def dispy_provisional_result(result):
"""Sends provisional result of computation back to the client.
In some cases, such as optimizations, computations may send
current (best) result to the client and continue computation (for
next iteration) so that the client may decide to terminate
computations based on the results or alter computations if
necessary. The computations can use this function in such cases
with the current result of computation as argument.
"""
__dispy_job_reply = __dispy_job_info.job_reply
logger.debug('Sending provisional result for job %s to %s',
__dispy_job_reply.uid, __dispy_job_info.reply_addr)
__dispy_job_reply.status = DispyJob.ProvisionalResult
__dispy_job_reply.result = result
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock = AsynCoroSocket(sock, blocking=True, keyfile=__dispy_job_keyfile,
certfile=__dispy_job_certfile)
sock.settimeout(2)
try:
sock.connect(__dispy_job_info.reply_addr)
sock.send_msg(serialize(__dispy_job_reply))
ack = sock.recv_msg()
except:
logger.warning("Couldn't send provisional results %s:\n%s",
str(result), traceback.format_exc())
sock.close()
def _shutdown(self, coro=None):
assert coro is not None
yield self.lock.acquire()
job_infos = self.job_infos
self.job_infos = {}
computations = self.computations.items()
self.computations = {}
if self.reply_Q:
self.reply_Q.put(None)
self.lock.release()
for uid, job_info in job_infos.iteritems():
job_info.proc.terminate()
logger.debug('process for %s is killed', uid)
if isinstance(job_info.proc, multiprocessing.Process):
job_info.proc.join(2)
else:
job_info.proc.wait()
for cid, compute in computations:
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock = AsynCoroSocket(sock, blocking=False)
sock.settimeout(2)
logger.debug('Sending TERMINATE to %s', compute.scheduler_ip_addr)
data = serialize({'ip_addr':self.address[0], 'port':self.address[1],
'sign':self.signature})
yield sock.sendto('TERMINATED:' + data, (compute.scheduler_ip_addr,
compute.scheduler_port))
sock.close()
def send_pong_msg(self, coro=None):
ping_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ping_sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
ping_sock = AsynCoroSocket(ping_sock, blocking=False)
pong_msg = {'ip_addr':self.ext_ip_addr, 'name':self.name, 'port':self.address[1],
'cpus':self.cpus, 'sign':self.signature, 'version':_dispy_version}
pong_msg = 'PONG:' + serialize(pong_msg)
yield ping_sock.sendto(pong_msg, ('<broadcast>', self.scheduler_port))
ping_sock.close()
def _send_job_reply(self, job_info, resending=False, coro=None):
"""Internal use only.
"""
assert coro is not None
job_reply = job_info.job_reply
logger.debug('Sending result for job %s (%s) to %s',
job_reply.uid, job_reply.status, str(job_info.reply_addr))
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock = AsynCoroSocket(sock, blocking=False, certfile=self.certfile, keyfile=self.keyfile)
sock.settimeout(2)
try:
yield sock.connect(job_info.reply_addr)
yield sock.send_msg(serialize(job_reply))
ack = yield sock.recv_msg()
assert ack == 'ACK'
except:
logger.error("Couldn't send results for %s to %s",
job_reply.uid, str(job_info.reply_addr))
# store job result even if computation has not enabled
# fault recovery; user may be able to access node and
# retrieve result manually
f = os.path.join(job_info.compute_dest_path, '_dispy_job_reply_%s' % job_reply.uid)
logger.debug('storing results for job %s', job_reply.uid)
try:
fd = open(f, 'wb')
pickle.dump(job_reply, fd)
fd.close()
except:
logger.debug('Could not save results for job %s', job_reply.uid)
else:
yield self.lock.acquire()
compute = self.computations.get(job_info.compute_id, None)
if compute is not None:
compute.pending_results += 1
self.lock.release()
finally:
sock.close()
if not resending:
yield self.lock.acquire()
self.avail_cpus += 1
compute = self.computations.get(job_info.compute_id, None)
if compute is None:
logger.warning('Computation for %s / %s is invalid!',
job_reply.uid, job_info.compute_id)
else:
# technically last_pulse should be updated only
# when successfully sent reply, but no harm if done
# otherwise, too
compute.last_pulse = time.time()
compute.pending_jobs -= 1
if compute.pending_jobs == 0 and compute.zombie:
self.cleanup_computation(compute)
self.lock.release()
def handle_proxy(client, address,coro=None):
if REQUEST_TIMEOUT:
client.settimeout(REQUEST_TIMEOUT)
try:
data = yield client.recv(MAX_BODY_SIZE)
datas = parse_request(data)
if not datas:return
# yield remote_sock.sendall("GET / HTTP/1.1")
if datas['method'] in ('CONNECT'):
yield client.sendall('%s 200 Connection established\n'\
%PROTOCOL_VERSION)
else:
sock = socket.socket(datas['sfamily'])
sock.connect(datas['remote_addr'])
remote = AsynCoroSocket(sock)
yield remote.sendall(datas['buffer'])
logger.info("Request[%s] - %s"%(id(client),datas['buffer'][:256].replace("\r\n",";")))
_recv = True
while _recv:
try:
resp = yield remote.recv(1500)
except:
_recv = False
else:
if resp:
yield client.sendall(resp)
else:
_recv = False
yield client.close()
yield remote.close()
except Exception,e:
logger.error(str(e))
def _send_job_reply(self, job_info, resending=False, coro=None):
"""Internal use only.
"""
assert coro is not None
job_reply = job_info.job_reply
logger.debug('Sending result for job %s (%s) to %s',
job_reply.uid, job_reply.status, str(job_info.reply_addr))
if not resending:
self.avail_cpus += 1
assert self.avail_cpus <= self.num_cpus
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock = AsynCoroSocket(sock, blocking=False, certfile=self.certfile, keyfile=self.keyfile)
sock.settimeout(5)
try:
yield sock.connect(job_info.reply_addr)
yield sock.send_msg(serialize(job_reply))
ack = yield sock.recv_msg()
assert ack == 'ACK'
compute = self.computations.get(job_info.compute_id, None)
if compute is not None:
compute.last_pulse = time.time()
except:
logger.error("Couldn't send results for %s to %s : %s",
job_reply.uid, str(job_info.reply_addr), traceback.format_exc())
# store job result even if computation has not enabled
# fault recovery; user may be able to access node and
# retrieve result manually
f = os.path.join(job_info.compute_dest_path, '_dispy_job_reply_%s' % job_reply.uid)
logger.debug('storing results for job %s', job_reply.uid)
try:
fd = open(f, 'wb')
pickle.dump(job_reply, fd)
fd.close()
except:
logger.debug('Could not save results for job %s', job_reply.uid)
else:
compute = self.computations.get(job_info.compute_id, None)
if compute is not None:
compute.pending_results += 1
finally:
sock.close()
if not resending:
compute = self.computations.get(job_info.compute_id, None)
if compute is not None:
compute.pending_jobs -= 1
if compute.pending_jobs == 0 and compute.zombie:
self.cleanup_computation(compute)
class Peer_Remote(): # outbound connections
def __init__(self, network_service, remote_ip, remote_port, context=None):
self.exit = False
self.network_service = network_service
self.remote_ip = remote_ip
self.remote_port = remote_port
self.context = context
Coro(self._server_connect)
def _server_connect(self, coro=None):
try:
#logger.debug('CLIENT: connecting to peer at %s:%s', self.remote_ip, str(self.remote_port))
self.outbound_socket = AsynCoroSocket(socket.socket(socket.AF_INET, socket.SOCK_STREAM))
self.outbound_socket.setsockopt(socket.SOL_TCP, socket.TCP_NODELAY, 1) # if you're gonna act like UDP
yield self.outbound_socket.connect((self.remote_ip, self.remote_port))
#logger.debug('CLIENT: connected to peer at %s:%s', self.remote_ip, str(self.remote_port))
self._send_coro = Coro(self._client_send)
#Coro(self._client_recv) # unneeded if we don't utilize bi-directional communication in UDP style messaging
self.network_service.on_server_connect(self, self.context)
except:
show_error()
#raise
def _client_recv(self, coro=None):
while True:
try:
data = yield self.outbound_socket.recv_msg()
if data == None or len(data) == 0 or self.exit:
break
#logger.debug('CLIENT: received data to peer at %s:%s (Data: %s)', self.remote_ip, str(self.remote_port), data)
self.network_service.on_peer_data_received(data)
except:
show_error()
#break
#print "Coro(_client_recv) exiting"
def _client_send(self, coro=None):
coro.set_daemon()
while True:
try:
cmd, state = yield self._send_coro.receive()
data, context = state
if cmd == NETWORK_PEER_DISCONNECT:
self.network_service.on_client_disconnected(context)
break
#logger.debug('CLIENT: sending data to %s:%s (Data is: %s)', self.remote_ip, self.remote_port,data)
yield self.outbound_socket.send_msg(data)
self.network_service.on_client_data_sent(context)
except:
show_error()
#break
self.outbound_socket.shutdown(socket.SHUT_RDWR)
self.outbound_socket.close()
#logger.debug('CLIENT: disconnected from %s:%s', self.remote_ip, str(self.remote_port))
#print "Coro(_client_send) exiting"
def send(self, data, context):
if not self.exit:
self._send_coro.send((None, (data, context)))
def stop(self, context=None):
self.exit = True
#logger.debug('CLIENT: disconnecting from %s:%s', self.remote_ip, str(self.remote_port))
self._send_coro.send((NETWORK_PEER_DISCONNECT, (None,context)))
def timer_task(self, coro=None):
coro.set_daemon()
reset = True
last_pulse_time = last_zombie_time = time.time()
while True:
if reset:
if self.pulse_interval and self.zombie_interval:
timeout = min(self.pulse_interval, self.zombie_interval)
self.zombie_interval = max(5 * self.pulse_interval, self.zombie_interval)
else:
timeout = max(self.pulse_interval, self.zombie_interval)
self.zombie_interval = self.zombie_interval
reset = yield coro.suspend(timeout)
now = time.time()
if self.pulse_interval and (now - last_pulse_time) >= self.pulse_interval:
n = self.cpus - self.avail_cpus
assert n >= 0
if n > 0 and self.scheduler_ip_addr:
last_pulse_time = now
msg = 'PULSE:' + serialize({'ip_addr':self.ext_ip_addr,
'port':self.udp_sock.getsockname()[1], 'cpus':n})
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock = AsynCoroSocket(sock, blocking=False)
sock.settimeout(1)
yield sock.sendto(msg, (self.scheduler_ip_addr, self.scheduler_port))
sock.close()
if self.zombie_interval and (now - last_zombie_time) >= self.zombie_interval:
last_zombie_time = now
yield self.lock.acquire()
for compute in self.computations.itervalues():
if (now - compute.last_pulse) > self.zombie_interval:
compute.zombie = True
zombies = [compute for compute in self.computations.itervalues() \
if compute.zombie and compute.pending_jobs == 0]
for compute in zombies:
logger.debug('Deleting zombie computation "%s"', compute.name)
self.cleanup_computation(compute)
phoenix = [compute for compute in self.computations.itervalues() \
if not compute.zombie and compute.pending_results]
for compute in phoenix:
files = [f for f in os.listdir(compute.dest_path) \
if f.startswith('_dispy_job_reply_')]
# limit number queued so as not to take up too much time
files = files[:min(len(files), 128)]
for f in files:
result_file = os.path.join(compute.dest_path, f)
try:
fd = open(result_file, 'rb')
job_result = pickle.load(fd)
fd.close()
except:
logger.debug('Could not load "%s"', result_file)
logger.debug(traceback.format_exc())
continue
try:
os.remove(result_file)
except:
logger.debug('Could not remove "%s"', result_file)
compute.pending_results -= 1
job_info = _DispyJobInfo(job_result, (compute.scheduler_ip_addr,
compute.job_result_port), compute)
Coro(self._send_job_reply, job_info, resending=True)
self.lock.release()
for compute in zombies:
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock = AsynCoroSocket(sock, blocking=False)
sock.settimeout(1)
logger.debug('Sending TERMINATE to %s', compute.scheduler_ip_addr)
data = serialize({'ip_addr':self.address[0], 'port':self.address[1],
'sign':self.signature})
yield sock.sendto('TERMINATED:%s' % data, (compute.scheduler_ip_addr,
compute.scheduler_port))
sock.close()
if self.scheduler_ip_addr is None and self.avail_cpus == self.cpus:
self.pulse_interval = None
reset = True
yield self.send_pong_msg(coro=coro)
def tcp_serve_task(self, conn, addr, coro=None):
conn = AsynCoroSocket(conn, blocking=False,
keyfile=self.keyfile, certfile=self.certfile)
def job_request_task(msg):
assert coro is not None
try:
_job = unserialize(msg)
except:
logger.debug('Ignoring job request from %s', addr[0])
logger.debug(traceback.format_exc())
raise StopIteration
yield self.lock.acquire()
compute = self.computations.get(_job.compute_id, None)
if compute is not None:
if compute.scheduler_ip_addr != self.scheduler_ip_addr:
compute = None
yield self.lock.release()
if self.avail_cpus == 0:
logger.warning('All cpus busy')
try:
yield conn.send_msg('NAK (all cpus busy)')
except:
pass
raise StopIteration
elif compute is None:
logger.warning('Invalid computation %s', _job.compute_id)
try:
yield conn.send_msg('NAK (invalid computation %s)' % _job.compute_id)
except:
pass
raise StopIteration
reply_addr = (compute.scheduler_ip_addr, compute.job_result_port)
logger.debug('New job id %s from %s', _job.uid, addr[0])
files = []
for f in _job.files:
tgt = os.path.join(compute.dest_path, os.path.basename(f['name']))
try:
fd = open(tgt, 'wb')
fd.write(f['data'])
fd.close()
except:
logger.warning('Could not save file "%s"', tgt)
continue
try:
os.utime(tgt, (f['stat'].st_atime, f['stat'].st_mtime))
os.chmod(tgt, stat.S_IMODE(f['stat'].st_mode))
except:
logger.debug('Could not set modes for "%s"', tgt)
files.append(tgt)
_job.files = files
if compute.type == _Compute.func_type:
reply = _JobReply(_job, self.ext_ip_addr)
job_info = _DispyJobInfo(reply, reply_addr, compute)
args = (job_info, self.certfile, self.keyfile,
_job.args, _job.kwargs, self.reply_Q,
compute.name, compute.code, compute.dest_path, _job.files)
try:
yield conn.send_msg('ACK')
except:
logger.warning('Failed to send response for new job to %s', str(addr))
raise StopIteration
job_info.job_reply.status = DispyJob.Running
job_info.proc = multiprocessing.Process(target=_dispy_job_func, args=args)
yield self.lock.acquire()
self.avail_cpus -= 1
compute.pending_jobs += 1
self.job_infos[_job.uid] = job_info
self.lock.release()
job_info.proc.start()
raise StopIteration
elif compute.type == _Compute.prog_type:
try:
yield conn.send_msg('ACK')
except:
logger.warning('Failed to send response for new job to %s', str(addr))
raise StopIteration
reply = _JobReply(_job, self.ext_ip_addr)
job_info = _DispyJobInfo(reply, reply_addr, compute)
job_info.job_reply.status = DispyJob.Running
yield self.lock.acquire()
self.job_infos[_job.uid] = job_info
self.avail_cpus -= 1
compute.pending_jobs += 1
yield self.lock.release()
prog_thread = threading.Thread(target=self.__job_program, args=(_job, job_info))
prog_thread.start()
raise StopIteration
else:
try:
yield conn.send_msg('NAK (invalid computation type "%s")' % compute.type)
except:
logger.warning('Failed to send response for new job to %s', str(addr))
def add_computation_task(msg):
assert coro is not None
try:
compute = unserialize(msg)
except:
logger.debug('Ignoring computation request from %s', addr[0])
try:
yield conn.send_msg('Invalid computation request')
except:
logger.warning('Failed to send reply to %s', str(addr))
raise StopIteration
yield self.lock.acquire()
if not ((self.scheduler_ip_addr is None) or
(self.scheduler_ip_addr == compute.scheduler_ip_addr and \
self.scheduler_port == compute.scheduler_port)):
logger.debug('Ignoring computation request from %s: %s, %s, %s',
compute.scheduler_ip_addr, self.scheduler_ip_addr,
self.avail_cpus, self.cpus)
self.lock.release()
try:
yield conn.send_msg('Busy')
except:
pass
raise StopIteration
resp = 'ACK'
if compute.dest_path and isinstance(compute.dest_path, str):
compute.dest_path = compute.dest_path.strip(os.sep)
else:
for x in xrange(20):
compute.dest_path = os.urandom(8).encode('hex')
if compute.dest_path.find(os.sep) >= 0:
continue
if not os.path.isdir(os.path.join(self.dest_path_prefix, compute.dest_path)):
break
else:
logger.warning('Failed to create unique dest_path: %s', compute.dest_path)
resp = 'NACK'
compute.dest_path = os.path.join(self.dest_path_prefix, compute.dest_path)
try:
os.makedirs(compute.dest_path)
os.chmod(compute.dest_path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
logger.debug('dest_path for "%s": %s', compute.name, compute.dest_path)
except:
logger.warning('Invalid destination path: "%s"', compute.dest_path)
if os.path.isdir(compute.dest_path):
os.rmdir(compute.dest_path)
self.lock.release()
try:
yield conn.send_msg('NACK (Invalid dest_path)')
except:
logger.warning('Failed to send reply to %s', str(addr))
raise StopIteration
if compute.id in self.computations:
logger.warning('Computation "%s" (%s) is being replaced',
compute.name, compute.id)
setattr(compute, 'last_pulse', time.time())
setattr(compute, 'pending_jobs', 0)
setattr(compute, 'pending_results', 0)
setattr(compute, 'zombie', False)
logger.debug('xfer_files given: %s', ','.join(xf.name for xf in compute.xfer_files))
if compute.type == _Compute.func_type:
try:
code = compile(compute.code, '<string>', 'exec')
except:
logger.warning('Computation "%s" could not be compiled', compute.name)
if os.path.isdir(compute.dest_path):
os.rmdir(compute.dest_path)
self.lock.release()
try:
yield conn.send_msg('NACK (Compilation failed)')
except:
logger.warning('Failed to send reply to %s', str(addr))
raise StopIteration
compute.code = marshal.dumps(code)
elif compute.type == _Compute.prog_type:
assert not compute.code
compute.name = os.path.join(compute.dest_path, os.path.basename(compute.name))
xfer_files = []
for xf in compute.xfer_files:
tgt = os.path.join(compute.dest_path, os.path.basename(xf.name))
try:
if _same_file(tgt, xf):
logger.debug('Ignoring file "%s" / "%s"', xf.name, tgt)
if tgt not in self.file_uses:
self.file_uses[tgt] = 0
self.file_uses[tgt] += 1
continue
except:
pass
if self.max_file_size and xf.stat_buf.st_size > self.max_file_size:
resp = 'NACK (file "%s" too big)' % xf.name
else:
xfer_files.append(xf)
if resp == 'ACK' and ((self.scheduler_ip_addr is not None) and \
(self.scheduler_ip_addr != compute.scheduler_ip_addr)):
resp = 'NACK (busy)'
if resp == 'ACK':
self.computations[compute.id] = compute
self.scheduler_ip_addr = compute.scheduler_ip_addr
self.scheduler_port = compute.scheduler_port
self.pulse_interval = compute.pulse_interval
self.lock.release()
if xfer_files:
resp += ':XFER_FILES:' + serialize(xfer_files)
try:
yield conn.send_msg(resp)
except:
assert self.scheduler_ip_addr == compute.scheduler_ip_addr
yield self.lock.acquire()
del self.computations[compute.id]
self.scheduler_ip_addr = None
self.scheduler_port = None
self.pulse_interval = None
self.lock.release()
else:
self.timer_coro.resume(True)
else:
self.lock.release()
if os.path.isdir(compute.dest_path):
os.rmdir(compute.dest_path)
try:
yield conn.send_msg(resp)
except:
pass
def xfer_file_task(msg):
assert coro is not None
try:
xf = unserialize(msg)
except:
logger.debug('Ignoring file trasnfer request from %s', addr[0])
raise StopIteration
resp = ''
if xf.compute_id not in self.computations:
logger.error('computation "%s" is invalid' % xf.compute_id)
raise StopIteration
tgt = os.path.join(self.computations[xf.compute_id].dest_path,
os.path.basename(xf.name))
if os.path.isfile(tgt):
if _same_file(tgt, xf):
yield self.lock.acquire()
if tgt in self.file_uses:
self.file_uses[tgt] += 1
else:
self.file_uses[tgt] = 1
yield self.lock.release()
resp = 'ACK'
else:
logger.warning('File "%s" already exists with different status as "%s"',
xf.name, tgt)
if not resp:
logger.debug('Copying file %s to %s (%s)', xf.name, tgt, xf.stat_buf.st_size)
try:
fd = open(tgt, 'wb')
n = 0
while n < xf.stat_buf.st_size:
data = yield conn.recvall(min(xf.stat_buf.st_size-n, 10240000))
if not data:
break
fd.write(data)
n += len(data)
if self.max_file_size and n > self.max_file_size:
logger.warning('File "%s" is too big (%s); it is truncated', tgt, n)
break
fd.close()
if n < xf.stat_buf.st_size:
resp = 'NAK (read only %s bytes)' % n
else:
resp = 'ACK'
logger.debug('Copied file %s, %s', tgt, resp)
os.utime(tgt, (xf.stat_buf.st_atime, xf.stat_buf.st_mtime))
os.chmod(tgt, stat.S_IMODE(xf.stat_buf.st_mode))
self.file_uses[tgt] = 1
except:
logger.warning('Copying file "%s" failed with "%s"',
xf.name, traceback.format_exc())
resp = 'NACK'
try:
yield conn.send_msg(resp)
except:
logger.debug('Could not send reply for "%s"', xf.name)
raise StopIteration # xfer_file_task
def terminate_job_task(msg):
assert coro is not None
yield self.lock.acquire()
try:
_job = unserialize(msg)
compute = self.computations[_job.compute_id]
assert addr[0] == compute.scheduler_ip_addr
job_info = self.job_infos.pop(_job.uid, None)
except:
logger.debug('Ignoring job request from %s', addr[0])
raise StopIteration
finally:
self.lock.release()
if job_info is None:
logger.debug('Job %s completed; ignoring cancel request from %s',
_job.uid, addr[0])
raise StopIteration
logger.debug('Terminating job %s', _job.uid)
job_info.proc.terminate()
if isinstance(job_info.proc, multiprocessing.Process):
for x in xrange(20):
if job_info.proc.is_alive():
yield coro.sleep(0.1)
else:
logger.debug('Process "%s" for job %s terminated', compute.name, _job.uid)
break
else:
logger.warning('Could not kill process %s', compute.name)
raise StopIteration
else:
assert isinstance(job_info.proc, subprocess.Popen)
for x in xrange(20):
rc = job_info.proc.poll()
logger.debug('Program "%s" for job %s terminated with %s',
compute.name, _job.uid, rc)
if rc is not None:
break
if x == 10:
logger.debug('Killing job %s', _job.uid)
job_info.proc.kill()
yield coro.sleep(0.1)
else:
logger.warning('Could not kill process %s', compute.name)
raise StopIteration
reply_addr = (addr[0], compute.job_result_port)
reply = _JobReply(_job, self.ext_ip_addr)
job_info = _DispyJobInfo(reply, reply_addr, compute)
reply.status = DispyJob.Terminated
yield self._send_job_reply(job_info, resending=False, coro=coro)
def retrieve_job_task(msg):
assert coro is not None
try:
req = unserialize(msg)
assert req['uid'] is not None
assert req['hash'] is not None
assert req['compute_id'] is not None
except:
resp = serialize('Invalid job')
try:
yield conn.send_msg(resp)
except:
pass
raise StopIteration
job_info = self.job_infos.get(req['uid'], None)
resp = None
if job_info is not None:
try:
yield conn.send_msg(serialize(job_info.job_reply))
ack = yield conn.recv_msg()
# no need to check ack
except:
logger.debug('Could not send reply for job %s', req['uid'])
raise StopIteration
for d in os.listdir(self.dest_path_prefix):
info_file = os.path.join(self.dest_path_prefix, d,
'_dispy_job_reply_%s' % req['uid'])
if os.path.isfile(info_file):
try:
fd = open(info_file, 'rb')
job_reply = pickle.load(fd)
fd.close()
except:
job_reply = None
if hasattr(job_reply, 'hash') and job_reply.hash == req['hash']:
try:
yield conn.send_msg(serialize(job_reply))
ack = yield conn.recv_msg()
assert ack == 'ACK'
except:
logger.debug('Could not send reply for job %s', req['uid'])
raise StopIteration
try:
os.remove(info_file)
yield self.lock.acquire()
compute = self.computations.get(req['compute_id'], None)
if compute is not None:
compute.pending_results -= 1
if compute.pending_results == 0:
compute.zombie = True
self.cleanup_computation(compute)
self.lock.release()
except:
logger.debug('Could not remove "%s"', info_file)
raise StopIteration
else:
resp = serialize('Invalid job: %s' % req['uid'])
if resp:
try:
yield conn.send_msg(resp)
except:
pass
# tcp_serve_task starts
try:
req = yield conn.recvall(len(self.auth_code))
assert req == self.auth_code
except:
logger.warning('Ignoring request; invalid client authentication?')
conn.close()
raise StopIteration
msg = yield conn.recv_msg()
if not msg:
conn.close()
raise StopIteration
if msg.startswith('JOB:'):
msg = msg[len('JOB:'):]
yield job_request_task(msg)
conn.close()
elif msg.startswith('COMPUTE:'):
msg = msg[len('COMPUTE:'):]
yield add_computation_task(msg)
conn.close()
elif msg.startswith('FILEXFER:'):
msg = msg[len('FILEXFER:'):]
yield xfer_file_task(msg)
conn.close()
elif msg.startswith('DEL_COMPUTE:'):
msg = msg[len('DEL_COMPUTE:'):]
try:
info = unserialize(msg)
compute_id = info['ID']
yield self.lock.acquire()
compute = self.computations.get(compute_id, None)
if compute is None:
logger.warning('Computation "%s" is not valid', compute_id)
else:
compute.zombie = True
self.cleanup_computation(compute)
self.lock.release()
except:
logger.debug('Deleting computation failed with %s', traceback.format_exc())
# raise
conn.close()
elif msg.startswith('TERMINATE_JOB:'):
msg = msg[len('TERMINATE_JOB:'):]
yield terminate_job_task(msg)
conn.close()
elif msg.startswith('RETRIEVE_JOB:'):
msg = msg[len('RETRIEVE_JOB:'):]
yield retrieve_job_task(msg)
conn.close()
else:
logger.warning('Invalid request "%s" from %s',
msg[:min(10, len(msg))], addr[0])
resp = 'NAK (invalid command: %s)' % (msg[:min(10, len(msg))])
try:
yield conn.send_msg(resp)
except:
logger.warning('Failed to send reply to %s', str(addr))
conn.close()
def udp_server(self, scheduler_ip_addr, coro=None):
assert coro is not None
coro.set_daemon()
if self.avail_cpus == self.cpus:
yield self.send_pong_msg(coro=coro)
pong_msg = {'ip_addr':self.ext_ip_addr, 'name':self.name, 'port':self.address[1],
'cpus':self.cpus, 'sign':self.signature, 'version':_dispy_version}
pong_msg = 'PONG:' + serialize(pong_msg)
if scheduler_ip_addr:
sock = AsynCoroSocket(socket.socket(socket.AF_INET, socket.SOCK_DGRAM))
try:
yield sock.sendto(pong_msg, (scheduler_ip_addr, self.scheduler_port))
except:
logger.warning("Couldn't send ping message to %s:%s",
scheduler_ip_addr, self.scheduler_port)
finally:
sock.close()
while True:
msg, addr = yield self.udp_sock.recvfrom(1024)
# TODO: process each message as separate Coro, so
# exceptions are contained?
if msg.startswith('PING:'):
if self.cpus != self.avail_cpus:
logger.debug('Busy (%s/%s); ignoring ping message from %s',
self.cpus, self.avail_cpus, addr[0])
continue
try:
info = unserialize(msg[len('PING:'):])
socket.inet_aton(info['scheduler_ip_addr'])
assert isinstance(info['scheduler_port'], int)
assert info['version'] == _dispy_version
addr = (info['scheduler_ip_addr'], info['scheduler_port'])
except:
# raise
logger.debug('Ignoring ping message from %s (%s)', addr[0], addr[1])
continue
yield self.udp_sock.sendto(pong_msg, addr)
elif msg.startswith('PULSE:'):
try:
info = unserialize(msg[len('PULSE:'):])
assert info['ip_addr'] == self.scheduler_ip_addr
yield self.lock.acquire()
for compute in self.computations.itervalues():
compute.last_pulse = time.time()
yield self.lock.release()
except:
logger.warning('Ignoring PULSE from %s', addr[0])
elif msg.startswith('SERVERPORT:'):
try:
req = unserialize(msg[len('SERVERPORT:'):])
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
reply = {'ip_addr':self.address[0], 'port':self.address[1],
'sign':self.signature, 'version':_dispy_version}
sock = AsynCoroSocket(sock, blocking=False)
sock.settimeout(1)
yield sock.sendto(serialize(reply), (req['ip_addr'], req['port']))
sock.close()
except:
logger.debug(traceback.format_exc())
# pass
else:
logger.warning('Ignoring ping message from %s', addr[0])