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minio/cmd/minio-encode/main.go

72 lines
1.4 KiB

package main
import (
"io/ioutil"
"log"
"os"
"strconv"
"github.com/codegangsta/cli"
"github.com/minio-io/minio/erasure"
)
func main() {
app := cli.NewApp()
app.Name = "minio-encode"
app.Usage = "erasure encode a byte stream"
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "input,i",
Value: "",
Usage: "Input file",
},
cli.StringFlag{
Name: "output,o",
Value: "",
Usage: "Output file",
},
}
app.Action = func(c *cli.Context) {
// check if minio-encode called without parameters
if len(c.Args()) == 1 {
cli.ShowAppHelp(c)
}
// get input path
if c.String("input") == "" {
log.Fatal("No input specified")
}
inputFilePath := c.String("input")
// get output path
outputFilePath := inputFilePath
if c.String("output") != "" {
outputFilePath = c.String("output")
}
// get file
inputFile, err := os.Open(inputFilePath)
if err != nil {
log.Fatal(err)
}
// read file
input, err := ioutil.ReadAll(inputFile)
if err != nil {
log.Fatal(err)
}
// set up encoder
erasureParameters, _ := erasure.ValidateParams(10, 5, 8, erasure.CAUCHY)
encoder := erasure.NewEncoder(erasureParameters)
// encode data
encodedData, _ := encoder.Encode(input)
// write encoded data out
for key, data := range encodedData {
ioutil.WriteFile(outputFilePath+"."+strconv.Itoa(key), data, 0600)
}
}
app.Run(os.Args)
}