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main.go
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main.go
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package main
import (
"context"
"database/sql"
"embed"
"log/slog"
"net/http"
"os"
"os/signal"
"qbart/pgvector/internal/documents"
"qbart/pgvector/web"
"syscall"
_ "embed"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
"github.com/pressly/goose/v3"
"github.com/uptrace/bun"
"github.com/uptrace/bun/dialect/pgdialect"
"github.com/uptrace/bun/driver/pgdriver"
)
var (
//go:embed assets/images/logo.svg
logo []byte
//go:embed ui/style.css
style []byte
//go:embed db/migrations/*.sql
migrations embed.FS
)
func main() {
sqldb := sql.OpenDB(pgdriver.NewConnector(pgdriver.WithDSN(os.Getenv("DATABASE_URL"))))
db := bun.NewDB(sqldb, pgdialect.New())
err := db.Ping()
if err != nil {
slog.Error("db ping", "message", err.Error())
panic(err)
}
defer db.Close()
goose.SetBaseFS(migrations)
if err := goose.SetDialect("postgres"); err != nil {
slog.Error("goose set dialect", "message", err.Error())
panic(err)
}
if err := goose.Up(sqldb, "db/migrations"); err != nil {
slog.Error("goose up", "message", err.Error())
panic(err)
}
renderer := &web.Renderer{}
openAI, err := documents.NewOpenAI(os.Getenv("OPENAI_API_KEY"))
if err != nil {
slog.Error("openai init failed", "message", err.Error())
panic(err)
}
documentsSvc := documents.NewService(db, openAI)
documentsHandler := &documents.HttpHandler{
Documents: documentsSvc,
Renderer: renderer,
}
r := chi.NewRouter()
// NOTE: this demo application is not production-ready,
// in order to keept it simple, security features are omitted.
r.Use(middleware.RequestID)
r.Use(middleware.Heartbeat("/health/live"))
r.Use(middleware.Logger)
r.Use(middleware.Recoverer)
r.Get("/favicon.svg", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "image/svg+xml")
w.Header().Set("Cache-Control", "public, max-age=7776000")
w.Write(logo)
})
r.Get("/static/style.css", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/css")
w.Header().Set("Cache-Control", "no-cache")
w.Write(style)
})
r.Get("/static/logo.svg", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "image/svg+xml")
w.Header().Set("Cache-Control", "public, max-age=7776000")
w.Write(logo)
})
r.Get("/", func(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, "/documents", http.StatusFound)
})
r.Get("/documents", documentsHandler.DocumentsIndex)
r.Post("/documents", documentsHandler.DocumentsCreate)
server := &http.Server{Addr: ":3000", Handler: r}
notifyCtx, stop := signal.NotifyContext(context.Background(), syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
defer stop()
go func() {
err := server.ListenAndServe()
if err != nil && err != http.ErrServerClosed {
slog.Error("server listen and serve", "message", err.Error())
panic(err)
}
}()
<-notifyCtx.Done()
server.Shutdown(context.Background())
}