def transaction_pubevents(request, tm=transaction.manager):
ok_exception = None
try:
setDefaultSkin(request)
newInteraction()
tm.begin()
notify(pubevents.PubStart(request))
try:
yield None
except (HTTPOk, HTTPRedirection) as exc:
ok_exception = exc
notify(pubevents.PubBeforeCommit(request))
if tm.isDoomed():
tm.abort()
else:
tm.commit()
notify(pubevents.PubSuccess(request))
except Exception:
exc_info = sys.exc_info()
notify(
pubevents.PubBeforeAbort(request, exc_info,
request.supports_retry()))
tm.abort()
notify(
pubevents.PubFailure(request, exc_info, request.supports_retry()))
raise
finally:
endInteraction()
if ok_exception is not None:
raise ok_exception
def transaction_pubevents(request, response, tm=transaction.manager):
try:
setDefaultSkin(request)
newInteraction()
tm.begin()
notify(pubevents.PubStart(request))
yield
notify(pubevents.PubBeforeCommit(request))
if tm.isDoomed():
tm.abort()
else:
tm.commit()
notify(pubevents.PubSuccess(request))
except Exception as exc:
# Normalize HTTP exceptions
# (For example turn zope.publisher NotFound into zExceptions NotFound)
exc_type, _ = upgradeException(exc.__class__, None)
if not isinstance(exc, exc_type):
exc = exc_type(str(exc))
# Create new exc_info with the upgraded exception.
exc_info = (exc_type, exc, sys.exc_info()[2])
try:
# Raise exception from app if handle-errors is False
# (set by zope.testbrowser in some cases)
if request.environ.get('x-wsgiorg.throw_errors', False):
reraise(*exc_info)
if isinstance(exc, Unauthorized):
# _unauthorized modifies the response in-place. If this hook
# is used, an exception view for Unauthorized has to merge
# the state of the response and the exception instance.
exc.setRealm(response.realm)
response._unauthorized()
response.setStatus(exc.getStatus())
# Handle exception view
exc_view_created = _exc_view_created_response(
exc, request, response)
notify(
pubevents.PubBeforeAbort(request, exc_info,
request.supports_retry()))
tm.abort()
notify(
pubevents.PubFailure(request, exc_info,
request.supports_retry()))
if not (exc_view_created or isinstance(exc, Unauthorized)):
reraise(*exc_info)
finally:
# Avoid traceback / exception reference cycle.
del exc, exc_info
finally:
endInteraction()
def publish(
request,
module_name,
after_list,
debug=0,
# Optimize:
call_object=call_object,
missing_name=missing_name,
dont_publish_class=dont_publish_class,
mapply=mapply,
):
(bobo_before, bobo_after, object, realm, debug_mode, err_hook,
validated_hook, transactions_manager) = get_module_info(module_name)
parents = None
response = None
try:
notify(pubevents.PubStart(request))
# TODO pass request here once BaseRequest implements IParticipation
newInteraction()
request.processInputs()
request_get = request.get
response = request.response
# First check for "cancel" redirect:
if request_get('SUBMIT', '').strip().lower() == 'cancel':
cancel = request_get('CANCEL_ACTION', '')
if cancel:
# Relative URLs aren't part of the spec, but are accepted by
# some browsers.
for part, base in zip(
urlparse(cancel)[:3],
urlparse(request['BASE1'])[:3]):
if not part:
continue
if not part.startswith(base):
cancel = ''
break
if cancel:
raise Redirect(cancel)
after_list[0] = bobo_after
if debug_mode:
response.debug_mode = debug_mode
if realm and not request.get('REMOTE_USER', None):
response.realm = realm
noSecurityManager()
if bobo_before is not None:
bobo_before()
# Get the path list.
# According to RFC1738 a trailing space in the path is valid.
path = request_get('PATH_INFO')
request['PARENTS'] = parents = [object]
if transactions_manager:
transactions_manager.begin()
object = request.traverse(path, validated_hook=validated_hook)
if IBrowserPage.providedBy(object):
request.postProcessInputs()
notify(pubevents.PubAfterTraversal(request))
if transactions_manager:
recordMetaData(object, request)
result = mapply(object,
request.args,
request,
call_object,
1,
missing_name,
dont_publish_class,
request,
bind=1)
if result is not response:
response.setBody(result)
notify(pubevents.PubBeforeCommit(request))
if transactions_manager:
transactions_manager.commit()
notify(pubevents.PubSuccess(request))
endInteraction()
return response
except:
# save in order to give 'PubFailure' the original exception info
exc_info = sys.exc_info()
# DM: provide nicer error message for FTP
sm = None
if response is not None:
sm = getattr(response, "setMessage", None)
if sm is not None:
from asyncore import compact_traceback
cl, val = sys.exc_info()[:2]
sm('%s: %s %s' % (getattr(cl, '__name__', cl), val,
debug_mode and compact_traceback()[-1] or ''))
# debug is just used by tests (has nothing to do with debug_mode!)
if not debug and err_hook is not None:
retry = False
if parents:
parents = parents[0]
try:
try:
return err_hook(
parents,
request,
sys.exc_info()[0],
sys.exc_info()[1],
sys.exc_info()[2],
)
except Retry:
if not request.supports_retry():
return err_hook(
parents,
request,
sys.exc_info()[0],
sys.exc_info()[1],
sys.exc_info()[2],
)
retry = True
finally:
# Note: 'abort's can fail.
# Nevertheless, we want end request handling.
try:
try:
notify(
pubevents.PubBeforeAbort(request, exc_info, retry))
finally:
if transactions_manager:
transactions_manager.abort()
finally:
endInteraction()
notify(pubevents.PubFailure(request, exc_info, retry))
# Only reachable if Retry is raised and request supports retry.
newrequest = request.retry()
request.close() # Free resources held by the request.
# Set the default layer/skin on the newly generated request
if ISkinnable.providedBy(newrequest):
setDefaultSkin(newrequest)
try:
return publish(newrequest, module_name, after_list, debug)
finally:
newrequest.close()
else:
# Note: 'abort's can fail.
# Nevertheless, we want end request handling.
try:
try:
notify(pubevents.PubBeforeAbort(request, exc_info, False))
finally:
if transactions_manager:
transactions_manager.abort()
finally:
endInteraction()
notify(pubevents.PubFailure(request, exc_info, False))
raise
def transaction_pubevents(request, response, tm=transaction.manager):
try:
setDefaultSkin(request)
newInteraction()
tm.begin()
notify(pubevents.PubStart(request))
yield
notify(pubevents.PubBeforeCommit(request))
if tm.isDoomed():
tm.abort()
else:
tm.commit()
notify(pubevents.PubSuccess(request))
except Exception as exc:
# Normalize HTTP exceptions
# (For example turn zope.publisher NotFound into zExceptions NotFound)
exc_type, _ = upgradeException(exc.__class__, None)
if not isinstance(exc, exc_type):
exc = exc_type(str(exc))
# Create new exc_info with the upgraded exception.
exc_info = (exc_type, exc, sys.exc_info()[2])
try:
# Raise exception from app if handle-errors is False
# (set by zope.testbrowser in some cases)
if request.environ.get('x-wsgiorg.throw_errors', False):
reraise(*exc_info)
retry = False
unauth = False
debug_exc = getattr(response, 'debug_exceptions', False)
# If the exception is transient and the request can be retried,
# shortcut further processing. It makes no sense to have an
# exception view registered for this type of exception.
if isinstance(exc, TransientError) and request.supports_retry():
retry = True
else:
# Handle exception view. Make sure an exception view that
# blows up doesn't leave the user e.g. unable to log in.
try:
exc_view_created = _exc_view_created_response(
exc, request, response)
except Exception:
exc_view_created = False
# _unauthorized modifies the response in-place. If this hook
# is used, an exception view for Unauthorized has to merge
# the state of the response and the exception instance.
if isinstance(exc, Unauthorized):
unauth = True
exc.setRealm(response.realm)
response._unauthorized()
response.setStatus(exc.getStatus())
# Notify subscribers that this request is failing.
notify(pubevents.PubBeforeAbort(request, exc_info, retry))
tm.abort()
notify(pubevents.PubFailure(request, exc_info, retry))
if retry or \
(not unauth and (debug_exc or not exc_view_created)):
reraise(*exc_info)
finally:
# Avoid traceback / exception reference cycle.
del exc, exc_info
finally:
endInteraction()
