def make_app():
"""Create a `PerspectiveManager` and host our tables and views so they
can be accessed over a Websocket."""
MANAGER = perspective.PerspectiveManager()
# Seed the initial holdings table
TABLES["holdings"].update({
"symbol":
symbols,
"quantity": [holdings[symbol] for symbol in symbols],
})
# Set up the on_update callbacks
def update_total(port, delta):
"""When the indexed table updates with the latest price, update the
unindexed table with the rows that changed."""
TABLES["holdings_total"].update(delta)
VIEWS["holdings"].on_update(update_total, mode="row")
def update_holdings(port, delta):
TABLES["holdings"].update(delta)
VIEWS["quotes"].on_update(update_holdings, mode="row")
MANAGER.host_table("holdings_table", TABLES["holdings"])
MANAGER.host_view("holdings_view", VIEWS["holdings"])
MANAGER.host_table("holdings_total_table", TABLES["holdings_total"])
MANAGER.host_view("holdings_total_view", VIEWS["holdings_total"])
MANAGER.host_table("quotes_table", TABLES["quotes"])
MANAGER.host_view("quotes_view", VIEWS["quotes"])
MANAGER.host_table("charts_table", TABLES["charts"])
MANAGER.host_view("charts_view", VIEWS["charts"])
return tornado.web.Application([
# create a websocket endpoint that the client Javascript can access
(
r"/websocket",
perspective.PerspectiveTornadoHandler,
{
"manager": MANAGER,
"check_origin": True
},
),
(r"/", MainHandler),
])
def server(queue, is_async):
"""Start a server, within this process."""
manager = perspective.PerspectiveManager()
table = get_table()
manager.host_table("data_source_one", table)
if is_async:
thread = threading.Thread(target=perspective_thread, args=(manager, ))
thread.daemon = True
thread.start()
loop = tornado.ioloop.IOLoop.current()
loop.add_callback(queue.put, True)
if not is_async:
manager.set_loop_callback(loop.add_callback)
make_app(manager)
loop.start()
'port_number' : port_number,
}
with open (BASE_DIR + "\port-data.json", 'w') as fp:
json.dump(port_data, fp)
else:
port_number = 8888
port_data = {
'port_number' : port_number,
}
with open (BASE_DIR + "\port-data.json", 'w') as fp:
json.dump(port_data, fp)
except:
port_number = 8888
port_data = {
'port_number' : port_number,
}
with open (BASE_DIR + "\port-data.json", 'w') as fp:
json.dump(port_data, fp)
app.listen(port_number)
print("Listening on http://localhost:", port_number)
loop = tornado.ioloop.IOLoop.current()
loop.start()
if __name__ == "__main__":
with qpython.qconnection.QConnection("localhost", 5000) as conn:
manager = perspective.PerspectiveManager()
start_server(manager = manager, qconn = conn)
PARSER.add_argument(
"--latest",
dest="latest",
default=False,
type=bool,
help=
"Whether to find the newest folder of results, or use the exact results path.",
)
PARSER.add_argument(
"results_path",
help=
"A path to a folder containing test results stored as Arrows. If --latest is True, the script will find the newest created folder of results.",
)
MANAGER = perspective.PerspectiveManager()
class MainHandler(tornado.web.RequestHandler):
def set_default_headers(self):
self.set_header("Access-Control-Allow-Origin", "*")
self.set_header("Access-Control-Allow-Headers", "x-requested-with")
self.set_header("Access-Control-Allow-Methods", "POST, GET, OPTIONS")
def get(self):
self.render("results.html")
def make_results_table(results_path):
"""Given a path to a folder containing Arrow files, create a Perspective
Table from the first arrow and update with the rest. This allows us to