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245 lines
8.8 KiB
245 lines
8.8 KiB
# Copyright 2012 the V8 project authors. All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import multiprocessing
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import os
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import shutil
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import subprocess
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import threading
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import time
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from . import daemon
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from . import local_handler
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from . import presence_handler
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from . import signatures
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from . import status_handler
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from . import work_handler
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from ..network import perfdata
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class Server(daemon.Daemon):
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def __init__(self, pidfile, root, stdin="/dev/null",
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stdout="/dev/null", stderr="/dev/null"):
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super(Server, self).__init__(pidfile, stdin, stdout, stderr)
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self.root = root
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self.local_handler = None
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self.local_handler_thread = None
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self.work_handler = None
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self.work_handler_thread = None
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self.status_handler = None
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self.status_handler_thread = None
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self.presence_daemon = None
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self.presence_daemon_thread = None
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self.peers = []
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self.jobs = multiprocessing.cpu_count()
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self.peer_list_lock = threading.Lock()
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self.perf_data_lock = None
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self.presence_daemon_lock = None
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self.datadir = os.path.join(self.root, "data")
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pubkey_fingerprint_filename = os.path.join(self.datadir, "mypubkey")
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with open(pubkey_fingerprint_filename) as f:
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self.pubkey_fingerprint = f.read().strip()
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self.relative_perf_filename = os.path.join(self.datadir, "myperf")
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if os.path.exists(self.relative_perf_filename):
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with open(self.relative_perf_filename) as f:
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try:
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self.relative_perf = float(f.read())
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except:
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self.relative_perf = 1.0
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else:
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self.relative_perf = 1.0
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def run(self):
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os.nice(20)
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self.ip = presence_handler.GetOwnIP()
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self.perf_data_manager = perfdata.PerfDataManager(self.datadir)
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self.perf_data_lock = threading.Lock()
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self.local_handler = local_handler.LocalSocketServer(self)
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self.local_handler_thread = threading.Thread(
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target=self.local_handler.serve_forever)
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self.local_handler_thread.start()
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self.work_handler = work_handler.WorkSocketServer(self)
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self.work_handler_thread = threading.Thread(
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target=self.work_handler.serve_forever)
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self.work_handler_thread.start()
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self.status_handler = status_handler.StatusSocketServer(self)
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self.status_handler_thread = threading.Thread(
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target=self.status_handler.serve_forever)
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self.status_handler_thread.start()
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self.presence_daemon = presence_handler.PresenceDaemon(self)
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self.presence_daemon_thread = threading.Thread(
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target=self.presence_daemon.serve_forever)
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self.presence_daemon_thread.start()
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self.presence_daemon.FindPeers()
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time.sleep(0.5) # Give those peers some time to reply.
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with self.peer_list_lock:
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for p in self.peers:
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if p.address == self.ip: continue
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status_handler.RequestTrustedPubkeys(p, self)
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while True:
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try:
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self.PeriodicTasks()
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time.sleep(60)
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except Exception, e:
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print("MAIN LOOP EXCEPTION: %s" % e)
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self.Shutdown()
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break
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except KeyboardInterrupt:
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self.Shutdown()
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break
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def Shutdown(self):
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with open(self.relative_perf_filename, "w") as f:
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f.write("%s" % self.relative_perf)
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self.presence_daemon.shutdown()
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self.presence_daemon.server_close()
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self.local_handler.shutdown()
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self.local_handler.server_close()
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self.work_handler.shutdown()
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self.work_handler.server_close()
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self.status_handler.shutdown()
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self.status_handler.server_close()
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def PeriodicTasks(self):
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# If we know peers we don't trust, see if someone else trusts them.
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with self.peer_list_lock:
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for p in self.peers:
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if p.trusted: continue
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if self.IsTrusted(p.pubkey):
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p.trusted = True
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status_handler.ITrustYouNow(p)
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continue
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for p2 in self.peers:
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if not p2.trusted: continue
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status_handler.TryTransitiveTrust(p2, p.pubkey, self)
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# TODO: Ping for more peers waiting to be discovered.
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# TODO: Update the checkout (if currently idle).
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def AddPeer(self, peer):
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with self.peer_list_lock:
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for p in self.peers:
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if p.address == peer.address:
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return
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self.peers.append(peer)
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if peer.trusted:
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status_handler.ITrustYouNow(peer)
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def DeletePeer(self, peer_address):
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with self.peer_list_lock:
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for i in xrange(len(self.peers)):
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if self.peers[i].address == peer_address:
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del self.peers[i]
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return
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def MarkPeerAsTrusting(self, peer_address):
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with self.peer_list_lock:
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for p in self.peers:
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if p.address == peer_address:
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p.trusting_me = True
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break
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def UpdatePeerPerformance(self, peer_address, performance):
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with self.peer_list_lock:
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for p in self.peers:
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if p.address == peer_address:
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p.relative_performance = performance
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def CopyToTrusted(self, pubkey_filename):
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with open(pubkey_filename, "r") as f:
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lines = f.readlines()
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fingerprint = lines[-1].strip()
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target_filename = self._PubkeyFilename(fingerprint)
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shutil.copy(pubkey_filename, target_filename)
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with self.peer_list_lock:
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for peer in self.peers:
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if peer.address == self.ip: continue
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if peer.pubkey == fingerprint:
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status_handler.ITrustYouNow(peer)
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else:
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result = self.SignTrusted(fingerprint)
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status_handler.NotifyNewTrusted(peer, result)
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return fingerprint
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def _PubkeyFilename(self, pubkey_fingerprint):
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return os.path.join(self.root, "trusted", "%s.pem" % pubkey_fingerprint)
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def IsTrusted(self, pubkey_fingerprint):
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return os.path.exists(self._PubkeyFilename(pubkey_fingerprint))
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def ListTrusted(self):
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path = os.path.join(self.root, "trusted")
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if not os.path.exists(path): return []
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return [ f[:-4] for f in os.listdir(path) if f.endswith(".pem") ]
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def SignTrusted(self, pubkey_fingerprint):
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if not self.IsTrusted(pubkey_fingerprint):
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return []
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filename = self._PubkeyFilename(pubkey_fingerprint)
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result = signatures.ReadFileAndSignature(filename) # Format: [key, sig].
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return [pubkey_fingerprint, result[0], result[1], self.pubkey_fingerprint]
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def AcceptNewTrusted(self, data):
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# The format of |data| matches the return value of |SignTrusted()|.
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if not data: return
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fingerprint = data[0]
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pubkey = data[1]
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signature = data[2]
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signer = data[3]
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if not self.IsTrusted(signer):
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return
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if self.IsTrusted(fingerprint):
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return # Already trust this guy.
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filename = self._PubkeyFilename(fingerprint)
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signer_pubkeyfile = self._PubkeyFilename(signer)
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if not signatures.VerifySignature(filename, pubkey, signature,
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signer_pubkeyfile):
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return
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return # Nothing more to do.
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def AddPerfData(self, test_key, duration, arch, mode):
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data_store = self.perf_data_manager.GetStore(arch, mode)
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data_store.RawUpdatePerfData(str(test_key), duration)
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def CompareOwnPerf(self, test, arch, mode):
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data_store = self.perf_data_manager.GetStore(arch, mode)
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observed = data_store.FetchPerfData(test)
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if not observed: return
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own_perf_estimate = observed / test.duration
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with self.perf_data_lock:
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kLearnRateLimiter = 9999
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self.relative_perf *= kLearnRateLimiter
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self.relative_perf += own_perf_estimate
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self.relative_perf /= (kLearnRateLimiter + 1)
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