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Merge pull request #57 from fkautz/pr_out_merging_encode_and_decode_to_single_minio_demo_binary
Merging encode and decode to single minio-demo binary
This commit is contained in:
Harshavardhana
commit
07e1199ae1
3
Makefile
3
Makefile
@ -13,8 +13,7 @@ test: build-erasure build-signify
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godep go test -race -coverprofile=cover.out github.com/minio-io/minio/pkgs/gateway
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install: build-erasure
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godep go install github.com/minio-io/minio/cmd/minio-encode
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godep go install github.com/minio-io/minio/cmd/minio-decode
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godep go install github.com/minio-io/minio/cmd/minio-demo
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save:
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godep save ./...
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@ -1,90 +0,0 @@
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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/pkgs/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-decode"
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app.Usage = "erasure decode 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 chunks
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chunks := make([][]byte, k+m)
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for i := 0; i < k+m; i++ {
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chunks[i], _ = ioutil.ReadFile(inputFilePath + "." + strconv.Itoa(i))
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}
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// get length
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lengthBytes, err := ioutil.ReadFile(inputFilePath + ".length")
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if err != nil {
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log.Fatal(err)
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}
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lengthString := string(lengthBytes)
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length, err := strconv.Atoi(lengthString)
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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.ParseEncoderParams(k, m, erasure.CAUCHY)
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// decode data
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decodedData, err := erasure.Decode(chunks, erasureParameters, length)
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if err != nil {
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log.Fatal(err)
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}
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// write decode data out
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ioutil.WriteFile(outputFilePath, decodedData, 0600)
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}
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app.Run(os.Args)
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}
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78
cmd/minio-demo/decode.go
Normal file
78
cmd/minio-demo/decode.go
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@ -0,0 +1,78 @@
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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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"strings"
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"github.com/codegangsta/cli"
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"github.com/minio-io/minio/pkgs/erasure"
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)
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func decode(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.ShowCommandHelp(c, "decode")
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return
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}
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// get input path
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inputFilePath := c.Args().Get(0)
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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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protectionLevel := c.String("protection-level")
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protectionLevelSplit := strings.Split(protectionLevel, ",")
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if len(protectionLevelSplit) != 2 {
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log.Fatal("Malformed input for protection-level")
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}
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k, err := strconv.Atoi(protectionLevelSplit[0])
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if err != nil {
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log.Fatal(err)
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}
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m, err := strconv.Atoi(protectionLevelSplit[1])
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if err != nil {
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log.Fatal(err)
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}
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// get chunks
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chunks := make([][]byte, k+m)
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for i := 0; i < k+m; i++ {
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chunks[i], _ = ioutil.ReadFile(inputFilePath + "." + strconv.Itoa(i))
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}
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// get length
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lengthBytes, err := ioutil.ReadFile(inputFilePath + ".length")
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if err != nil {
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log.Fatal(err)
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}
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lengthString := string(lengthBytes)
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length, err := strconv.Atoi(lengthString)
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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.ParseEncoderParams(k, m, erasure.CAUCHY)
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// decode data
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decodedData, err := erasure.Decode(chunks, erasureParameters, length)
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if err != nil {
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log.Fatal(err)
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}
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// write decode data out
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if _, err := os.Stat(outputFilePath); os.IsNotExist(err) {
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ioutil.WriteFile(outputFilePath, decodedData, 0600)
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} else {
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log.Fatal("Output file already exists")
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}
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}
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68
cmd/minio-demo/encode.go
Normal file
68
cmd/minio-demo/encode.go
Normal file
@ -0,0 +1,68 @@
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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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"strings"
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"github.com/codegangsta/cli"
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"github.com/minio-io/minio/pkgs/erasure"
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)
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func encode(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.ShowCommandHelp(c, "encode")
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return
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}
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// get input path
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inputFilePath := c.Args().Get(0)
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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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protectionLevel := c.String("protection-level")
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protectionLevelSplit := strings.Split(protectionLevel, ",")
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if len(protectionLevelSplit) != 2 {
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log.Fatal("Malformed input for protection-level")
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}
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k, err := strconv.Atoi(protectionLevelSplit[0])
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if err != nil {
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log.Fatal(err)
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}
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m, err := strconv.Atoi(protectionLevelSplit[1])
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if err != nil {
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log.Fatal(err)
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}
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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.ParseEncoderParams(k, m, erasure.CAUCHY)
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// encode data
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encodedData, length := erasure.Encode(input, erasureParameters)
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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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ioutil.WriteFile(outputFilePath+".length", []byte(strconv.Itoa(length)), 0600)
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}
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50
cmd/minio-demo/main.go
Normal file
50
cmd/minio-demo/main.go
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@ -0,0 +1,50 @@
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package main
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import (
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"os"
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"github.com/codegangsta/cli"
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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.Commands = []cli.Command{
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{
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Name: "encode",
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Usage: "erasure encode a byte stream",
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Action: encode,
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Flags: []cli.Flag{
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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.StringFlag{
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Name: "protection-level",
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Value: "10,5",
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Usage: "data,parity",
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},
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},
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},
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{
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Name: "decode",
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Usage: "erasure decode a byte stream",
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Action: decode,
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Flags: []cli.Flag{
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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.StringFlag{
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Name: "protection-level",
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Value: "10,5",
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Usage: "data,parity",
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},
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},
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},
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}
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app.Run(os.Args)
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}
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@ -1,84 +0,0 @@
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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/pkgs/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.ParseEncoderParams(k, m, erasure.CAUCHY)
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// encode data
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encodedData, length := erasure.Encode(input, erasureParameters)
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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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ioutil.WriteFile(outputFilePath+".length", []byte(strconv.Itoa(length)), 0600)
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}
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app.Run(os.Args)
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}
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