1 files changed, 96 insertions, 0 deletions
diff --git a/vicn/resource/gui.py b/vicn/resource/gui.py
new file mode 100644
index 00000000..26129b3e
--- /dev/null
+++ b/vicn/resource/gui.py
@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright (c) 2017 Cisco and/or its affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import http.server
+import io
+import os
+import socket
+import socketserver
+import sys
+import threading
+
+from vicn.core.resource_mgr             import ResourceManager
+from vicn.helpers.resource_definition   import *
+
+DEFAULT_GUI_ADDRESS = ''
+DEFAULT_GUI_PORT    = 8000
+
+class GUIHandler(http.server.SimpleHTTPRequestHandler):
+    def send_head(self):
+        if self.path == '/js/settings.js':
+            return self.get_settings()
+        return super().send_head()
+
+    def get_settings(self):
+        host = self.request.getsockname()[0]
+        port = ResourceManager().get('websocket_port');
+        r = []
+        r.append("var URL='ws://{}:{}';\n".format(host, port))
+        enc = sys.getfilesystemencoding()
+        encoded = '\n'.join(r).encode(enc, 'surrogateescape')
+        f = io.BytesIO()
+        f.write(encoded)
+        f.seek(0)
+        self.send_response(http.server.HTTPStatus.OK)
+        self.send_header("Content-type", "text/javascript;")
+        self.send_header("Content-Length", str(len(encoded)))
+        self.end_headers()
+        return f
+
+
+class GUI(Resource):
+    """
+    Resource: GUI
+
+    This resource is empty on purpose. It is a temporary resource used as a
+    placeholder for controlling the GUI and should be deprecated in future
+    releases.
+    """
+    address = Attribute(String, description = 'Address on which the Webserver listens',
+        default = DEFAULT_GUI_ADDRESS)
+    port = Attribute(Integer, description = 'Port on which the Webserver listens',
+        default = DEFAULT_GUI_PORT)
+    path = Attribute(String, default='www')
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        thread = threading.Thread(target = self.run)
+        thread.daemon = True
+        # XXX vICN should expose internal resources for interaction
+        try:
+            thread.start()
+        except KeyboardInterrupt:
+            server.shutdown()
+            sys.exit(0)
+
+    def run(self):
+        if not self.path.startswith(os.path.sep):
+            # XXX we might also search in the experiment folder
+            base_dir = os.path.join(os.path.dirname(__file__), os.path.pardir,
+                    os.path.pardir)
+            web_dir = os.path.join(base_dir, self.path)
+        else:
+            web_dir = self.path
+        os.chdir(web_dir)
+        socketserver.TCPServer.allow_reuse_address = True
+        httpd = socketserver.TCPServer((self.address, self.port), GUIHandler)
+        httpd.serve_forever()
+
+    def __del__(self):
+        pass