perkeep/clients/go/camliup.go

153 lines
3.1 KiB
Go

// Copyright 2010 Brad Fitzpatrick <brad@danga.com>
//
// See LICENSE.
package main
import (
"bytes"
"crypto/sha1"
"flag"
"fmt"
"http"
"io"
"json"
"os"
"strings"
)
import "./concat_reader/_obj/concat_reader"
var flagFile *string = flag.String("file", "", "file to upload")
var flagServer *string = flag.String("server", "http://localhost:3179/", "camlistore server")
type UploadHandle struct {
blobref string
contents io.ReadSeeker
}
// Upload agent
type Agent struct {
server string
}
func NewAgent(server string) *Agent {
return &Agent{server}
}
func (a *Agent) Upload(h *UploadHandle) {
url := fmt.Sprintf("%s/camli/preupload", a.server)
fmt.Println("Need to upload: ", h, "to", url)
error := func(msg string, e os.Error) {
fmt.Fprintf(os.Stderr, "%s on %v: %v\n", msg, h.blobref, e)
return
}
resp, err := http.Post(
url,
"application/x-www-form-urlencoded",
strings.NewReader("camliversion=1&blob1="+h.blobref))
if err != nil {
fmt.Fprintf(os.Stderr, "Upload error for %v: %v\n",
h.blobref, err)
}
fmt.Println("Got response:", resp)
buf := new(bytes.Buffer)
io.Copy(buf, resp.Body)
resp.Body.Close()
pur := make(map[string]interface{})
jerr := json.Unmarshal(buf.Bytes(), &pur)
if jerr != nil {
error("preupload parse error", jerr)
return
}
uploadUrl, ok := pur["uploadUrl"].(string)
if uploadUrl == "" {
error("no uploadUrl in preupload response", nil)
return
}
alreadyHave, ok := pur["alreadyHave"].([]interface{})
if !ok {
error("no alreadyHave array in preupload response", nil)
return
}
for _, haveObj := range alreadyHave {
haveObj := haveObj.(map[string]interface{})
if haveObj["blobRef"].(string) == h.blobref {
fmt.Println("already have it!")
// TODO: signal success
return
}
}
fmt.Println("preupload done:", pur, alreadyHave)
boundary := "sdf8sd8f7s9df9s7df9sd7sdf9s879vs7d8v7sd8v7sd8v"
h.contents.Seek(0, 0)
resp, err = http.Post(uploadUrl,
"multipart/form-data; boundary="+boundary,
concat_reader.NewConcatReader(
strings.NewReader(fmt.Sprintf(
"--%s\r\nContent-Disposition: form-data; name=\"%s\"\r\n\r\n",
boundary,
h.blobref)),
h.contents,
strings.NewReader("\r\n--"+boundary+"--\r\n")))
if err != nil {
error("camli upload error", err)
return
}
fmt.Println("Uploaded!")
fmt.Println("Got response: ", resp)
resp.Write(os.Stdout)
}
func (a *Agent) Wait() int {
// TODO
return 0
}
func blobName(contents io.ReadSeeker) string {
s1 := sha1.New()
contents.Seek(0, 0)
io.Copy(s1, contents)
return fmt.Sprintf("sha1-%x", s1.Sum())
}
func uploadFile(agent *Agent, filename string) os.Error {
file, err := os.Open(filename, os.O_RDONLY, 0)
if err != nil {
return err
}
fmt.Println("blob is:", blobName(file))
handle := &UploadHandle{blobName(file), file}
agent.Upload(handle)
return nil
}
func main() {
flag.Parse()
// Remove trailing slash if provided.
if strings.HasSuffix(*flagServer, "/") {
*flagServer = (*flagServer)[0 : len(*flagServer)-1]
}
agent := NewAgent(*flagServer)
if *flagFile != "" {
uploadFile(agent, *flagFile)
}
stats := agent.Wait()
fmt.Println("Done uploading; stats:", stats)
}