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main.go
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main.go
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package main
import (
"log"
//"encoding/json"
"github.com/fsnotify/fsnotify"
"fmt"
"os"
"strings"
"os/exec"
"bufio"
"bytes"
)
var (
explode []int
dirs []string
source string
mode string
remote bool
dest string
sources Sources
configFile string = "/etc/inotisync/inotisync.conf"
logFile = "/var/log/inotisync.log"
ctr int
destDir string
)
type Sources struct {
Sync []Sync
}
type Sync struct {
Source string
Destinations []string
}
func (s Sources) syncInit() {
for i := 0; i < len(s.Sync); i++ {
for j := 0; j < len(s.Sync[i].Destinations); j++ {
// Check if destination is remote or not
// Check for the existence of the ":" character
if strings.ContainsAny(s.Sync[i].Destinations[j], ":") {
_, err := exec.Command("rsync", "-avzS", s.Sync[i].Source, s.Sync[i].Destinations[j]).Output()
check("Can't copy", err)
} else {
cmd := exec.Command("/bin/sh", "-c", "cp -Rp " + s.Sync[i].Source + "*" + " " + s.Sync[i].Destinations[j])
stdoutErr, err := cmd.CombinedOutput()
if(err != nil) {
log.Println("Can't copy")
log.Println(err)
log.Printf("%s\n", stdoutErr)
}
}
}
}
}
func Watcher() {
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatal(err)
}
defer watcher.Close()
done := make(chan bool, 1)
go func() {
for {
select {
case event := <-watcher.Events:
// Find which [sync] the file belongs to
for i:= 0; i < len(sources.Sync); i++ {
if strings.HasPrefix(event.Name, sources.Sync[i].Source) {
ctr = i
}
}
// Get file name
explode := strings.Split(event.Name, "/")
fileName := explode[len(explode) - 1]
// Loop through destinations
for _, dest := range sources.Sync[ctr].Destinations {
destPath := strings.Replace(event.Name, sources.Sync[ctr].Source, dest, -1)
destDir = strings.Replace(destPath, fileName, "", -1)
// File or folder has been deleted
if event.Op&fsnotify.Remove == fsnotify.Remove || event.Op&fsnotify.Rename == fsnotify.Rename {
if(!isRemoteDestination(destPath)) {
err := os.Remove(destPath)
check("Can't delete " + destPath + "\n", err)
}
// File or folder has been created, modified
} else {
// Local destination. Use CP
if(!isRemoteDestination(destPath)) {
//destPath = destPath + "/"
log.Println("Event: ", event.Name)
log.Println("Dest: ", destPath)
file, err := os.Stat(event.Name)
checkFatal(err)
// Path is a directory
if file.Mode().IsDir() {
err = os.Mkdir(destPath, 0755)
check("Can't create directory\n", err)
err = watcher.Add(event.Name)
check("Can't add to watcher'n",err)
// Path is a file
} else {
log.Println("Source: ", source, "Dest :", destPath, "Dest Dir: ", destDir)
err = os.MkdirAll(destDir, 0755)
check("Can't create directories'n", err)
_, err := exec.Command("/bin/cp", "-p", event.Name, destPath).Output()
if(err != nil) {
log.Println("Can't copy")
log.Println(err)
}
}
// Remote destination. Use rsync
} else {
_, err := exec.Command("rsync", "-avzS", event.Name, destPath).Output()
log.Println("Doing rsync:", event.Name, destPath)
if(err != nil) {
log.Println("Rsync error")
log.Println(err)
}
}
}
}
case err := <-watcher.Errors:
log.Println("error:", err)
}
}
}()
dirs, err := readLines("dirs")
for _, el := range dirs {
err = watcher.Add(el)
}
check("Can't add to watcher\n", err)
<-done
}
func isRemoteDestination(destPath string) bool {
if strings.ContainsAny(destPath, ":") {
return true
}
return false
}
// Obsolete
// func findSourceDirs() []string {
// // Check if source path exists and is a directory
// file, err := os.Stat(source)
// if(err != nil) {
// fmt.Println("Directory doesn't exist. Attempting to create now")
// err = os.Mkdir(source, 0755)
// if(err != nil) {
// panic(err)
// }
// } else if(file.Mode().IsRegular()) {
// panic("Source path is not a directory. It's a regular file.")
// }
// cmd := exec.Command("find", source, "-type", "d")
// var out bytes.Buffer
// var stderr bytes.Buffer
// cmd.Stdout = &out
// cmd.Stderr = &stderr
// err = cmd.Run()
// if(err != nil) {
// log.Fatal(fmt.Sprint(err) + ": " + stderr.String())
// }
// f, err := os.Create("dirs")
// checkFatal(err)
// _, err = f.Write(out.Bytes())
// checkFatal(err)
// return nil
// }
func (s Sources) findSources() {
f, err := os.Create("dirs")
checkFatal(err)
err = f.Truncate(0)
for _, v := range s.Sync {
file, err := os.Stat(v.Source)
if(err != nil) {
fmt.Println("Directory doesn't exist. Attempting to create now")
err = os.Mkdir(source, 0755)
}
if(err != nil) {
panic(err)
} else if(file.Mode().IsRegular()) {
panic("Source path is not a directory. It's a regular file.")
}
fmt.Println("Looking for directories in ", v.Source)
cmd := exec.Command("find", v.Source, "-type", "d")
var out bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &stderr
err = cmd.Run()
if(err != nil) {
log.Fatal(fmt.Sprint(err) + ": " + stderr.String())
}
_, err = f.Write(out.Bytes())
checkFatal(err)
}
}
func readLines(path string) ([]string, error) {
file, err := os.Open(path)
if err != nil {
return nil, err
}
defer file.Close()
var lines []string
scanner := bufio.NewScanner(file)
for scanner.Scan() {
lines = append(lines, scanner.Text())
}
return lines, scanner.Err()
}
func writeLines(lines []string, path string) error {
file, err := os.Create(path)
if err != nil {
return err
}
defer file.Close()
w := bufio.NewWriter(file)
for _, line := range lines {
fmt.Fprintln(w, line)
}
return w.Flush()
}
func main() {
f, err := os.OpenFile(logFile, os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatal("Cannot open file: %v", err)
}
defer f.Close()
log.SetOutput(f)
sources.readConf()
sources.findSources()
Watcher()
}