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add an option to raise context exception #285

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add an option to raise context exception #285

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9 changes: 8 additions & 1 deletion python_dynamodb_lock/python_dynamodb_lock.py
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Original file line number Diff line number Diff line change
Expand Up @@ -348,6 +348,7 @@ def acquire_lock(self,
retry_timeout=None,
additional_attributes=None,
app_callback=None,
raise_context_exception=False,
):
"""
Acquires a distributed DynaomDBLock for the given key(s).
Expand Down Expand Up @@ -385,6 +386,7 @@ def acquire_lock(self,
:param dict additional_attributes: Arbitrary application metadata to be stored with the lock
:param Callable app_callback: Callback function that can be used to notify the app of lock entering
the danger period, or an unexpected release
:param bool raise_context_exception: Allow exception in the context to be raised
:rtype: DynamoDBLock
:return: A distributed lock instance
"""
Expand All @@ -405,6 +407,7 @@ def acquire_lock(self,
additional_attributes=additional_attributes,
app_callback=app_callback,
lock_client=self,
raise_context_exception=raise_context_exception,
)

start_time = time.monotonic()
Expand Down Expand Up @@ -838,6 +841,7 @@ def __init__(self,
additional_attributes,
app_callback,
lock_client,
raise_context_exception,
):
"""
:param str partition_key: The primary lock identifier
Expand All @@ -851,6 +855,7 @@ def __init__(self,
:param Callable app_callback: Callback function that can be used to notify the app of lock entering
the danger period, or an unexpected release
:param DynamoDBLockClient lock_client: The client that "owns" this lock
:param bool raise_context_exception: Allow exception in the context to be raised
"""
BaseDynamoDBLock.__init__(self,
partition_key,
Expand All @@ -863,6 +868,7 @@ def __init__(self,
)
self.app_callback = app_callback
self.lock_client = lock_client
self.raise_context_exception = raise_context_exception
# additional properties
self.last_updated_time = time.monotonic()
self.thread_lock = threading.RLock()
Expand All @@ -883,7 +889,8 @@ def __exit__(self, exc_type, exc_value, traceback):
"""
logger.debug('Exiting: %s', self.unique_identifier)
self.release(best_effort=True)
return True
if not self.raise_context_exception:
return True


def release(self, best_effort=True):
Expand Down
2 changes: 1 addition & 1 deletion setup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,6 @@
test_suite='tests',
tests_require=test_requirements,
url='https://github.com/mohankishore/python_dynamodb_lock',
version='0.9.1',
version='0.9.2',
zip_safe=False,
)