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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: conditional_operation_sample.py
DESCRIPTION:
This sample demos how to conditional set/get/delete configuration settings synchronously.
USAGE: python conditional_operation_sample.py
Set the environment variables with your own values before running the sample:
1) APPCONFIGURATION_CONNECTION_STRING: Connection String used to access the Azure App Configuration.
"""
import os
from azure.core import MatchConditions
from azure.core.exceptions import ResourceModifiedError
from azure.appconfiguration import AzureAppConfigurationClient, ConfigurationSetting
def main():
CONNECTION_STRING = os.environ["APPCONFIGURATION_CONNECTION_STRING"]
# Create an app config client
client = AzureAppConfigurationClient.from_connection_string(CONNECTION_STRING)
# Unconditional set
config_setting = ConfigurationSetting(
key="MyKey", value="my value", content_type="my content type", tags={"my tag": "my tag value"}
)
client.set_configuration_setting(config_setting)
# Unconditional get
first_get = client.get_configuration_setting(key="MyKey")
if first_get is None:
return print("Error, unconditional set failed.")
print(first_get)
# Conditional get, expect to return None because it is not modified
second_get = client.get_configuration_setting(
key="MyKey", etag=first_get.etag, match_condition=MatchConditions.IfModified
)
print(second_get)
# Conditional set
first_get.value = "new value"
client.set_configuration_setting(configuration_setting=first_get, match_condition=MatchConditions.IfNotModified)
# Conditional set, expect to see error because it is modified
try:
client.set_configuration_setting(configuration_setting=first_get, match_condition=MatchConditions.IfNotModified)
except ResourceModifiedError:
pass
client.delete_configuration_setting(key="MyKey")
if __name__ == "__main__":
main()
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