Base server & plugin system & first unit tests

gns3server/server.py

@@ -0,0 +1,80 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2013 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/>.
+
+import logging
+import socket
+import tornado.ioloop
+import tornado.web
+import gns3server
+
+logger = logging.getLogger(__name__)
+
+
+class MainHandler(tornado.web.RequestHandler):
+
+    def get(self):
+        self.write("Welcome to the GNS3 server!")
+
+
+class VersionHandler(tornado.web.RequestHandler):
+
+    def get(self):
+        response = {'version': gns3server.__version__}
+        self.write(response)
+
+
+class Server(object):
+
+    # built-in handlers
+    handlers = [(r"/", MainHandler),
+                (r"/version", VersionHandler)]
+
+    def __init__(self):
+
+        self._plugins = []
+
+    def load_plugins(self):
+        """Loads the plugins
+        """
+
+        plugin_manager = gns3server.PluginManager()
+        plugin_manager.load_plugins()
+        for plugin in plugin_manager.get_all_plugins():
+            instance = plugin_manager.activate_plugin(plugin)
+            self._plugins.append(instance)
+            plugin_handlers = instance.handlers()
+            self.handlers.extend(plugin_handlers)
+
+    def run(self):
+        """Starts the tornado web server
+        """
+
+        from tornado.options import options
+        tornado_app = tornado.web.Application(self.handlers)
+        try:
+            port = options.port
+            print("Starting server on port {}".format(port))
+            tornado_app.listen(port)
+        except socket.error as e:
+            if e.errno is 48:  # socket already in use
+                logging.critical("socket in use for port {}".format(port))
+                raise SystemExit
+        try:
+            tornado.ioloop.IOLoop.instance().start()
+        except (KeyboardInterrupt, SystemExit):
+            print("\nExiting...")
+            tornado.ioloop.IOLoop.instance().stop()