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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.
# --------------------------------------------------------------------------------------------
"""
An example to show async sending and receiving events behind a proxy.
"""
from typing import Union, Dict
import os
import asyncio
from azure.eventhub.aio import EventHubConsumerClient, EventHubProducerClient
from azure.eventhub import EventData
from azure.identity.aio import DefaultAzureCredential
FULLY_QUALIFIED_NAMESPACE = os.environ["EVENT_HUB_HOSTNAME"]
EVENTHUB_NAME = os.environ["EVENT_HUB_NAME"]
HTTP_PROXY: Dict[str, Union[str, int]] = {
"proxy_hostname": "127.0.0.1", # proxy hostname.
"proxy_port": 3128, # proxy port.
"username": "admin", # username used for proxy authentication if needed.
"password": "123456", # password used for proxy authentication if needed.
}
async def on_event(partition_context, event):
# Put your code here.
print("received event from partition: {}.".format(partition_context.partition_id))
print(event)
async def main():
consumer_client = EventHubConsumerClient(
fully_qualified_namespace=FULLY_QUALIFIED_NAMESPACE,
eventhub_name=EVENTHUB_NAME,
credential=DefaultAzureCredential(),
consumer_group="$Default",
http_proxy=HTTP_PROXY,
)
producer_client = EventHubProducerClient(
fully_qualified_namespace=FULLY_QUALIFIED_NAMESPACE,
eventhub_name=EVENTHUB_NAME,
credential=DefaultAzureCredential(),
http_proxy=HTTP_PROXY,
)
async with producer_client:
event_data_batch = await producer_client.create_batch(max_size_in_bytes=10000)
while True:
try:
event_data_batch.add(EventData("Message inside EventBatchData"))
except ValueError:
# EventDataBatch object reaches max_size.
# New EventDataBatch object can be created here to send more data.
break
await producer_client.send_batch(event_data_batch)
print("Finished sending.")
async with consumer_client:
await consumer_client.receive(on_event=on_event)
print("Finished receiving.")
asyncio.run(main())
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