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