package main import ( "database/sql" "fmt" "log" "net/http" "os" _ "github.com/lib/pq" ) func main() { port := os.Getenv("PORT") if port == "" { log.Fatalf("please set PORT") } pgConn := os.Getenv("PGCONN") if pgConn == "" { log.Fatalf("please set PGCONN") } _, err := sql.Open("postgres", pgConn) if err != nil { log.Fatal(err) } bind := fmt.Sprintf(":%s", port) log.Printf("listening on %s", bind) if err := http.ListenAndServe(bind, nil); err != nil { log.Fatalf("listen: %s", err) } }