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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 scheduling messages to and cancelling messages from a Service Bus Queue asynchronously.
"""
import os
import asyncio
import datetime
from azure.servicebus.aio import ServiceBusClient
from azure.servicebus import ServiceBusMessage
from azure.identity.aio import DefaultAzureCredential
FULLY_QUALIFIED_NAMESPACE = os.environ["SERVICEBUS_FULLY_QUALIFIED_NAMESPACE"]
QUEUE_NAME = os.environ["SERVICEBUS_QUEUE_NAME"]
async def schedule_single_message(sender):
message = ServiceBusMessage("ServiceBusMessage to be scheduled")
scheduled_time_utc = datetime.datetime.utcnow() + datetime.timedelta(seconds=30)
sequence_number = await sender.schedule_messages(message, scheduled_time_utc)
return sequence_number
async def schedule_multiple_messages(sender):
messages_to_schedule = []
for _ in range(10):
messages_to_schedule.append(ServiceBusMessage("Message to be scheduled"))
scheduled_time_utc = datetime.datetime.utcnow() + datetime.timedelta(seconds=30)
sequence_numbers = await sender.schedule_messages(messages_to_schedule, scheduled_time_utc)
return sequence_numbers
async def main():
credential = DefaultAzureCredential()
servicebus_client = ServiceBusClient(FULLY_QUALIFIED_NAMESPACE, credential, logging_enable=True)
async with servicebus_client:
sender = servicebus_client.get_queue_sender(queue_name=QUEUE_NAME)
async with sender:
sequence_number = await schedule_single_message(sender)
print("Single message is scheduled and sequence number is {}".format(sequence_number))
sequence_numbers = await schedule_multiple_messages(sender)
print("Multiple messages are scheduled and sequence numbers are {}".format(sequence_numbers))
await sender.cancel_scheduled_messages(sequence_number)
await sender.cancel_scheduled_messages(sequence_numbers)
print("All scheduled messages are cancelled.")
asyncio.run(main())
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