func ExampleCopyFile() {
s := "This is a test of the util.CopyFile() function."
t1 := path.Join(path.Dir(os.Args[0]), "test1.txt")
t2 := path.Join(path.Dir(os.Args[0]), "test2.txt")
err := ioutil.WriteFile(t1, []byte(s), os.FileMode(0666))
if err != nil {
log.Fatal(err)
}
err = util.CopyFile(t2, t1)
if err != nil {
log.Fatal(err)
}
b, err := ioutil.ReadFile(t2)
if err != nil {
log.Fatal(err)
}
err = os.Remove(t1)
if err != nil {
log.Fatal(err)
}
err = os.Remove(t2)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s\n", string(b))
// Output: This is a test of the util.CopyFile() function.
}
func (this *FsStore) PersistOffset(fileName string, offset int64) {
//persist worker's offset
path := fileName + ".tmp"
fout, error := os.Create(path)
if error != nil {
log.Error(path, error)
return
}
defer fout.Close()
log.Debug("saved offset:", fileName, ":", offset)
fout.Write([]byte(strconv.FormatInt(offset, 10)))
util.CopyFile(path, fileName)
}