Check file existence before upload

lookaside_upload

@@ -71,8 +71,28 @@ if [ ! -f ~/.centos.cert ] ;then
   exit 1
 fi
 
-f_log "Initialing new upload to lookaside"
+if [ ! -f "${file}" ] ;then
+  f_log "Source to upload ${file} not found"
+  exit 2
+fi
+
 checksum=$(sha1sum ${file}|awk '{print $1}')
+
+f_log "Checking if file already uploaded"
+result=$(curl ${lookaside_baseurl}/sources/upload.cgi \
+	--fail \
+	-s \
+	--cert ~/.centos.cert \
+	--form "name=${pkgname}" \
+	--form "branch=${branch}" \
+	--form "sha1sum=${checksum}")
+
+if [ "$result" = "Available" ] ;then
+  f_log "File already uploaded"
+  exit 3
+fi
+
+f_log "Initialing new upload to lookaside"
 f_log "URL : $lookaside_baseurl"
 f_log "Source to upload : ${file} "
 f_log "Package name: $pkgname"