refactor(interactive): Order procedures by default based on creation time. (#4059)

Order procedures by default based on creation time.

Author: zhanglei1949

flex/engines/http_server/workdir_manipulator.cc

@@ -105,7 +105,8 @@ gs::Result<bool> WorkDirManipulator::DumpGraphSchema(
       YAML::Node plugin_node;
       plugin_node["name"] = plugin.name;
       plugin_node["library"] = plugin.library;
-      plugin_node["description"] = plugin.description;
+      // quote the description, since it may contain space.
+      plugin_node["description"] = "\"" + plugin.description + "\"";
       if (plugin.params.size() > 0) {
         YAML::Node params_node;
         for (auto& param : plugin.params) {
@@ -525,7 +526,9 @@ gs::Result<seastar::sstring> WorkDirManipulator::UpdateProcedure(
     auto new_description = json["description"];
     VLOG(10) << "Update description: "
              << new_description;  // update description
-    plugin_node["description"] = new_description.get<std::string>();
+    // quote the description, since it may contain space.
+    plugin_node["description"] =
+        "\"" + new_description.get<std::string>() + "\"";
   }
 
   bool enabled;

flex/storages/metadata/default_graph_meta_store.cc

@@ -150,6 +150,11 @@ Result<std::vector<PluginMeta>> DefaultGraphMetaStore::GetAllPluginMeta(
       metas.push_back(plugin_meta);
     }
   }
+  // Sort the plugin metas by create time.
+  std::sort(metas.begin(), metas.end(),
+            [](const PluginMeta& a, const PluginMeta& b) {
+              return a.creation_time < b.creation_time;
+            });
   return Result<std::vector<PluginMeta>>(metas);
 }