The back-end websocket server for wowlet.
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# SPDX-License-Identifier: BSD-3-Clause
# Copyright (c) 2020, The Monero Project.
# Copyright (c) 2020, dsc@xmr.pm
import asyncio
import json
from quart import websocket, jsonify
from wowlet_backend.factory import app
from wowlet_backend.wsparse import WebsocketParse
from wowlet_backend.utils import collect_websocket, feather_data
@app.route("/")
async def root():
data = await feather_data()
return jsonify(data)
@app.websocket('/ws')
@collect_websocket
async def ws(queue):
data = await feather_data()
# blast available data on connect
for task_key, task_value in data.items():
if not task_value:
continue
await websocket.send(json.dumps({"cmd": task_key, "data": task_value}).encode())
async def rx():
while True:
buffer = await websocket.receive()
try:
blob = json.loads(buffer)
if "cmd" not in blob:
continue
cmd = blob.get('cmd')
_data = blob.get('data')
result = await WebsocketParse.parser(cmd, _data)
if result:
rtn = json.dumps({"cmd": cmd, "data": result}).encode()
await websocket.send(rtn)
except Exception as ex:
continue
async def tx():
while True:
data = await queue.get()
payload = json.dumps(data).encode()
await websocket.send(payload)
# bidirectional async rx and tx loops
consumer_task = asyncio.ensure_future(rx())
producer_task = asyncio.ensure_future(tx())
try:
await asyncio.gather(consumer_task, producer_task)
finally:
consumer_task.cancel()
producer_task.cancel()
@app.errorhandler(403)
@app.errorhandler(404)
@app.errorhandler(405)
@app.errorhandler(500)
def page_not_found(e):
return ":)", 500