def wrapper(request, *args, **kwargs):
"""Decorator wrapper method
"""
try:
return func(request, *args, **kwargs)
except task_responses.FatalTaskError as error:
logging.exception(error)
return task_responses.terminateTask()
except Exception as exception:
logging.exception(exception)
return task_responses.repeatTask()
def wrapper(request, *args, **kwargs):
"""Decorator wrapper method
"""
try:
return func(request, *args, **kwargs)
except task_responses.FatalTaskError as error:
logging.exception(error)
return task_responses.terminateTask()
except Exception as exception:
logging.exception(exception)
return task_responses.repeatTask()
def wrapper(func):
def iterative_wrapped(request, *args, **kwargs):
"""Decorator wrapper method
Args:
request: Django HTTP Request object
request.POST usage:
fields: a JSON dict for the properties that the entities should have.
This updates values from the task_default entry.
start_key: the key of the next entity to fetch
Returns:
Standard HTTP Django response
"""
post_dict = request.POST
fields = task_default.get('fields', {})
if 'fields' in post_dict:
fields.update(pickle.loads(str(post_dict['fields'])))
start_key = task_default.get('start_key', None)
if 'start_key' in post_dict:
# get the key where to start this iteration
start_key = post_dict['start_key']
if start_key:
start_key = db.Key(start_key)
# get the entities for this iteration
entities, next_start_key = logic.getBatchOfData(
filter=fields, start_key=start_key)
# copy the post_dict so that the wrapped function can edit what it needs
context = post_dict.copy()
try:
func(request,
entities=entities,
context=context,
*args,
**kwargs)
except task_responses.FatalTaskError, error:
logging.debug(post_dict)
logging.error(error)
return task_responses.terminateTask()
except Exception, exception:
logging.debug(post_dict)
logging.error(exception)
return task_responses.repeatTask()
def iterative_task(logic, repeat_in=None, **task_default):
"""Iterative wrapper method
Args:
logic: the Logic instance to get entities for
repeat_in: the task will be executed again t seconds after completion
task_default: keyword arguments which can contain the following options:
fields: dictionary to filter the entities on
start_key: the default key where to start this iterative task
"""
def wrapper(func):
def iterative_wrapped(request, *args, **kwargs):
"""Decorator wrapper method
Args:
request: Django HTTP Request object
request.POST usage:
fields: a JSON dict for the properties that the entities should have.
This updates values from the task_default entry.
start_key: the key of the next entity to fetch
Returns:
Standard HTTP Django response
"""
post_dict = request.POST
fields = task_default.get('fields', {})
if 'fields' in post_dict:
fields.update(pickle.loads(str(post_dict['fields'])))
start_key = task_default.get('start_key', None)
if 'start_key' in post_dict:
# get the key where to start this iteration
start_key = post_dict['start_key']
if start_key:
start_key = db.Key(start_key)
# get the entities for this iteration
entities, next_start_key = logic.getBatchOfData(
filter=fields, start_key=start_key)
# copy the post_dict so that the wrapped function can edit what it needs
context = post_dict.copy()
# when true, the iterative task will not be repeated when completed
do_not_repeat = False
try:
func(request,
entities=entities,
context=context,
*args,
**kwargs)
except task_responses.DoNotRepeatException, exception:
do_not_repeat = True
except task_responses.FatalTaskError, error:
logging.debug(post_dict)
logging.error(error)
return task_responses.terminateTask()
except Exception, exception:
logging.debug(post_dict)
logging.error(exception)
return task_responses.repeatTask()
# strings.
context[str(key)] = value
logging.info('Sending %s' %context)
message = mail.EmailMessage(**context)
try:
message.check_initialized()
except:
logging.error('This message was not properly initialized')
mail_entity.delete()
return responses.terminateTask()
def txn():
"""Transaction that ensures the deletion of the Email entity only if
the mail has been successfully sent.
"""
mail_entity.delete()
message.send()
try:
db.RunInTransaction(txn)
except mail.Error, exception:
# shouldn't happen because validate has been called, keeping the Email
# entity for study purposes.
return error_handler.logErrorAndReturnOK(exception)
except OverQuotaError:
return responses.repeatTask()
# mail successfully sent
return responses.terminateTask()
def sendMail(self, request):
"""Sends out an email that is stored in the datastore.
The POST request should contain the following entries:
mail_key: Datastore key for an Email entity.
"""
post_dict = request.POST
mail_key = post_dict.get('mail_key', None)
if not mail_key:
return error_handler.logErrorAndReturnOK('No email key specified')
# TODO(daniel): so ugly...
try:
mail_entity = db.get(mail_key)
except datastore_errors.BadKeyError:
mail_entity = ndb.Key(urlsafe=mail_key).get()
if not mail_entity:
return error_handler.logErrorAndReturnOK(
'No email entity found for key %s' % mail_key)
# construct the EmailMessage from the given context
loaded_context = json.loads(mail_entity.context)
context = {}
for key, value in loaded_context.iteritems():
# If we don't do this python will complain about kwargs not being
# strings.
context[str(key)] = value
logging.info('Sending %s', context)
message = mail.EmailMessage(**context)
try:
message.check_initialized()
except Exception as e:
logging.exception(e)
context['body'] = context.get('body', '')[:10]
logging.error('This message was not properly initialized: "%s"',
context)
mail_entity.delete()
return responses.terminateTask()
def txn():
"""Transaction that ensures the deletion of the Email entity only if
the mail has been successfully sent.
"""
mail_entity.delete()
message.send()
try:
db.RunInTransaction(txn)
except mail.Error as exception:
# shouldn't happen because validate has been called, keeping the Email
# entity for study purposes.
return error_handler.logErrorAndReturnOK(exception)
except (OverQuotaError, DeadlineExceededError) as e:
return responses.repeatTask()
# mail successfully sent
return responses.terminateTask()
def iterative_wrapped(request, *args, **kwargs):
"""Decorator wrapper method
Args:
request: Django HTTP Request object
request.POST usage:
fields: a JSON dict for the properties that the entities should have.
This updates values from the task_default entry.
start_key: the key of the next entity to fetch
Returns:
Standard HTTP Django response
"""
post_dict = request.POST
fields = task_default.get('fields', {})
if 'fields' in post_dict:
fields.update(pickle.loads(str(post_dict['fields'])))
start_key = task_default.get('start_key', None)
if 'start_key' in post_dict:
# get the key where to start this iteration
start_key = post_dict['start_key']
if start_key:
start_key = db.Key(start_key)
# get the entities for this iteration
entities, next_start_key = logic.getBatchOfData(filter=fields,
start_key=start_key)
# copy the post_dict so that the wrapped function can edit what it needs
context = post_dict.copy()
# when true, the iterative task will not be repeated when completed
do_not_repeat = False
try:
func(request, entities=entities, context=context, *args, **kwargs)
except task_responses.DoNotRepeatException as exception:
do_not_repeat = True
except task_responses.FatalTaskError as error:
logging.debug(post_dict)
logging.error(error)
return task_responses.terminateTask()
except Exception as exception:
logging.debug(post_dict)
logging.error(exception)
return task_responses.repeatTask()
if next_start_key:
# set the key to use for the next iteration
context.update({'start_key': next_start_key})
task_responses.startTask(url=request.path, context=context)
elif not do_not_repeat and repeat_in is not None:
# the task will be executed again after repeat_in seconds
if 'start_key' in context:
del context['start_key']
task_responses.startTask(url=request.path, countdown=repeat_in,
context=context)
return task_responses.terminateTask()
def iterative_task(logic, repeat_in=None, **task_default):
"""Iterative wrapper method
Args:
logic: the Logic instance to get entities for
repeat_in: the task will be executed again t seconds after completion
task_default: keyword arguments which can contain the following options:
fields: dictionary to filter the entities on
start_key: the default key where to start this iterative task
"""
def wrapper(func):
def iterative_wrapped(request, *args, **kwargs):
"""Decorator wrapper method
Args:
request: Django HTTP Request object
request.POST usage:
fields: a JSON dict for the properties that the entities should have.
This updates values from the task_default entry.
start_key: the key of the next entity to fetch
Returns:
Standard HTTP Django response
"""
post_dict = request.POST
fields = task_default.get('fields', {})
if 'fields' in post_dict:
fields.update(pickle.loads(str(post_dict['fields'])))
start_key = task_default.get('start_key', None)
if 'start_key' in post_dict:
# get the key where to start this iteration
start_key = post_dict['start_key']
if start_key:
start_key = db.Key(start_key)
# get the entities for this iteration
entities, next_start_key = logic.getBatchOfData(filter=fields,
start_key=start_key)
# copy the post_dict so that the wrapped function can edit what it needs
context = post_dict.copy()
# when true, the iterative task will not be repeated when completed
do_not_repeat = False
try:
func(request, entities=entities, context=context, *args, **kwargs)
except task_responses.DoNotRepeatException, exception:
do_not_repeat = True
except task_responses.FatalTaskError, error:
logging.debug(post_dict)
logging.error(error)
return task_responses.terminateTask()
except Exception, exception:
logging.debug(post_dict)
logging.error(exception)
return task_responses.repeatTask()
def iterative_wrapped(request, *args, **kwargs):
"""Decorator wrapper method
Args:
request: Django HTTP Request object
request.POST usage:
fields: a JSON dict for the properties that the entities should have.
This updates values from the task_default entry.
start_key: the key of the next entity to fetch
Returns:
Standard HTTP Django response
"""
post_dict = request.POST
fields = task_default.get("fields", {})
if "fields" in post_dict:
fields.update(pickle.loads(str(post_dict["fields"])))
start_key = task_default.get("start_key", None)
if "start_key" in post_dict:
# get the key where to start this iteration
start_key = post_dict["start_key"]
if start_key:
start_key = db.Key(start_key)
# get the entities for this iteration
entities, next_start_key = logic.getBatchOfData(filter=fields, start_key=start_key)
# copy the post_dict so that the wrapped function can edit what it needs
context = post_dict.copy()
# when true, the iterative task will not be repeated when completed
do_not_repeat = False
try:
func(request, entities=entities, context=context, *args, **kwargs)
except task_responses.DoNotRepeatException as exception:
do_not_repeat = True
except task_responses.FatalTaskError as error:
logging.debug(post_dict)
logging.error(error)
return task_responses.terminateTask()
except Exception as exception:
logging.debug(post_dict)
logging.error(exception)
return task_responses.repeatTask()
if next_start_key:
# set the key to use for the next iteration
context.update({"start_key": next_start_key})
task_responses.startTask(url=request.path, context=context)
elif not do_not_repeat and repeat_in is not None:
# the task will be executed again after repeat_in seconds
if "start_key" in context:
del context["start_key"]
task_responses.startTask(url=request.path, countdown=repeat_in, context=context)
return task_responses.terminateTask()
def sendMail(self, request):
"""Sends out an email that is stored in the datastore.
The POST request should contain the following entries:
mail_key: Datastore key for an Email entity.
"""
post_dict = request.POST
mail_key = post_dict.get('mail_key', None)
if not mail_key:
return error_handler.logErrorAndReturnOK('No email key specified')
# TODO(daniel): so ugly...
try:
mail_entity = db.get(mail_key)
except datastore_errors.BadKeyError:
mail_entity = ndb.Key(urlsafe=mail_key).get()
if not mail_entity:
return error_handler.logErrorAndReturnOK(
'No email entity found for key %s' % mail_key)
# construct the EmailMessage from the given context
loaded_context = json.loads(mail_entity.context)
context = {}
for key, value in loaded_context.iteritems():
# If we don't do this python will complain about kwargs not being
# strings.
context[str(key)] = value
logging.info('Sending %s', context)
message = mail.EmailMessage(**context)
try:
message.check_initialized()
except Exception as e:
logging.exception(e)
context['body'] = context.get('body', '')[:10]
logging.error('This message was not properly initialized: "%s"', context)
mail_entity.delete()
return responses.terminateTask()
def txn():
"""Transaction that ensures the deletion of the Email entity only if
the mail has been successfully sent.
"""
mail_entity.delete()
message.send()
try:
db.RunInTransaction(txn)
except mail.Error as exception:
# shouldn't happen because validate has been called, keeping the Email
# entity for study purposes.
return error_handler.logErrorAndReturnOK(exception)
except (OverQuotaError, DeadlineExceededError) as e:
return responses.repeatTask()
# mail successfully sent
return responses.terminateTask()
