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main.go
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main.go
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package main
import (
"log"
"net/http"
"time"
"github.com/caarlos0/env/v6"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
"github.com/oschwald/geoip2-golang"
)
type config struct {
Port string `env:"PORT" envDefault:"8080"`
GeoLite2ASNPath string `env:"GEOLITE_ASN_PATH" envDefault:"GeoLite2/GeoLite2-ASN.mmdb"`
GeoLite2CityPath string `env:"GEOLITE_CITY_PATH" envDefault:"GeoLite2/GeoLite2-City.mmdb"`
WhoisTimeout time.Duration `env:"WHOIS_TIMEOUT" envDefault:"5s"`
}
func main() {
cfg := config{}
if err := env.Parse(&cfg); err != nil {
log.Fatal(err)
}
dbASN, err := geoip2.Open(cfg.GeoLite2ASNPath)
if err != nil {
log.Println(err)
}
dbCity, err := geoip2.Open(cfg.GeoLite2CityPath)
if err != nil {
log.Println(err)
}
r := chi.NewRouter()
r.Use(middleware.Logger)
r.Use(middleware.RealIP)
r.Use(middleware.Recoverer)
r.Use(middleware.Timeout(60 * time.Second))
srv := server{
router: r,
dbASN: dbASN,
dbCity: dbCity,
whois: &WhoisClient{},
}
srv.routes()
log.Printf("Starting server on port %s", cfg.Port)
if err := http.ListenAndServe(":"+cfg.Port, srv.router); err != nil {
log.Fatal(err)
}
}