def __init__(self, callbacks=None, host='', port=8000, ):

self.host = host

self.port = port

self.views = {'get_rpc': self.get_rpc,

'images': self.get_file,

'save_file': self.save_file}

self.url_map = Map([Rule('/', endpoint='get_rpc'),

Rule('/jsonrpc', endpoint='get_rpc'),

Rule('/images', endpoint='images'),

Rule('/upload', endpoint='save_file')])

# add the method names and the handlers to the dispatcher methods.

if callbacks:

for keys in callbacks.keys():

dispatcher[keys] = callbacks[keys]

def get_rpc(self, environ, request):

response = JSONRPCResponseManager.handle(request.data, dispatcher)

return Response(response.json, mimetype="application/json")

def get_file(self, environ, request):

try:

file = open('images/'+request.query_string.decode(), 'rb')

except Exception as e:

debug_logger.debug("could not read file" + str(e))

raise NotFound()

return Response(wrap_file(environ, file), direct_passthrough=True)

def save_file(self, environ, request):

try:

file = request.files['image']

filename = 'images/'+request.form["btn_name"].strip('"')+".jpg"

id = request.form['btn_id']

txt = request.form['btn_text'].strip('"')

file.save(filename)

dispatcher['update_image'](id, txt, filename)

except Exception:

return NotFound()

return Response("Ok")

@responder

def application(self, environ, start_response):

request = Request(environ)

urls = self.url_map.bind_to_environ(environ)

return urls.dispatch(lambda e, v: self.views[e](environ, request, **v),

catch_http_exceptions=True)

def start(self):