486 lines
15 KiB
Python
486 lines
15 KiB
Python
import binascii
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import collections
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import copy
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import logging
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import os
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import queue
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import sys
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import threading
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import time
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from enum import Enum
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from random import randint
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import zmq
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from . import draw, helpers, message
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from .libs import dump_anything, umsgpack
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# import zmq
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lock = threading.Lock()
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logger = logging.getLogger(__name__)
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logging.basicConfig(level=logging.INFO)
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CONNECT_TIMEOUT = 2
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WAITING_TIME = 0.001
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SERVER_MAX = 1
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stop = False
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DUMP_AGENTS_NUMBER = 1
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class State(Enum):
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INITIAL = 1
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SYNCING = 2
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ACTIVE = 3
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WORKING = 4
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def zpipe(ctx):
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"""build inproc pipe for talking to threads
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mimic pipe used in czmq zthread_fork.
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Returns a pair of PAIRs connected via inproc
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"""
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a = ctx.socket(zmq.PAIR)
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b = ctx.socket(zmq.PAIR)
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a.linger = b.linger = 0
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a.hwm = b.hwm = 1
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iface = "inproc://%s" % binascii.hexlify(os.urandom(8))
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a.bind(iface)
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b.connect(iface)
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return a, b
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class RCFClient(object):
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ctx = None
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pipe = None
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net_agent = None
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store = None
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active_tasks = None
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def __init__(self):
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self.ctx = zmq.Context()
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self.pipe, peer = zpipe(self.ctx)
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self.store = {}
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self.serial_product = queue.Queue()
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self.serial_feed = queue.Queue()
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self.stop_event= threading.Event()
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# Net agent
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self.net_agent = threading.Thread(
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target=rcf_net_worker, args=(self.ctx, self.store, peer, self.serial_product,self.serial_feed, self.stop_event), name="net-agent")
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self.net_agent.daemon = True
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self.net_agent.start()
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# Local data translation agent
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self.serial_agents = []
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for a in range(0, DUMP_AGENTS_NUMBER):
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serial_agent = threading.Thread(
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target=serial_worker, args=(self.serial_product, self.serial_feed), name="serial-agent")
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serial_agent.daemon = True
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serial_agent.start()
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self.serial_agents.append(serial_agent)
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# Sync agent
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self.watchdog_agent = threading.Thread(
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target=watchdog_worker, args=(self.serial_feed, 0.2, self.stop_event), name="watchdog-agent")
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self.watchdog_agent.daemon = True
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self.watchdog_agent.start()
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# Status
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self.active_tasks = 0
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def connect(self, id, address, port):
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self.pipe.send_multipart([b"CONNECT", (id.encode() if isinstance(
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id, str) else id), (address.encode() if isinstance(
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address, str) else address), b'%d' % port])
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def init(self):
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"""
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Scene initialisation
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"""
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self.pipe.send_multipart(
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[b"INIT"])
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def disconnect(self):
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"""
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Disconnect
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"""
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self.pipe.send_multipart(
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[b"DISCONNECT"])
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def set(self, key, value=None, override=False):
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"""Set new value in distributed hash table
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Sends [SET][key][value] to the agent
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"""
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if value:
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pass
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self.pipe.send_multipart(
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[b"SET", umsgpack.packb(key), (umsgpack.packb(value) if value else umsgpack.packb('None')),umsgpack.packb(override)])
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else:
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self.serial_feed.put(('DUMP',key,None))
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def add(self, key, value=None):
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"""Set new value in distributed hash table
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Sends [SET][key][value] to the agent
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"""
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self.serial_feed.put(key)
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def is_busy(self):
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self.active_tasks = self.serial_feed.qsize() + self.serial_product.qsize()
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if self.active_tasks == 0:
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return False
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else:
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return True
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def exit(self):
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if self.net_agent.is_alive():
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self.disconnect()
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self.stop_event.set()
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for a in range(0,DUMP_AGENTS_NUMBER):
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self.serial_feed.put(('STOP',None,None))
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# READ-ONLY FUNCTIONS
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def get(self, key):
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"""Lookup value in distributed hash table
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Sends [GET][key] to the agent and waits for a value response
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If there is no clone available, will eventually return None.
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"""
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value = []
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for k in self.store.keys():
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if key in k:
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value.append([k, self.store.get(k).body])
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return value
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def exist(self,key):
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"""
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Fast key exist check
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"""
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if key in self.store.keys():
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return True
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else:
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return False
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def list(self):
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dump_list = []
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for k,v in self.store.items():
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if 'Client' in k:
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dump_list.append([k,v.id.decode()])
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else:
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try:
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dump_list.append([k,v.body['id']])
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except:
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pass
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return dump_list
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def state(self):
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if not self.is_busy():
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self.pipe.send_multipart([b"STATE"])
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try:
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reply = self.pipe.recv_multipart()
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except KeyboardInterrupt:
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return
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else:
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return umsgpack.unpackb(reply[0])
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else:
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return None
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class RCFServer(object):
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address = None # Server address
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port = None # Server port
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snapshot = None # Snapshot socket
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subscriber = None # Incoming updates
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def __init__(self, ctx, address, port, id):
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self.address = address
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self.port = port
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self.snapshot = ctx.socket(zmq.DEALER)
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self.snapshot.linger = 0
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self.snapshot.setsockopt(zmq.IDENTITY, id)
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self.snapshot.connect("tcp://{}:{}".format(address.decode(), port))
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self.subscriber = ctx.socket(zmq.SUB)
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self.subscriber.setsockopt_string(zmq.SUBSCRIBE, '')
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self.subscriber.connect("tcp://{}:{}".format(address.decode(), port+1))
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self.subscriber.linger = 0
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print("connected on tcp://{}:{}".format(address.decode(), port))
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class RCFClientAgent(object):
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ctx = None
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pipe = None
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property_map = None
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publisher = None
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id = None
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state = State.INITIAL
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server = None
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serial = None
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serialisation_agent = None
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def __init__(self, ctx, store, pipe):
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self.ctx = ctx
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self.pipe = pipe
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self.property_map = store
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self.id = b"test"
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self.state = State.INITIAL
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self.admin = False
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self.server = None
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self.publisher = self.ctx.socket(zmq.PUSH) # push update socket
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self.publisher.setsockopt(zmq.IDENTITY, self.id)
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self.publisher.setsockopt(zmq.SNDHWM, 60)
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self.publisher.linger = 0
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def control_message(self):
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msg = self.pipe.recv_multipart()
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command = msg.pop(0)
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if command == b"CONNECT":
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self.id = msg.pop(0)
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address = msg.pop(0)
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port = int(msg.pop(0))
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if self.server is None:
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if address == '127.0.0.1' or address == 'localhost' :
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self.admin = True
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self.server = RCFServer(self.ctx, address, port, self.id)
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self.publisher.connect(
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"tcp://{}:{}".format(address.decode(), port+2))
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else:
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logger.error("E: too many servers (max. %i)", SERVER_MAX)
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elif command == b"DISCONNECT":
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if self.admin is False:
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uid = self.id.decode()
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delete_user = message.RCFMessage(
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key="Client/{}".format(uid), id=self.id, body=None)
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delete_user.send(self.publisher)
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# TODO: Do we need to pass every object rights to the moderator on disconnect?
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# for k,v in self.property_map.items():
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# if v.body["id"] == uid:
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# delete_msg = message.RCFMessage(
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# key=k, id=self.id, body=None)
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# # delete_msg.store(self.property_map)
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# delete_msg.send(self.publisher)
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elif command == b"SET":
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key = umsgpack.unpackb(msg[0])
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value = umsgpack.unpackb(msg[1])
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override = umsgpack.unpackb(msg[2])
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if key in self.property_map.keys():
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if self.property_map[key].body['id'] == self.id.decode() or override:
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if value == 'None':
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value = helpers.dump(key)
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value['id'] = self.id.decode()
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if value:
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key_id = self.id
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rcfmsg = message.RCFMessage(
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key=key, id=key_id, body=value)
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rcfmsg.store(self.property_map)
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if override:
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helpers.load(key,self.property_map[key].body)
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rcfmsg.send(self.publisher)
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else:
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logger.error("Fail to dump ")
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else:
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helpers.load(key,self.property_map[key].body)
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elif command == b"ADD":
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key = umsgpack.unpackb(msg[0])
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value = umsgpack.unpackb(msg[1])
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if value == 'None':
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value = helpers.dump(key)
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value['id'] = self.id.decode()
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if value:
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rcfmsg = message.RCFMessage(
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key=key, id=self.id, body=value)
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rcfmsg.store(self.property_map)
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rcfmsg.send(self.publisher)
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else:
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logger.error("Fail to dump ")
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elif command == b"GET":
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value = []
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key = umsgpack.unpackb(msg[0])
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for k in self.property_map.keys():
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if key in k:
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value.append([k, self.property_map.get(k).body])
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self.pipe.send(umsgpack.packb(value)
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if value else umsgpack.packb(''))
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elif command == b"LIST":
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dump_list = []
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for k,v in self.property_map.items():
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if 'Client' in k:
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dump_list.append([k,v.id.decode()])
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else:
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try:
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dump_list.append([k,v.body['id']])
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except:
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pass
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self.pipe.send(umsgpack.packb(dump_list)
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if dump_list else umsgpack.packb(''))
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elif command == b"STATE":
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self.pipe.send(umsgpack.packb(self.state.value))
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def rcf_net_worker(ctx,store, pipe, serial_product, serial_feed, stop_event):
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agent = RCFClientAgent(ctx,store, pipe)
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server = None
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net_feed = serial_product
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net_product = serial_feed
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while not stop_event.is_set():
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poller = zmq.Poller()
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poller.register(agent.pipe, zmq.POLLIN)
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server_socket = None
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if agent.state == State.INITIAL:
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server = agent.server
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if agent.server:
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logger.debug("%s: waiting for server at %s:%d...",
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agent.id.decode(), server.address, server.port)
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server.snapshot.send(b"SNAPSHOT_REQUEST")
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agent.state = State.SYNCING
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server_socket = server.snapshot
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elif agent.state == State.SYNCING:
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server_socket = server.snapshot
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elif agent.state == State.ACTIVE:
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server_socket = server.subscriber
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if server_socket:
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poller.register(server_socket, zmq.POLLIN)
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try:
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items = dict(poller.poll(1))
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except:
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raise
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break
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if agent.pipe in items:
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agent.control_message()
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elif server_socket in items:
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rcfmsg = message.RCFMessage.recv(server_socket)
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if agent.state == State.SYNCING:
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# CLient snapshot
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if rcfmsg.key == "SNAPSHOT_END":
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client_key = "Client/{}".format(agent.id.decode())
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client_dict = {}
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client_dict = helpers.init_client(key=client_key)
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client_dict['id'] = agent.id.decode()
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client_store = message.RCFMessage(
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key=client_key, id=agent.id, body=client_dict)
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client_store.store(agent.property_map)
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client_store.send(agent.publisher)
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agent.state = State.ACTIVE
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logger.debug("snapshot complete")
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else:
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net_product.put(('LOAD',rcfmsg.key, rcfmsg.body))
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# helpers.load(rcfmsg.key, rcfmsg.body)
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rcfmsg.store(agent.property_map)
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logger.debug("snapshot from {} stored".format(rcfmsg.id))
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elif agent.state == State.ACTIVE:
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if rcfmsg.id != agent.id:
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# with lock:
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# helpers.load(rcfmsg.key, rcfmsg.body)
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rcfmsg.store(agent.property_map)
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net_product.put(('LOAD',rcfmsg.key, rcfmsg.body))
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else:
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logger.debug("{} nothing to do".format(agent.id))
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# Serialisation thread => Net thread
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if not net_feed.empty():
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key, value = net_feed.get()
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if value:
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# Stamp with id
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value['id'] = agent.id.decode()
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# Format massage
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rcfmsg = message.RCFMessage(
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key=key, id=agent.id, body=value)
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rcfmsg.store(agent.property_map)
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rcfmsg.send(agent.publisher)
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else:
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logger.error("Fail to dump ")
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logger.info("exit thread")
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stop = False
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def serial_worker(serial_product, serial_feed):
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logger.info("serial thread launched")
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while True:
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command,key,value = serial_feed.get()
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if command == 'STOP':
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break
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elif command == 'DUMP':
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try:
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value = helpers.dump(key)
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if value:
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serial_product.put((key,value))
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except Exception as e:
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logger.error("{}".format(e))
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elif command == 'LOAD':
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if value:
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try:
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helpers.load(key, value)
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except Exception as e:
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logger.error("{}".format(e))
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logger.info("serial thread stopped")
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def watchdog_worker(serial_feed,interval, stop_event):
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import bpy
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logger.info("watchdog thread launched with {} sec of interval".format(interval))
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while not stop_event.is_set():
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for datatype in helpers.SUPPORTED_TYPES:
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for item in getattr(bpy.data, helpers.CORRESPONDANCE[datatype]):
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key = "{}/{}".format(datatype, item.name)
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try:
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if item.is_dirty:
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logger.debug("{} needs update".format(key))
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serial_feed.put(('DUMP',key,None))
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item.is_dirty = False
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except:
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pass
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time.sleep(interval)
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logger.info("watchdog thread stopped")
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