134 lines
3.1 KiB
Go
134 lines
3.1 KiB
Go
package main
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import (
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"context"
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"embed"
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"flag"
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"io"
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"io/fs"
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"log/slog"
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"net/http"
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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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"github.com/gin-gonic/gin"
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"zeromesh/internal/config"
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"zeromesh/internal/controller"
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"zeromesh/internal/database"
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"zeromesh/internal/router"
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)
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//go:embed web/dist/index.html web/dist/assets/*
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var webDist embed.FS
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func main() {
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cfgPath := flag.String("config", "config.yaml", "config file path")
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flag.Parse()
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cfg, err := config.Load(*cfgPath)
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if err != nil {
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slog.Error("load config", "err", err)
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os.Exit(1)
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}
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logLevel := new(slog.LevelVar)
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switch cfg.Logging.Level {
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case "debug":
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logLevel.Set(slog.LevelDebug)
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case "warn":
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logLevel.Set(slog.LevelWarn)
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case "error":
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logLevel.Set(slog.LevelError)
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default:
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logLevel.Set(slog.LevelInfo)
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}
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opts := &slog.HandlerOptions{Level: logLevel}
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var logHandler slog.Handler
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if cfg.Logging.Format == "json" {
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logHandler = slog.NewJSONHandler(os.Stderr, opts)
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} else {
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logHandler = slog.NewTextHandler(os.Stderr, opts)
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}
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logger := slog.New(logHandler)
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slog.SetDefault(logger)
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db, err := database.Init(&cfg.Database)
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if err != nil {
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slog.Error("init database", "err", err)
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os.Exit(1)
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}
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ctr, err := controller.New(cfg, db, logger)
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if err != nil {
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slog.Error("init controller", "err", err)
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os.Exit(1)
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}
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if err := ctr.Start(); err != nil {
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slog.Error("start controller", "err", err)
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os.Exit(1)
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}
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gin.SetMode(gin.ReleaseMode)
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ginEngine := router.Setup(cfg, db)
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webFS, _ := fs.Sub(webDist, "web/dist")
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// Wrap in a Handler that serves SPA before Gin gets a chance to redirect
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handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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p := r.URL.Path
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// Serve SPA for root and all non-API paths
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if p == "/" || p == "/index.html" {
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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data, err := webFS.Open("index.html")
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if err == nil {
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http.ServeContent(w, r, "index.html", time.Now(), data.(io.ReadSeeker))
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return
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}
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}
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if len(p) >= 8 && p[:8] == "/assets/" {
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assetFS, _ := fs.Sub(webDist, "web/dist/assets")
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http.StripPrefix("/assets", http.FileServer(http.FS(assetFS))).ServeHTTP(w, r)
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return
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}
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// API routes go to Gin
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if len(p) >= 4 && p[:4] == "/api" {
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ginEngine.ServeHTTP(w, r)
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return
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}
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// SPA fallback for all other routes
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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data, err := webFS.Open("index.html")
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if err == nil {
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http.ServeContent(w, r, "index.html", time.Now(), data.(io.ReadSeeker))
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return
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}
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ginEngine.ServeHTTP(w, r)
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})
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srv := &http.Server{
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Addr: cfg.Server.Addr(),
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Handler: handler,
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}
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go func() {
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slog.Info("server listening", "addr", srv.Addr)
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if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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slog.Error("serve", "err", err)
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}
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}()
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quit := make(chan os.Signal, 1)
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signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
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<-quit
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slog.Info("shutting down...")
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ctr.Stop()
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := srv.Shutdown(ctx); err != nil {
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slog.Error("shutdown", "err", err)
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}
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}
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