Beginning of the symbols from controller

Ref #496

gns3server/handlers/api/controller/__init__.py

@@ -21,3 +21,4 @@ from .node_handler import NodeHandler
 from .link_handler import LinkHandler
 from .server_handler import ServerHandler
 from .drawing_handler import DrawingHandler
+from .symbol_handler import SymbolHandler

gns3server/handlers/api/controller/symbol_handler.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2016 GNS3 Technologies Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from gns3server.web.route import Route
+from gns3server.controller import Controller
+
+
+import logging
+log = logging.getLogger(__name__)
+
+
+class SymbolHandler:
+    """API entry points for symbols management."""
+
+    @Route.get(
+        r"/symbols",
+        description="List of symbols",
+        status_codes={
+            200: "Symbols list returned"
+        })
+    def list(request, response):
+
+        controller = Controller.instance()
+        response.json(controller.symbols.list())