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perspective-dev--perspective/examples/python-tornado/server.py
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2026-07-13 12:25:07 +08:00

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Python

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# ┃ Copyright (c) 2017, the Perspective Authors. ┃
# ┃ ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌ ┃
# ┃ This file is part of the Perspective library, distributed under the terms ┃
# ┃ of the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). ┃
# ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
import os
import os.path
import logging
import tornado.websocket
import tornado.web
import tornado.ioloop
import perspective
import perspective.handlers.tornado
here = os.path.abspath(os.path.dirname(__file__))
file_path = os.path.join(
here, ".", "node_modules", "superstore-arrow", "superstore.lz4.arrow"
)
def make_app(perspective_server):
return tornado.web.Application(
[
(
r"/websocket",
perspective.handlers.tornado.PerspectiveTornadoHandler,
{"perspective_server": perspective_server},
),
(
r"/node_modules/(.*)",
tornado.web.StaticFileHandler,
{"path": "../../node_modules/"},
),
(
r"/(.*)",
tornado.web.StaticFileHandler,
{"path": "./", "default_filename": "index.html"},
),
],
websocket_max_message_size=100 * 1024 * 1024,
)
if __name__ == "__main__":
perspective_server = perspective.Server()
app = make_app(perspective_server)
app.listen(8080)
logging.critical("Listening on http://localhost:8080")
loop = tornado.ioloop.IOLoop.current()
client = perspective_server.new_local_client()
with open(file_path, mode="rb") as file:
data = file.read()
table = client.table(data, name="data_source_one")
for _ in range(10):
table.update(data)
loop.start()