artiq/frontend/artiqd

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#!/usr/bin/env python3
import asyncio
import json
from artiq.management.scheduler import Scheduler
class Server:
def __init__(self, loop, scheduler):
self.scheduler = scheduler
self.terminate_notify = asyncio.Semaphore(0)
loop.run_until_complete(
asyncio.start_server(self.handle_connection, "::1", 8888))
@asyncio.coroutine
def handle_connection(self, reader, writer):
while True:
line = yield from reader.readline()
if not line:
writer.close()
return
obj = json.loads(line.decode())
action = obj["action"]
if action == "run_once":
yield from self.scheduler.add_run_once(obj["run_params"],
float(obj["timeout"]))
elif action == "quit":
self.terminate_notify.release()
else:
print("warning: unknown action " + action)
@asyncio.coroutine
def task(self, scheduler_task):
yield from self.terminate_notify.acquire()
scheduler_task.cancel()
def main():
loop = asyncio.get_event_loop()
try:
with Scheduler(loop) as scheduler:
server = Server(loop, scheduler)
scheduler_task = asyncio.Task(scheduler.task())
server_task = asyncio.Task(server.task(scheduler_task))
loop.run_until_complete(asyncio.wait([
scheduler_task,
server_task
]))
finally:
loop.close()
if __name__ == "__main__":
main()