{"slug":"azure-servicebus-py","title":"azure-servicebus-py","summary":"Azure Service Bus SDK for Python messaging. Use for queues, topics, subscriptions, and enterprise messaging patterns. Triggers: \"service bus\", \"ServiceBusClient\", \"queue\", \"topic\", \"subscription\", \"message broker\".","platform":"GitHub Copilot","tags":[],"authorName":"Ciza","authorSlug":"ciza","score":0,"source":"github","price":null,"verified":false,"createdAt":"2026-08-12T21:05:09.742345Z","repo":{"url":"https://github.com/microsoft/skills","stars":3052,"forks":351,"license":"MIT","updatedAt":"2026-09-24T16:38:17Z"},"bodyHtml":"
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name: azure-servicebus-py\ndescription: |\nAzure Service Bus SDK for Python messaging. Use for queues, topics, subscriptions, and enterprise messaging patterns.\nTriggers: \"service bus\", \"ServiceBusClient\", \"queue\", \"topic\", \"subscription\", \"message broker\".\nlicense: MIT\nmetadata:\nauthor: Microsoft\nversion: \"1.0.0\"\npackage: azure-servicebus

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Azure Service Bus SDK for Python

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Enterprise messaging for reliable cloud communication with queues and pub/sub topics.

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Installation

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pip install azure-servicebus azure-identity\n
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Environment Variables

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SERVICEBUS_FULLY_QUALIFIED_NAMESPACE=<namespace>.servicebus.windows.net  # Required for all auth methods\nSERVICEBUS_QUEUE_NAME=myqueue  # Required for queue operations\nSERVICEBUS_TOPIC_NAME=mytopic  # Required for topic operations\nSERVICEBUS_SUBSCRIPTION_NAME=mysubscription  # Required for subscription operations\nAZURE_TOKEN_CREDENTIALS=prod # Required only if DefaultAzureCredential is used in production\n
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Authentication & Lifecycle

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\uD83D\uDD11 Two rules apply to every code sample below:

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  1. Prefer DefaultAzureCredential. It works locally (Azure CLI / VS Code / Developer CLI) and in Azure (managed identity, workload identity) with no code change. Avoid connection strings, account/API keys — they bypass Entra audit and rotation.\n
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    • Local dev: DefaultAzureCredential works as-is.
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    • Production: set AZURE_TOKEN_CREDENTIALS=prod (or AZURE_TOKEN_CREDENTIALS=<specific_credential>) to constrain the credential chain to production-safe credentials.
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    2. \n
  2. Wrap every client in a context manager so HTTP transports, sockets, and token caches are released deterministically:\n
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    • Sync: with <Client>(...) as client:
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    • Async: async with <Client>(...) as client: and async with DefaultAzureCredential() as credential: (from azure.identity.aio)
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    3. \n
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Snippets may abbreviate this setup, but production code should always follow both rules.

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from azure.identity import DefaultAzureCredential, ManagedIdentityCredential\nfrom azure.servicebus import ServiceBusClient\n\n# Local dev: DefaultAzureCredential. Production: set AZURE_TOKEN_CREDENTIALS=prod or AZURE_TOKEN_CREDENTIALS=<specific_credential>\ncredential = DefaultAzureCredential(require_envvar=True)\n# Or use a specific credential directly in production:\n# See https://learn.microsoft.com/python/api/overview/azure/identity-readme?view=azure-python#credential-classes\n# credential = ManagedIdentityCredential()\nnamespace = \"<namespace>.servicebus.windows.net\"\n\nwith ServiceBusClient(\n    fully_qualified_namespace=namespace,\n    credential=credential\n) as client:\n    # Use client here (see following sections for operations)\n    ...\n
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Client Types

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ClientPurposeGet From
ServiceBusClientConnection managementDirect instantiation
ServiceBusSenderSend messagesclient.get_queue_sender() / get_topic_sender()
ServiceBusReceiverReceive messagesclient.get_queue_receiver() / get_subscription_receiver()
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Send Messages (Async)

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import asyncio\nfrom azure.servicebus.aio import ServiceBusClient\nfrom azure.servicebus import ServiceBusMessage\nfrom azure.identity.aio import DefaultAzureCredential\n\nasync def send_messages():\n    credential = DefaultAzureCredential()\n    \n    async with ServiceBusClient(\n        fully_qualified_namespace=\"<namespace>.servicebus.windows.net\",\n        credential=credential\n    ) as client:\n        sender = client.get_queue_sender(queue_name=\"myqueue\")\n        \n        async with sender:\n            # Single message\n            message = ServiceBusMessage(\"Hello, Service Bus!\")\n            await sender.send_messages(message)\n            \n            # Batch of messages\n            messages = [ServiceBusMessage(f\"Message {i}\") for i in range(10)]\n            await sender.send_messages(messages)\n            \n            # Message batch (for size control)\n            batch = await sender.create_message_batch()\n            for i in range(100):\n                try:\n                    batch.add_message(ServiceBusMessage(f\"Batch message {i}\"))\n                except ValueError:  # Batch full\n                    await sender.send_messages(batch)\n                    batch = await sender.create_message_batch()\n                    batch.add_message(ServiceBusMessage(f\"Batch message {i}\"))\n            await sender.send_messages(batch)\n\nasyncio.run(send_messages())\n
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Receive Messages (Async)

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async def receive_messages():\n    credential = DefaultAzureCredential()\n    \n    async with ServiceBusClient(\n        fully_qualified_namespace=\"<namespace>.servicebus.windows.net\",\n        credential=credential\n    ) as client:\n        receiver = client.get_queue_receiver(queue_name=\"myqueue\")\n        \n        async with receiver:\n            # Receive batch\n            messages = await receiver.receive_messages(\n                max_message_count=10,\n                max_wait_time=5  # seconds\n            )\n            \n            for msg in messages:\n                print(f\"Received: {str(msg)}\")\n                await receiver.complete_message(msg)  # Remove from queue\n\nasyncio.run(receive_messages())\n
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Receive Modes

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ModeBehaviorUse Case
PEEK_LOCK (default)Message locked, must complete/abandonReliable processing
RECEIVE_AND_DELETERemoved immediately on receiveAt-most-once delivery
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from azure.servicebus import ServiceBusReceiveMode\n\nreceiver = client.get_queue_receiver(\n    queue_name=\"myqueue\",\n    receive_mode=ServiceBusReceiveMode.RECEIVE_AND_DELETE\n)\n
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Message Settlement

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async with receiver:\n    messages = await receiver.receive_messages(max_message_count=1)\n    \n    for msg in messages:\n        try:\n            # Process message...\n            await receiver.complete_message(msg)  # Success - remove from queue\n        except ProcessingError:\n            await receiver.abandon_message(msg)  # Retry later\n        except PermanentError:\n            await receiver.dead_letter_message(\n                msg,\n                reason=\"ProcessingFailed\",\n                error_description=\"Could not process\"\n            )\n
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ActionEffect
complete_message()Remove from queue (success)
abandon_message()Release lock, retry immediately
dead_letter_message()Move to dead-letter queue
defer_message()Set aside, receive by sequence number
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Topics and Subscriptions

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# Send to topic\nsender = client.get_topic_sender(topic_name=\"mytopic\")\nasync with sender:\n    await sender.send_messages(ServiceBusMessage(\"Topic message\"))\n\n# Receive from subscription\nreceiver = client.get_subscription_receiver(\n    topic_name=\"mytopic\",\n    subscription_name=\"mysubscription\"\n)\nasync with receiver:\n    messages = await receiver.receive_messages(max_message_count=10)\n
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Sessions (FIFO)

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# Send with session\nmessage = ServiceBusMessage(\"Session message\")\nmessage.session_id = \"order-123\"\nawait sender.send_messages(message)\n\n# Receive from specific session\nreceiver = client.get_queue_receiver(\n    queue_name=\"session-queue\",\n    session_id=\"order-123\"\n)\n\n# Receive from next available session\nfrom azure.servicebus import NEXT_AVAILABLE_SESSION\nreceiver = client.get_queue_receiver(\n    queue_name=\"session-queue\",\n    session_id=NEXT_AVAILABLE_SESSION\n)\n
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Scheduled Messages

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from datetime import datetime, timedelta, timezone\n\nmessage = ServiceBusMessage(\"Scheduled message\")\nscheduled_time = datetime.now(timezone.utc) + timedelta(minutes=10)\n\n# Schedule message\nsequence_number = await sender.schedule_messages(message, scheduled_time)\n\n# Cancel scheduled message\nawait sender.cancel_scheduled_messages(sequence_number)\n
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Dead-Letter Queue

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from azure.servicebus import ServiceBusSubQueue\n\n# Receive from dead-letter queue\ndlq_receiver = client.get_queue_receiver(\n    queue_name=\"myqueue\",\n    sub_queue=ServiceBusSubQueue.DEAD_LETTER\n)\n\nasync with dlq_receiver:\n    messages = await dlq_receiver.receive_messages(max_message_count=10)\n    for msg in messages:\n        print(f\"Dead-lettered: {msg.dead_letter_reason}\")\n        await dlq_receiver.complete_message(msg)\n
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Sync Client (for simple scripts)

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from azure.servicebus import ServiceBusClient, ServiceBusMessage\nfrom azure.identity import DefaultAzureCredential\n\nwith ServiceBusClient(\n    fully_qualified_namespace=\"<namespace>.servicebus.windows.net\",\n    credential=DefaultAzureCredential()\n) as client:\n    with client.get_queue_sender(\"myqueue\") as sender:\n        sender.send_messages(ServiceBusMessage(\"Sync message\"))\n    \n    with client.get_queue_receiver(\"myqueue\") as receiver:\n        for msg in receiver:\n            print(str(msg))\n            receiver.complete_message(msg)\n
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Best Practices

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  1. Pick sync OR async and stay consistent. Do not mix azure.xxx sync clients with azure.xxx.aio async clients in the same call path. Choose one mode per module.
    2. \n
  2. Always use context managers for clients and async credentials. Wrap every client in with Client(...) as client: (sync) or async with Client(...) as client: (async) for proper cleanup. For async DefaultAzureCredential from azure.identity.aio, also use async with credential: so tokens and transports are cleaned up.
    3. \n
  3. Use DefaultAzureCredential for portable auth across local dev and Azure (avoid connection strings / API keys when possible).
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  4. Use async client for production workloads
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  5. Complete messages after successful processing
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  6. Use dead-letter queue for poison messages
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  7. Use sessions for ordered, FIFO processing
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  8. Use message batches for high-throughput scenarios
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  9. Set max_wait_time to avoid infinite blocking
    10. \n
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Reference Files

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FileContents
references/patterns.mdCompeting consumers, sessions, retry patterns, request-response, transactions
references/dead-letter.mdDLQ handling, poison messages, reprocessing strategies
scripts/setup_servicebus.pyCLI for queue/topic/subscription management and DLQ monitoring
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