/
sg-anpr.go
93 lines (79 loc) · 2.21 KB
/
sg-anpr.go
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package main
import (
"bytes"
"html/template"
"io"
"log"
"net/http"
"os"
"os/exec"
"path"
"strconv"
"time"
"github.com/otiai10/marmoset"
)
func uploadHandler(w http.ResponseWriter, r *http.Request) {
render := marmoset.Render(w, true)
file, _, err := r.FormFile("file")
if err != nil {
render.JSON(http.StatusBadRequest, err)
return
}
defer file.Close()
buff := make([]byte, 512) // why 512 bytes ? see http://golang.org/pkg/net/http/#DetectContentType
_, err = file.Read(buff)
if err != nil {
render.JSON(http.StatusBadRequest, err)
return
}
filetype := http.DetectContentType(buff)
if filetype != "image/jpeg" {
render.JSON(http.StatusBadRequest, map[string]string{"error": filetype + " detected, not a image/jpeg"})
return
} else {
// reset for io.Copy
_, err = file.Seek(0, 0)
if err != nil {
render.JSON(http.StatusInternalServerError, err)
return
}
}
tmpfile, err := os.Create("tmp/" + strconv.FormatInt(time.Now().UTC().Unix(), 10) + ".jpg")
if err != nil {
render.JSON(http.StatusInternalServerError, err)
return
}
if _, err := io.Copy(tmpfile, file); err != nil {
render.JSON(http.StatusInternalServerError, err)
return
}
tmpfile.Close()
pwd, _ := os.Getwd()
log.Println("docker", "run", "--rm", "-v", pwd+"/tmp:/data:ro", "openalpr/openalpr", "-j", "-c", "sg", path.Base(tmpfile.Name()))
cmd := exec.Command("docker", "run", "--rm", "-v", pwd+"/tmp:/data:ro", "openalpr/openalpr", "-j", "-c", "sg", path.Base(tmpfile.Name()))
var stdout bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err = cmd.Run()
if err != nil {
http.Error(w, err.Error()+"\n"+stderr.String(), http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
w.Write(stdout.Bytes())
}
func index(w http.ResponseWriter, r *http.Request) {
templates := template.Must(template.New("main").ParseGlob("*.html"))
err := templates.ExecuteTemplate(w, "index.html", nil)
if err != nil {
log.Panic(err)
}
log.Printf("%s %s %s %s\n", r.RemoteAddr, r.Method, r.URL, r.UserAgent())
}
func main() {
http.HandleFunc("/", index)
http.HandleFunc("/recognise", uploadHandler)
http.ListenAndServe(":7077", nil)
}