Add check of HTTP status when downloading

backend/ratings/ratings.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"bytes"
 	"compress/gzip"
+	"fmt"
 	"io/ioutil"
 	"net/http"
 	"strconv"
@@ -34,6 +35,10 @@ func Refresh(env *web.Env) error {
 	}
 	defer resp.Body.Close()
 
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("got HTTP error %s", resp.Status)
+	}
+
 	// Read all the file (~5MB) in memory
 	// We do that because the ~1 000 000 upserts take too long, and the IMDB
 	// server will cut our connection after ~2h

backend/web/download.go

@@ -1,6 +1,7 @@
 package web
 
 import (
+	"fmt"
 	"image"
 	"image/jpeg"
 	"net/http"
@@ -26,6 +27,10 @@ var Download = func(srcURL, dest string, scale bool) error {
 	}
 	defer resp.Body.Close()
 
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("got HTTP error %s", resp.Status)
+	}
+
 	image, _, err := image.Decode(resp.Body)
 	if err != nil {
 		return err