Added HttpInterface

app/HttpInterface.py

@@ -0,0 +1,89 @@
+import threading
+import urlparse
+
+import requests
+
+from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
+
+SERVER_HOST= '127.0.0.1'
+SERVER_PORT = 8080
+
+class RequestHandler(BaseHTTPRequestHandler):
+	
+	#Handler for the GET requests
+	def do_GET(self):
+		if self.path == "/":
+			self.send_response(200)
+			self.send_header('Content-type','text/html')
+			self.end_headers()
+			
+			write = self.wfile.write
+
+			# Describe state machine:
+			categories = []
+
+			write("<table>")
+			write("<tr><th>Name</th><th>State</th><th>Last Changed</th></tr>")
+
+			for category, state, last_changed in self.server.statemachine.get_states():
+				categories.append(category)
+
+				write("<tr><td>{}</td><td>{}</td><td>{}</td></tr>".format(category, state, last_changed.strftime("%H:%M:%S %d-%m-%Y")))
+
+			write("</table>")
+
+			# Small form to change the state
+			write("<br />Change state:<br />")
+			write("<form action='change_state' method='POST'>")
+			write("<select name='category'>")
+
+			for category in categories:
+				write("<option>{}</option>".format(category))
+
+			write("</select>")
+
+			write("<input name='new_state' />")
+			write("<input type='submit' value='set state' />")
+			write("</form>")
+
+		else:
+			self.send_response(404)
+
+
+	def do_POST(self):
+		length = int(self.headers['Content-Length'])
+		post_data = urlparse.parse_qs(self.rfile.read(length))
+
+		if self.path == "/change_state":
+			self.server.statemachine.set_state(post_data['category'][0], post_data['new_state'][0])
+
+			self.send_response(301)
+			self.send_header("Location", "/")
+			self.end_headers()
+
+		else:
+			self.send_response(404)
+
+
+class HttpInterface(threading.Thread):
+
+	def __init__(self, eventbus, statemachine):
+		threading.Thread.__init__(self)
+
+		self.server = HTTPServer((SERVER_HOST, SERVER_PORT), RequestHandler)
+
+		self.server.eventbus = eventbus
+		self.server.statemachine = statemachine
+
+		self._stop = threading.Event()
+
+
+	def run(self):		
+		while not self._stop.is_set():
+			self.server.handle_request()
+
+	def stop(self):
+		self._stop.set()
+
+		# Trigger a fake request to get the server to quit
+		requests.get("http://{}:{}".format(SERVER_HOST, SERVER_PORT))