forked from go-chassis/go-chassis
/
main.go
executable file
·113 lines (93 loc) · 2.62 KB
/
main.go
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package main
import (
"bytes"
"context"
"io"
"mime/multipart"
"os"
"fmt"
"github.com/go-chassis/go-chassis"
_ "github.com/go-chassis/go-chassis/bootstrap"
"github.com/go-chassis/go-chassis/client/rest"
"github.com/go-chassis/go-chassis/core"
"github.com/go-chassis/go-chassis/core/lager"
"io/ioutil"
)
//if you use go run main.go instead of binary run, plz export CHASSIS_HOME=/{path}/{to}/fileupload/client/
func main() {
//Init framework
if err := chassis.Init(); err != nil {
lager.Logger.Error("Init failed.", err)
return
}
// file / form to upload
uploadfile("file.input")
uploadform("form.input")
}
func uploadfile(filename string) {
f, err := os.Open(filename)
if err != nil {
lager.Logger.Error("Error in opening file", err)
return
}
defer f.Close()
body := &bytes.Buffer{}
_, err = io.Copy(body, f)
if err != nil {
lager.Logger.Error("Copy failed.", err)
return
}
req, err := rest.NewRequest("POST", "cse://FileUploadServer/uploadfile", body.Bytes())
if err != nil {
lager.Logger.Error("new request failed.", err)
return
}
defer req.Close()
req.SetHeader("Content-Type", "application/octet-stream")
resp, err := core.NewRestInvoker().ContextDo(context.TODO(), req)
if err != nil {
lager.Logger.Error("do request failed.", err)
return
}
defer resp.Close()
lager.Logger.Info("FileUploadServer Response: " + string(resp.ReadBody()))
}
func uploadform(filename string) {
//Form part
headBuf := bytes.NewBufferString("")
headBufWriter := multipart.NewWriter(headBuf)
_, err := headBufWriter.CreateFormFile("uploadfile", filename)
if err != nil {
lager.Logger.Error("Error in create form file", err)
return
}
f, err := os.Open(filename)
if err != nil {
lager.Logger.Error("Error in opening file", err)
return
}
defer f.Close()
fs, err := f.Stat()
if err != nil {
lager.Logger.Error("Error in stat file", err)
return
}
lastBoundary := bytes.NewBufferString(fmt.Sprintf("\r\n--%s--\r\n", headBufWriter.Boundary()))
bodyReader := io.MultiReader(headBuf, f, lastBoundary)
req, err := rest.NewRequest("POST", "cse://FileUploadServer/uploadform")
if err != nil {
lager.Logger.Error("new request failed.", err)
return
}
req.Req.Body = ioutil.NopCloser(bodyReader)
req.SetHeader("Content-Type", headBufWriter.FormDataContentType())
req.Req.ContentLength = int64(headBuf.Len()) + fs.Size() + int64(lastBoundary.Len())
defer req.Close()
resp, err := core.NewRestInvoker().ContextDo(context.TODO(), req)
if err != nil {
lager.Logger.Error("do request failed.", err)
return
}
defer resp.Close()
lager.Logger.Info("FileUploadServer Response: " + string(resp.ReadBody()))
}