def wait_async_file(self, id, eof=None, bytes=None):
the_fetch = None
for fetch in self.ongoing_fetches:
if fetch.ref.id == id:
the_fetch = fetch
break
if the_fetch is None:
ciel.log(
"Failed to wait for async-fetch %s: not an active transfer" %
id, "EXEC", logging.WARNING)
return {"success": False}
if eof is not None:
ciel.log("Waiting for fetch %s to complete" % id, "EXEC",
logging.DEBUG)
the_fetch.wait_eof()
else:
ciel.log(
"Waiting for fetch %s length to exceed %d bytes" % (id, bytes),
"EXEC", logging.DEBUG)
the_fetch.wait_bytes(bytes)
if the_fetch.done and not the_fetch.success:
ciel.log("Wait %s complete: transfer has failed" % id, "EXEC",
logging.WARNING)
return {"success": False}
else:
ret = {
"size": int(the_fetch.bytes),
"done": the_fetch.done,
"success": True
}
ciel.log(
"Wait %s complete: new length=%d, EOF=%s" %
(id, ret["size"], ret["done"]), "EXEC", logging.DEBUG)
return ret
def copy_loop(self):
try:
self.fetch_ip.set_filename(self.write_filename, True)
with open(self.read_filename, "r") as input_fp:
with open(self.write_filename, "w") as output_fp:
while True:
while True:
buf = input_fp.read(4096)
output_fp.write(buf)
self.bytes_copied += len(buf)
with self.lock:
if self.success is False or (self.bytes_copied == self.bytes_available and self.fetch_done):
self.stream_done = True
self.condvar.notify_all()
ciel.log("FIFO-push for %s complete (success: %s)" % (self.ref, self.success), "EXEC", logging.INFO)
return
if len(buf) < 4096:
# EOF, for now.
break
with self.lock:
self.next_threshold = self.bytes_copied + self.fetch_ip.chunk_size
while self.bytes_available < self.next_threshold and not self.fetch_done:
self.condvar.wait()
except Exception as e:
ciel.log("Push thread for %s died with exception %s" % (self.ref, e), "EXEC", logging.WARNING)
with self.lock:
self.stream_done = True
self.condvar.notify_all()
def _backoff_request(self, url, method, payload=None, num_attempts=1, initial_wait=0, need_result=True, callback=None):
initial_wait = 5
for _ in range(0, num_attempts):
if self.stop_event.is_set():
break
try:
try:
if method == "POST":
if need_result or num_attempts > 1:
content = post_string(url, payload)
else:
if callback is None:
callback = self.master_post_result_callback
post_string_noreturn(url, payload, result_callback=callback)
return
elif method == "GET":
content = get_string(url)
else:
raise Exception("Invalid method %s" % method)
return 200, content
except Exception as e:
ciel.log("Backoff-request failed with exception %s; re-raising MasterNotResponding" % e, "MASTER_PROXY", logging.ERROR)
raise MasterNotRespondingException()
except:
ciel.log.error("Error contacting master", "MSTRPRXY", logging.WARN, True)
self.stop_event.wait(initial_wait)
initial_wait += initial_wait * random.uniform(0.5, 1.5)
ciel.log.error("Given up trying to contact master", "MSTRPRXY", logging.ERROR, True)
if self.stop_event.is_set():
raise WorkerShutdownException()
else:
raise MasterNotRespondingException()
def thread_main(self):
while True:
# While not connected, attempt to register as a backup master.
while self.is_running:
try:
maybe_terminator = self.queue.get(block=True)
if not self.is_running or maybe_terminator is THREAD_TERMINATOR:
return
except Empty:
pass
log_entry = maybe_terminator
try:
if log_entry[0] == 'U':
self.standby_urls.add(log_entry[1])
elif log_entry[0] == 'P':
self.do_publish_refs(log_entry[1], log_entry[2])
elif log_entry[0] == 'W':
self.do_add_worker(log_entry[1])
elif log_entry[0] == 'J':
self.do_add_job(log_entry[1], log_entry[2])
elif log_entry[0] == 'D':
self.do_add_data(log_entry[1], log_entry[2])
else:
raise
except:
ciel.log('Error passing log to backup master.',
'BACKUP_SENDER', logging.WARN, True)
def sync_retrieve_refs(refs, task_record, accept_string=False):
ctxs = []
for ref in refs:
sync_transfer = SynchronousTransfer(ref, task_record)
ciel.log("Synchronous fetch ref %s" % ref.id, "BLOCKSTORE", logging.DEBUG)
if accept_string:
kwargs = {"string_callback": sync_transfer.return_string}
else:
kwargs = {}
fetch_ref_async(
ref,
sync_transfer.result,
sync_transfer.reset,
sync_transfer.start_filename,
task_record=task_record,
**kwargs
)
ctxs.append(sync_transfer)
for ctx in ctxs:
ctx.wait()
failed_transfers = filter(lambda x: not x.success, ctxs)
if len(failed_transfers) > 0:
raise MissingInputException(
dict([(ctx.ref.id, SW2_TombstoneReference(ctx.ref.id, ctx.ref.location_hints)) for ctx in failed_transfers])
)
return ctxs
def backoff_request(self,
url,
method,
payload=None,
need_result=True,
callback=None):
if self.stop_event.is_set():
return
try:
if method == "POST":
if need_result:
content = post_string(url, payload)
else:
if callback is None:
callback = self.master_post_result_callback
post_string_noreturn(url,
payload,
result_callback=callback)
return
elif method == "GET":
content = get_string(url)
else:
raise Exception("Invalid method %s" % method)
return 200, content
except:
ciel.log("Error attempting to contact master, aborting",
"MSTRPRXY", logging.WARNING, True)
raise
def task_runnable(self, task):
ciel.log('Task %s became runnable!' % task.task_id, 'LTG', logging.DEBUG)
if self.execution_features.can_run(task.handler):
if task.task_id in self.root_task_ids:
ciel.log('Putting task %s in the runnableQ because it is a root' % task.task_id, 'LTG', logging.DEBUG)
try:
self.runnable_queues[task.scheduling_class].put(task)
except KeyError:
try:
self.runnable_queues['*'].put(task)
except KeyError:
ciel.log('Scheduling class %s not supported on this worker (for task %s)' % (task.scheduling_class, task.task_id), 'LTG', logging.ERROR)
raise
task.taskset.inc_runnable_count()
else:
try:
is_small_task = task.worker_private['hint'] == 'small_task'
if is_small_task:
ciel.log('Putting task %s in the runnableQ because it is small' % task.task_id, 'LTG', logging.DEBUG)
try:
self.runnable_queues[task.scheduling_class].put(task)
except KeyError:
try:
self.runnable_queues['*'].put(task)
except KeyError:
ciel.log('Scheduling class %s not supported on this worker (for task %s)' % (task.scheduling_class, task.task_id), 'LTG', logging.ERROR)
raise
self.taskset.inc_runnable_count()
except KeyError:
pass
except AttributeError:
pass
def get_random_worker_with_capacity_weight(self, scheduling_class):
with self._lock:
try:
candidates = self.scheduling_class_capacities[scheduling_class]
total_capacity = self.scheduling_class_total_capacities[
scheduling_class]
except KeyError:
scheduling_class = '*'
candidates = self.scheduling_class_capacities['*']
total_capacity = self.scheduling_class_total_capacities['*']
selected_slot = random.randrange(total_capacity)
curr_slot = 0
i = 0
for worker, capacity in candidates:
curr_slot += capacity
if curr_slot > selected_slot:
return worker
ciel.log(
'Ran out of workers in capacity-weighted selection class=%s selected=%d total=%d'
% (scheduling_class, selected_slot, total_capacity),
'WORKER_POOL', logging.ERROR)
def prepare_task_descriptor_for_execute(cls, task_descriptor, task_record, block_store):
# Convert task_private from a reference to an object in here.
try:
task_descriptor["task_private"] = retrieve_object_for_ref(task_descriptor["task_private"], BaseExecutor.TASK_PRIVATE_ENCODING, task_record)
except:
ciel.log('Error retrieving task_private reference from task', 'BASE_EXECUTOR', logging.WARN, True)
raise
def _advertisment(self, bytes=None, done=None, absent=None, failed=None):
if self.cancelled:
return
if done or absent or failed:
self.subscribed_to_remote_adverts = False
if absent is True or failed is True:
if absent is True:
ciel.log(
"Stream-fetch %s: advertisment subscription reported file absent"
% self.ref.id, "CURL_FETCH", logging.WARNING)
else:
ciel.log(
"Stream-fetch %s: advertisment reported remote production failure"
% self.ref.id, "CURL_FETCH", logging.WARNING)
self.remote_failed = True
if self.current_data_fetch is None:
self.complete(False)
else:
ciel.log(
"Stream-fetch %s: got advertisment: bytes %d done %s" %
(self.ref.id, bytes, done), "CURL_FETCH", logging.DEBUG)
if self.latest_advertisment <= bytes:
self.latest_advertisment = bytes
else:
ciel.log(
"Stream-fetch %s: intriguing anomaly: advert for %d bytes; currently have %d. Probable reordering in the network"
% (self.ref.id, bytes, self.latest_advertisment),
"CURL_FETCH", logging.WARNING)
if self.remote_done and not done:
ciel.log(
"Stream-fetch %s: intriguing anomaly: advert said not-done, but we are. Probable reordering in the network"
% self.ref.id, "CURL_FETCH", logging.WARNING)
self.remote_done = self.remote_done or done
if self.current_data_fetch is None:
self.check_complete()
def cancel(self):
ciel.log("Stream-fetch %s: cancelling" % self.ref.id, "CURL_FETCH",
logging.DEBUG)
self.cancelled = True
if self.current_data_fetch is not None:
self.current_data_fetch.cancel()
self.complete(False)
def allinone_main(options, args):
ciel.log = CielLogger()
script_filename = args[0]
run_id = args[1] if len(args) > 1 else 'allinone'
base_dir = tempfile.mkdtemp(prefix=os.getenv('TEMP', default='/tmp/sw-files-'))
ciel.log('Writing block store files to %s' % base_dir, 'ALLINONE', logging.INFO)
if options.blockstore is not None:
base_dir = options.blockstore
else:
base_dir = tempfile.mkdtemp(prefix=os.getenv('TEMP', default='/tmp/sw-files-'))
options.blockstore = base_dir
block_store = BlockStore(ciel.engine, 'localhost', 8000, base_dir, True)
initial_task_descriptor, cont_ref = build_initial_task_descriptor(script_filename, block_store, 'root', 'root_cont', 'root_output')
initial_task_object = build_taskpool_task_from_descriptor(initial_task_descriptor, None)
task_runner = TaskRunner(initial_task_object, cont_ref, block_store, options)
try:
print run_id, 'SUBMITTED_JOB', now_as_timestamp()
result = task_runner.run()
print run_id, 'GOT_RESULT', now_as_timestamp()
print block_store.retrieve_object_for_ref(result, 'json')
except:
pass
def open_output(self,
index,
may_pipe=False,
may_stream=False,
make_local_sweetheart=False,
can_smart_subscribe=False,
fd_socket_name=None):
if may_pipe and not may_stream:
raise Exception(
"Insane parameters: may_stream=False and may_pipe=True may well lead to deadlock"
)
if index in self.ongoing_outputs:
raise Exception("Tried to open output %d which was already open" %
index)
if not sendmsg_enabled:
ciel.log("Not using FDs directly: module 'sendmsg' not available",
"EXEC", logging.DEBUG)
fd_socket_name = None
output_name = self.expected_outputs[index]
can_accept_fd = (fd_socket_name is not None)
output_ctx = OngoingOutput(output_name, index, can_smart_subscribe,
may_pipe, make_local_sweetheart,
can_accept_fd, self)
self.ongoing_outputs[index] = output_ctx
self.context_manager.add_context(output_ctx)
if may_stream:
ref = output_ctx.get_stream_ref()
self.task_record.prepublish_refs([ref])
x, is_fd = output_ctx.get_filename_or_fd()
if is_fd:
return ({"sending_fd": True}, x)
else:
return ({"sending_fd": False, "filename": x}, None)
def cancel(self):
ciel.log("Fetch %s: cancelling" % self.ref.id, "CURL_FETCH", logging.INFO)
self.cancelled = True
if self.curl_fetch is not None:
self.curl_fetch.cancel()
self.fp.close()
self.callbacks.result(False)
def thread_main(self):
try:
with self.lock:
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.should_close = True
ciel.log("Connecting %s:%s" % (self.otherend_hostname, self.ref.socket_port), "TCP_FETCH", logging.DEBUG)
subscribe_remote_output_nopost(self.ref.id, self)
self.sock.connect((self.otherend_hostname, self.ref.socket_port))
self.sock.sendall("%s %s %d\n" % (self.ref.id, get_own_netloc(), self.chunk_size))
ciel.log("%s:%s connected: requesting %s (chunk size %d)" % (self.otherend_hostname, self.ref.socket_port, self.ref.id, self.chunk_size), "TCP_FETCH", logging.DEBUG)
fp = self.sock.makefile("r", bufsize=0)
response = fp.readline().strip()
fp.close()
with self.lock:
self.should_close = False
if response.find("GO") != -1:
ciel.log("TCP-fetch %s: transfer started" % self.ref.id, "TCP_FETCH", logging.DEBUG)
new_fd = os.dup(self.sock.fileno())
self.sock.close()
self.fetch_ctx.set_fd(new_fd, True)
else:
ciel.log("TCP-fetch %s: request failed: other end said '%s'" % (self.ref.id, response), "TCP_FETCH", logging.WARNING)
unsubscribe_remote_output_nopost(self.ref.id)
self.done = True
self.sock.close()
self.fetch_ctx.result(False)
except Exception as e:
unsubscribe_remote_output_nopost(self.ref.id)
ciel.log("TCP-fetch %s: failed due to exception %s" % (self.ref.id, repr(e)), "TCP_FETCH", logging.ERROR)
with self.lock:
if self.should_close:
self.sock.close()
self.done = True
self.should_close = False
self.fetch_ctx.result(False)
def receive_stream_advertisment(id, **args):
try:
with module_lock:
remote_stat_subscriptions[id].advertisment(**args)
except KeyError:
ciel.log("Got advertisment for %s which is not an ongoing stream" % id,
"REMOTE_STAT", logging.WARNING)
def create_job_for_task(self, task_descriptor, job_options, job_id=None):
"""
Convert a task descriptor into a job. Allocates a new job id,
creates a Job, and entrains it to the JobPool.
This is always called with job_id = None; not sure why there's
even an argument for it.
"""
with self._lock:
if job_id is None:
job_id = self.allocate_job_id()
task_id = 'root:%s' % (job_id, )
task_descriptor['task_id'] = task_id
# TODO: Here is where we will set up the job journal, etc.
job_dir = self.make_job_directory(job_id)
try:
expected_outputs = task_descriptor['expected_outputs']
except KeyError:
expected_outputs = ['%s:job_output' % job_id]
task_descriptor['expected_outputs'] = expected_outputs
task = build_taskpool_task_from_descriptor(task_descriptor, None)
job = Job(job_id, task, job_dir, JOB_CREATED, self, job_options)
task.job = job
self.add_job(job)
ciel.log('Added job: %s' % job.id, 'JOB_POOL', logging.INFO)
return job
def sync_retrieve_refs(refs, task_record, accept_string=False):
ctxs = []
for ref in refs:
sync_transfer = SynchronousTransfer(ref, task_record)
ciel.log("Synchronous fetch ref %s" % ref.id, "BLOCKSTORE",
logging.DEBUG)
if accept_string:
kwargs = {"string_callback": sync_transfer.return_string}
else:
kwargs = {}
fetch_ref_async(ref,
sync_transfer.result,
sync_transfer.reset,
sync_transfer.start_filename,
task_record=task_record,
**kwargs)
ctxs.append(sync_transfer)
for ctx in ctxs:
ctx.wait()
failed_transfers = filter(lambda x: not x.success, ctxs)
if len(failed_transfers) > 0:
raise MissingInputException(
dict([(ctx.ref.id,
SW2_TombstoneReference(ctx.ref.id, ctx.ref.location_hints))
for ctx in failed_transfers]))
return ctxs
def task_finished(self, task, time):
self.running_tasks -= 1
self.task_cost = EWMA_ALPHA * time + (1 - EWMA_ALPHA) * self.task_cost
ciel.log(
'Job %s finished a task (now running %d, task cost now %f)' %
(self.id, self.running_tasks, self.task_cost), 'JOB',
logging.DEBUG)
def complete(self, success):
if not self.local_done:
self.local_done = True
ciel.log("Stream-fetch %s: complete" % self.ref.id, "CURL_FETCH", logging.INFO)
self.unsubscribe_remote_output()
self.fp.close()
self.callbacks.result(success)
def garbage_thread(self):
while True:
now = datetime.now()
with self.lock:
for executor in self.soft_cache_executors:
dead_recs = []
for proc_rec in executor.process_cache:
time_since_last_use = now - proc_rec.last_used_time
if time_since_last_use.seconds > 30:
proc_rec.kill()
dead_recs.append(proc_rec)
for dead_rec in dead_recs:
executor.process_cache.remove(dead_rec)
self.gc_thread_stop.wait(60)
if self.gc_thread_stop.isSet():
with self.lock:
for executor in self.soft_cache_executors:
for proc_rec in executor.process_cache:
try:
proc_rec.kill()
except Exception as e:
ciel.log(
"Failed to shut a process down (%s)" %
repr(e), "PROCESSPOOL", logging.WARNING)
ciel.log("Process pool garbage collector: terminating",
"PROCESSPOOL", logging.DEBUG)
return
def create_job_for_task(self, task_descriptor, job_options, job_id=None):
with self._lock:
if job_id is None:
job_id = self.allocate_job_id()
task_id = 'root:%s' % (job_id, )
task_descriptor['task_id'] = task_id
# TODO: Here is where we will set up the job journal, etc.
job_dir = self.make_job_directory(job_id)
try:
expected_outputs = task_descriptor['expected_outputs']
except KeyError:
expected_outputs = ['%s:job_output' % job_id]
task_descriptor['expected_outputs'] = expected_outputs
task = build_taskpool_task_from_descriptor(task_descriptor, None)
job = Job(job_id, task, job_dir, JOB_CREATED, self, job_options)
task.job = job
self.add_job(job)
ciel.log('Added job: %s' % job.id, 'JOB_POOL', logging.INFO)
return job
def run(self):
self.task_graph.publish(self.initial_cont_ref, None)
self.task_graph.spawn(self.initial_task, None)
self.is_running = True
self.workers = []
ciel.log('Starting %d worker threads.' % self.num_workers, 'TASKRUNNER', logging.INFO)
for _ in range(self.num_workers):
try:
self.workers.append(multiprocessing.Process(target=worker_process_main, args=(self.options.blockstore, self.task_queue, self.response_queue)))
except:
print sys.exc_info()
response_handler_thread = threading.Thread(target=self.response_handler_thread_main)
response_handler_thread.start()
ciel.log('Starting %d worker threads.' % self.num_workers, 'TASKRUNNER', logging.INFO)
for worker in self.workers:
worker.start()
result = self.job_output.join()
self.is_running = False
for worker in self.workers:
self.task_queue.put(THREAD_TERMINATOR)
self.response_queue.put((ACTION_STOP, None))
response_handler_thread.join()
for worker in self.workers:
worker.join()
return result
def notify_worker_failed(self, worker):
with self._lock:
try:
worker_state = self.workers[worker]
del self.workers[worker]
ciel.log(
'Reassigning tasks from failed worker %s for job %s' %
(worker.id, self.id), 'JOB', logging.WARNING)
for assigned in worker_state.assigned_tasks.values():
for failed_task in assigned:
failed_task.remove_worker(worker)
self.investigate_task_failure(
failed_task, ('WORKER_FAILED', None, {}))
for scheduling_class in worker_state.queues:
while True:
queued_task = worker_state.pop_task_from_queue(
scheduling_class)
if queued_task is None:
break
self.runnable_queue.put(queued_task)
#self.investigate_task_failure(failed_task, ('WORKER_FAILED', None, {}))
#self.runnable_queue.put(queued_task)
self.schedule()
except KeyError:
ciel.log('Weird keyerror coming out of notify_worker_failed',
'JOB', logging.WARNING, True)
pass
def rollback(self):
if not self.closed:
ciel.log("Rollback output %s" % id, 'BLOCKSTORE', logging.WARNING)
del streaming_producers[self.refid]
with self.lock:
self.closed = True
self.succeeded = False
if self.fifo_name is not None:
try:
# Dismiss anyone waiting on this pipe
fd = os.open(self.fifo_name, os.O_NONBLOCK | os.O_WRONLY)
os.close(fd)
except:
pass
try:
os.remove(self.fifo_name)
except:
pass
if self.file_watch is not None:
self.file_watch.cancel()
if self.cat_proc is not None:
try:
self.cat_proc.kill()
except:
pass
for subscriber in self.subscriptions:
subscriber.result(False)
def allinone_main(options, args):
ciel.log = CielLogger()
script_filename = args[0]
run_id = args[1] if len(args) > 1 else "allinone"
base_dir = tempfile.mkdtemp(prefix=os.getenv("TEMP", default="/tmp/sw-files-"))
ciel.log("Writing block store files to %s" % base_dir, "ALLINONE", logging.INFO)
if options.blockstore is not None:
base_dir = options.blockstore
else:
base_dir = tempfile.mkdtemp(prefix=os.getenv("TEMP", default="/tmp/sw-files-"))
options.blockstore = base_dir
block_store = BlockStore(ciel.engine, "localhost", 8000, base_dir, True)
initial_task_descriptor, cont_ref = build_initial_task_descriptor(
script_filename, block_store, "root", "root_cont", "root_output"
)
initial_task_object = build_taskpool_task_from_descriptor(initial_task_descriptor, None)
task_runner = TaskRunner(initial_task_object, cont_ref, block_store, options)
try:
print run_id, "SUBMITTED_JOB", now_as_timestamp()
result = task_runner.run()
print run_id, "GOT_RESULT", now_as_timestamp()
print block_store.retrieve_object_for_ref(result, "json", None)
except:
pass
def get_random_worker_with_capacity_weight(self, scheduling_class):
"""
Select a worker at random weighted according to the worker's
capacity within a given scheduling class, without reference to
its current load. Returns None if the total capacity of the
class is 0. If the scheduling class is completely unknown
then we use '*' instead.
"""
with self._lock:
try:
candidates = self.scheduling_class_capacities[scheduling_class]
total_capacity = self.scheduling_class_total_capacities[scheduling_class]
except KeyError:
scheduling_class = '*'
candidates = self.scheduling_class_capacities['*']
total_capacity = self.scheduling_class_total_capacities['*']
if total_capacity == 0:
return None
selected_slot = random.randrange(total_capacity)
curr_slot = 0
i = 0
for worker, capacity in candidates:
curr_slot += capacity
if curr_slot > selected_slot:
return worker
# XXX sos22 this is actually really quite bad; I think it
# wants to be an abort().
ciel.log('Ran out of workers in capacity-weighted selection class=%s selected=%d total=%d' % (scheduling_class, selected_slot, total_capacity), 'WORKER_POOL', logging.ERROR)
def notify_completed(self):
"""Called by LocalJobOutput.notify_ref_table_updated() when the taskset is complete."""
ciel.log.error('Taskset complete', 'TASKEXEC', logging.DEBUG)
# Release this task set, which may allow the JobManager to delete the job.
self.job_manager.taskset_completed(self)
if not self.aborted:
# Send a task report back to the master.
report_data = []
for tr in self.task_records:
if tr.success:
report_data.append(
(tr.task_descriptor['task_id'], tr.success,
(tr.spawned_tasks, tr.published_refs,
tr.get_profiling())))
else:
ciel.log(
'Appending failure to report for task %s' %
tr.task_descriptor['task_id'], 'TASKEXEC',
logging.DEBUG)
report_data.append(
(tr.task_descriptor['task_id'], tr.success,
(tr.failure_reason, tr.failure_details,
tr.failure_bindings)))
ciel.stopwatch.stop("worker_task")
self.master_proxy.report_tasks(self.job.id,
self.initial_td['task_id'],
report_data)
def thread_main(self):
while True:
# While not connected, attempt to register as a backup master.
while self.is_running:
try:
maybe_terminator = self.queue.get(block=True)
if not self.is_running or maybe_terminator is THREAD_TERMINATOR:
return
except Empty:
pass
log_entry = maybe_terminator
try:
if log_entry[0] == 'U':
self.standby_urls.add(log_entry[1])
elif log_entry[0] == 'P':
self.do_publish_refs(log_entry[1], log_entry[2])
elif log_entry[0] == 'W':
self.do_add_worker(log_entry[1])
elif log_entry[0] == 'J':
self.do_add_job(log_entry[1], log_entry[2])
elif log_entry[0] == 'D':
self.do_add_data(log_entry[1], log_entry[2])
else:
raise
except:
ciel.log('Error passing log to backup master.', 'BACKUP_SENDER', logging.WARN, True)
def create_job_for_task(self, task_descriptor, job_options, job_id=None):
with self._lock:
if job_id is None:
job_id = self.allocate_job_id()
task_id = 'root:%s' % (job_id, )
task_descriptor['task_id'] = task_id
# TODO: Here is where we will set up the job journal, etc.
job_dir = self.make_job_directory(job_id)
try:
expected_outputs = task_descriptor['expected_outputs']
except KeyError:
expected_outputs = ['%s:job_output' % job_id]
task_descriptor['expected_outputs'] = expected_outputs
task = build_taskpool_task_from_descriptor(task_descriptor, None)
job = Job(job_id, task, job_dir, JOB_CREATED, self, job_options)
task.job = job
self.add_job(job)
ciel.log('Added job: %s' % job.id, 'JOB_POOL', logging.INFO)
return job
def unsubscribe_output(otherend_netloc, id):
with module_lock:
try:
remote_stream_subscribers[(id, otherend_netloc)].cancel()
ciel.log("%s unsubscribed from %s" % (otherend_netloc, id), "BLOCKSTORE", logging.DEBUG)
except KeyError:
ciel.log("Ignored unsubscribe request for unknown block %s" % id, "BLOCKSTORE", logging.WARNING)
def rollback(self):
if not self.closed:
ciel.log("Rollback output %s" % id, 'BLOCKSTORE', logging.WARNING)
del streaming_producers[self.refid]
with self.lock:
self.closed = True
self.succeeded = False
if self.fifo_name is not None:
try:
# Dismiss anyone waiting on this pipe
fd = os.open(self.fifo_name, os.O_NONBLOCK | os.O_WRONLY)
os.close(fd)
except:
pass
try:
os.remove(self.fifo_name)
except:
pass
if self.file_watch is not None:
self.file_watch.cancel()
if self.cat_proc is not None:
try:
self.cat_proc.kill()
except:
pass
for subscriber in self.subscriptions:
subscriber.result(False)
def notify_completed(self):
"""Called by LocalJobOutput.notify_ref_table_updated() when the taskset is complete."""
ciel.log.error("Taskset complete", "TASKEXEC", logging.INFO)
if not self.aborted:
# Send a task report back to the master.
report_data = []
for tr in self.task_records:
if tr.success:
report_data.append(
(
tr.task_descriptor["task_id"],
tr.success,
(tr.spawned_tasks, tr.published_refs, tr.get_profiling()),
)
)
else:
ciel.log(
"Appending failure to report for task %s" % tr.task_descriptor["task_id"],
"TASKEXEC",
logging.INFO,
)
report_data.append(
(
tr.task_descriptor["task_id"],
tr.success,
(tr.failure_reason, tr.failure_details, tr.failure_bindings),
)
)
self.master_proxy.report_tasks(self.job.id, self.initial_td["task_id"], report_data)
# Release this task set, which may allow the JobManager to delete the job.
self.job_manager.taskset_completed(self)
def subscribe_result(refid, success, url):
try:
with module_lock:
remote_stat_subscriptions[refid].subscribe_result(success, url)
except KeyError:
ciel.log(
"Subscribe-result for %s ignored as no longer subscribed" % url,
"REMOTE_STAT", logging.WARNING)
def __exit__(self, exnt, exnv, exntb):
if not self.closed:
if exnt is None:
self.close()
else:
ciel.log("FileOutputContext %s destroyed due to exception %s: rolling back" % (self.refid, repr(exnv)), "BLOCKSTORE", logging.WARNING)
self.rollback()
return False
def __exit__(self, exnt, exnv, exnbt):
if exnt is not None:
ciel.log("Context manager for %s exiting with exception %s" % (self.description, repr(exnv)), "EXEC", logging.WARNING)
else:
ciel.log("Context manager for %s exiting cleanly" % self.description, "EXEC", logging.DEBUG)
for ctx in self.active_contexts:
ctx.__exit__(exnt, exnv, exnbt)
return False
def __init__(self, bus, name, queue_manager, num_cores=48):
self.bus = bus
self.name = name
self.queue_manager = queue_manager
self.num_cores = num_cores
self.is_running = False
ciel.log("SCCCorePool initializing", "SCC", logging.INFO)
def complete(self, success):
if not self.local_done:
self.local_done = True
ciel.log("Stream-fetch %s: complete" % self.ref.id, "CURL_FETCH",
logging.DEBUG)
self.unsubscribe_remote_output()
self.fp.close()
self.callbacks.result(success)
def cleanup(self):
try:
if self.from_process_fifo is not None:
os.close(self.from_process_fifo)
if self.to_process_fifo is not None:
os.close(self.to_process_fifo)
except:
ciel.log('Error cleaning up process %s, ignoring' % self.id, 'PROCESS', logging.WARN)
def task_finished(self, task, time):
self.running_tasks -= 1
self.task_cost = EWMA_ALPHA * time + (1 - EWMA_ALPHA) * self.task_cost
ciel.log(
"Job %s finished a task (now running %d, task cost now %f)" % (self.id, self.running_tasks, self.task_cost),
"JOB",
logging.INFO,
)
def publish_fetched_ref(self, fetch):
completed_ref = fetch.get_completed_ref()
if completed_ref is None:
ciel.log("Cancelling async fetch %s (chunk %d)" % (fetch.ref.id, fetch.chunk_size), "EXEC", logging.DEBUG)
else:
if fetch.make_sweetheart:
completed_ref = SW2_SweetheartReference.from_concrete(completed_ref, get_own_netloc())
self.task_record.publish_ref(completed_ref)
def consider_next_fetch(self):
if self.remote_done or self.latest_advertisment - self.previous_fetches_bytes_downloaded > self.current_chunk_size:
self.start_next_fetch()
else:
ciel.log("Stream-fetch %s: paused (remote has %d, I have %d)" %
(self.ref.id, self.latest_advertisment, self.previous_fetches_bytes_downloaded),
"CURL_FETCH", logging.INFO)
self.current_data_fetch = None
def _start(self):
if self.ref.id in active_http_transfers:
ciel.log("Joining existing fetch for ref %s" % self.ref, "BLOCKSTORE", logging.INFO)
else:
self.start_http_fetch()
active_http_transfers[self.ref.id].add_listener(self.fetch_client)
self.fetch = active_http_transfers[self.ref.id]
self.fetch_client.set_filename(self.fetch.bs_ctx.filename, False)
def subscribe_result(self, success, _):
if not success:
ciel.log("Stream-fetch %s: failed to subscribe to remote adverts. Abandoning stream."
% self.ref.id, "CURL_FETCH", logging.INFO)
self.subscribed_to_remote_adverts = False
self.remote_failed = True
if self.current_data_fetch is None:
self.complete(False)
def __init__(self, port):
self.aux_port = port
ciel.log("Listening for auxiliary connections on port %d" % port, "TCP_FETCH", logging.DEBUG)
self.aux_listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.aux_listen_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.aux_listen_socket.bind(("0.0.0.0", port))
self.aux_listen_socket.listen(5)
self.aux_listen_socket.setblocking(False)
def cancel(self):
ciel.log("Fetch %s: cancelling" % self.ref.id, "CURL_FETCH",
logging.DEBUG)
self.cancelled = True
if self.curl_fetch is not None:
self.curl_fetch.cancel()
self.fp.close()
self.callbacks.result(False)
def cleanup(self):
try:
if self.from_process_fifo is not None:
self.from_process_fifo.close()
if self.to_process_fifo is not None:
self.to_process_fifo.close()
shutil.rmtree(self.fifos_dir)
except:
ciel.log('Error cleaning up process %s, ignoring' % self.id, 'PROCESS', logging.WARN, True)
def soft_cache_process(self, proc_rec, exec_cls, soft_cache_keys):
with self.lock:
ciel.log("Caching process %s" % proc_rec.id, "PROCESSPOOL", logging.DEBUG)
exec_cls.process_cache.add(proc_rec)
proc_rec.is_free = True
proc_rec.last_used_time = datetime.now()
proc_rec.soft_cache_refs = set()
for (refids, tag) in soft_cache_keys:
proc_rec.soft_cache_refs.update(refids)
def set_state(self, state):
self.record_event(JOB_STATE_NAMES[state])
self.state = state
evt_time = self.history[-1][0]
ciel.log(
'%s %s @ %f' %
(self.id, JOB_STATE_NAMES[self.state],
time.mktime(evt_time.timetuple()) + evt_time.microsecond / 1e6),
'JOB', logging.INFO)
def task_runnable(self, task):
if self.job.state == JOB_ACTIVE:
task.set_state(TASK_QUEUED)
self.scheduler_queue.put(task)
else:
ciel.log(
'Task %s became runnable while job %s not active (%s): ignoring'
% (task.task_id, self.job.id, JOB_STATE_NAMES[self.job.state]),
'JOBTASKGRAPH', logging.WARN)
def cleanup(self):
try:
if self.from_process_fifo is not None:
os.close(self.from_process_fifo)
if self.to_process_fifo is not None:
os.close(self.to_process_fifo)
except:
ciel.log('Error cleaning up process %s, ignoring' % self.id,
'PROCESS', logging.WARN)
def subscribe_result(self, success, _):
if not success:
ciel.log(
"Stream-fetch %s: failed to subscribe to remote adverts. Abandoning stream."
% self.ref.id, "CURL_FETCH", logging.DEBUG)
self.subscribed_to_remote_adverts = False
self.remote_failed = True
if self.current_data_fetch is None:
self.complete(False)
def _start(self):
if self.ref.id in active_http_transfers:
ciel.log("Joining existing fetch for ref %s" % self.ref,
"BLOCKSTORE", logging.DEBUG)
else:
self.start_http_fetch()
active_http_transfers[self.ref.id].add_listener(self.fetch_client)
self.fetch = active_http_transfers[self.ref.id]
self.fetch_client.set_filename(self.fetch.bs_ctx.filename, False)
def unsubscribe_output(otherend_netloc, id):
with module_lock:
try:
remote_stream_subscribers[(id, otherend_netloc)].cancel()
ciel.log("%s unsubscribed from %s" % (otherend_netloc, id),
"BLOCKSTORE", logging.DEBUG)
except KeyError:
ciel.log("Ignored unsubscribe request for unknown block %s" % id,
"BLOCKSTORE", logging.WARNING)
def soft_cache_process(self, proc_rec, exec_cls, soft_cache_keys):
with self.lock:
ciel.log("Caching process %s" % proc_rec.id, "PROCESSPOOL",
logging.DEBUG)
exec_cls.process_cache.add(proc_rec)
proc_rec.is_free = True
proc_rec.last_used_time = datetime.now()
proc_rec.soft_cache_refs = set()
for (refids, tag) in soft_cache_keys:
proc_rec.soft_cache_refs.update(refids)
def __exit__(self, exnt, exnv, exntb):
if not self.closed:
if exnt is None:
self.close()
else:
ciel.log(
"FileOutputContext %s destroyed due to exception %s: rolling back"
% (self.refid, repr(exnv)), "BLOCKSTORE", logging.WARNING)
self.rollback()
return False
def cleanup(self):
try:
if self.from_process_fifo is not None:
self.from_process_fifo.close()
if self.to_process_fifo is not None:
self.to_process_fifo.close()
shutil.rmtree(self.fifos_dir)
except:
ciel.log('Error cleaning up process %s, ignoring' % self.id,
'PROCESS', logging.WARN, True)
def _check_completion(self):
if self.success is False:
ciel.log("Fetch for %s failed" % self.ref, "EXEC", logging.WARNING)
return False
elif self.success is True:
ciel.log("Fetch for %s completed; using file directly" % self.ref,
"EXEC", logging.DEBUG)
return True
else:
return False
