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refactoring code

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reusable code by go clients
This commit is contained in:
Chris Lu 2013-08-13 23:26:51 -07:00
parent f7c1a15ad1
commit d5e7c1de0a
5 changed files with 145 additions and 104 deletions
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40
go/operation/assign_file_id.go Normal file
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@ -0,0 +1,40 @@
package operation
import (
"code.google.com/p/weed-fs/go/glog"
"code.google.com/p/weed-fs/go/util"
"encoding/json"
"errors"
"net/url"
"strconv"
)
type AssignResult struct {
Fid string `json:"fid"`
Url string `json:"url"`
PublicUrl string `json:"publicUrl"`
Count int
Error string `json:"error"`
}
func Assign(server string, count int, replication string) (*AssignResult, error) {
values := make(url.Values)
values.Add("count", strconv.Itoa(count))
if replication != "" {
values.Add("replication", replication)
}
jsonBlob, err := util.Post("http://"+server+"/dir/assign", values)
glog.V(2).Info("assign result :", string(jsonBlob))
if err != nil {
return nil, err
}
var ret AssignResult
err = json.Unmarshal(jsonBlob, &ret)
if err != nil {
return nil, err
}
if ret.Count <= 0 {
return nil, errors.New(ret.Error)
}
return &ret, nil
}

91
go/operation/submit.go Normal file
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@ -0,0 +1,91 @@
package operation
import (
"code.google.com/p/weed-fs/go/glog"
"io"
"mime"
"os"
"path"
"path/filepath"
"strconv"
"strings"
)
type SubmitResult struct {
FileName string `json:"fileName"`
FileUrl string `json:"fileUrl"`
Fid string `json:"fid"`
Size int `json:"size"`
Error string `json:"error"`
}
func Submit(master string, reader io.Reader, replication string) (result SubmitResult, err error) {
assignResult, assignError := Assign(master, 1, replication)
if assignError != nil {
result.Error = assignError.Error()
return
}
url := "http://" + assignResult.PublicUrl + "/" + assignResult.Fid
uploadResult, uploadError := Upload(url, "", reader, false, "")
if uploadError != nil {
result.Error = uploadError.Error()
return
}
result.Size = uploadResult.Size
result.FileUrl = url
result.Fid = assignResult.Fid
return result, nil
}
func SubmitFiles(master string, files []string, replication string) ([]SubmitResult, error) {
results := make([]SubmitResult, len(files))
for index, file := range files {
results[index].FileName = file
}
ret, err := Assign(master, len(files), replication)
if err != nil {
for index, _ := range files {
results[index].Error = err.Error()
}
return results, err
}
for index, file := range files {
fid := ret.Fid
if index > 0 {
fid = fid + "_" + strconv.Itoa(index)
}
results[index].Size, err = upload(file, ret.PublicUrl, fid)
if err != nil {
fid = ""
results[index].Error = err.Error()
}
results[index].Fid = fid
results[index].FileUrl = ret.PublicUrl + "/" + fid
}
return results, nil
}
func upload(filename string, server string, fid string) (int, error) {
glog.V(2).Info("Start uploading file:", filename)
fh, err := os.Open(filename)
if err != nil {
glog.V(0).Info("Failed to open file: ", filename)
return 0, err
}
fi, fiErr := fh.Stat()
if fiErr != nil {
glog.V(0).Info("Failed to stat file:", filename)
return 0, fiErr
}
filename = path.Base(filename)
isGzipped := path.Ext(filename) == ".gz"
if isGzipped {
filename = filename[0 : len(filename)-3]
}
mtype := mime.TypeByExtension(strings.ToLower(filepath.Ext(filename)))
ret, e := Upload("http://"+server+"/"+fid+"?ts="+strconv.Itoa(int(fi.ModTime().Unix())), filename, fh, isGzipped, mtype)
if e != nil {
return 0, e
}
return ret.Size, e
}

12
go/operation/upload_content.go
View File

@ -2,12 +2,12 @@ package operation
import (
"bytes"
"code.google.com/p/weed-fs/go/glog"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"code.google.com/p/weed-fs/go/glog"
"mime"
"mime/multipart"
"net/http"
@ -24,6 +24,12 @@ type UploadResult struct {
var fileNameEscaper = strings.NewReplacer("\\", "\\\\", "\"", "\\\"")
func Upload(uploadUrl string, filename string, reader io.Reader, isGzipped bool, mtype string) (*UploadResult, error) {
return upload_content(uploadUrl, func(w io.Writer) (err error) {
_, err = io.Copy(w, reader)
return
}, filename, isGzipped, mtype)
}
func upload_content(uploadUrl string, fillBufferFunction func(w io.Writer) error, filename string, isGzipped bool, mtype string) (*UploadResult, error) {
body_buf := bytes.NewBufferString("")
body_writer := multipart.NewWriter(body_buf)
h := make(textproto.MIMEHeader)
@ -31,7 +37,9 @@ func Upload(uploadUrl string, filename string, reader io.Reader, isGzipped bool,
if mtype == "" {
mtype = mime.TypeByExtension(strings.ToLower(filepath.Ext(filename)))
}
if mtype != "" {
h.Set("Content-Type", mtype)
}
if isGzipped {
h.Set("Content-Encoding", "gzip")
}
@ -40,7 +48,7 @@ func Upload(uploadUrl string, filename string, reader io.Reader, isGzipped bool,
glog.V(0).Infoln("error creating form file", err)
return nil, err
}
if _, err = io.Copy(file_writer, reader); err != nil {
if err = fillBufferFunction(file_writer); err != nil {
glog.V(0).Infoln("error copying data", err)
return nil, err
}

2
go/weed/master.go
View File

@ -257,7 +257,7 @@ func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl st
}
debug("assigning file id for", fname)
assignResult, ae := Assign(masterUrl, 1)
assignResult, ae := operation.Assign(masterUrl, 1, r.FormValue("replication"))
if ae != nil {
writeJsonError(w, r, ae)
return

102
go/weed/upload.go
View File

@ -2,17 +2,10 @@ package main
import (
"code.google.com/p/weed-fs/go/operation"
"code.google.com/p/weed-fs/go/util"
"encoding/json"
"errors"
"fmt"
"mime"
"net/url"
"os"
"path"
"path/filepath"
"strconv"
"strings"
)
var (
@ -50,97 +43,6 @@ var cmdUpload = &Command{
`,
}
type AssignResult struct {
Fid string `json:"fid"`
Url string `json:"url"`
PublicUrl string `json:"publicUrl"`
Count int
Error string `json:"error"`
}
func Assign(server string, count int) (*AssignResult, error) {
values := make(url.Values)
values.Add("count", strconv.Itoa(count))
if *uploadReplication != "" {
values.Add("replication", *uploadReplication)
}
jsonBlob, err := util.Post("http://"+server+"/dir/assign", values)
debug("assign result :", string(jsonBlob))
if err != nil {
return nil, err
}
var ret AssignResult
err = json.Unmarshal(jsonBlob, &ret)
if err != nil {
return nil, err
}
if ret.Count <= 0 {
return nil, errors.New(ret.Error)
}
return &ret, nil
}
func upload(filename string, server string, fid string) (int, error) {
debug("Start uploading file:", filename)
fh, err := os.Open(filename)
if err != nil {
debug("Failed to open file:", filename)
return 0, err
}
fi, fiErr := fh.Stat()
if fiErr != nil {
debug("Failed to stat file:", filename)
return 0, fiErr
}
filename = path.Base(filename)
isGzipped := path.Ext(filename) == ".gz"
if isGzipped {
filename = filename[0 : len(filename)-3]
}
mtype := mime.TypeByExtension(strings.ToLower(filepath.Ext(filename)))
ret, e := operation.Upload("http://"+server+"/"+fid+"?ts="+strconv.Itoa(int(fi.ModTime().Unix())), filename, fh, isGzipped, mtype)
if e != nil {
return 0, e
}
return ret.Size, e
}
type SubmitResult struct {
FileName string `json:"fileName"`
FileUrl string `json:"fileUrl"`
Fid string `json:"fid"`
Size int `json:"size"`
Error string `json:"error"`
}
func submit(files []string) ([]SubmitResult, error) {
results := make([]SubmitResult, len(files))
for index, file := range files {
results[index].FileName = file
}
ret, err := Assign(*server, len(files))
if err != nil {
for index, _ := range files {
results[index].Error = err.Error()
}
return results, err
}
for index, file := range files {
fid := ret.Fid
if index > 0 {
fid = fid + "_" + strconv.Itoa(index)
}
results[index].Size, err = upload(file, ret.PublicUrl, fid)
if err != nil {
fid = ""
results[index].Error = err.Error()
}
results[index].Fid = fid
results[index].FileUrl = ret.PublicUrl + "/" + fid
}
return results, nil
}
func runUpload(cmd *Command, args []string) bool {
if len(cmdUpload.Flag.Args()) == 0 {
if *uploadDir == "" {
@ -154,7 +56,7 @@ func runUpload(cmd *Command, args []string) bool {
return nil
}
}
results, e := submit([]string{path})
results, e := operation.SubmitFiles(*server, []string{path}, *uploadReplication)
bytes, _ := json.Marshal(results)
fmt.Println(string(bytes))
if e != nil {
@ -167,7 +69,7 @@ func runUpload(cmd *Command, args []string) bool {
return err
})
} else {
results, _ := submit(args)
results, _ := operation.SubmitFiles(*server, args, *uploadReplication)
bytes, _ := json.Marshal(results)
fmt.Println(string(bytes))
}