def handleException(self, exc_info):
'See IPublisherResponse'
# We want exception to be formatted to native strings. Pick
# respective io class depending on python version.
f = BytesIO() if PYTHON2 else StringIO()
print_exception(exc_info[0], exc_info[1], exc_info[2], 100, f)
self.setResult(f.getvalue())
def handleException(self, exc_info):
'See IPublisherResponse'
# We want exception to be formatted to native strings. Pick
# respective io class depending on python version.
f = BytesIO() if PYTHON2 else StringIO()
print_exception(
exc_info[0], exc_info[1], exc_info[2], 100, f)
self.setResult(f.getvalue())
def _callFUT(self, as_html=False):
import io
buf = io.StringIO() if bytes is not str else io.BytesIO()
from zope.exceptions.exceptionformatter import print_exception
t, v, b = sys.exc_info()
try:
print_exception(t, v, b, file=buf, as_html=as_html)
return buf.getvalue()
finally:
del b
def formatException(self, ei):
"""Format and return the specified exception information as a string.
Uses zope.exceptions.exceptionformatter to generate the traceback.
"""
sio = cStringIO.StringIO()
print_exception(ei[0], ei[1], ei[2], file=sio, with_filenames=True)
s = sio.getvalue()
if s.endswith("\n"):
s = s[:-1]
return s
def _callFUT(self, as_html=False):
import io
buf = io.StringIO() if bytes is not str else io.BytesIO()
from zope.exceptions.exceptionformatter import print_exception
t, v, b = sys.exc_info()
try:
print_exception(t, v, b, file=buf, as_html=as_html)
return buf.getvalue()
finally:
del b
def formatException(self, ei):
"""Format and return the specified exception information as a string.
Uses zope.exceptions.exceptionformatter to generate the traceback.
"""
sio = cStringIO.StringIO()
print_exception(ei[0], ei[1], ei[2], file=sio, with_filenames=True)
s = sio.getvalue()
if s.endswith("\n"):
s = s[:-1]
return s
def _callFUT(self, as_html=False):
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
buf = StringIO()
import sys
from zope.exceptions.exceptionformatter import print_exception
t, v, b = sys.exc_info()
try:
print_exception(t, v, b, file=buf, as_html=as_html)
return buf.getvalue()
finally:
del b
def __call__(self, *args, **kwargs):
# NOTE: We don't handle repoze.tm being in the pipeline
number = self.attempts
note = self.describe_transaction(*args, **kwargs)
while number:
number -= 1
tx = None # In case there's an exception /beginning/ the transaction, we still need the variable
try:
tx = transaction.begin()
if note and note != "Unknown":
tx.note(note)
if self.attempts != 1:
self.prep_for_retry(number, *args, **kwargs)
result = self.run_handler(*args, **kwargs)
# We should still have the same transaction. If we don't,
# then we get a ValueError from tx.commit; however, we let this
# pass if we would be aborting anyway.
# assert transaction.get() is tx, "Started new transaction out from under us!"
if self.should_abort_due_to_no_side_effects(*args, **kwargs):
# These transactions can safely be aborted and ignored, reducing contention on commit locks
# TODO: It would be cool to open them readonly in the first place.
# TODO: I don't really know if this is kosher, but it does seem to work so far
# NOTE: We raise these as an exception instead of aborting in the loop so that
# we don't retry if something goes wrong aborting
raise self.AbortException(result, "side-effect free")
if tx.isDoomed() or self.should_veto_commit(result, *args, **kwargs):
raise self.AbortException(result, "doomed or vetoed")
# note: commit our tx variable, NOT what is current; if they aren't the same, this raises ValueError
_do_commit(tx, note, self.long_commit_duration)
self.__free(tx); del tx
return result
except self.AbortException as e:
duration = _timing(transaction.abort, 'transaction.abort') # note: NOT our tx variable, whatever is current
self.__free(tx); del tx
logger.log(TRACE, "Aborted %s transaction for %s in %ss", e.reason, note, duration)
return e.response
except Exception as e: # pylint:disable=I0011,W0703
exc_info = sys.exc_info()
# The code in the transaction package checks the retryable state
# BEFORE aborting the current transaction. This matters because
# aborting the transaction changes the transaction that the manager
# has to a new one, and thus changes the set of registered resources
# that participate in _retryable, depending on what synchronizers
# are registered.
retryable = self._retryable(exc_info)
self._abort_on_exception(exc_info, retryable, number, tx)
self.__free(tx); del tx
del exc_info
if number <= 0: # AFTER the abort
raise
if not retryable:
raise
if self.sleep:
_sleep(self.sleep)
# logger.log( TRACE, "Retrying transaction on exception %d", number, exc_info=True )
except SystemExit:
if not sys: # pragma: no cover (module shutdown)
raise
# If we are exiting, or otherwise probably going to
# exit, do try to abort the transaction. The state of
# the system is somewhat undefined at this point,
# though, so don't try to time or log it, just print
# to stderr on exception. Be sure to reraise the
# original SystemExit
exc_info = sys.exc_info()
try:
transaction.abort() # note: NOT our tx variable, whatever is current
except: # pylint:disable=I0011,W0702
if print_exception:
print_exception(*sys.exc_info())
six.reraise(*exc_info)
def handleException(self, exc_info):
'See IPublisherResponse'
f = StringIO()
print_exception(
exc_info[0], exc_info[1], exc_info[2], 100, f)
self.setResult(f.getvalue())
def __call__(self, *args, **kwargs): # pylint:disable=too-many-branches,too-many-statements
# NOTE: We don't handle repoze.tm being in the pipeline
number = self.attempts
note = self.describe_transaction(*args, **kwargs)
# In case there's an exception /beginning/ the transaction, we still need the variable
tx = None
exc_info = None
while number:
number -= 1
# Throw away any previous exceptions our loop raised.
# The TB could be taking lots of memory
exc_clear()
try:
tx = transaction.begin()
if note and note != "Unknown":
tx.note(note)
if self.attempts != 1:
self.prep_for_retry(number, *args, **kwargs)
result = self.run_handler(*args, **kwargs)
# We should still have the same transaction. If we don't,
# then we get a ValueError from tx.commit; however, we let this
# pass if we would be aborting anyway.
# assert transaction.get() is tx, "Started new transaction out from under us!"
if self.should_abort_due_to_no_side_effects(*args, **kwargs):
# These transactions can safely be aborted and ignored, reducing contention on commit locks
# TODO: It would be cool to open them readonly in the first place.
# TODO: I don't really know if this is kosher, but it does seem to work so far
# NOTE: We raise these as an exception instead of aborting in the loop so that
# we don't retry if something goes wrong aborting
raise self.AbortException(result, "side-effect free")
if tx.isDoomed() or self.should_veto_commit(result, *args, **kwargs):
raise self.AbortException(result, "doomed or vetoed")
# note: commit our tx variable, NOT what is current; if they aren't the same, this raises ValueError
_do_commit(tx, note, self.long_commit_duration)
self.__free(tx); del tx
return result
except self.AbortException as e:
duration = _timing(transaction.abort, 'transaction.abort') # note: NOT our tx variable, whatever is current
self.__free(tx); del tx
logger.log(TRACE, "Aborted %s transaction for %s in %ss", e.reason, note, duration)
return e.response
except Exception as e: # pylint:disable=I0011,W0703
exc_info = sys.exc_info()
# The code in the transaction package checks the retryable state
# BEFORE aborting the current transaction. This matters because
# aborting the transaction changes the transaction that the manager
# has to a new one, and thus changes the set of registered resources
# that participate in _retryable, depending on what synchronizers
# are registered.
retryable = self._retryable(tx, exc_info)
self._abort_on_exception(exc_info, retryable, number, tx)
self.__free(tx); del tx
if number <= 0: # AFTER the abort
raise
if not retryable:
raise
if self.sleep:
_sleep(self.sleep)
# logger.log( TRACE, "Retrying transaction on exception %d", number, exc_info=True )
except SystemExit:
if not sys: # pragma: no cover (module shutdown)
raise
# If we are exiting, or otherwise probably going to
# exit, do try to abort the transaction. The state of
# the system is somewhat undefined at this point,
# though, so don't try to time or log it, just print
# to stderr on exception. Be sure to reraise the
# original SystemExit
exc_info = sys.exc_info()
try:
transaction.abort() # note: NOT our tx variable, whatever is current
except: # pylint:disable=I0011,W0702
if print_exception is not None:
print_exception(*sys.exc_info())
six.reraise(*exc_info)
finally:
exc_info = None
