gistfile1.txt

package command

import (
	"flag"
	"fmt"
	"log"
	"net"
	"os"

	"code.google.com/p/go-uuid/uuid"
	"github.com/mitchellh/cli"
)

// Connection contains the session connection information
type Connection struct {
	sessionID     string
	hostname      string
	serverAddress string
}

// NewConnection method
func NewConnection() cli.CommandFactory {
	return func() (cli.Command, error) {
		return &Connection{
			sessionID: "",
			hostname:  "",
		}, nil
	}
}

// Run method initiates a new session with the scattermux server.
func (i *Connection) Run(args []string) int {

	// Implements flags for the 'start' option
	cmdFlags := flag.NewFlagSet("server", flag.ContinueOnError)
	cmdFlags.Usage = func() { i.Help() }
	cmdFlags.StringVar(&i.serverAddress, "server", "0.0.0.0", "The scattermux server address.")
	if err := cmdFlags.Parse(args); err != nil {
		return 1
	}

	// Getting new UUID
	u := uuid.NewUUID().String()
	if u == "" {
		log.Println("UUID could not be generated. Something went wrong.")
	}
	i.sessionID = u

	// Getting hostname
	n, err := os.Hostname()
	if err != nil {
		log.Println("Error: ", err)
		return 1
	}
	i.hostname = n

	// Verify server flag is valid
	ip := net.ParseIP(i.serverAddress)
	if ip == nil {
		fmt.Println("ERROR: ", i.serverAddress, "is not a valid IP.")
		return 1
	}

	fmt.Println("UUID Generated: ", i.sessionID) //just to verify the UUID
	fmt.Println("Hostname: ", i.hostname)
	fmt.Println(ip)

	return 0
}

// Help provides a full description of the command.
func (i *Connection) Help() string {
	return "Initiates a new session."
}

// Synopsis returns a brief description of the command.
func (i *Connection) Synopsis() string {
	return "Initiates a new session."
}