mirror of
https://github.com/tahoe-lafs/tahoe-lafs.git
synced 2024-12-26 08:01:06 +00:00
f5a803303f
having moved inititalisation into startService to handle tub init cleanly, I neglected the up-call to startService, which wound up not starting the load_monitor. also I changed the 'running' attribute to 'started' since 'running' is the name used internally by MultiService itself.
244 lines
7.8 KiB
Python
244 lines
7.8 KiB
Python
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import os
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import pickle
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import pprint
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import sys
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import time
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from collections import deque
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from twisted.internet import reactor, defer
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from twisted.application import service
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from twisted.application.internet import TimerService
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from zope.interface import implements
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import foolscap
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from foolscap.logging.gatherer import get_local_ip_for
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from allmydata.util import log
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from allmydata.interfaces import RIStatsProvider, RIStatsGatherer, IStatsProducer
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class LoadMonitor(service.MultiService):
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implements(IStatsProducer)
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loop_interval = 1
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num_samples = 60
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def __init__(self, provider, warn_if_delay_exceeds=1):
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service.MultiService.__init__(self)
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self.provider = provider
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self.warn_if_delay_exceeds = warn_if_delay_exceeds
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self.started = False
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self.last = None
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self.stats = deque()
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def startService(self):
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if not self.started:
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self.started = True
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reactor.callLater(self.loop_interval, self.loop)
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service.MultiService.startService(self)
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def stopService(self):
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self.started = False
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def loop(self):
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if not self.started:
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return
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now = time.time()
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if self.last is not None:
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delay = now - self.last - self.loop_interval
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if delay > self.warn_if_delay_exceeds:
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log.msg(format='excessive reactor delay (%ss)', args=(delay,),
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level=log.UNUSUAL)
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self.stats.append(delay)
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while len(self.stats) > self.num_samples:
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self.stats.popleft()
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self.last = now
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reactor.callLater(self.loop_interval, self.loop)
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def get_stats(self):
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if self.stats:
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avg = sum(self.stats) / len(self.stats)
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m_x = max(self.stats)
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else:
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avg = m_x = 0
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return { 'load_monitor.avg_load': avg,
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'load_monitor.max_load': m_x, }
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class StatsProvider(foolscap.Referenceable, service.MultiService):
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implements(RIStatsProvider)
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def __init__(self, node, gatherer_furl):
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service.MultiService.__init__(self)
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self.node = node
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self.gatherer_furl = gatherer_furl
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self.counters = {}
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self.stats_producers = []
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self.load_monitor = LoadMonitor(self)
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self.load_monitor.setServiceParent(self)
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self.register_producer(self.load_monitor)
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def startService(self):
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if self.node:
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d = self.node.when_tub_ready()
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def connect(junk):
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nickname = self.node.get_config('nickname')
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self.node.tub.connectTo(self.gatherer_furl, self._connected, nickname)
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d.addCallback(connect)
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service.MultiService.startService(self)
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def count(self, name, delta):
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val = self.counters.setdefault(name, 0)
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self.counters[name] = val + delta
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def register_producer(self, stats_producer):
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self.stats_producers.append(IStatsProducer(stats_producer))
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def remote_get_stats(self):
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stats = {}
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for sp in self.stats_producers:
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stats.update(sp.get_stats())
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return { 'counters': self.counters, 'stats': stats }
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def _connected(self, gatherer, nickname):
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gatherer.callRemote('provide', self, nickname or '')
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class StatsGatherer(foolscap.Referenceable, service.MultiService):
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implements(RIStatsGatherer)
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poll_interval = 60
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def __init__(self, tub):
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service.MultiService.__init__(self)
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self.tub = tub
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self.clients = {}
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self.nicknames = {}
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def startService(self):
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self.timer = TimerService(self.poll_interval, self.poll)
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self.timer.setServiceParent(self)
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service.MultiService.startService(self)
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def get_furl(self):
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return self.tub.registerReference(self, furlFile='stats_gatherer.furl')
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def get_tubid(self, rref):
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return foolscap.SturdyRef(rref.tracker.getURL()).getTubRef().getTubID()
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def remote_provide(self, provider, nickname):
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tubid = self.get_tubid(provider)
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if tubid == '<unauth>':
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print "WARNING: failed to get tubid for %s (%s)" % (provider, nickname)
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# don't add to clients to poll (polluting data) don't care about disconnect
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return
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self.clients[tubid] = provider
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self.nicknames[tubid] = nickname
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provider.notifyOnDisconnect(self.lost_client, tubid)
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def lost_client(self, tubid):
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del self.clients[tubid]
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del self.nicknames[tubid]
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def poll(self):
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for tubid,client in self.clients.items():
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nickname = self.nicknames.get(tubid)
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d = client.callRemote('get_stats')
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d.addCallback(self.got_stats, tubid, nickname)
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def got_stats(self, stats, tubid, nickname):
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raise NotImplementedError()
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class StdOutStatsGatherer(StatsGatherer):
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def remote_provide(self, provider, nickname):
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tubid = self.get_tubid(provider)
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print 'connect "%s" [%s]' % (nickname, tubid)
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StatsGatherer.remote_provide(self, provider, nickname)
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def lost_client(self, tubid):
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print 'disconnect "%s" [%s]:' % (self.nicknames[tubid], tubid)
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StatsGatherer.lost_client(self, tubid)
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def got_stats(self, stats, tubid, nickname):
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print '"%s" [%s]:' % (nickname, tubid)
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pprint.pprint(stats)
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class PickleStatsGatherer(StdOutStatsGatherer): # for connect/disconnect notifications;
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#class PickleStatsGatherer(StatsGatherer):
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def __init__(self, tub, picklefile):
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StatsGatherer.__init__(self, tub)
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self.picklefile = picklefile
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if os.path.exists(picklefile):
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f = open(picklefile, 'rb')
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self.gathered_stats = pickle.load(f)
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f.close()
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else:
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self.gathered_stats = {}
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def got_stats(self, stats, tubid, nickname):
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s = self.gathered_stats.setdefault(tubid, {})
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s['timestamp'] = time.time()
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s['nickname'] = nickname
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s['stats'] = stats
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self.dump_pickle()
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def dump_pickle(self):
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tmp = "%s.tmp" % (self.picklefile,)
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f = open(tmp, 'wb')
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pickle.dump(self.gathered_stats, f)
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f.close()
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if os.path.exists(self.picklefile):
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os.unlink(self.picklefile)
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os.rename(tmp, self.picklefile)
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class GathererApp(object):
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def __init__(self):
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d = self.setup_tub()
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d.addCallback(self._tub_ready)
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def setup_tub(self):
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self._tub = foolscap.Tub(certFile="stats_gatherer.pem")
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self._tub.setOption("logLocalFailures", True)
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self._tub.setOption("logRemoteFailures", True)
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self._tub.startService()
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portnumfile = "portnum"
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try:
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portnum = int(open(portnumfile, "r").read())
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except (EnvironmentError, ValueError):
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portnum = 0
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self._tub.listenOn("tcp:%d" % portnum)
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d = defer.maybeDeferred(get_local_ip_for)
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d.addCallback(self._set_location)
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d.addCallback(lambda res: self._tub)
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return d
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def _set_location(self, local_address):
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if local_address is None:
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local_addresses = ["127.0.0.1"]
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else:
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local_addresses = [local_address, "127.0.0.1"]
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l = self._tub.getListeners()[0]
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portnum = l.getPortnum()
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portnumfile = "portnum"
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open(portnumfile, "w").write("%d\n" % portnum)
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local_addresses = [ "%s:%d" % (addr, portnum,)
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for addr in local_addresses ]
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assert len(local_addresses) >= 1
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location = ",".join(local_addresses)
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self._tub.setLocation(location)
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def _tub_ready(self, tub):
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sg = PickleStatsGatherer(tub, 'stats.pickle')
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sg.setServiceParent(tub)
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sg.verbose = True
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print '\nStatsGatherer: %s\n' % (sg.get_furl(),)
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def main(argv):
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ga = GathererApp()
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reactor.run()
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if __name__ == '__main__':
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main(sys.argv)
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