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#!/usr/bin/env python
# --------------------------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for license information.
# --------------------------------------------------------------------------------------------
"""
Example to show receiving deferred message from a Service Bus Queue.
"""
import os
from typing import List
from azure.servicebus import ServiceBusMessage, ServiceBusClient
from azure.identity import DefaultAzureCredential
FULLY_QUALIFIED_NAMESPACE = os.environ["SERVICEBUS_FULLY_QUALIFIED_NAMESPACE"]
QUEUE_NAME = os.environ["SERVICEBUS_QUEUE_NAME"]
credential = DefaultAzureCredential()
servicebus_client = ServiceBusClient(FULLY_QUALIFIED_NAMESPACE, credential)
with servicebus_client:
sender = servicebus_client.get_queue_sender(queue_name=QUEUE_NAME)
messages = [ServiceBusMessage("Message to be deferred") for _ in range(10)]
with sender:
sender.send_messages(messages)
receiver = servicebus_client.get_queue_receiver(queue_name=QUEUE_NAME)
with receiver:
received_msgs = receiver.receive_messages(max_message_count=10, max_wait_time=5)
deferred_sequenced_numbers = []
for msg in received_msgs:
print("Deferring msg: {}".format(str(msg)))
if msg.sequence_number:
deferred_sequenced_numbers.append(msg.sequence_number)
receiver.defer_message(msg)
if deferred_sequenced_numbers:
received_deferred_msg = receiver.receive_deferred_messages(sequence_numbers=deferred_sequenced_numbers)
for msg in received_deferred_msg:
print("Completing deferred msg: {}".format(str(msg)))
receiver.complete_message(msg)
else:
print("No messages received.")
print("Receive is done.")
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