/
utils.go
90 lines (81 loc) · 1.48 KB
/
utils.go
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package main
import (
"io/ioutil"
"net"
"os"
"os/user"
"path/filepath"
"strconv"
"time"
)
const (
defaultTimeout = 5 * time.Second
)
func isExists(path string) bool {
_, err := os.Stat(path)
if err != nil {
if os.IsExist(err) {
return true
}
return false
}
return true
}
func getHomeDir() string {
usr, err := user.Current()
if err != nil {
panic(err)
}
return usr.HomeDir
}
func isRoot() bool {
usr, err := user.Current()
if err != nil {
panic(err)
}
if usr.Username == "root" {
return true
}
return false
}
func getDirSizeMB(path string) float64 {
var dirSize int64 = 0
readSize := func(path string, file os.FileInfo, err error) error {
if !file.IsDir() {
dirSize += file.Size()
}
return nil
}
filepath.Walk(path, readSize)
sizeMB := float64(dirSize) / 1024.0 / 1024.0
return sizeMB
}
func isPortOpen(port string, timeout time.Duration) bool {
conn, _ := net.DialTimeout("tcp", net.JoinHostPort("", port), timeout)
if conn != nil {
conn.Close()
return false
}
return true
}
func findNextOpenPort(port int) string {
var hasFound bool = false
var strPort string
for ; !hasFound; port++ {
strPort = strconv.Itoa(port)
if isPortOpen(strPort, defaultTimeout) {
hasFound = true
}
}
return strPort
}
func readFileContent(filename string) string {
var content string
byte_content, err := ioutil.ReadFile(filename)
if err != nil {
content = "Read " + filename + "Failed!"
} else {
content = string(byte_content)
}
return content
}