xfy
b444f5b1d7
- 提取 Run、generateConfig、printVersion 到 import.go - 删除冗长的中文注释，改为简洁英文 - 同步 Windows 版本的结构变化 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
400 lines
10 KiB
Go
400 lines
10 KiB
Go
//go:build !windows
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package app
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import (
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"fmt"
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"net"
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"os"
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"os/signal"
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"syscall"
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"time"
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"rua.plus/lolly/internal/config"
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"rua.plus/lolly/internal/http2"
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"rua.plus/lolly/internal/http3"
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"rua.plus/lolly/internal/logging"
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"rua.plus/lolly/internal/resolver"
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"rua.plus/lolly/internal/server"
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"rua.plus/lolly/internal/stream"
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"rua.plus/lolly/internal/variable"
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)
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// App manages the server lifecycle, including HTTP, HTTP/3, Stream servers and graceful upgrades.
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type App struct {
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resv resolver.Resolver
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cfg *config.Config
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srv *server.Server
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http3Srv *http3.Server
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http2Srv *http2.Server
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streamSrv *stream.Server
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upgradeMgr *server.UpgradeManager
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logger *logging.AppLogger
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cfgPath string
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pidFile string
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logFile string
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listeners []net.Listener
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}
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func NewApp(cfgPath string) *App {
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return &App{
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cfgPath: cfgPath,
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}
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}
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func (a *App) SetPidFile(path string) {
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a.pidFile = path
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}
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func (a *App) SetLogFile(path string) {
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a.logFile = path
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}
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// Run starts the application: loads config, creates servers, and handles signals.
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func (a *App) Run() int {
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cfg, err := config.Load(a.cfgPath)
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if err != nil {
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fmt.Fprintf(os.Stderr, "加载配置失败: %v\n", err)
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return 1
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}
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a.cfg = cfg
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a.logger = logging.NewAppLogger(&cfg.Logging)
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variable.SetGlobalVariables(cfg.Variables.Set)
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if len(cfg.Variables.Set) > 0 {
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a.logger.LogStartup("全局变量已加载", map[string]string{
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"count": fmt.Sprintf("%d", len(cfg.Variables.Set)),
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})
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}
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// Inherit parent listeners when running as a graceful upgrade child.
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if os.Getenv("GRACEFUL_UPGRADE") == "1" {
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a.logger.LogStartup("检测到热升级模式，继承父进程监听器", nil)
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a.upgradeMgr = server.NewUpgradeManager(nil)
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listeners, err := a.upgradeMgr.GetInheritedListeners()
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if err == nil && len(listeners) > 0 {
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a.listeners = listeners
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}
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}
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a.logger.LogStartup("配置加载成功", map[string]string{"config_path": a.cfgPath})
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mode := a.cfg.GetMode()
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if mode == config.ServerModeMultiServer {
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for i, srv := range a.cfg.Servers {
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a.logger.LogStartup("监听地址", map[string]string{
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"index": fmt.Sprintf("[%d]", i),
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"listen": srv.Listen,
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"name": srv.Name,
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})
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}
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} else {
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a.logger.LogStartup("监听地址", map[string]string{"listen": a.cfg.Servers[0].Listen})
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}
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if a.cfg.Resolver.Enabled {
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a.resv = resolver.New(&a.cfg.Resolver)
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a.logger.LogStartup("DNS 解析器已启用", map[string]string{
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"addresses": fmt.Sprintf("%v", a.cfg.Resolver.Addresses),
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"ttl": a.cfg.Resolver.TTL().String(),
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})
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}
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a.srv = server.New(a.cfg)
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if a.resv != nil {
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a.srv.SetResolver(a.resv)
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}
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if len(a.listeners) > 0 {
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a.srv.SetListeners(a.listeners)
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}
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if len(a.cfg.Stream) > 0 {
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a.streamSrv = stream.NewServer()
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for _, sc := range a.cfg.Stream {
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targets := make([]stream.TargetSpec, len(sc.Upstream.Targets))
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for i, t := range sc.Upstream.Targets {
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targets[i] = stream.TargetSpec{
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Addr: t.Addr,
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Weight: t.Weight,
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}
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}
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if err := a.streamSrv.AddUpstream(sc.Listen, targets, sc.Upstream.LoadBalance, stream.HealthCheckSpec{}); err != nil {
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a.logger.Error().Err(err).Msg("添加 Stream 上游失败")
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}
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if sc.Protocol == "udp" {
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if err := a.streamSrv.ListenUDP(sc.Listen, sc.Listen, 60*time.Second); err != nil {
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a.logger.Error().Err(err).Str("listen", sc.Listen).Msg("监听 UDP 失败")
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}
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} else {
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if err := a.streamSrv.ListenTCP(sc.Listen); err != nil {
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a.logger.Error().Err(err).Str("listen", sc.Listen).Msg("监听 TCP 失败")
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}
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}
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}
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go func() {
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a.logger.LogStartup("Stream 服务器启动中", nil)
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if err := a.streamSrv.Start(); err != nil {
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a.logger.Error().Err(err).Msg("Stream 服务器启动失败")
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}
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}()
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}
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if a.cfg.HTTP3.Enabled && a.cfg.Servers[0].SSL.Cert != "" {
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tlsConfig, err := a.srv.GetTLSConfig()
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if err != nil {
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a.logger.Error().Err(err).Msg("获取 TLS 配置失败，跳过 HTTP/3")
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} else {
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a.http3Srv, err = http3.NewServer(&a.cfg.HTTP3, a.srv.GetHandler(), tlsConfig)
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if err != nil {
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a.logger.Error().Err(err).Msg("创建 HTTP/3 服务器失败")
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} else {
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go func() {
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a.logger.LogStartup("HTTP/3 服务器启动中", map[string]string{"listen": a.cfg.HTTP3.Listen})
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if err := a.http3Srv.Start(); err != nil {
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a.logger.Error().Err(err).Msg("HTTP/3 服务器启动失败")
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}
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}()
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}
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}
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}
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if a.cfg.Servers[0].SSL.HTTP2.Enabled && a.cfg.Servers[0].SSL.Cert != "" {
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tlsConfig, err := a.srv.GetTLSConfig()
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if err != nil {
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a.logger.Error().Err(err).Msg("获取 TLS 配置失败，跳过 HTTP/2")
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} else {
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a.http2Srv, err = http2.NewServer(&a.cfg.Servers[0].SSL.HTTP2, a.srv.GetHandler(), tlsConfig)
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if err != nil {
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a.logger.Error().Err(err).Msg("创建 HTTP/2 服务器失败")
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} else {
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go func() {
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a.logger.LogStartup("HTTP/2 服务器启动中", map[string]string{
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"listen": a.cfg.Servers[0].Listen,
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"max_concurrent_streams": fmt.Sprintf("%d", a.cfg.Servers[0].SSL.HTTP2.MaxConcurrentStreams),
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"push_enabled": fmt.Sprintf("%t", a.cfg.Servers[0].SSL.HTTP2.PushEnabled),
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})
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// HTTP/2 shares the main server's listener; ALPN negotiates protocol selection.
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listeners := a.srv.GetListeners()
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if len(listeners) > 0 {
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if err := a.http2Srv.Serve(listeners[0]); err != nil {
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a.logger.Error().Err(err).Msg("HTTP/2 服务器启动失败")
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}
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} else {
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a.logger.Error().Msg("HTTP/2 服务器启动失败: 无可用监听器")
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}
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}()
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}
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}
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}
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a.upgradeMgr = server.NewUpgradeManager(a.srv)
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a.srv.SetUpgradeManager(a.upgradeMgr)
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if a.pidFile != "" {
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a.upgradeMgr.SetPidFile(a.pidFile)
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_ = a.upgradeMgr.WritePid()
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}
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sigChan := make(chan os.Signal, 1)
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a.setupSignalHandlers(sigChan)
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errChan := make(chan error, 1)
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go func() {
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a.logger.LogStartup("HTTP 服务器启动中", nil)
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if err := a.srv.Start(); err != nil {
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errChan <- err
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}
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}()
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sigintCount := 0
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for {
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select {
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case err := <-errChan:
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a.logger.Error().Err(err).Msg("服务器启动失败")
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return 1
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case sig := <-sigChan:
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if sig == syscall.SIGINT {
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sigintCount++
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if sigintCount >= 3 {
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a.logger.LogShutdown("收到 3 次 SIGINT，强制退出")
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return 1
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}
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}
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if !a.handleSignal(sig) {
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a.logger.LogShutdown("服务器已停止")
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return 0
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}
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}
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}
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}
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func (a *App) setupSignalHandlers(sigChan chan<- os.Signal) {
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signal.Notify(sigChan,
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syscall.SIGTERM,
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syscall.SIGINT,
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syscall.SIGQUIT,
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syscall.SIGHUP,
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syscall.SIGUSR1,
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syscall.SIGUSR2,
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)
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}
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// handleSignal returns false to indicate the app should exit.
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func (a *App) handleSignal(sig os.Signal) bool {
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if a.cfg == nil {
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a.logger.Error().Msg("信号处理失败: 配置为 nil，使用默认超时")
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a.cfg = &config.Config{
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Shutdown: config.ShutdownConfig{
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GracefulTimeout: 30 * time.Second,
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FastTimeout: 5 * time.Second,
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},
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}
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}
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switch sig {
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case syscall.SIGQUIT:
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timeout := a.cfg.Shutdown.GracefulTimeout
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if timeout <= 0 {
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timeout = 30 * time.Second
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}
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a.logger.LogSignal("SIGQUIT", fmt.Sprintf("优雅停止（等待 %v）", timeout))
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a.shutdownHTTP2()
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a.shutdownHTTP3()
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_ = a.srv.GracefulStop(timeout)
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return false
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case syscall.SIGTERM, syscall.SIGINT:
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timeout := a.cfg.Shutdown.FastTimeout
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if timeout <= 0 {
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timeout = 5 * time.Second
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}
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sigTyped, ok := sig.(syscall.Signal)
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if !ok {
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a.logger.LogSignal("unknown", "停止服务器")
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} else {
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a.logger.LogSignal(sigName(sigTyped), "停止服务器")
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}
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a.shutdownHTTP2()
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a.shutdownHTTP3()
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_ = a.srv.StopWithTimeout(timeout)
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return false
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case syscall.SIGHUP:
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a.logger.LogSignal("SIGHUP", "重载配置")
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a.reloadConfig()
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return true
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case syscall.SIGUSR1:
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a.logger.LogSignal("SIGUSR1", "重新打开日志")
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a.reopenLogs()
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return true
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case syscall.SIGUSR2:
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a.logger.LogSignal("SIGUSR2", "执行热升级")
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a.gracefulUpgrade()
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return true
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default:
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a.logger.Info().Str("signal", sig.String()).Msg("收到未知信号")
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return true
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}
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}
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func (a *App) shutdownHTTP3() {
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if a.http3Srv != nil {
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if err := a.http3Srv.Stop(); err != nil {
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a.logger.Error().Err(err).Msg("HTTP/3 服务器关闭失败")
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}
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}
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}
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func (a *App) shutdownHTTP2() {
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if a.http2Srv != nil {
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if err := a.http2Srv.Stop(); err != nil {
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a.logger.Error().Err(err).Msg("HTTP/2 服务器关闭失败")
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}
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}
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}
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func (a *App) reloadConfig() {
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newCfg, err := config.Load(a.cfgPath)
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if err != nil {
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a.logger.Error().Err(err).Msg("重载配置失败")
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return
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}
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a.cfg = newCfg
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a.logger = logging.NewAppLogger(&newCfg.Logging)
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a.logger.LogStartup("配置重载成功", nil)
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}
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func (a *App) reopenLogs() {
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if a.cfg != nil {
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logging.Init(a.cfg.Logging.Error.Level, a.cfg.Logging.Format)
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a.logger = logging.NewAppLogger(&a.cfg.Logging)
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}
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a.logger.LogStartup("日志已重新打开", nil)
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}
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func (a *App) gracefulUpgrade() {
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execPath, err := os.Executable()
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if err != nil {
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a.logger.Error().Err(err).Msg("获取可执行文件路径失败")
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return
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}
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if a.srv == nil {
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a.logger.Error().Msg("热升级失败: 服务器实例为 nil")
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return
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}
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listeners := a.srv.GetListeners()
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if len(listeners) == 0 {
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a.logger.Error().Msg("热升级失败: 服务器未保存监听器（热升级当前未完全实现）")
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a.logger.Info().Msg("提示: 热升级需要服务器使用手动监听器管理模式")
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return
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}
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a.upgradeMgr.SetListeners(listeners)
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if err := a.upgradeMgr.GracefulUpgrade(execPath); err != nil {
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a.logger.Error().Err(err).Msg("热升级失败")
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return
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}
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a.logger.LogStartup("热升级已启动，新进程正在接管", nil)
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timeout := a.cfg.Shutdown.GracefulTimeout
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if timeout <= 0 {
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timeout = 30 * time.Second
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}
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a.shutdownHTTP2()
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a.shutdownHTTP3()
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_ = a.srv.GracefulStop(timeout)
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}
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func sigName(sig syscall.Signal) string {
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//nolint:exhaustive // Only handling app-relevant signals.
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switch sig {
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case syscall.SIGTERM:
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return "SIGTERM"
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case syscall.SIGINT:
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return "SIGINT"
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case syscall.SIGQUIT:
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return "SIGQUIT"
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case syscall.SIGHUP:
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return "SIGHUP"
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case syscall.SIGUSR1:
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return "SIGUSR1"
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case syscall.SIGUSR2:
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return "SIGUSR2"
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default:
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return fmt.Sprintf("Signal(%d)", sig)
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}
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}
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