Files
copyparty/copyparty/svchub.py
2019-06-18 18:33:02 +00:00

120 lines
3.6 KiB
Python

#!/usr/bin/env python
# coding: utf-8
from __future__ import print_function, unicode_literals
import sys
import time
import threading
import multiprocessing as mp
from datetime import datetime, timedelta
import calendar
from .__init__ import PY2, WINDOWS
from .tcpsrv import TcpSrv
class SvcHub(object):
"""
Hosts all services which cannot be parallelized due to reliance on monolithic resources.
Creates a Broker which does most of the heavy stuff; hosted services can use this to perform work:
hub.broker.put(retq, action, arg1, argN).
Either BrokerThr (plain threads) or BrokerMP (multiprocessing) is used depending on configuration.
To receive any output returned by action, provide a queue-object for retq, else None.
"""
def __init__(self, args):
self.args = args
self.log_mutex = threading.Lock()
self.next_day = 0
# initiate all services to manage
self.tcpsrv = TcpSrv(self)
# decide which worker impl to use
if self.check_mp_enable():
from .broker_mp import BrokerMp as Broker
else:
self.log("root", "cannot efficiently use multiple CPU cores")
from .broker_thr import BrokerThr as Broker
self.broker = Broker(self)
def run(self):
thr = threading.Thread(target=self.tcpsrv.run)
thr.daemon = True
thr.start()
# winxp/py2.7 support: thr.join() kills signals
try:
while True:
time.sleep(9001)
except KeyboardInterrupt:
print("OPYTHAT")
self.tcpsrv.shutdown()
self.broker.shutdown()
print("nailed it")
def log(self, src, msg):
"""handles logging from all components"""
now = time.time()
if now >= self.next_day:
dt = datetime.utcfromtimestamp(now)
print("\033[36m{}\033[0m".format(dt.strftime("%Y-%m-%d")))
# unix timestamp of next 00:00:00 (leap-seconds safe)
day_now = dt.day
while dt.day == day_now:
dt += timedelta(hours=12)
dt = dt.replace(hour=0, minute=0, second=0)
self.next_day = calendar.timegm(dt.utctimetuple())
with self.log_mutex:
ts = datetime.utcfromtimestamp(now).strftime("%H:%M:%S")
print("\033[36m{} \033[33m{:21} \033[0m{}".format(ts, src, msg))
def check_mp_support(self):
vmin = sys.version_info[1]
if WINDOWS:
msg = "need python 3.3 or newer for multiprocessing;"
if PY2:
# py2 pickler doesn't support winsock
return msg
elif vmin < 3:
return msg
else:
msg = "need python 2.7 or 3.3+ for multiprocessing;"
if not PY2 and vmin < 3:
return msg
try:
x = mp.Queue(1)
x.put(["foo", "bar"])
if x.get()[0] != "foo":
raise Exception()
except:
return "multiprocessing is not supported on your platform;"
return None
def check_mp_enable(self):
if self.args.j == 0:
self.log("root", "multiprocessing disabled by argument -j 0;")
return False
try:
# support vscode debugger (bonus: same behavior as on windows)
mp.set_start_method("spawn", True)
except AttributeError:
# py2.7 probably, anyways dontcare
pass
err = self.check_mp_support()
if not err:
return True
else:
self.log("root", err)
return False