Add grpc_validator

grpc/scripts/gen.sh

@@ -36,12 +36,17 @@ do
         if [ $? -ne 0 ];then
             echo "missing plugin: $plugin" && exit
         fi
+        vplugin=protoc-gen-govalidators
+        which $vplugin > /dev/null
+        if [ $? -ne 0 ];then
+            echo "missing plugin: $vplugin" && exit
+        fi
         out="$gen_dir/go"
         if [ ! -d $out ]; then
             mkdir -p $out
         fi
         echo "Generating Go code"
-        $exec --go_out=plugins=grpc:$out $pb_files $async_tag
+        $exec --go_out=plugins=grpc:$out --govalidators_out=$out $pb_files $async_tag
     fi
     if [ $aug == "gohttp" ]; then
         plugin=protoc-gen-grpc-gateway