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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 streaming sending events with different options to an Event Hub asynchronously.
"""
# pylint: disable=C0111
import time
import asyncio
import os
from azure.eventhub.aio import EventHubProducerClient
from azure.eventhub import EventData
CONNECTION_STR = os.environ['EVENT_HUB_CONN_STR']
EVENTHUB_NAME = os.environ['EVENT_HUB_NAME']
async def run():
producer = EventHubProducerClient.from_connection_string(
conn_str=CONNECTION_STR,
eventhub_name=EVENTHUB_NAME
)
to_send_message_cnt = 500
bytes_per_message = 256
async with producer:
event_data_batch = await producer.create_batch()
for i in range(to_send_message_cnt):
event_data = EventData('D' * bytes_per_message)
try:
event_data_batch.add(event_data)
except ValueError:
await producer.send_batch(event_data_batch)
event_data_batch = await producer.create_batch()
event_data_batch.add(event_data)
if len(event_data_batch) > 0:
await producer.send_batch(event_data_batch)
loop = asyncio.get_event_loop()
start_time = time.time()
loop.run_until_complete(run())
print("Send messages in {} seconds.".format(time.time() - start_time))
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