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# coding: utf-8
# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
"""
FILE: sample_authentication_async.py
DESCRIPTION:
These samples demonstrate authenticating a client via:
* connection string
* shared access key
* generating a sas token with which the returned signature can be used with
the credential parameter of any TableServiceClient or TableClient
USAGE:
python sample_authentication_async.py
Set the environment variables with your own values before running the sample:
1) AZURE_STORAGE_CONNECTION_STRING - the connection string to your storage account
2) AZURE_STORAGE_ACCOUNT_URL - the Table service account URL
3) AZURE_STORAGE_ACCOUNT_NAME - the name of the storage account
4) AZURE_STORAGE_ACCESS_KEY - the storage account access key
"""
from datetime import datetime, timedelta
import os
import asyncio
class TableAuthSamples(object):
connection_string = os.getenv("AZURE_TABLES_CONNECTION_STRING")
access_key = os.getenv("AZURE_TABLES_KEY")
account_url = os.getenv("AZURE_TABLES_ACCOUNT_URL")
account_name = os.getenv("AZURE_TABLES_ACCOUNT_NAME")
async def authentication_by_connection_string(self):
# Instantiate a TableServiceClient using a connection string
# [START auth_from_connection_string]
from azure.data.tables.aio import TableServiceClient
async with TableServiceClient.from_connection_string(conn_str=self.connection_string) as table_service:
properties = await table_service.get_service_properties()
print("Connection String: {}".format(properties))
# [END auth_from_connection_string]
async def authentication_by_shared_key(self):
# Instantiate a TableServiceClient using a shared access key
# [START auth_from_shared_key]
from azure.data.tables.aio import TableServiceClient
async with TableServiceClient.from_connection_string(conn_str=self.connection_string) as table_service:
properties = await table_service.get_service_properties()
print("Shared Key: {}".format(properties))
# [END auth_from_shared_key]
async def authentication_by_shared_access_signature(self):
# Instantiate a TableServiceClient using a connection string
# [START auth_by_sas]
from azure.data.tables.aio import TableServiceClient
# Create a SAS token to use for authentication of a client
from azure.data.tables import generate_account_sas, ResourceTypes, AccountSasPermissions
sas_token = generate_account_sas(
self.account_name,
self.access_key,
resource_types=ResourceTypes(service=True),
permission=AccountSasPermissions(read=True),
expiry=datetime.utcnow() + timedelta(hours=1)
)
async with TableServiceClient(account_url=self.account_url, credential=sas_token) as token_auth_table_service:
properties = await token_auth_table_service.get_service_properties()
print("Shared Access Signature: {}".format(properties))
# [END auth_by_sas]
async def main():
sample = TableAuthSamples()
await sample.authentication_by_connection_string()
await sample.authentication_by_shared_key()
await sample.authentication_by_shared_access_signature()
if __name__ == '__main__':
asyncio.run(main())
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