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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 sending message(s) to and receiving messages from a Service Bus Queue with session enabled asynchronously.
"""
# pylint: disable=C0111
import os
import asyncio
from azure.servicebus import ServiceBusMessage
from azure.servicebus.aio import ServiceBusClient
CONNECTION_STR = os.environ['SERVICE_BUS_CONNECTION_STR']
SESSION_QUEUE_NAME = os.environ["SERVICE_BUS_SESSION_QUEUE_NAME"]
SESSION_ID = os.environ['SERVICE_BUS_SESSION_ID']
async def send_single_message(sender):
message = ServiceBusMessage("Single session message", session_id=SESSION_ID)
await sender.send_messages(message)
async def send_a_list_of_messages(sender):
messages = [ServiceBusMessage("Session Message in list", session_id=SESSION_ID) for _ in range(10)]
await sender.send_messages(messages)
async def send_batch_message(sender):
batch_message = await sender.create_message_batch()
for _ in range(10):
try:
batch_message.add_message(ServiceBusMessage("Session Message inside a ServiceBusMessageBatch", session_id=SESSION_ID))
except ValueError:
# ServiceBusMessageBatch object reaches max_size.
# New ServiceBusMessageBatch object can be created here to send more data.
break
await sender.send_messages(batch_message)
async def receive_batch_messages(receiver):
session = receiver.session
await session.set_state("START")
print("Session state:", await session.get_state())
received_msgs = await receiver.receive_messages(max_message_count=10, max_wait_time=5)
for msg in received_msgs:
print(str(msg))
await receiver.complete_message(msg)
await session.renew_lock()
await session.set_state("END")
print("Session state:", await session.get_state())
async def main():
servicebus_client = ServiceBusClient.from_connection_string(conn_str=CONNECTION_STR)
async with servicebus_client:
sender = servicebus_client.get_queue_sender(queue_name=SESSION_QUEUE_NAME)
async with sender:
await send_single_message(sender)
await send_a_list_of_messages(sender)
await send_batch_message(sender)
print("Send message is done.")
receiver = servicebus_client.get_queue_receiver(queue_name=SESSION_QUEUE_NAME, session_id=SESSION_ID)
async with receiver:
await receive_batch_messages(receiver)
print("Receive is done.")
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
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