lolibrary/lolibrary

package handler

import (
    "fmt"
    "net"

    "github.com/monzo/slog"
    "github.com/monzo/terrors"
    "github.com/monzo/typhon"
)

func handleAPI(req typhon.Request) typhon.Response {
    service, path, err := parsePath(req.URL.Path)
    if err != nil {
        slog.Debug(req, "Error parsing path: %v", err)
        return typhon.Response{Error: err}
    }

    if err := validateService(service); err != nil {
        slog.Error(req, "Unable to connect to %s: %v", service, err)
        return typhon.Response{Error: err}
    }

    req.Host = service
    req.URL.Host = service
    req.URL.Path = path
    req.URL.Scheme = "http"

    return typhon.Send(req).Response()
}

func validateService(service string) error {
    conn, err := net.Dial("tcp", fmt.Sprintf("%s:80", service))
    if err != nil {
        return terrors.NotFound("service", "Service not found", nil)
    }
    defer conn.Close()

    return nil
}