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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.
"""
# pylint: disable=C0111
import os
import datetime
from azure.servicebus import ServiceBusClient, ServiceBusMessage
CONNECTION_STR = os.environ["SERVICE_BUS_CONNECTION_STR"]
TOPIC_NAME = os.environ["SERVICE_BUS_TOPIC_NAME"]
def schedule_single_message(sender):
message = ServiceBusMessage("Message to be scheduled")
scheduled_time_utc = datetime.datetime.utcnow() + datetime.timedelta(seconds=30)
sequence_number = sender.schedule_messages(message, scheduled_time_utc)
return sequence_number
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 = sender.schedule_messages(
messages_to_schedule, scheduled_time_utc
)
return sequence_numbers
def main():
servicebus_client = ServiceBusClient.from_connection_string(
conn_str=CONNECTION_STR, logging_enable=True
)
with servicebus_client:
sender = servicebus_client.get_topic_sender(topic_name=TOPIC_NAME)
with sender:
sequence_number = schedule_single_message(sender)
print(
"Single message is scheduled and sequence number is {}".format(
sequence_number
)
)
sequence_numbers = schedule_multiple_messages(sender)
print(
"Multiple messages are scheduled and sequence numbers are {}".format(
sequence_numbers
)
)
sender.cancel_scheduled_messages(sequence_number)
sender.cancel_scheduled_messages(sequence_numbers)
print("All scheduled messages are cancelled.")
if __name__ == "__main__":
main()
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