minio/cmd/erasure-demo/encode.go
2014-11-30 22:18:23 -08:00

48 lines
950 B
Go

package main
import (
"io/ioutil"
"log"
"os"
"strconv"
"github.com/codegangsta/cli"
"github.com/minio-io/minio/pkgs/erasure"
)
func encode(c *cli.Context) {
// check if minio-encode called without parameters
if len(c.Args()) != 1 {
cli.ShowCommandHelp(c, "encode")
return
}
config, err := parseInput(c)
if err != nil {
log.Fatal(err)
}
// get file
inputFile, err := os.Open(config.input)
if err != nil {
log.Fatal(err)
}
// read file
input, err := ioutil.ReadAll(inputFile)
if err != nil {
log.Fatal(err)
}
// set up encoder
erasureParameters, _ := erasure.ParseEncoderParams(config.k, config.m, erasure.CAUCHY)
// encode data
encodedData, length := erasure.Encode(input, erasureParameters)
// write encoded data out
for key, data := range encodedData {
ioutil.WriteFile(config.output+"."+strconv.Itoa(key), data, 0600)
}
ioutil.WriteFile(config.output+".length", []byte(strconv.Itoa(length)), 0600)
}