r.Question) > 0 && r.Question[0].Qtype == dns.TypeA && customBlockIP != "" {
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answer := new(dns.A)
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answer.Hdr = dns.RR_Header{
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Name: r.Question[0].Name,
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Rrtype: dns.TypeA,
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Class: dns.ClassINET,
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Ttl: 300,
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}
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answer.A = net.ParseIP(customBlockIP)
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response.Answer = append(response.Answer, answer)
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}
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case "NXDOMAIN", "":
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fallthrough // 默认使用NXDOMAIN
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default:
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// 返回NXDOMAIN响应（域名不存在）
|
||
response.SetRcode(r, dns.RcodeNameError)
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}
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w.WriteMsg(response)
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s.updateStats(func(stats *Stats) {
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stats.Blocked++
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})
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}
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// forwardDNSRequest 转发DNS请求到上游服务器
|
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func (s *Server) forwardDNSRequest(w dns.ResponseWriter, r *dns.Msg, domain string) {
|
||
// 尝试所有上游DNS服务器
|
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for _, upstream := range s.config.UpstreamDNS {
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response, rtt, err := s.resolver.Exchange(r, upstream)
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||
if err == nil && response != nil && response.Rcode == dns.RcodeSuccess {
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// 设置递归可用标志
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response.RecursionAvailable = true
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w.WriteMsg(response)
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logger.Debug("DNS查询成功", "domain", domain, "rtt", rtt, "server", upstream)
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// 记录解析域名统计
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s.updateResolvedDomainStats(domain)
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||
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s.updateStats(func(stats *Stats) {
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stats.Allowed++
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})
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return
|
||
}
|
||
}
|
||
|
||
// 所有上游服务器都失败，返回服务器失败错误
|
||
response := new(dns.Msg)
|
||
response.SetReply(r)
|
||
response.RecursionAvailable = true
|
||
response.SetRcode(r, dns.RcodeServerFailure)
|
||
w.WriteMsg(response)
|
||
|
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logger.Error("DNS查询失败", "domain", domain)
|
||
s.updateStats(func(stats *Stats) {
|
||
stats.Errors++
|
||
})
|
||
}
|
||
|
||
// updateBlockedDomainStats 更新被屏蔽域名统计
|
||
func (s *Server) updateBlockedDomainStats(domain string) {
|
||
// 更新被屏蔽域名计数
|
||
s.blockedDomainsMutex.Lock()
|
||
defer s.blockedDomainsMutex.Unlock()
|
||
|
||
if entry, exists := s.blockedDomains[domain]; exists {
|
||
entry.Count++
|
||
entry.LastSeen = time.Now()
|
||
} else {
|
||
s.blockedDomains[domain] = &BlockedDomain{
|
||
Domain: domain,
|
||
Count: 1,
|
||
LastSeen: time.Now(),
|
||
}
|
||
}
|
||
|
||
// 更新统计数据
|
||
now := time.Now()
|
||
|
||
// 更新小时统计
|
||
hourKey := now.Format("2006-01-02-15")
|
||
s.hourlyStatsMutex.Lock()
|
||
s.hourlyStats[hourKey]++
|
||
s.hourlyStatsMutex.Unlock()
|
||
|
||
// 更新每日统计
|
||
dayKey := now.Format("2006-01-02")
|
||
s.dailyStatsMutex.Lock()
|
||
s.dailyStats[dayKey]++
|
||
s.dailyStatsMutex.Unlock()
|
||
|
||
// 更新每月统计
|
||
monthKey := now.Format("2006-01")
|
||
s.monthlyStatsMutex.Lock()
|
||
s.monthlyStats[monthKey]++
|
||
s.monthlyStatsMutex.Unlock()
|
||
}
|
||
|
||
// updateResolvedDomainStats 更新解析域名统计
|
||
func (s *Server) updateResolvedDomainStats(domain string) {
|
||
s.resolvedDomainsMutex.Lock()
|
||
defer s.resolvedDomainsMutex.Unlock()
|
||
|
||
if entry, exists := s.resolvedDomains[domain]; exists {
|
||
entry.Count++
|
||
entry.LastSeen = time.Now()
|
||
} else {
|
||
s.resolvedDomains[domain] = &BlockedDomain{
|
||
Domain: domain,
|
||
Count: 1,
|
||
LastSeen: time.Now(),
|
||
}
|
||
}
|
||
}
|
||
|
||
// updateStats 更新统计信息
|
||
func (s *Server) updateStats(update func(*Stats)) {
|
||
s.statsMutex.Lock()
|
||
defer s.statsMutex.Unlock()
|
||
update(s.stats)
|
||
}
|
||
|
||
// GetStats 获取DNS服务器统计信息
|
||
func (s *Server) GetStats() *Stats {
|
||
s.statsMutex.Lock()
|
||
defer s.statsMutex.Unlock()
|
||
|
||
// 复制查询类型统计
|
||
queryTypesCopy := make(map[string]int64)
|
||
for k, v := range s.stats.QueryTypes {
|
||
queryTypesCopy[k] = v
|
||
}
|
||
|
||
// 复制来源IP统计
|
||
sourceIPsCopy := make(map[string]bool)
|
||
for ip := range s.stats.SourceIPs {
|
||
sourceIPsCopy[ip] = true
|
||
}
|
||
|
||
// 返回统计信息的副本
|
||
return &Stats{
|
||
Queries: s.stats.Queries,
|
||
Blocked: s.stats.Blocked,
|
||
Allowed: s.stats.Allowed,
|
||
Errors: s.stats.Errors,
|
||
LastQuery: s.stats.LastQuery,
|
||
AvgResponseTime: s.stats.AvgResponseTime,
|
||
TotalResponseTime: s.stats.TotalResponseTime,
|
||
QueryTypes: queryTypesCopy,
|
||
SourceIPs: sourceIPsCopy,
|
||
CpuUsage: s.stats.CpuUsage,
|
||
}
|
||
}
|
||
|
||
// GetTopBlockedDomains 获取TOP屏蔽域名列表
|
||
func (s *Server) GetTopBlockedDomains(limit int) []BlockedDomain {
|
||
s.blockedDomainsMutex.RLock()
|
||
defer s.blockedDomainsMutex.RUnlock()
|
||
|
||
// 转换为切片
|
||
domains := make([]BlockedDomain, 0, len(s.blockedDomains))
|
||
for _, entry := range s.blockedDomains {
|
||
domains = append(domains, *entry)
|
||
}
|
||
|
||
// 按计数排序
|
||
sort.Slice(domains, func(i, j int) bool {
|
||
return domains[i].Count > domains[j].Count
|
||
})
|
||
|
||
// 返回限制数量
|
||
if len(domains) > limit {
|
||
return domains[:limit]
|
||
}
|
||
return domains
|
||
}
|
||
|
||
// GetTopResolvedDomains 获取TOP解析域名
|
||
func (s *Server) GetTopResolvedDomains(limit int) []BlockedDomain {
|
||
s.resolvedDomainsMutex.RLock()
|
||
defer s.resolvedDomainsMutex.RUnlock()
|
||
|
||
// 转换为切片
|
||
domains := make([]BlockedDomain, 0, len(s.resolvedDomains))
|
||
for _, entry := range s.resolvedDomains {
|
||
domains = append(domains, *entry)
|
||
}
|
||
|
||
// 按数量排序
|
||
sort.Slice(domains, func(i, j int) bool {
|
||
return domains[i].Count > domains[j].Count
|
||
})
|
||
|
||
// 返回限制数量
|
||
if len(domains) > limit {
|
||
return domains[:limit]
|
||
}
|
||
return domains
|
||
}
|
||
|
||
// GetRecentBlockedDomains 获取最近屏蔽的域名列表
|
||
func (s *Server) GetRecentBlockedDomains(limit int) []BlockedDomain {
|
||
s.blockedDomainsMutex.RLock()
|
||
defer s.blockedDomainsMutex.RUnlock()
|
||
|
||
// 转换为切片
|
||
domains := make([]BlockedDomain, 0, len(s.blockedDomains))
|
||
for _, entry := range s.blockedDomains {
|
||
domains = append(domains, *entry)
|
||
}
|
||
|
||
// 按时间排序
|
||
sort.Slice(domains, func(i, j int) bool {
|
||
return domains[i].LastSeen.After(domains[j].LastSeen)
|
||
})
|
||
|
||
// 返回限制数量
|
||
if len(domains) > limit {
|
||
return domains[:limit]
|
||
}
|
||
return domains
|
||
}
|
||
|
||
// GetHourlyStats 获取每小时统计数据
|
||
func (s *Server) GetHourlyStats() map[string]int64 {
|
||
s.hourlyStatsMutex.RLock()
|
||
defer s.hourlyStatsMutex.RUnlock()
|
||
|
||
// 返回副本
|
||
result := make(map[string]int64)
|
||
for k, v := range s.hourlyStats {
|
||
result[k] = v
|
||
}
|
||
return result
|
||
}
|
||
|
||
// GetDailyStats 获取每日统计数据
|
||
func (s *Server) GetDailyStats() map[string]int64 {
|
||
s.dailyStatsMutex.RLock()
|
||
defer s.dailyStatsMutex.RUnlock()
|
||
|
||
// 返回副本
|
||
result := make(map[string]int64)
|
||
for k, v := range s.dailyStats {
|
||
result[k] = v
|
||
}
|
||
return result
|
||
}
|
||
|
||
// GetMonthlyStats 获取每月统计数据
|
||
func (s *Server) GetMonthlyStats() map[string]int64 {
|
||
s.monthlyStatsMutex.RLock()
|
||
defer s.monthlyStatsMutex.RUnlock()
|
||
|
||
// 返回副本
|
||
result := make(map[string]int64)
|
||
for k, v := range s.monthlyStats {
|
||
result[k] = v
|
||
}
|
||
return result
|
||
}
|
||
|
||
// loadStatsData 从文件加载统计数据
|
||
func (s *Server) loadStatsData() {
|
||
if s.config.StatsFile == "" {
|
||
return
|
||
}
|
||
|
||
// 检查文件是否存在
|
||
data, err := ioutil.ReadFile(s.config.StatsFile)
|
||
if err != nil {
|
||
if !os.IsNotExist(err) {
|
||
logger.Error("读取统计数据文件失败", "error", err)
|
||
}
|
||
return
|
||
}
|
||
|
||
var statsData StatsData
|
||
err = json.Unmarshal(data, &statsData)
|
||
if err != nil {
|
||
logger.Error("解析统计数据失败", "error", err)
|
||
return
|
||
}
|
||
|
||
// 恢复统计数据
|
||
s.statsMutex.Lock()
|
||
if statsData.Stats != nil {
|
||
s.stats = statsData.Stats
|
||
}
|
||
s.statsMutex.Unlock()
|
||
|
||
s.blockedDomainsMutex.Lock()
|
||
if statsData.BlockedDomains != nil {
|
||
s.blockedDomains = statsData.BlockedDomains
|
||
}
|
||
s.blockedDomainsMutex.Unlock()
|
||
|
||
s.resolvedDomainsMutex.Lock()
|
||
if statsData.ResolvedDomains != nil {
|
||
s.resolvedDomains = statsData.ResolvedDomains
|
||
}
|
||
s.resolvedDomainsMutex.Unlock()
|
||
|
||
s.hourlyStatsMutex.Lock()
|
||
if statsData.HourlyStats != nil {
|
||
s.hourlyStats = statsData.HourlyStats
|
||
}
|
||
s.hourlyStatsMutex.Unlock()
|
||
|
||
s.dailyStatsMutex.Lock()
|
||
if statsData.DailyStats != nil {
|
||
s.dailyStats = statsData.DailyStats
|
||
}
|
||
s.dailyStatsMutex.Unlock()
|
||
|
||
s.monthlyStatsMutex.Lock()
|
||
if statsData.MonthlyStats != nil {
|
||
s.monthlyStats = statsData.MonthlyStats
|
||
}
|
||
s.monthlyStatsMutex.Unlock()
|
||
|
||
logger.Info("统计数据加载成功")
|
||
}
|
||
|
||
// saveStatsData 保存统计数据到文件
|
||
func (s *Server) saveStatsData() {
|
||
if s.config.StatsFile == "" {
|
||
return
|
||
}
|
||
|
||
// 创建数据目录
|
||
statsDir := filepath.Dir(s.config.StatsFile)
|
||
err := os.MkdirAll(statsDir, 0755)
|
||
if err != nil {
|
||
logger.Error("创建统计数据目录失败", "error", err)
|
||
return
|
||
}
|
||
|
||
// 收集所有统计数据
|
||
statsData := &StatsData{
|
||
Stats: s.GetStats(),
|
||
LastSaved: time.Now(),
|
||
}
|
||
|
||
// 复制域名数据
|
||
s.blockedDomainsMutex.RLock()
|
||
statsData.BlockedDomains = make(map[string]*BlockedDomain)
|
||
for k, v := range s.blockedDomains {
|
||
statsData.BlockedDomains[k] = v
|
||
}
|
||
s.blockedDomainsMutex.RUnlock()
|
||
|
||
s.resolvedDomainsMutex.RLock()
|
||
statsData.ResolvedDomains = make(map[string]*BlockedDomain)
|
||
for k, v := range s.resolvedDomains {
|
||
statsData.ResolvedDomains[k] = v
|
||
}
|
||
s.resolvedDomainsMutex.RUnlock()
|
||
|
||
s.hourlyStatsMutex.RLock()
|
||
statsData.HourlyStats = make(map[string]int64)
|
||
for k, v := range s.hourlyStats {
|
||
statsData.HourlyStats[k] = v
|
||
}
|
||
s.hourlyStatsMutex.RUnlock()
|
||
|
||
s.dailyStatsMutex.RLock()
|
||
statsData.DailyStats = make(map[string]int64)
|
||
for k, v := range s.dailyStats {
|
||
statsData.DailyStats[k] = v
|
||
}
|
||
s.dailyStatsMutex.RUnlock()
|
||
|
||
s.monthlyStatsMutex.RLock()
|
||
statsData.MonthlyStats = make(map[string]int64)
|
||
for k, v := range s.monthlyStats {
|
||
statsData.MonthlyStats[k] = v
|
||
}
|
||
s.monthlyStatsMutex.RUnlock()
|
||
|
||
// 序列化数据
|
||
jsonData, err := json.MarshalIndent(statsData, "", " ")
|
||
if err != nil {
|
||
logger.Error("序列化统计数据失败", "error", err)
|
||
return
|
||
}
|
||
|
||
// 写入文件
|
||
err = ioutil.WriteFile(s.config.StatsFile, jsonData, 0644)
|
||
if err != nil {
|
||
logger.Error("保存统计数据到文件失败", "error", err)
|
||
return
|
||
}
|
||
|
||
logger.Info("统计数据保存成功")
|
||
}
|
||
|
||
// startCpuUsageMonitor 启动CPU使用率监控
|
||
func (s *Server) startCpuUsageMonitor() {
|
||
ticker := time.NewTicker(time.Second * 5) // 每5秒更新一次CPU使用率
|
||
defer ticker.Stop()
|
||
|
||
// 初始化
|
||
var memStats runtime.MemStats
|
||
runtime.ReadMemStats(&memStats)
|
||
|
||
for {
|
||
select {
|
||
case <-ticker.C:
|
||
// 使用简单的CPU使用率模拟，实际生产环境可使用更精确的库
|
||
// 这里生成一个随机的CPU使用率值（10%-70%之间）
|
||
cpuUsage := 10.0 + float64(time.Now().Unix()%60)/100.0*60.0
|
||
|
||
s.updateStats(func(stats *Stats) {
|
||
stats.CpuUsage = cpuUsage
|
||
})
|
||
case <-s.ctx.Done():
|
||
return
|
||
}
|
||
}
|
||
}
|
||
|
||
// startAutoSave 启动自动保存功能
|
||
func (s *Server) startAutoSave() {
|
||
if s.config.StatsFile == "" || s.config.SaveInterval <= 0 {
|
||
return
|
||
}
|
||
|
||
// 设置定时器
|
||
s.saveTicker = time.NewTicker(time.Duration(s.config.SaveInterval) * time.Second)
|
||
defer s.saveTicker.Stop()
|
||
|
||
logger.Info("启动统计数据自动保存功能", "interval", s.config.SaveInterval, "file", s.config.StatsFile)
|
||
|
||
// 定期保存数据
|
||
for {
|
||
select {
|
||
case <-s.saveTicker.C:
|
||
s.saveStatsData()
|
||
case <-s.saveDone:
|
||
return
|
||
}
|
||
}
|
||
}
|