def invariant_check_prompt(self):
answer = msg.raw_input('Check Invariants? [Ny]')
if answer != '' and answer.lower() != 'n':
msg.interactive("Which one?")
msg.interactive(" 'o' - omega")
msg.interactive(" 'c' - connectivity")
msg.interactive(" 'lo' - loops")
msg.interactive(" 'li' - controller liveness")
answer = msg.raw_input("> ")
result = None
message = ""
if answer.lower() == 'o':
self._log_input_event(CheckInvariants(invariant_check=InvariantChecker.check_correspondence))
result = InvariantChecker.check_correspondence(self.simulation)
message = "Controllers with miscorrepondence: "
elif answer.lower() == 'c':
self._log_input_event(CheckInvariants(invariant_check=InvariantChecker.check_connectivity))
result = self.invariant_checker.check_connectivity(self.simulation)
message = "Disconnected host pairs: "
elif answer.lower() == 'lo':
self._log_input_event(CheckInvariants(invariant_check=InvariantChecker.check_loops))
result = self.invariant_checker.check_loops(self.simulation)
message = "Loops: "
elif answer.lower() == 'li':
self._log_input_event(CheckInvariants(invariant_check=InvariantChecker.check_liveness))
result = self.invariant_checker.check_loops(self.simulation)
message = "Crashed controllers: "
else:
log.warn("Unknown input...")
if result is None:
return
else:
msg.interactive("%s: %s" % (message, str(result)))
def dataplane_trace_prompt(self):
if self.simulation.dataplane_trace:
while True:
answer = msg.raw_input('Feed in next dataplane event? [Ny]')
if answer != '' and answer.lower() != 'n':
dp_event = self.simulation.dataplane_trace.inject_trace_event()
self._log_input_event(TrafficInjection(), dp_event=dp_event)
else:
break
def invariant_check_prompt(self):
answer = msg.raw_input('Check Invariants? [Ny]')
if answer != '' and answer.lower() != 'n':
msg.interactive("Which one?")
msg.interactive(" 'o' - omega")
msg.interactive(" 'c' - connectivity")
msg.interactive(" 'lo' - loops")
msg.interactive(" 'li' - controller liveness")
answer = msg.raw_input("> ")
result = None
message = ""
if answer.lower() == 'o':
self._log_input_event(
CheckInvariants(
invariant_check=InvariantChecker.check_correspondence))
result = InvariantChecker.check_correspondence(self.simulation)
message = "Controllers with miscorrepondence: "
elif answer.lower() == 'c':
self._log_input_event(
CheckInvariants(
invariant_check=InvariantChecker.check_connectivity))
result = self.invariant_checker.check_connectivity(
self.simulation)
message = "Disconnected host pairs: "
elif answer.lower() == 'lo':
self._log_input_event(
CheckInvariants(
invariant_check=InvariantChecker.check_loops))
result = self.invariant_checker.check_loops(self.simulation)
message = "Loops: "
elif answer.lower() == 'li':
self._log_input_event(
CheckInvariants(
invariant_check=InvariantChecker.check_liveness))
result = self.invariant_checker.check_loops(self.simulation)
message = "Crashed controllers: "
else:
log.warn("Unknown input...")
if result is None:
return
else:
msg.interactive("%s: %s" % (message, str(result)))
def dataplane_trace_prompt(self):
if self.simulation.dataplane_trace:
while True:
answer = msg.raw_input('Feed in next dataplane event? [Ny]')
if answer != '' and answer.lower() != 'n':
dp_event = self.simulation.dataplane_trace.inject_trace_event(
)
self._log_input_event(TrafficInjection(),
dp_event=dp_event)
else:
break
def input(prompt):
if self.default_command:
prompt = prompt + color.GRAY + "["+ self.default_command + "]" + color.WHITE + " >"
else:
prompt = prompt + "> "
x = msg.raw_input(prompt)
if x == "" and self.default_command:
x = self.default_command
parts = x.split(" ")
cmd_name = parts[0]
if cmd_name in self.commands:
x = parts[0]+"(" + ", ".join(map(lambda s: quote_parameter(s), parts[1:])) + ")"
return x
def loop(self):
try:
while True:
# TODO(cs): print out the state of the network at each timestep? Take a
# verbose flag..
time.sleep(0.05)
self.logical_time += 1
self.invariant_check_prompt()
self.dataplane_trace_prompt()
self.check_dataplane()
self.check_message_receipts()
answer = msg.raw_input('Continue to next round? [Yn]').strip()
if answer != '' and answer.lower() != 'y':
break
finally:
if self._input_logger is not None:
self._input_logger.close(self.simulation_cfg)
def loop(self):
try:
while True:
# TODO(cs): print out the state of the network at each timestep? Take a
# verbose flag..
time.sleep(0.05)
self.logical_time += 1
self.invariant_check_prompt()
self.dataplane_trace_prompt()
self.check_dataplane()
self.check_message_receipts()
answer = msg.raw_input('Continue to next round? [Yn]').strip()
if answer != '' and answer.lower() != 'y':
break
finally:
if self._input_logger is not None:
self._input_logger.close(self.simulation_cfg)
def check_dataplane(self):
''' Decide whether to delay, drop, or deliver packets '''
if type(self.simulation.patch_panel) == BufferedPatchPanel:
for dp_event in self.simulation.patch_panel.queued_dataplane_events:
answer = msg.raw_input('Allow [a], Drop [d], or Delay [e] dataplane packet %s? [Ade]' %
dp_event)
if ((answer == '' or answer.lower() == 'a') and
self.simulation.topology.ok_to_send(dp_event)):
self.simulation.patch_panel.permit_dp_event(dp_event)
self._log_input_event(DataplanePermit(dp_event.fingerprint))
elif answer.lower() == 'd':
self.simulation.patch_panel.drop_dp_event(dp_event)
self._log_input_event(DataplaneDrop(dp_event.fingerprint))
elif answer.lower() == 'e':
self.simulation.patch_panel.delay_dp_event(dp_event)
else:
log.warn("Unknown input...")
self.simulation.patch_panel.delay_dp_event(dp_event)
def check_dataplane(self):
''' Decide whether to delay, drop, or deliver packets '''
if type(self.simulation.patch_panel) == BufferedPatchPanel:
for dp_event in self.simulation.patch_panel.queued_dataplane_events:
answer = msg.raw_input(
'Allow [a], Drop [d], or Delay [e] dataplane packet %s? [Ade]'
% dp_event)
if ((answer == '' or answer.lower() == 'a')
and self.simulation.topology.ok_to_send(dp_event)):
self.simulation.patch_panel.permit_dp_event(dp_event)
self._log_input_event(DataplanePermit(
dp_event.fingerprint))
elif answer.lower() == 'd':
self.simulation.patch_panel.drop_dp_event(dp_event)
self._log_input_event(DataplaneDrop(dp_event.fingerprint))
elif answer.lower() == 'e':
self.simulation.patch_panel.delay_dp_event(dp_event)
else:
log.warn("Unknown input...")
self.simulation.patch_panel.delay_dp_event(dp_event)
def __init__(self,
simulation_cfg,
superlog_path_or_dag,
invariant_check_name=None,
transform_dag=None,
end_wait_seconds=0.5,
mcs_trace_path=None,
extra_log=None,
runtime_stats_path=None,
wait_on_deterministic_values=False,
no_violation_verification_runs=1,
optimized_filtering=False,
forker=LocalForker(),
replay_final_trace=True,
strict_assertion_checking=False,
delay_flow_mods=False,
**kwargs):
super(MCSFinder, self).__init__(simulation_cfg)
# number of subsequences delta debugging has examined so far, for
# distingushing runtime stats from different intermediate runs.
self.subsequence_id = 0
self.mcs_log_tracker = None
self.replay_log_tracker = None
self.mcs_trace_path = mcs_trace_path
self.sync_callback = None
self._log = logging.getLogger("mcs_finder")
if invariant_check_name is None:
raise ValueError("Must specify invariant check")
if invariant_check_name not in name_to_invariant_check:
raise ValueError(
'''Unknown invariant check %s.\n'''
'''Invariant check name must be defined in config.invariant_checks''',
invariant_check_name)
self.invariant_check = name_to_invariant_check[invariant_check_name]
if type(superlog_path_or_dag) == str:
self.superlog_path = superlog_path_or_dag
# The dag is codefied as a list, where each element has
# a list of its dependents
self.dag = EventDag(log_parser.parse_path(self.superlog_path))
else:
self.dag = superlog_path_or_dag
last_invariant_violation = self.dag.get_last_invariant_violation()
if last_invariant_violation is None:
raise ValueError("No invariant violation found in dag...")
violations = last_invariant_violation.violations
if len(violations) > 1:
self.bug_signature = None
while self.bug_signature is None:
msg.interactive(
"\n------------------------------------------\n")
msg.interactive(
"Multiple violations detected! Choose one for MCS Finding:"
)
for i, violation in enumerate(violations):
msg.interactive(" [%d] %s" % (i + 1, violation))
violation_index = msg.raw_input("> ")
if re.match("^\d+$", violation_index) is None or\
int(violation_index) < 1 or\
int(violation_index) > len(violations):
msg.fail("Must provide an integer between 1 and %d!" %
len(violations))
continue
self.bug_signature = violations[int(violation_index) - 1]
else:
self.bug_signature = violations[0]
msg.success(
"\nBug signature to match is %s. Proceeding with MCS finding!\n" %
self.bug_signature)
self.transform_dag = transform_dag
# A second log with just our MCS progress log messages
self._extra_log = extra_log
self.kwargs = kwargs
self.end_wait_seconds = end_wait_seconds
self.wait_on_deterministic_values = wait_on_deterministic_values
# `no' means "number"
self.no_violation_verification_runs = no_violation_verification_runs
self._runtime_stats = RuntimeStats(
self.subsequence_id, runtime_stats_path=runtime_stats_path)
# Whether to try alternate trace splitting techiques besides splitting by time.
self.optimized_filtering = optimized_filtering
self.forker = forker
self.replay_final_trace = replay_final_trace
self.strict_assertion_checking = strict_assertion_checking
self.delay_flow_mods = delay_flow_mods
def __init__(self, simulation_cfg, superlog_path_or_dag,
invariant_check_name=None,
transform_dag=None, end_wait_seconds=0.5,
mcs_trace_path=None, extra_log=None, runtime_stats_path=None,
wait_on_deterministic_values=False,
no_violation_verification_runs=1,
optimized_filtering=False, forker=LocalForker(),
replay_final_trace=True, strict_assertion_checking=False,
**kwargs):
super(MCSFinder, self).__init__(simulation_cfg)
# number of subsequences delta debugging has examined so far, for
# distingushing runtime stats from different intermediate runs.
self.subsequence_id = 0
self.mcs_log_tracker = None
self.replay_log_tracker = None
self.mcs_trace_path = mcs_trace_path
self.sync_callback = None
self._log = logging.getLogger("mcs_finder")
if invariant_check_name is None:
raise ValueError("Must specify invariant check")
if invariant_check_name not in name_to_invariant_check:
raise ValueError('''Unknown invariant check %s.\n'''
'''Invariant check name must be defined in config.invariant_checks''',
invariant_check_name)
self.invariant_check = name_to_invariant_check[invariant_check_name]
if type(superlog_path_or_dag) == str:
self.superlog_path = superlog_path_or_dag
# The dag is codefied as a list, where each element has
# a list of its dependents
self.dag = EventDag(log_parser.parse_path(self.superlog_path))
else:
self.dag = superlog_path_or_dag
last_invariant_violation = self.dag.get_last_invariant_violation()
if last_invariant_violation is None:
raise ValueError("No invariant violation found in dag...")
violations = last_invariant_violation.violations
if len(violations) > 1:
self.bug_signature = None
while self.bug_signature is None:
msg.interactive("\n------------------------------------------\n")
msg.interactive("Multiple violations detected! Choose one for MCS Finding:")
for i, violation in enumerate(violations):
msg.interactive(" [%d] %s" % (i+1, violation))
violation_index = msg.raw_input("> ")
if re.match("^\d+$", violation_index) is None or\
int(violation_index) < 1 or\
int(violation_index) > len(violations):
msg.fail("Must provide an integer between 1 and %d!" % len(violations))
continue
self.bug_signature = violations[int(violation_index)-1]
else:
self.bug_signature = violations[0]
msg.success("\nBug signature to match is %s. Proceeding with MCS finding!\n" % self.bug_signature)
self.transform_dag = transform_dag
# A second log with just our MCS progress log messages
self._extra_log = extra_log
self.kwargs = kwargs
self.end_wait_seconds = end_wait_seconds
self.wait_on_deterministic_values = wait_on_deterministic_values
# `no' means "number"
self.no_violation_verification_runs = no_violation_verification_runs
self._runtime_stats = RuntimeStats(self.subsequence_id, runtime_stats_path=runtime_stats_path)
# Whether to try alternate trace splitting techiques besides splitting by time.
self.optimized_filtering = optimized_filtering
self.forker = forker
self.replay_final_trace = replay_final_trace
self.strict_assertion_checking = strict_assertion_checking
def __init__(self, simulation_cfg, superlog_path_or_dag,
invariant_check_name="", bug_signature="", transform_dag=None,
mcs_trace_path=None, extra_log=None, runtime_stats_path=None,
max_replays_per_subsequence=1,
optimized_filtering=False, forker=LocalForker(),
replay_final_trace=True, strict_assertion_checking=False,
no_violation_verification_runs=None,
**kwargs):
''' Note that you may pass in any keyword argument for Replayer to
MCSFinder, except 'bug_signature' and 'invariant_check_name' '''
super(MCSFinder, self).__init__(simulation_cfg)
# number of subsequences delta debugging has examined so far, for
# distingushing runtime stats from different intermediate runs.
self.subsequence_id = 0
self.mcs_log_tracker = None
self.replay_log_tracker = None
self.mcs_trace_path = mcs_trace_path
self.sync_callback = None
self._log = logging.getLogger("mcs_finder")
if invariant_check_name == "":
raise ValueError("Must specify invariant check")
if invariant_check_name not in name_to_invariant_check:
raise ValueError('''Unknown invariant check %s.\n'''
'''Invariant check name must be defined in config.invariant_checks''',
invariant_check_name)
self.invariant_check_name = invariant_check_name
self.invariant_check = name_to_invariant_check[invariant_check_name]
if type(superlog_path_or_dag) == str:
self.superlog_path = superlog_path_or_dag
# The dag is codefied as a list, where each element has
# a list of its dependents
self.dag = EventDag(log_parser.parse_path(self.superlog_path))
else:
self.dag = superlog_path_or_dag
if self.simulation_cfg.ignore_interposition:
filtered_events = [e for e in self.dag.events if type(e) not in all_internal_events]
self.dag = EventDag(filtered_events)
last_invariant_violation = self.dag.get_last_invariant_violation()
if last_invariant_violation is None:
raise ValueError("No invariant violation found in dag...")
violations = last_invariant_violation.violations
self.bug_signature = bug_signature
if len(violations) > 1:
while self.bug_signature == "":
msg.interactive("\n------------------------------------------\n")
msg.interactive("Multiple violations detected! Choose one for MCS Finding:")
for i, violation in enumerate(violations):
msg.interactive(" [%d] %s" % (i+1, violation))
violation_index = msg.raw_input("> ")
if re.match("^\d+$", violation_index) is None or\
int(violation_index) < 1 or\
int(violation_index) > len(violations):
msg.fail("Must provide an integer between 1 and %d!" % len(violations))
continue
self.bug_signature = violations[int(violation_index)-1]
if self.bug_signature == "":
self.bug_signature = violations[0]
msg.success("\nBug signature to match is %s. Proceeding with MCS finding!\n" % self.bug_signature)
self.transform_dag = transform_dag
# A second log with just our MCS progress log messages
self._extra_log = extra_log
self.kwargs = kwargs
unknown_kwargs = [ k for k in kwargs.keys() if k not in Replayer.kwargs ]
if unknown_kwargs != []:
raise ValueError("Unknown kwargs %s" % str(unknown_kwargs))
if no_violation_verification_runs is not None:
raise ValueError('''no_violation_verification_runs parameter is deprecated. '''
'''Use max_replays_per_subsequence.''')
self.max_replays_per_subsequence = max_replays_per_subsequence
self._runtime_stats = RuntimeStats(self.subsequence_id, runtime_stats_path=runtime_stats_path)
# Whether to try alternate trace splitting techiques besides splitting by time.
self.optimized_filtering = optimized_filtering
self.forker = forker
self.replay_final_trace = replay_final_trace
self.strict_assertion_checking = strict_assertion_checking
