azure.servicebus package

class azure.servicebus.AutoLockRenewer(max_lock_renewal_duration: float = 300, on_lock_renew_failure: Optional[LockRenewFailureCallback] = None, executor: Optional[ThreadPoolExecutor] = None, max_workers: Optional[int] = None)[source]

Auto renew locks for messages and sessions using a background thread pool.

Parameters
  • max_lock_renewal_duration (float) – A time in seconds that locks registered to this renewer should be maintained for. Default value is 300 (5 minutes).

  • on_lock_renew_failure (Optional[LockRenewFailureCallback]) – A callback may be specified to be called when the lock is lost on the renewable that is being registered. Default value is None (no callback).

  • executor (Optional[ThreadPoolExecutor]) – A user-specified thread pool. This cannot be combined with setting max_workers.

  • max_workers (Optional[int]) – Specify the maximum workers in the thread pool. If not specified the number used will be derived from the core count of the environment. This cannot be combined with executor.

Example:

Automatically renew a message lock
from azure.servicebus import AutoLockRenewer
lock_renewal = AutoLockRenewer(max_workers=4)
with servicebus_receiver:
    for message in servicebus_receiver:
        # Auto renew message for 1 minute.
        lock_renewal.register(servicebus_receiver, message, max_lock_renewal_duration=60)
        process_message(message)
        servicebus_receiver.complete_message(message)
Automatically renew a session lock
    from azure.servicebus import AutoLockRenewer

    lock_renewal = AutoLockRenewer(max_workers=4)
    with servicebus_client.get_queue_receiver(queue_name=queue_name, session_id=session_id) as receiver:
        session = receiver.session
        # Auto renew session lock for 2 minutes
        lock_renewal.register(receiver, session, max_lock_renewal_duration=120)
        for message in receiver:
            process_message(message)
            receiver.complete_message(message)

Auto renew locks for messages and sessions using a background thread pool. It is recommended setting max_worker to a large number or passing ThreadPoolExecutor of large max_workers number when AutoLockRenewer is supposed to deal with multiple messages or sessions simultaneously.

Parameters
  • max_lock_renewal_duration (float) – A time in seconds that locks registered to this renewer should be maintained for. Default value is 300 (5 minutes).

  • on_lock_renew_failure (Optional[LockRenewFailureCallback]) – A callback may be specified to be called when the lock is lost on the renewable that is being registered. Default value is None (no callback).

  • executor (Optional[ThreadPoolExecutor]) – A user-specified thread pool. This cannot be combined with setting max_workers.

  • max_workers (Optional[int]) – Specify the maximum workers in the thread pool. If not specified the number used will be derived from the core count of the environment. This cannot be combined with executor.

close(wait=True)[source]

Cease autorenewal by shutting down the thread pool to clean up any remaining lock renewal threads.

Parameters

wait (bool) – Whether to block until thread pool has shutdown. Default is True.

Return type

None

register(receiver: ServiceBusReceiver, renewable: Renewable, max_lock_renewal_duration: Optional[float] = None, on_lock_renew_failure: Optional[LockRenewFailureCallback] = None)None[source]

Register a renewable entity for automatic lock renewal.

Parameters
  • receiver (ServiceBusReceiver) – The ServiceBusReceiver instance that is associated with the message or the session to be auto-lock-renewed.

  • renewable (Union[ServiceBusReceivedMessage, ServiceBusSession]) – A locked entity that needs to be renewed.

  • max_lock_renewal_duration (Optional[float]) – A time in seconds that the lock should be maintained for. Default value is None. If specified, this value will override the default value specified at the constructor.

  • on_lock_renew_failure (Optional[LockRenewFailureCallback]) – A callback may be specified to be called when the lock is lost on the renewable that is being registered. Default value is None (no callback).

Return type

None

class azure.servicebus.ServiceBusClient(fully_qualified_namespace: str, credential: Union[TokenCredential, AzureSasCredential, AzureNamedKeyCredential], *, retry_total: int = 3, retry_backoff_factor: float = 0.8, retry_backoff_max: float = 120, retry_mode: str = 'exponential', **kwargs: Any)[source]

The ServiceBusClient class defines a high level interface for getting ServiceBusSender and ServiceBusReceiver.

Variables

fully_qualified_namespace (str) – The fully qualified host name for the Service Bus namespace. The namespace format is: <yournamespace>.servicebus.windows.net.

Parameters
  • fully_qualified_namespace (str) – The fully qualified host name for the Service Bus namespace. The namespace format is: <yournamespace>.servicebus.windows.net.

  • credential (TokenCredential or AzureSasCredential or AzureNamedKeyCredential) – The credential object used for authentication which implements a particular interface for getting tokens. It accepts credential objects generated by the azure-identity library and objects that implement the get_token(self, *scopes) method, or alternatively, an AzureSasCredential can be provided too.

Keyword Arguments
  • logging_enable (bool) – Whether to output network trace logs to the logger. Default is False.

  • transport_type (TransportType) – The type of transport protocol that will be used for communicating with the Service Bus service. Default is TransportType.Amqp in which case port 5671 is used. If the port 5671 is unavailable/blocked in the network environment, TransportType.AmqpOverWebsocket could be used instead which uses port 443 for communication.

  • http_proxy (Dict) – HTTP proxy settings. This must be a dictionary with the following keys: ‘proxy_hostname’ (str value) and ‘proxy_port’ (int value). Additionally the following keys may also be present: ‘username’, ‘password’.

  • user_agent (str) – If specified, this will be added in front of the built-in user agent string.

  • retry_total (int) – The total number of attempts to redo a failed operation when an error occurs. Default value is 3.

  • retry_backoff_factor (float) – Delta back-off internal in the unit of second between retries. Default value is 0.8.

  • retry_backoff_max (float) – Maximum back-off interval in the unit of second. Default value is 120.

  • retry_mode (str) – The delay behavior between retry attempts. Supported values are “fixed” or “exponential”, where default is “exponential”.

  • custom_endpoint_address (str) – The custom endpoint address to use for establishing a connection to the Service Bus service, allowing network requests to be routed through any application gateways or other paths needed for the host environment. Default is None. The format would be like “sb://<custom_endpoint_hostname>:<custom_endpoint_port>”. If port is not specified in the custom_endpoint_address, by default port 443 will be used.

  • connection_verify (str) – Path to the custom CA_BUNDLE file of the SSL certificate which is used to authenticate the identity of the connection endpoint. Default is None in which case certifi.where() will be used.

Example:

Create a new instance of the ServiceBusClient.
import os
from azure.identity import DefaultAzureCredential
from azure.servicebus import ServiceBusClient
fully_qualified_namespace = os.environ['SERVICE_BUS_FULLY_QUALIFIED_NAMESPACE']
servicebus_client = ServiceBusClient(
    fully_qualified_namespace=fully_qualified_namespace,
    credential=DefaultAzureCredential()
)
close()None[source]

Close down the ServiceBus client. All spawned senders, receivers and underlying connection will be shutdown.

Returns

None

classmethod from_connection_string(conn_str: str, *, retry_total: int = 3, retry_backoff_factor: float = 0.8, retry_backoff_max: float = 120, retry_mode: str = 'exponential', **kwargs: Any)azure.servicebus._servicebus_client.ServiceBusClient[source]

Create a ServiceBusClient from a connection string.

Parameters

conn_str (str) – The connection string of a Service Bus.

Keyword Arguments
  • logging_enable (bool) – Whether to output network trace logs to the logger. Default is False.

  • transport_type (TransportType) – The type of transport protocol that will be used for communicating with the Service Bus service. Default is TransportType.Amqp in which case port 5671 is used. If the port 5671 is unavailable/blocked in the network environment, TransportType.AmqpOverWebsocket could be used instead which uses port 443 for communication.

  • http_proxy (Dict) – HTTP proxy settings. This must be a dictionary with the following keys: ‘proxy_hostname’ (str value) and ‘proxy_port’ (int value). Additionally the following keys may also be present: ‘username’, ‘password’.

  • user_agent (str) – If specified, this will be added in front of the built-in user agent string.

  • retry_total (int) – The total number of attempts to redo a failed operation when an error occurs. Default value is 3.

  • retry_backoff_factor (float) – Delta back-off internal in the unit of second between retries. Default value is 0.8.

  • retry_backoff_max (float) – Maximum back-off interval in the unit of second. Default value is 120.

  • retry_mode (str) – The delay behavior between retry attempts. Supported values are ‘fixed’ or ‘exponential’, where default is ‘exponential’.

  • custom_endpoint_address (str) – The custom endpoint address to use for establishing a connection to the Service Bus service, allowing network requests to be routed through any application gateways or other paths needed for the host environment. Default is None. The format would be like “sb://<custom_endpoint_hostname>:<custom_endpoint_port>”. If port is not specified in the custom_endpoint_address, by default port 443 will be used.

  • connection_verify (str) – Path to the custom CA_BUNDLE file of the SSL certificate which is used to authenticate the identity of the connection endpoint. Default is None in which case certifi.where() will be used.

Return type

ServiceBusClient

Example:

Create a new instance of the ServiceBusClient from connection string.
import os
from azure.servicebus import ServiceBusClient
servicebus_connection_str = os.environ['SERVICE_BUS_CONNECTION_STR']
servicebus_client = ServiceBusClient.from_connection_string(conn_str=servicebus_connection_str)
get_queue_receiver(queue_name: str, *, session_id: Optional[Union[str, Literal[<ServiceBusSessionFilter.NEXT_AVAILABLE: 0>]]] = None, sub_queue: Optional[Union[azure.servicebus._common.constants.ServiceBusSubQueue, str]] = None, receive_mode: Union[azure.servicebus._common.constants.ServiceBusReceiveMode, str] = <ServiceBusReceiveMode.PEEK_LOCK: 'peeklock'>, max_wait_time: Optional[float] = None, auto_lock_renewer: Optional[azure.servicebus._common.auto_lock_renewer.AutoLockRenewer] = None, prefetch_count: int = 0, **kwargs: Any)azure.servicebus._servicebus_receiver.ServiceBusReceiver[source]

Get ServiceBusReceiver for the specific queue.

Parameters

queue_name (str) – The path of specific Service Bus Queue the client connects to.

Keyword Arguments
  • session_id (str or NEXT_AVAILABLE_SESSION) – A specific session from which to receive. This must be specified for a sessionful queue, otherwise it must be None. In order to receive messages from the next available session, set this to ~azure.servicebus.NEXT_AVAILABLE_SESSION.

  • sub_queue (str or ServiceBusSubQueue or None) – If specified, the subqueue this receiver will connect to. This includes the DEAD_LETTER and TRANSFER_DEAD_LETTER queues, holds messages that can’t be delivered to any receiver or messages that can’t be processed. The default is None, meaning connect to the primary queue. Can be assigned values from ServiceBusSubQueue enum or equivalent string values “deadletter” and “transferdeadletter”.

  • receive_mode (Union[ServiceBusReceiveMode, str]) – The receive_mode with which messages will be retrieved from the entity. The two options are PEEK_LOCK and RECEIVE_AND_DELETE. Messages received with PEEK_LOCK must be settled within a given lock period before they will be removed from the queue. Messages received with RECEIVE_AND_DELETE will be immediately removed from the queue, and cannot be subsequently rejected or re-received if the client fails to process the message. The default receive_mode is PEEK_LOCK.

  • max_wait_time (Optional[float]) – The timeout in seconds between received messages after which the receiver will automatically stop receiving. The default value is None, meaning no timeout.

  • auto_lock_renewer (Optional[AutoLockRenewer]) – An ~azure.servicebus.AutoLockRenewer can be provided such that messages are automatically registered on receipt. If the receiver is a session receiver, it will apply to the session instead.

  • prefetch_count (int) – The maximum number of messages to cache with each request to the service. This setting is only for advanced performance tuning. Increasing this value will improve message throughput performance but increase the chance that messages will expire while they are cached if they’re not processed fast enough. The default value is 0, meaning messages will be received from the service and processed one at a time. In the case of prefetch_count being 0, ServiceBusReceiver.receive would try to cache max_message_count (if provided) within its request to the service.

  • client_identifier (str) – A string-based identifier to uniquely identify the receiver instance. Service Bus will associate it with some error messages for easier correlation of errors. If not specified, a unique id will be generated.

Return type

ServiceBusReceiver

Example:

Create a new instance of the ServiceBusReceiver from ServiceBusClient.
import os
from azure.servicebus import ServiceBusClient
servicebus_connection_str = os.environ['SERVICE_BUS_CONNECTION_STR']
queue_name = os.environ['SERVICE_BUS_QUEUE_NAME']
servicebus_client = ServiceBusClient.from_connection_string(conn_str=servicebus_connection_str)
with servicebus_client:
    queue_receiver = servicebus_client.get_queue_receiver(queue_name=queue_name)
get_queue_sender(queue_name: str, **kwargs: Any)azure.servicebus._servicebus_sender.ServiceBusSender[source]

Get ServiceBusSender for the specific queue.

Parameters

queue_name (str) – The path of specific Service Bus Queue the client connects to.

Keyword Arguments

client_identifier (str) – A string-based identifier to uniquely identify the sender instance. Service Bus will associate it with some error messages for easier correlation of errors. If not specified, a unique id will be generated.

Return type

ServiceBusSender

Example:

Create a new instance of the ServiceBusSender from ServiceBusClient.
import os
from azure.servicebus import ServiceBusClient
servicebus_connection_str = os.environ['SERVICE_BUS_CONNECTION_STR']
queue_name = os.environ['SERVICE_BUS_QUEUE_NAME']
servicebus_client = ServiceBusClient.from_connection_string(conn_str=servicebus_connection_str)
with servicebus_client:
    queue_sender = servicebus_client.get_queue_sender(queue_name=queue_name)
get_subscription_receiver(topic_name: str, subscription_name: str, *, session_id: Optional[Union[str, Literal[<ServiceBusSessionFilter.NEXT_AVAILABLE: 0>]]] = None, sub_queue: Optional[Union[azure.servicebus._common.constants.ServiceBusSubQueue, str]] = None, receive_mode: Union[azure.servicebus._common.constants.ServiceBusReceiveMode, str] = <ServiceBusReceiveMode.PEEK_LOCK: 'peeklock'>, max_wait_time: Optional[float] = None, auto_lock_renewer: Optional[azure.servicebus._common.auto_lock_renewer.AutoLockRenewer] = None, prefetch_count: int = 0, **kwargs: Any)azure.servicebus._servicebus_receiver.ServiceBusReceiver[source]

Get ServiceBusReceiver for the specific subscription under the topic.

Parameters
  • topic_name (str) – The name of specific Service Bus Topic the client connects to.

  • subscription_name (str) – The name of specific Service Bus Subscription under the given Service Bus Topic.

Keyword Arguments
  • session_id (str or NEXT_AVAILABLE_SESSION) – A specific session from which to receive. This must be specified for a sessionful subscription, otherwise it must be None. In order to receive messages from the next available session, set this to ~azure.servicebus.NEXT_AVAILABLE_SESSION.

  • sub_queue (str or ServiceBusSubQueue or None) – If specified, the subqueue this receiver will connect to. This includes the DEAD_LETTER and TRANSFER_DEAD_LETTER queues, holds messages that can’t be delivered to any receiver or messages that can’t be processed. The default is None, meaning connect to the primary queue. Can be assigned values from ServiceBusSubQueue enum or equivalent string values “deadletter” and “transferdeadletter”.

  • receive_mode (Union[ServiceBusReceiveMode, str]) – The receive_mode with which messages will be retrieved from the entity. The two options are PEEK_LOCK and RECEIVE_AND_DELETE. Messages received with PEEK_LOCK must be settled within a given lock period before they will be removed from the subscription. Messages received with RECEIVE_AND_DELETE will be immediately removed from the subscription, and cannot be subsequently rejected or re-received if the client fails to process the message. The default receive_mode is PEEK_LOCK.

  • max_wait_time (Optional[float]) – The timeout in seconds between received messages after which the receiver will automatically stop receiving. The default value is None, meaning no timeout.

  • auto_lock_renewer (Optional[AutoLockRenewer]) – An ~azure.servicebus.AutoLockRenewer can be provided such that messages are automatically registered on receipt. If the receiver is a session receiver, it will apply to the session instead.

  • prefetch_count (int) – The maximum number of messages to cache with each request to the service. This setting is only for advanced performance tuning. Increasing this value will improve message throughput performance but increase the chance that messages will expire while they are cached if they’re not processed fast enough. The default value is 0, meaning messages will be received from the service and processed one at a time. In the case of prefetch_count being 0, ServiceBusReceiver.receive would try to cache max_message_count (if provided) within its request to the service.

  • client_identifier (str) – A string-based identifier to uniquely identify the receiver instance. Service Bus will associate it with some error messages for easier correlation of errors. If not specified, a unique id will be generated.

Return type

ServiceBusReceiver

Example:

Create a new instance of the ServiceBusReceiver from ServiceBusClient.
import os
from azure.servicebus import ServiceBusClient
servicebus_connection_str = os.environ['SERVICE_BUS_CONNECTION_STR']
topic_name = os.environ["SERVICE_BUS_TOPIC_NAME"]
subscription_name = os.environ["SERVICE_BUS_SUBSCRIPTION_NAME"]
servicebus_client = ServiceBusClient.from_connection_string(conn_str=servicebus_connection_str)
with servicebus_client:
    subscription_receiver = servicebus_client.get_subscription_receiver(
        topic_name=topic_name,
        subscription_name=subscription_name,
    )
get_topic_sender(topic_name: str, **kwargs: Any)azure.servicebus._servicebus_sender.ServiceBusSender[source]

Get ServiceBusSender for the specific topic.

Parameters

topic_name (str) – The path of specific Service Bus Topic the client connects to.

Keyword Arguments

client_identifier (str) – A string-based identifier to uniquely identify the sender instance. Service Bus will associate it with some error messages for easier correlation of errors. If not specified, a unique id will be generated.

Return type

ServiceBusSender

Example:

Create a new instance of the ServiceBusSender from ServiceBusClient.
import os
from azure.servicebus import ServiceBusClient
servicebus_connection_str = os.environ['SERVICE_BUS_CONNECTION_STR']
topic_name = os.environ['SERVICE_BUS_TOPIC_NAME']
servicebus_client = ServiceBusClient.from_connection_string(conn_str=servicebus_connection_str)
with servicebus_client:
    topic_sender = servicebus_client.get_topic_sender(topic_name=topic_name)
class azure.servicebus.ServiceBusConnectionStringProperties(**kwargs)[source]

Properties of a connection string.

get(key: Any, default: Optional[Any] = None)Any
has_key(k: Any)bool
items()list
keys()list
update(*args: Any, **kwargs: Any)None
values()list
property endpoint

//<FQDN>/

Type

The endpoint for the Service Bus resource. In the format sb

property entity_path

Optional. Represents the name of the queue/topic.

property fully_qualified_namespace

The fully qualified host name for the Service Bus namespace. The namespace format is: <yournamespace>.servicebus.windows.net.

property shared_access_key

The shared_access_key can be used along with the shared_access_key_name as a credential.

property shared_access_key_name

The name of the shared_access_key. This must be used along with the shared_access_key.

property shared_access_signature

This can be provided instead of the shared_access_key_name and the shared_access_key.

class azure.servicebus.ServiceBusMessage(body: Optional[Union[str, bytes]], *, application_properties: Optional[Dict[str, PrimitiveTypes]] = None, session_id: Optional[str] = None, message_id: Optional[str] = None, scheduled_enqueue_time_utc: Optional[datetime.datetime] = None, time_to_live: Optional[datetime.timedelta] = None, content_type: Optional[str] = None, correlation_id: Optional[str] = None, subject: Optional[str] = None, partition_key: Optional[str] = None, to: Optional[str] = None, reply_to: Optional[str] = None, reply_to_session_id: Optional[str] = None, **kwargs: Any)[source]

A Service Bus Message.

Parameters

body (Optional[Union[str, bytes]]) – The data to send in a single message.

Keyword Arguments
  • application_properties (Dict[str, Union[int or float or bool or bytes or str or uuid.UUID or datetime or None]]) – The user defined properties on the message.

  • session_id (Optional[str]) – The session identifier of the message for a sessionful entity.

  • message_id (Optional[str]) – The id to identify the message.

  • scheduled_enqueue_time_utc (Optional[datetime.datetime]) – The utc scheduled enqueue time to the message.

  • time_to_live (Optional[datetime.timedelta]) – The life duration of a message.

  • content_type (Optional[str]) – The content type descriptor.

  • correlation_id (Optional[str]) – The correlation identifier.

  • subject (Optional[str]) – The application specific subject, sometimes referred to as label.

  • partition_key (Optional[str]) – The partition key for sending a message to a partitioned entity.

  • to (Optional[str]) – The to address used for auto_forward chaining scenarios.

  • reply_to (Optional[str]) – The address of an entity to send replies to.

  • reply_to_session_id (Optional[str]) – The session identifier augmenting the reply_to address.

Example:

Sending a message with additional properties
message = ServiceBusMessage(
    "Hello World!!",
    session_id="MySessionID",
    application_properties={'data': 'custom_data'},
    time_to_live=datetime.timedelta(seconds=30),
    label='MyLabel'
)
property application_properties

The user defined properties on the message.

Return type

dict

property body

The body of the Message. The format may vary depending on the body type: For azure.servicebus.amqp.AmqpMessageBodyType.DATA, the body could be bytes or Iterable[bytes]. For azure.servicebus.amqp.AmqpMessageBodyType.SEQUENCE, the body could be List or Iterable[List]. For azure.servicebus.amqp.AmqpMessageBodyType.VALUE, the body could be any type.

Return type

Any

property body_type

The body type of the underlying AMQP message.

Return type

AmqpMessageBodyType

property content_type

The content type descriptor.

Optionally describes the payload of the message, with a descriptor following the format of RFC2045, Section 5, for example “application/json”.

Return type

str

property correlation_id

The correlation identifier.

Allows an application to specify a context for the message for the purposes of correlation, for example reflecting the MessageId of a message that is being replied to.

See Message Routing and Correlation in https://docs.microsoft.com/azure/service-bus-messaging/service-bus-messages-payloads?#message-routing-and-correlation.

Return type

str

property message_id

The id to identify the message.

The message identifier is an application-defined value that uniquely identifies the message and its payload. The identifier is a free-form string and can reflect a GUID or an identifier derived from the application context. If enabled, the duplicate detection (see https://docs.microsoft.com/azure/service-bus-messaging/duplicate-detection) feature identifies and removes second and further submissions of messages with the same message id.

Return type

str

property partition_key

The partition key for sending a message to a partitioned entity.

Setting this value enables assigning related messages to the same internal partition, so that submission sequence order is correctly recorded. The partition is chosen by a hash function over this value and cannot be chosen directly.

See Partitioned queues and topics in https://docs.microsoft.com/azure/service-bus-messaging/service-bus-partitioning.

Return type

str

property raw_amqp_message

Advanced usage only. The internal AMQP message payload that is sent or received.

property reply_to

The address of an entity to send replies to.

This optional and application-defined value is a standard way to express a reply path to the receiver of the message. When a sender expects a reply, it sets the value to the absolute or relative path of the queue or topic it expects the reply to be sent to.

See Message Routing and Correlation in https://docs.microsoft.com/azure/service-bus-messaging/service-bus-messages-payloads?#message-routing-and-correlation.

Return type

str

property reply_to_session_id

The session identifier augmenting the reply_to address.

This value augments the reply_to information and specifies which session id should be set for the reply when sent to the reply entity.

See Message Routing and Correlation in https://docs.microsoft.com/azure/service-bus-messaging/service-bus-messages-payloads?#message-routing-and-correlation.

Return type

str

property scheduled_enqueue_time_utc

The utc scheduled enqueue time to the message.

This property can be used for scheduling when sending a message through ServiceBusSender.send method. If cancelling scheduled messages is required, you should use the ServiceBusSender.schedule method, which returns sequence numbers that can be used for future cancellation. scheduled_enqueue_time_utc is None if not set.

Return type

datetime

property session_id

The session identifier of the message for a sessionful entity.

For sessionful entities, this application-defined value specifies the session affiliation of the message. Messages with the same session identifier are subject to summary locking and enable exact in-order processing and demultiplexing. For non-sessionful entities, this value is ignored.

See Message Sessions in https://docs.microsoft.com/azure/service-bus-messaging/message-sessions.

Return type

str

property subject

The application specific subject, sometimes referred to as a label.

This property enables the application to indicate the purpose of the message to the receiver in a standardized fashion, similar to an email subject line.

Return type

str

property time_to_live

The life duration of a message.

This value is the relative duration after which the message expires, starting from the instant the message has been accepted and stored by the broker, as captured in enqueued_time_utc. When not set explicitly, the assumed value is the DefaultTimeToLive for the respective queue or topic. A message-level time-to-live value cannot be longer than the entity’s time-to-live setting and it is silently adjusted if it does.

See Expiration in https://docs.microsoft.com/azure/service-bus-messaging/message-expiration

Return type

timedelta

property to

The to address.

This property is reserved for future use in routing scenarios and presently ignored by the broker itself. Applications can use this value in rule-driven auto-forward chaining scenarios to indicate the intended logical destination of the message.

See https://docs.microsoft.com/azure/service-bus-messaging/service-bus-auto-forwarding for more details.

Return type

str

class azure.servicebus.ServiceBusMessageBatch(max_size_in_bytes: Optional[int] = None)[source]

A batch of messages.

Sending messages in a batch is more performant than sending individual message. ServiceBusMessageBatch helps you create the maximum allowed size batch of Message to improve sending performance.

Use the add method to add messages until the maximum batch size limit in bytes has been reached - at which point a MessageSizeExceededError will be raised.

Please use the create_message_batch method of ServiceBusSender to create a ServiceBusMessageBatch object instead of instantiating a ServiceBusMessageBatch object directly.

Parameters

max_size_in_bytes (Optional[int]) – The maximum size of bytes data that a ServiceBusMessageBatch object can hold.

add_message(message: Union[azure.servicebus._common.message.ServiceBusMessage, azure.servicebus.amqp._amqp_message.AmqpAnnotatedMessage, Mapping[str, Any]])None[source]

Try to add a single Message to the batch.

The total size of an added message is the sum of its body, properties, etc. If this added size results in the batch exceeding the maximum batch size, a MessageSizeExceededError will be raised.

Parameters

message (Union[ServiceBusMessage, AmqpAnnotatedMessage]) – The Message to be added to the batch.

Return type

None

Raises
class

~azure.servicebus.exceptions.MessageSizeExceededError, when exceeding the size limit.

property max_size_in_bytes

The maximum size of bytes data that a ServiceBusMessageBatch object can hold.

Return type

int

property size_in_bytes

The combined size of the messages in the batch, in bytes.

Return type

int

class azure.servicebus.ServiceBusMessageState(value)[source]

An enumeration.

ACTIVE = 0
DEFERRED = 1
SCHEDULED = 2
class azure.servicebus.ServiceBusReceiveMode(value)[source]

An enumeration.

PEEK_LOCK = 'peeklock'
RECEIVE_AND_DELETE = 'receiveanddelete'
class azure.servicebus.ServiceBusReceivedMessage(message: uamqp.message.Message, receive_mode: Union[azure.servicebus._common.constants.ServiceBusReceiveMode, str] = <ServiceBusReceiveMode.PEEK_LOCK: 'peeklock'>, **kwargs: Any)[source]

A Service Bus Message received from service side.

Variables

auto_renew_error (AutoLockRenewTimeout or AutoLockRenewFailed) – Error when AutoLockRenewer is used and it fails to renew the message lock.

Example:

Checking the properties on a received message.
    messages = servicebus_receiver.receive_messages(max_wait_time=5)
    for message in messages:
        print("Receiving: {}".format(message))
        print("Time to live: {}".format(message.time_to_live))
        print("Sequence number: {}".format(message.sequence_number))
        print("Enqueued Sequence number: {}".format(message.enqueued_sequence_number))
        print("Partition Key: {}".format(message.partition_key))
        print("Application Properties: {}".format(message.application_properties))
        print("Delivery count: {}".format(message.delivery_count))
        print("Message ID: {}".format(message.message_id))
        print("Locked until: {}".format(message.locked_until_utc))
        print("Lock Token: {}".format(message.lock_token))
        print("Enqueued time: {}".format(message.enqueued_time_utc))
property application_properties

The user defined properties on the message.

Return type

dict

property body

The body of the Message. The format may vary depending on the body type: For azure.servicebus.amqp.AmqpMessageBodyType.DATA, the body could be bytes or Iterable[bytes]. For azure.servicebus.amqp.AmqpMessageBodyType.SEQUENCE, the body could be List or Iterable[List]. For azure.servicebus.amqp.AmqpMessageBodyType.VALUE, the body could be any type.

Return type

Any

property body_type

The body type of the underlying AMQP message.

Return type

AmqpMessageBodyType

property content_type

The content type descriptor.

Optionally describes the payload of the message, with a descriptor following the format of RFC2045, Section 5, for example “application/json”.

Return type

str

property correlation_id

The correlation identifier.

Allows an application to specify a context for the message for the purposes of correlation, for example reflecting the MessageId of a message that is being replied to.

See Message Routing and Correlation in https://docs.microsoft.com/azure/service-bus-messaging/service-bus-messages-payloads?#message-routing-and-correlation.

Return type

str

property dead_letter_error_description

Dead letter error description, when the message is received from a deadletter subqueue of an entity.

Return type

str

property dead_letter_reason

Dead letter reason, when the message is received from a deadletter subqueue of an entity.

Return type

str

property dead_letter_source

The name of the queue or subscription that this message was enqueued on, before it was deadlettered. This property is only set in messages that have been dead-lettered and subsequently auto-forwarded from the dead-letter queue to another entity. Indicates the entity in which the message was dead-lettered.

Return type

str

property delivery_count

Number of deliveries that have been attempted for this message. The count is incremented when a message lock expires or the message is explicitly abandoned by the receiver.

Return type

int

property enqueued_sequence_number

For messages that have been auto-forwarded, this property reflects the sequence number that had first been assigned to the message at its original point of submission.

Return type

int

property enqueued_time_utc

The UTC datetime at which the message has been accepted and stored in the entity.

Return type

datetime

property expires_at_utc

The UTC datetime at which the message is marked for removal and no longer available for retrieval from the entity due to expiration. Expiry is controlled by the Message.time_to_live property. This property is computed from Message.enqueued_time_utc + Message.time_to_live.

Return type

datetime

property lock_token

The lock token for the current message serving as a reference to the lock that is being held by the broker in PEEK_LOCK mode.

Return type

UUID or str

property locked_until_utc

The UTC datetime until which the message will be locked in the queue/subscription. When the lock expires, delivery count of hte message is incremented and the message is again available for retrieval.

Return type

datetime.datetime

property message_id

The id to identify the message.

The message identifier is an application-defined value that uniquely identifies the message and its payload. The identifier is a free-form string and can reflect a GUID or an identifier derived from the application context. If enabled, the duplicate detection (see https://docs.microsoft.com/azure/service-bus-messaging/duplicate-detection) feature identifies and removes second and further submissions of messages with the same message id.

Return type

str

property partition_key

The partition key for sending a message to a partitioned entity.

Setting this value enables assigning related messages to the same internal partition, so that submission sequence order is correctly recorded. The partition is chosen by a hash function over this value and cannot be chosen directly.

See Partitioned queues and topics in https://docs.microsoft.com/azure/service-bus-messaging/service-bus-partitioning.

Return type

str

property raw_amqp_message

Advanced usage only. The internal AMQP message payload that is sent or received.

property reply_to

The address of an entity to send replies to.

This optional and application-defined value is a standard way to express a reply path to the receiver of the message. When a sender expects a reply, it sets the value to the absolute or relative path of the queue or topic it expects the reply to be sent to.

See Message Routing and Correlation in https://docs.microsoft.com/azure/service-bus-messaging/service-bus-messages-payloads?#message-routing-and-correlation.

Return type

str

property reply_to_session_id

The session identifier augmenting the reply_to address.

This value augments the reply_to information and specifies which session id should be set for the reply when sent to the reply entity.

See Message Routing and Correlation in https://docs.microsoft.com/azure/service-bus-messaging/service-bus-messages-payloads?#message-routing-and-correlation.

Return type

str

property scheduled_enqueue_time_utc

The utc scheduled enqueue time to the message.

This property can be used for scheduling when sending a message through ServiceBusSender.send method. If cancelling scheduled messages is required, you should use the ServiceBusSender.schedule method, which returns sequence numbers that can be used for future cancellation. scheduled_enqueue_time_utc is None if not set.

Return type

datetime

property sequence_number

The unique number assigned to a message by Service Bus. The sequence number is a unique 64-bit integer assigned to a message as it is accepted and stored by the broker and functions as its true identifier. For partitioned entities, the topmost 16 bits reflect the partition identifier. Sequence numbers monotonically increase. They roll over to 0 when the 48-64 bit range is exhausted.

Return type

int

property session_id

The session identifier of the message for a sessionful entity.

For sessionful entities, this application-defined value specifies the session affiliation of the message. Messages with the same session identifier are subject to summary locking and enable exact in-order processing and demultiplexing. For non-sessionful entities, this value is ignored.

See Message Sessions in https://docs.microsoft.com/azure/service-bus-messaging/message-sessions.

Return type

str

property state

Defaults to Active. Represents the message state of the message. Can be Active, Deferred. or Scheduled.

Return type

ServiceBusMessageState

property subject

The application specific subject, sometimes referred to as a label.

This property enables the application to indicate the purpose of the message to the receiver in a standardized fashion, similar to an email subject line.

Return type

str

property time_to_live

The life duration of a message.

This value is the relative duration after which the message expires, starting from the instant the message has been accepted and stored by the broker, as captured in enqueued_time_utc. When not set explicitly, the assumed value is the DefaultTimeToLive for the respective queue or topic. A message-level time-to-live value cannot be longer than the entity’s time-to-live setting and it is silently adjusted if it does.

See Expiration in https://docs.microsoft.com/azure/service-bus-messaging/message-expiration

Return type

timedelta

property to

The to address.

This property is reserved for future use in routing scenarios and presently ignored by the broker itself. Applications can use this value in rule-driven auto-forward chaining scenarios to indicate the intended logical destination of the message.

See https://docs.microsoft.com/azure/service-bus-messaging/service-bus-auto-forwarding for more details.

Return type

str

class azure.servicebus.ServiceBusReceiver(fully_qualified_namespace: str, credential: Union[TokenCredential, AzureSasCredential, AzureNamedKeyCredential], *, queue_name: Optional[str] = None, topic_name: Optional[str] = None, subscription_name: Optional[str] = None, receive_mode: Union[azure.servicebus._common.constants.ServiceBusReceiveMode, str] = <ServiceBusReceiveMode.PEEK_LOCK: 'peeklock'>, max_wait_time: Optional[float] = None, auto_lock_renewer: Optional[AutoLockRenewer] = None, prefetch_count: int = 0, **kwargs: Any)[source]

The ServiceBusReceiver class defines a high level interface for receiving messages from the Azure Service Bus Queue or Topic Subscription.

The two primary channels for message receipt are receive() to make a single request for messages, and for message in receiver: to continuously receive incoming messages in an ongoing fashion.

Please use the `get_<queue/subscription>_receiver` method of ~azure.servicebus.ServiceBusClient to create a ServiceBusReceiver instance.

Variables
  • fully_qualified_namespace (str) – The fully qualified host name for the Service Bus namespace. The namespace format is: <yournamespace>.servicebus.windows.net.

  • entity_path (str) – The path of the entity that the client connects to.

Parameters
  • fully_qualified_namespace (str) – The fully qualified host name for the Service Bus namespace. The namespace format is: <yournamespace>.servicebus.windows.net.

  • credential (TokenCredential or AzureSasCredential or AzureNamedKeyCredential) – The credential object used for authentication which implements a particular interface for getting tokens. It accepts credential objects generated by the azure-identity library and objects that implement the get_token(self, *scopes) method, or alternatively, an AzureSasCredential can be provided too.

Keyword Arguments
  • queue_name (str) – The path of specific Service Bus Queue the client connects to.

  • topic_name (str) – The path of specific Service Bus Topic which contains the Subscription the client connects to.

  • subscription_name (str) – The path of specific Service Bus Subscription under the specified Topic the client connects to.

  • max_wait_time (Optional[float]) – The timeout in seconds between received messages after which the receiver will automatically stop receiving. The default value is None, meaning no timeout.

  • receive_mode (Union[ServiceBusReceiveMode, str]) – The mode with which messages will be retrieved from the entity. The two options are PEEK_LOCK and RECEIVE_AND_DELETE. Messages received with PEEK_LOCK must be settled within a given lock period before they will be removed from the queue. Messages received with RECEIVE_AND_DELETE will be immediately removed from the queue, and cannot be subsequently abandoned or re-received if the client fails to process the message. The default mode is PEEK_LOCK.

  • logging_enable (bool) – Whether to output network trace logs to the logger. Default is False.

  • transport_type (TransportType) – The type of transport protocol that will be used for communicating with the Service Bus service. Default is TransportType.Amqp.

  • http_proxy (Dict) – HTTP proxy settings. This must be a dictionary with the following keys: ‘proxy_hostname’ (str value) and ‘proxy_port’ (int value). Additionally the following keys may also be present: ‘username’, ‘password’.

  • user_agent (str) – If specified, this will be added in front of the built-in user agent string.

  • auto_lock_renewer (Optional[AutoLockRenewer]) – An ~azure.servicebus.AutoLockRenewer can be provided such that messages are automatically registered on receipt. If the receiver is a session receiver, it will apply to the session instead.

  • prefetch_count (int) – The maximum number of messages to cache with each request to the service. This setting is only for advanced performance tuning. Increasing this value will improve message throughput performance but increase the chance that messages will expire while they are cached if they’re not processed fast enough. The default value is 0, meaning messages will be received from the service and processed one at a time. In the case of prefetch_count being 0, ServiceBusReceiver.receive would try to cache max_message_count (if provided) within its request to the service.

  • client_identifier (str) – A string-based identifier to uniquely identify the client instance. Service Bus will associate it with some error messages for easier correlation of errors. If not specified, a unique id will be generated.

abandon_message(message: azure.servicebus._common.message.ServiceBusReceivedMessage)None[source]

Abandon the message.

This message will be returned to the queue and made available to be received again.

Parameters

message (ServiceBusReceivedMessage) – The received message to be abandoned.

Return type

None

Raises

~azure.servicebus.exceptions.MessageAlreadySettled if the message has been settled.

Raises

~azure.servicebus.exceptions.SessionLockLostError if session lock has already expired.

Raises

~azure.servicebus.exceptions.ServiceBusError when errors happen.

Example:

Abandon a received message.
    messages = servicebus_receiver.receive_messages(max_wait_time=5)
    for message in messages:
        servicebus_receiver.abandon_message(message)
close()None[source]

Close down the handler links (and connection if the handler uses a separate connection).

If the handler has already closed, this operation will do nothing.

Return type

None

complete_message(message: azure.servicebus._common.message.ServiceBusReceivedMessage)None[source]

Complete the message.

This removes the message from the queue.

Parameters

message (ServiceBusReceivedMessage) – The received message to be completed.

Return type

None

Raises

~azure.servicebus.exceptions.MessageAlreadySettled if the message has been settled.

Raises

~azure.servicebus.exceptions.SessionLockLostError if session lock has already expired.

Raises

~azure.servicebus.exceptions.ServiceBusError when errors happen.

Example:

Complete a received message.
    messages = servicebus_receiver.receive_messages(max_wait_time=5)
    for message in messages:
        servicebus_receiver.complete_message(message)
dead_letter_message(message: azure.servicebus._common.message.ServiceBusReceivedMessage, reason: Optional[str] = None, error_description: Optional[str] = None)None[source]

Move the message to the Dead Letter queue.

The Dead Letter queue is a sub-queue that can be used to store messages that failed to process correctly, or otherwise require further inspection or processing. The queue can also be configured to send expired messages to the Dead Letter queue.

Parameters
  • message (ServiceBusReceivedMessage) – The received message to be dead-lettered.

  • reason (Optional[str]) – The reason for dead-lettering the message.

  • error_description (Optional[str]) – The detailed error description for dead-lettering the message.

Return type

None

Raises

~azure.servicebus.exceptions.MessageAlreadySettled if the message has been settled.

Raises

~azure.servicebus.exceptions.SessionLockLostError if session lock has already expired.

Raises

~azure.servicebus.exceptions.ServiceBusError when errors happen.

Example:

Dead letter a received message.
    messages = servicebus_receiver.receive_messages(max_wait_time=5)
    for message in messages:
        servicebus_receiver.dead_letter_message(message)
defer_message(message: azure.servicebus._common.message.ServiceBusReceivedMessage)None[source]

Defers the message.

This message will remain in the queue but must be requested specifically by its sequence number in order to be received.

Parameters

message (ServiceBusReceivedMessage) – The received message to be deferred.

Return type

None

Raises

~azure.servicebus.exceptions.MessageAlreadySettled if the message has been settled.

Raises

~azure.servicebus.exceptions.SessionLockLostError if session lock has already expired.

Raises

~azure.servicebus.exceptions.ServiceBusError when errors happen.

Example:

Defer a received message.
    messages = servicebus_receiver.receive_messages(max_wait_time=5)
    for message in messages:
        servicebus_receiver.defer_message(message)
next()
peek_messages(max_message_count: int = 1, *, sequence_number: int = 0, timeout: Optional[float] = None, **kwargs: Any)List[azure.servicebus._common.message.ServiceBusReceivedMessage][source]

Browse messages currently pending in the queue.

Peeked messages are not removed from queue, nor are they locked. They cannot be completed, deferred or dead-lettered.

Parameters

max_message_count (int) – The maximum number of messages to try and peek. The default value is 1.

Keyword Arguments
  • sequence_number (int) – A message sequence number from which to start browsing messages.

  • timeout (Optional[float]) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Return type

List[ServiceBusReceivedMessage]

Example:

Look at pending messages in the queue.
with servicebus_receiver:
    messages = servicebus_receiver.peek_messages()
    for message in messages:
        print(str(message))
receive_deferred_messages(sequence_numbers: Union[int, List[int]], *, timeout: Optional[float] = None, **kwargs: Any)List[azure.servicebus._common.message.ServiceBusReceivedMessage][source]

Receive messages that have previously been deferred.

When receiving deferred messages from a partitioned entity, all of the supplied sequence numbers must be messages from the same partition.

Parameters

sequence_numbers (Union[int,List[int]]) – A list of the sequence numbers of messages that have been deferred.

Keyword Arguments

timeout (Optional[float]) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Return type

List[ServiceBusReceivedMessage]

Example:

Receive deferred messages from ServiceBus.
with servicebus_receiver:
    deferred_sequenced_numbers = []
    messages = servicebus_receiver.receive_messages(max_wait_time=5)
    for message in messages:
        deferred_sequenced_numbers.append(message.sequence_number)
        print(str(message))
        servicebus_receiver.defer_message(message)

    received_deferred_msg = servicebus_receiver.receive_deferred_messages(
        sequence_numbers=deferred_sequenced_numbers
    )

    for msg in received_deferred_msg:
        servicebus_receiver.complete_message(msg)
receive_messages(max_message_count: Optional[int] = 1, max_wait_time: Optional[float] = None)List[azure.servicebus._common.message.ServiceBusReceivedMessage][source]

Receive a batch of messages at once.

This approach is optimal if you wish to process multiple messages simultaneously, or perform an ad-hoc receive as a single call.

Note that the number of messages retrieved in a single batch will be dependent on whether prefetch_count was set for the receiver. If prefetch_count is not set for the receiver, the receiver would try to cache max_message_count (if provided) messages within the request to the service.

This call will prioritize returning quickly over meeting a specified batch size, and so will return as soon as at least one message is received and there is a gap in incoming messages regardless of the specified batch size.

Parameters
  • max_message_count (Optional[int]) – Maximum number of messages in the batch. Actual number returned will depend on prefetch_count and incoming stream rate. Setting to None will fully depend on the prefetch config. The default value is 1.

  • max_wait_time (Optional[float]) – Maximum time to wait in seconds for the first message to arrive. If no messages arrive, and no timeout is specified, this call will not return until the connection is closed. If specified, an no messages arrive within the timeout period, an empty list will be returned.

Return type

List[ServiceBusReceivedMessage]

Example:

Receive messages from ServiceBus.
with servicebus_receiver:
    messages = servicebus_receiver.receive_messages(max_wait_time=5)
    for message in messages:
        print(str(message))
        servicebus_receiver.complete_message(message)
renew_message_lock(message: azure.servicebus._common.message.ServiceBusReceivedMessage, *, timeout: Optional[float] = None, **kwargs: Any)datetime.datetime[source]

Renew the message lock.

This will maintain the lock on the message to ensure it is not returned to the queue to be reprocessed.

In order to complete (or otherwise settle) the message, the lock must be maintained, and cannot already have expired; an expired lock cannot be renewed.

Messages received via RECEIVE_AND_DELETE mode are not locked, and therefore cannot be renewed. This operation is only available for non-sessionful messages as well.

Parameters

message (ServiceBusReceivedMessage) – The message to renew the lock for.

Keyword Arguments

timeout (Optional[float]) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Returns

The utc datetime the lock is set to expire at.

Return type

datetime.datetime

Raises

TypeError if the message is sessionful.

Raises

~azure.servicebus.exceptions.MessageAlreadySettled if the message has been settled.

Raises

~azure.servicebus.exceptions.MessageLockLostError if message lock has already expired.

Example:

Renew the lock on a received message.
    messages = servicebus_receiver.receive_messages(max_wait_time=5)
    for message in messages:
        servicebus_receiver.renew_message_lock(message)
property client_identifier

Get the ServiceBusReceiver client_identifier associated with the receiver instance.

Return type

str

property session

Get the ServiceBusSession object linked with the receiver. Session is only available to session-enabled entities, it would return None if called on a non-sessionful receiver.

Return type

ServiceBusSession

Example:

Get session from a receiver
    with servicebus_client.get_queue_receiver(queue_name=queue_name, session_id=session_id) as receiver:
        session = receiver.session
class azure.servicebus.ServiceBusSender(fully_qualified_namespace: str, credential: Union[TokenCredential, AzureSasCredential, AzureNamedKeyCredential], *, queue_name: Optional[str] = None, topic_name: Optional[str] = None, **kwargs: Any)[source]

The ServiceBusSender class defines a high level interface for sending messages to the Azure Service Bus Queue or Topic.

Please use the `get_<queue/topic>_sender` method of ~azure.servicebus.ServiceBusClient to create a ServiceBusSender instance.

Variables
  • fully_qualified_namespace (str) – The fully qualified host name for the Service Bus namespace. The namespace format is: <yournamespace>.servicebus.windows.net.

  • entity_name (str) – The name of the entity that the client connects to.

Parameters
  • fully_qualified_namespace (str) – The fully qualified host name for the Service Bus namespace. The namespace format is: <yournamespace>.servicebus.windows.net.

  • credential (TokenCredential or AzureSasCredential or AzureNamedKeyCredential) – The credential object used for authentication which implements a particular interface for getting tokens. It accepts credential objects generated by the azure-identity library and objects that implement the get_token(self, *scopes) method, or alternatively, an AzureSasCredential can be provided too.

Keyword Arguments
  • queue_name (str) – The path of specific Service Bus Queue the client connects to.

  • topic_name (str) – The path of specific Service Bus Topic the client connects to.

  • logging_enable (bool) – Whether to output network trace logs to the logger. Default is False.

  • transport_type (TransportType) – The type of transport protocol that will be used for communicating with the Service Bus service. Default is TransportType.Amqp.

  • http_proxy (Dict) – HTTP proxy settings. This must be a dictionary with the following keys: ‘proxy_hostname’ (str value) and ‘proxy_port’ (int value). Additionally the following keys may also be present: ‘username’, ‘password’.

  • user_agent (str) – If specified, this will be added in front of the built-in user agent string.

  • client_identifier (str) – A string-based identifier to uniquely identify the client instance. Service Bus will associate it with some error messages for easier correlation of errors. If not specified, a unique id will be generated.

cancel_scheduled_messages(sequence_numbers: Union[int, List[int]], *, timeout: Optional[float] = None, **kwargs: Any)None[source]

Cancel one or more messages that have previously been scheduled and are still pending.

Parameters

sequence_numbers (int or list[int]) – The sequence numbers of the scheduled messages.

Keyword Arguments

timeout (float) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Return type

None

Raises

~azure.servicebus.exceptions.ServiceBusError if messages cancellation failed due to message already cancelled or enqueued.

Example:

Cancelling messages scheduled to be sent in future
with servicebus_sender:
    servicebus_sender.cancel_scheduled_messages(sequence_nums)
close()None

Close down the handler links (and connection if the handler uses a separate connection).

If the handler has already closed, this operation will do nothing.

Return type

None

create_message_batch(max_size_in_bytes: Optional[int] = None)azure.servicebus._common.message.ServiceBusMessageBatch[source]

Create a ServiceBusMessageBatch object with the max size of all content being constrained by max_size_in_bytes. The max_size should be no greater than the max allowed message size defined by the service.

Parameters

max_size_in_bytes (Optional[int]) – The maximum size of bytes data that a ServiceBusMessageBatch object can hold. By default, the value is determined by your Service Bus tier.

Return type

ServiceBusMessageBatch

Example:

Create ServiceBusMessageBatch object within limited size
with servicebus_sender:
    batch_message = servicebus_sender.create_message_batch()
    batch_message.add_message(ServiceBusMessage("Single message inside batch"))
schedule_messages(messages: MessageTypes, schedule_time_utc: datetime.datetime, *, timeout: Optional[float] = None, **kwargs: Any)List[int][source]

Send Message or multiple Messages to be enqueued at a specific time. Returns a list of the sequence numbers of the enqueued messages.

Parameters
Keyword Arguments

timeout (float) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Return type

List[int]

Example:

Schedule a message to be sent in future
with servicebus_sender:
    scheduled_time_utc = datetime.datetime.utcnow() + datetime.timedelta(seconds=30)
    scheduled_messages = [ServiceBusMessage("Scheduled message") for _ in range(10)]
    sequence_nums = servicebus_sender.schedule_messages(scheduled_messages, scheduled_time_utc)
send_messages(message: Union[MessageTypes, azure.servicebus._common.message.ServiceBusMessageBatch], *, timeout: Optional[float] = None, **kwargs: Any)None[source]

Sends message and blocks until acknowledgement is received or operation times out.

If a list of messages was provided, attempts to send them as a single batch, throwing a ValueError if they cannot fit in a single batch.

Parameters

message (Union[ServiceBusMessage, ServiceBusMessageBatch, AmqpAnnotatedMessage, List[Union[ServiceBusMessage, AmqpAnnotatedMessage]]]) – The ServiceBus message to be sent.

Keyword Arguments

timeout (Optional[float]) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Return type

None

Raises
class

~azure.servicebus.exceptions.OperationTimeoutError if sending times out.

class

~azure.servicebus.exceptions.MessageSizeExceededError if the size of the message is over service bus frame size limit.

class

~azure.servicebus.exceptions.ServiceBusError when other errors happen such as connection error, authentication error, and any unexpected errors. It’s also the top-level root class of above errors.

Example:

Send message.
with servicebus_sender:
    message = ServiceBusMessage("Hello World")
    servicebus_sender.send_messages(message)
property client_identifier

Get the ServiceBusSender client_identifier associated with the sender instance.

Return type

str

class azure.servicebus.ServiceBusSession(session_id: str, receiver: Union[ServiceBusReceiver, ServiceBusReceiverAsync])[source]

The ServiceBusSession is used for manage session states and lock renewal.

Please use the property `session` on the ServiceBusReceiver to get the corresponding ServiceBusSession object linked with the receiver instead of instantiating a ServiceBusSession object directly.

Variables

auto_renew_error (AutoLockRenewTimeout or AutoLockRenewFailed) – Error when AutoLockRenewer is used and it fails to renew the session lock.

Example:

Get session from a receiver
    with servicebus_client.get_queue_receiver(queue_name=queue_name, session_id=session_id) as receiver:
        session = receiver.session
get_state(*, timeout: Optional[float] = None, **kwargs: Any)bytes[source]

Get the session state.

Returns None if no state has been set.

Keyword Arguments

timeout (float) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Return type

bytes

Example:

Get the session state
    with servicebus_client.get_queue_receiver(queue_name=queue_name, session_id=session_id) as receiver:
        session = receiver.session
        session_state = session.get_state()
renew_lock(*, timeout: Optional[float] = None, **kwargs: Any)datetime.datetime[source]

Renew the session lock.

This operation must be performed periodically in order to retain a lock on the session to continue message processing.

Once the lock is lost the connection will be closed; an expired lock cannot be renewed.

This operation can also be performed as a threaded background task by registering the session with an azure.servicebus.AutoLockRenewer instance.

Keyword Arguments

timeout (float) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Returns

The utc datetime the lock is set to expire at.

Return type

datetime.datetime

Example:

Renew the session lock before it expires
    with servicebus_client.get_queue_receiver(queue_name=queue_name, session_id=session_id) as receiver:
        session = receiver.session
        session.renew_lock()
set_state(state: Union[str, bytes, bytearray], *, timeout: Optional[float] = None, **kwargs: Any)None[source]

Set the session state.

Parameters

state (Union[str, bytes, bytearray]) – The state value.

Keyword Arguments

timeout (float) – The total operation timeout in seconds including all the retries. The value must be greater than 0 if specified. The default value is None, meaning no timeout.

Example:

Set the session state
    with servicebus_client.get_queue_receiver(queue_name=queue_name, session_id=session_id) as receiver:
        session = receiver.session
        session.set_state("START")
property locked_until_utc

The time at which this session’s lock will expire.

Return type

datetime.datetime

property session_id

Session id of the current session.

Return type

str

class azure.servicebus.ServiceBusSessionFilter(value)[source]

An enumeration.

NEXT_AVAILABLE = 0
class azure.servicebus.ServiceBusSubQueue(value)[source]

An enumeration.

DEAD_LETTER = 'deadletter'
TRANSFER_DEAD_LETTER = 'transferdeadletter'
class azure.servicebus.TransportType(value)[source]

Transport type The underlying transport protocol type:

Amqp: AMQP over the default TCP transport protocol, it uses port 5671. AmqpOverWebsocket: Amqp over the Web Sockets transport protocol, it uses port 443.

Amqp = 1
AmqpOverWebsocket = 2
azure.servicebus.parse_connection_string(conn_str)[source]

Parse the connection string into a properties bag containing its component parts.

Parameters

conn_str (str) – The connection string that has to be parsed.

Return type

ServiceBusConnectionStringProperties

Submodules

azure.servicebus.exceptions module

exception azure.servicebus.exceptions.AutoLockRenewFailed(message, *args, **kwargs)[source]

An attempt to renew a lock on a message or session in the background has failed.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.AutoLockRenewTimeout(message, *args, **kwargs)[source]

The time allocated to renew the message or session lock has elapsed.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.MessageAlreadySettled(**kwargs: Any)[source]

Failed to settle the message.

An attempt was made to complete an operation on a message that has already been settled (completed, abandoned, dead-lettered or deferred).

with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.MessageLockLostError(**kwargs: Any)[source]

The lock on the message is lost. Callers should call attempt to receive and process the message again.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.MessageNotFoundError(**kwargs)[source]

The requested message was not found.

Attempt to receive a message with a particular sequence number. This message isn’t found. Make sure the message hasn’t been received already. Check the deadletter queue to see if the message has been deadlettered.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.MessageSizeExceededError(**kwargs)[source]

Message content is larger than the service bus frame size.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.MessagingEntityAlreadyExistsError(**kwargs)[source]

An entity with the same name exists under the same namespace.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.MessagingEntityDisabledError(**kwargs)[source]

The Messaging Entity is disabled. Enable the entity again using Portal.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.MessagingEntityNotFoundError(**kwargs)[source]

A Service Bus resource cannot be found by the Service Bus service.

Entity associated with the operation doesn’t exist or it has been deleted. Please make sure the entity exists.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.OperationTimeoutError(**kwargs)[source]

Operation timed out.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.ServiceBusAuthenticationError(**kwargs)[source]

An error occurred when authenticate the connection.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.ServiceBusAuthorizationError(**kwargs)[source]

An error occurred when authorizing the connection.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.ServiceBusCommunicationError(**kwargs)[source]

There was a general communications error encountered when interacting with the Azure Service Bus service.

Client isn’t able to establish a connection to Service Bus. Make sure the supplied host name is correct and the host is reachable. If your code runs in an environment with a firewall/proxy, ensure that the traffic to the Service Bus domain/IP address and ports isn’t blocked.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.ServiceBusConnectionError(**kwargs)[source]

An error occurred in the connection.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.ServiceBusError(message, *args, **kwargs)[source]

Base exception for all Service Bus errors which can be used for default error handling.

Parameters

message (str) – The message object stringified as ‘message’ attribute

Keyword Arguments

error (Exception) – The original exception if any

Variables
  • exc_type – The exc_type from sys.exc_info()

  • exc_value – The exc_value from sys.exc_info()

  • exc_traceback – The exc_traceback from sys.exc_info()

  • exc_msg – A string formatting of message parameter, exc_type and exc_value

  • message (str) – A stringified version of the message parameter

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.ServiceBusQuotaExceededError(**kwargs)[source]

The quota applied to a Service Bus resource has been exceeded while interacting with the Azure Service Bus service.

The messaging entity has reached its maximum allowable size, or the maximum number of connections to a namespace has been exceeded. Create space in the entity by receiving messages from the entity or its subqueues.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.ServiceBusServerBusyError(**kwargs)[source]

The Azure Service Bus service reports that it is busy in response to a client request to perform an operation.

Service isn’t able to process the request at this time. Client can wait for a period of time, then retry the operation.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.SessionCannotBeLockedError(**kwargs)[source]

The requested session cannot be locked.

Attempt to connect to a session with a specific session ID, but the session is currently locked by another client. Make sure the session is unlocked by other clients.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args
exception azure.servicebus.exceptions.SessionLockLostError(**kwargs: Any)[source]

The lock on the session has expired. Callers should request the session again.

All unsettled messages that have been received can no longer be settled.

raise_with_traceback()
with_traceback()

Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.

args