async def _handle_exception(self, exception):
if isinstance(exception, (errors.LinkDetach, errors.ConnectionClose)):
if exception.action and exception.action.retry and self.auto_reconnect:
_log.info("Async handler detached. Attempting reconnect.")
await self.reconnect()
elif exception.condition == constants.ErrorCodes.UnauthorizedAccess:
_log.info("Async handler detached. Shutting down.")
error = ServiceBusAuthorizationError(str(exception), exception)
await self.close(exception=error)
raise error
else:
_log.info("Async handler detached. Shutting down.")
error = ServiceBusConnectionError(str(exception), exception)
await self.close(exception=error)
raise error
elif isinstance(exception, errors.MessageHandlerError):
if self.auto_reconnect:
_log.info("Async handler error. Attempting reconnect.")
await self.reconnect()
else:
_log.info("Async handler error. Shutting down.")
error = ServiceBusConnectionError(str(exception), exception)
await self.close(exception=error)
raise error
elif isinstance(exception, errors.AMQPConnectionError):
message = "Failed to open handler: {}".format(exception)
raise ServiceBusConnectionError(message, exception)
else:
_log.info("Unexpected error occurred (%r). Shutting down.",
exception)
error = ServiceBusError("Handler failed: {}".format(exception),
exception)
await self.close(exception=error)
raise error
def delete_subscription(self,
topic_name,
subscription_name,
fail_not_exist=False):
"""Delete a subscription entity.
:param topic_name: The name of the topic where the subscription is.
:type topic_name: str
:param subscription_name: The name of the subscription to delete.
:type subscription_name: str
:param fail_not_exist: Whether to raise an exception if the named subscription or
topic is not found. If set to True, a ServiceBusResourceNotFound will be raised.
Default value is False.
:type fail_not_exist: bool
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namesapce is not found.
:raises: ~azure.servicebus.common.errors.ServiceBusResourceNotFound if the entity is not found
and `fail_not_exist` is set to True.
"""
try:
return self.mgmt_client.delete_subscription(
topic_name, subscription_name, fail_not_exist=fail_not_exist)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
except azure.common.AzureMissingResourceHttpError as e:
raise ServiceBusResourceNotFound(
"Specificed queue does not exist.", e)
def get_topic(self, topic_name):
"""Get a client for a topic entity.
:param topic_name: The name of the topic.
:type topic_name: str
:rtype: ~azure.servicebus.servicebus_client.TopicClient
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
:raises: ~azure.servicebus.common.errors.ServiceBusResourceNotFound if the topic is not found.
Example:
.. literalinclude:: ../examples/test_examples.py
:start-after: [START get_topic_client]
:end-before: [END get_topic_client]
:language: python
:dedent: 8
:caption: Get the specific topic client from Service Bus client
"""
try:
topic = self.mgmt_client.get_topic(topic_name)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
except AzureServiceBusResourceNotFound:
raise ServiceBusResourceNotFound(
"Specificed topic does not exist.")
return TopicClient.from_entity(
self._get_host(),
topic,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
debug=self.debug)
def list_topics(self):
"""Get a client for all topic entities in the namespace.
:rtype: list[~azure.servicebus.servicebus_client.TopicClient]
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
Example:
.. literalinclude:: ../examples/test_examples.py
:start-after: [START list_topics]
:end-before: [END list_topics]
:language: python
:dedent: 4
:caption: List the topics from Service Bus client
"""
try:
topics = self.mgmt_client.list_topics()
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
topic_clients = []
for topic in topics:
topic_clients.append(
TopicClient.from_entity(
self._get_host(),
topic,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
debug=self.debug))
return topic_clients
def get_queue(self, queue_name):
"""Get a client for a queue entity.
:param queue_name: The name of the queue.
:type queue_name: str
:rtype: ~azure.servicebus.servicebus_client.QueueClient
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
:raises: ~azure.servicebus.common.errors.ServiceBusResourceNotFound if the queue is not found.
.. admonition:: Example:
.. literalinclude:: ../samples/sync_samples/test_examples.py
:start-after: [START get_queue_client]
:end-before: [END get_queue_client]
:language: python
:dedent: 8
:caption: Get the specific queue client from Service Bus client
"""
try:
queue = self.mgmt_client.get_queue(queue_name)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
except AzureServiceBusResourceNotFound:
raise ServiceBusResourceNotFound(
"Specificed queue does not exist.")
return QueueClient.from_entity(
self._get_host(),
queue,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
mgmt_client=self.mgmt_client,
debug=self.debug)
def list_queues(self):
"""Get clients for all queue entities in the namespace.
:rtype: list[~azure.servicebus.servicebus_client.QueueClient]
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
.. admonition:: Example:
.. literalinclude:: ../samples/sync_samples/test_examples.py
:start-after: [START list_queues]
:end-before: [END list_queues]
:language: python
:dedent: 4
:caption: List the queues from Service Bus client
"""
try:
queues = self.mgmt_client.list_queues()
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
queue_clients = []
for queue in queues:
queue_clients.append(
QueueClient.from_entity(
self._get_host(),
queue,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
mgmt_client=self.mgmt_client,
debug=self.debug))
return queue_clients
def list_subscriptions(self, topic_name):
"""Get an async client for all subscription entities in the topic.
:param topic_name: The topic to list subscriptions for.
:type topic_name: str
:rtype: list[~azure.servicebus.aio.async_client.SubscriptionClient]
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
:raises: ~azure.servicebus.common.errors.ServiceBusResourceNotFound if the topic is not found.
"""
try:
subs = self.mgmt_client.list_subscriptions(topic_name)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
except AzureServiceBusResourceNotFound:
raise ServiceBusResourceNotFound(
"Specificed topic does not exist.")
sub_clients = []
for sub in subs:
sub_clients.append(
SubscriptionClient.from_entity(
self._get_host(),
topic_name,
sub,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
loop=self.loop,
debug=self.debug))
return sub_clients
def list_subscriptions(self, topic_name):
"""Get a client for all subscription entities in the topic.
:param topic_name: The topic to list subscriptions for.
:type topic_name: str
:rtype: list[~azure.servicebus.servicebus_client.SubscriptionClient]
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
:raises: ~azure.servicebus.common.errors.ServiceBusResourceNotFound if the topic is not found.
.. admonition:: Example:
.. literalinclude:: ../samples/sync_samples/test_examples.py
:start-after: [START list_subscriptions]
:end-before: [END list_subscriptions]
:language: python
:dedent: 4
:caption: List the subscriptions from Service Bus client
"""
try:
subs = self.mgmt_client.list_subscriptions(topic_name)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError("Namespace: {} not found".format(self.service_namespace), e)
except AzureServiceBusResourceNotFound:
raise ServiceBusResourceNotFound("Specificed topic does not exist.")
sub_clients = []
for sub in subs:
sub_clients.append(SubscriptionClient.from_entity(
self._get_host(), topic_name, sub,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
transport_type=self.transport_type,
debug=self.debug))
return sub_clients
def get_subscription(self, topic_name, subscription_name):
"""Get a client for a subscription entity.
:param topic_name: The name of the topic.
:type topic_name: str
:param subscription_name: The name of the subscription.
:type subscription_name: str
:rtype: ~azure.servicebus.servicebus_client.SubscriptionClient
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
:raises: ~azure.servicebus.common.errors.ServiceBusResourceNotFound if the subscription is not found.
.. admonition:: Example:
.. literalinclude:: ../samples/sync_samples/test_examples.py
:start-after: [START get_subscription_client]
:end-before: [END get_subscription_client]
:language: python
:dedent: 8
:caption: Get the specific subscription client from Service Bus client
"""
try:
subscription = self.mgmt_client.get_subscription(topic_name, subscription_name)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError("Namespace: {} not found".format(self.service_namespace), e)
except AzureServiceBusResourceNotFound:
raise ServiceBusResourceNotFound("Specificed subscription does not exist.")
return SubscriptionClient.from_entity(
self._get_host(), topic_name, subscription,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
transport_type=self.transport_type,
debug=self.debug)
def create_subscription(
self,
topic_name,
subscription_name,
lock_duration=30,
requires_session=None,
default_message_time_to_live=None,
dead_lettering_on_message_expiration=None,
dead_lettering_on_filter_evaluation_exceptions=None,
enable_batched_operations=None,
max_delivery_count=None):
"""Create a subscription entity.
:param topic_name: The name of the topic under which to create the subscription.
:param subscription_name: The name of the new subscription.
:type subscription_name: str
:param lock_duration: The lock durection in seconds for each message in the subscription.
:type lock_duration: int
:param requires_session: Whether the subscription will be sessionful, and therefore require all
message to have a Session ID and be received by a sessionful receiver.
Default value is False.
:type requires_session: bool
:param default_message_time_to_live: The length of time a message will remain in the subscription
before it is either discarded or moved to the dead letter queue.
:type default_message_time_to_live: ~datetime.timedelta
:param dead_lettering_on_message_expiration: Whether to move expired messages to the
dead letter queue. Default value is False.
:type dead_lettering_on_message_expiration: bool
:param dead_lettering_on_filter_evaluation_exceptions: Whether to move messages that error on
filtering into the dead letter queue. Default is False, and the messages will be discarded.
:type dead_lettering_on_filter_evaluation_exceptions: bool
:param max_delivery_count: The maximum number of times a message will attempt to be delivered
before it is moved to the dead letter queue.
:type max_delivery_count: int
:param enable_batched_operations:
:type: enable_batched_operations: bool
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
:raises: ~azure.common.AzureConflictHttpError if a queue of the same name already exists.
"""
sub_properties = Subscription(
lock_duration="PT{}S".format(int(lock_duration)),
requires_session=requires_session,
default_message_time_to_live=default_message_time_to_live,
dead_lettering_on_message_expiration=
dead_lettering_on_message_expiration,
dead_lettering_on_filter_evaluation_exceptions=
dead_lettering_on_filter_evaluation_exceptions,
max_delivery_count=max_delivery_count,
enable_batched_operations=enable_batched_operations)
try:
return self.mgmt_client.create_subscription(
topic_name,
subscription_name,
subscription=sub_properties,
fail_on_exist=True)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
def create_queue(
self, queue_name,
lock_duration=30, max_size_in_megabytes=None,
requires_duplicate_detection=False,
requires_session=False,
default_message_time_to_live=None,
dead_lettering_on_message_expiration=False,
duplicate_detection_history_time_window=None,
max_delivery_count=None, enable_batched_operations=None):
"""Create a queue entity.
:param queue_name: The name of the new queue.
:type queue_name: str
:param lock_duration: The lock durection in seconds for each message in the queue.
:type lock_duration: int
:param max_size_in_megabytes: The max size to allow the queue to grow to.
:type max_size_in_megabytes: int
:param requires_duplicate_detection: Whether the queue will require every message with
a specified time frame to have a unique ID. Non-unique messages will be discarded.
Default value is False.
:type requires_duplicate_detection: bool
:param requires_session: Whether the queue will be sessionful, and therefore require all
message to have a Session ID and be received by a sessionful receiver.
Default value is False.
:type requires_session: bool
:param default_message_time_to_live: The length of time a message will remain in the queue
before it is either discarded or moved to the dead letter queue.
:type default_message_time_to_live: ~datetime.timedelta
:param dead_lettering_on_message_expiration: Whether to move expired messages to the
dead letter queue. Default value is False.
:type dead_lettering_on_message_expiration: bool
:param duplicate_detection_history_time_window: The period within which all incoming messages
must have a unique message ID.
:type duplicate_detection_history_time_window: ~datetime.timedelta
:param max_delivery_count: The maximum number of times a message will attempt to be delivered
before it is moved to the dead letter queue.
:type max_delivery_count: int
:param enable_batched_operations:
:type: enable_batched_operations: bool
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
:raises: ~azure.common.AzureConflictHttpError if a queue of the same name already exists.
"""
queue_properties = Queue(
lock_duration="PT{}S".format(int(lock_duration)),
max_size_in_megabytes=max_size_in_megabytes,
requires_duplicate_detection=requires_duplicate_detection,
requires_session=requires_session,
default_message_time_to_live=default_message_time_to_live,
dead_lettering_on_message_expiration=dead_lettering_on_message_expiration,
duplicate_detection_history_time_window=duplicate_detection_history_time_window,
max_delivery_count=max_delivery_count,
enable_batched_operations=enable_batched_operations)
try:
return self.mgmt_client.create_queue(queue_name, queue=queue_properties, fail_on_exist=True)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError("Namespace: {} not found".format(self.service_namespace), e)
def create_topic(self,
topic_name,
default_message_time_to_live=None,
max_size_in_megabytes=None,
requires_duplicate_detection=None,
duplicate_detection_history_time_window=None,
enable_batched_operations=None):
"""Create a topic entity.
:param topic_name: The name of the new topic.
:type topic_name: str
:param max_size_in_megabytes: The max size to allow the topic to grow to.
:type max_size_in_megabytes: int
:param requires_duplicate_detection: Whether the topic will require every message with
a specified time frame to have a unique ID. Non-unique messages will be discarded.
Default value is False.
:type requires_duplicate_detection: bool
:param default_message_time_to_live: The length of time a message will remain in the topic
before it is either discarded or moved to the dead letter queue.
:type default_message_time_to_live: ~datetime.timedelta
:param duplicate_detection_history_time_window: The period within which all incoming messages
must have a unique message ID.
:type duplicate_detection_history_time_window: ~datetime.timedelta
:param enable_batched_operations:
:type: enable_batched_operations: bool
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
:raises: ~azure.common.AzureConflictHttpError if a topic of the same name already exists.
"""
topic_properties = Topic(
max_size_in_megabytes=max_size_in_megabytes,
requires_duplicate_detection=requires_duplicate_detection,
default_message_time_to_live=default_message_time_to_live,
duplicate_detection_history_time_window=
duplicate_detection_history_time_window,
enable_batched_operations=enable_batched_operations)
try:
return self.mgmt_client.create_topic(topic_name,
topic=topic_properties,
fail_on_exist=True)
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
def list_topics(self):
"""Get an async client for all topic entities in the namespace.
:rtype: list[~azure.servicebus.aio.async_client.TopicClient]
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
"""
try:
topics = self.mgmt_client.list_topics()
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
topic_clients = []
for topic in topics:
topic_clients.append(
TopicClient.from_entity(
self._get_host(),
topic,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
loop=self.loop,
debug=self.debug))
return topic_clients
def get_properties(self):
"""Perform an operation to update the properties of the entity.
:returns: The properties of the entity as a dictionary.
:rtype: dict[str, Any]
:raises: ~azure.servicebus.common.errors.ServiceBusResourceNotFound if the entity does not exist.
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the endpoint cannot be reached.
:raises: ~azure.common.AzureHTTPError if the credentials are invalid.
"""
try:
self.entity = self._get_entity()
self.properties = dict(self.entity)
if hasattr(self.entity, 'requires_session'):
self.requires_session = self.entity.requires_session
return self.properties
except AzureServiceBusResourceNotFound:
raise ServiceBusResourceNotFound("Specificed queue does not exist.")
except azure.common.AzureHttpError:
self.entity = None
self.properties = {}
self.requires_session = False
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError("Namespace not found", e)
def list_queues(self):
"""Get async clients for all queue entities in the namespace.
:rtype: list[~azure.servicebus.aio.async_client.QueueClient]
:raises: ~azure.servicebus.common.errors.ServiceBusConnectionError if the namespace is not found.
"""
try:
queues = self.mgmt_client.list_queues()
except requests.exceptions.ConnectionError as e:
raise ServiceBusConnectionError(
"Namespace: {} not found".format(self.service_namespace), e)
queue_clients = []
for queue in queues:
queue_clients.append(
QueueClient.from_entity(
self._get_host(),
queue,
shared_access_key_name=self.shared_access_key_name,
shared_access_key_value=self.shared_access_key_value,
mgmt_client=self.mgmt_client,
loop=self.loop,
debug=self.debug))
return queue_clients
