Optimize project closing by avoiding closing unused modules

Fix #627

gns3server/compute/base_manager.py

@@ -58,6 +58,13 @@ class BaseManager:
         self._port_manager = None
         self._config = Config.instance()
 
+    @property
+    def nodes(self):
+        """
+        List of nodes manage by the module
+        """
+        return self._nodes.values()
+
     @classmethod
     def instance(cls):
         """

gns3server/compute/project.py

@@ -278,11 +278,21 @@ class Project:
         Closes the project, but keep information on disk
         """
 
+        project_nodes_id = set([n.id for n in self.nodes])
+
         for module in self.compute():
-            yield from module.instance().project_closing(self)
+            module_nodes_id = set([n.id for n in module.instance().nodes])
+            # We close the project only for the modules using it
+            if len(module_nodes_id & project_nodes_id):
+                yield from module.instance().project_closing(self)
+
         yield from self._close_and_clean(False)
+
         for module in self.compute():
-            yield from module.instance().project_closed(self)
+            module_nodes_id = set([n.id for n in module.instance().nodes])
+            # We close the project only for the modules using it
+            if len(module_nodes_id & project_nodes_id):
+                yield from module.instance().project_closed(self)
 
         try:
             if os.path.exists(self.tmp_working_directory()):