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"""
The configuration file would look like this:
{
"authority": "https://login.microsoftonline.com/organizations",
"client_id": "your_client_id came from https://learn.microsoft.com/entra/identity-platform/quickstart-register-app",
"scope": ["User.ReadBasic.All"],
// You can find the other permission names from this document
// https://docs.microsoft.com/en-us/graph/permissions-reference
}
You can then run this sample with a JSON configuration file:
python sample.py parameters.json
"""
import sys # For simplicity, we'll read config file from 1st CLI param sys.argv[1]
import json
import logging
import msal
# Optional logging
# logging.basicConfig(level=logging.DEBUG) # Enable DEBUG log for entire script
# logging.getLogger("msal").setLevel(logging.INFO) # Optionally disable MSAL DEBUG logs
def get_preexisting_rt_and_their_scopes_from_elsewhere():
# Maybe you have an ADAL-powered app like this
# https://github.com/AzureAD/azure-activedirectory-library-for-python/blob/1.2.3/sample/device_code_sample.py#L72
# which uses a resource rather than a scope,
# you need to convert your v1 resource into v2 scopes
# See https://docs.microsoft.com/azure/active-directory/develop/azure-ad-endpoint-comparison#scopes-not-resources
# You may be able to append "/.default" to your v1 resource to form a scope
# See https://docs.microsoft.com/azure/active-directory/develop/v2-permissions-and-consent#the-default-scope
# Or maybe you have an app already talking to Microsoft identity platform v2,
# powered by some 3rd-party auth library, and persist its tokens somehow.
# Either way, you need to extract RTs from there, and return them like this.
return [
("old_rt_1", ["scope1", "scope2"]),
("old_rt_2", ["scope3", "scope4"]),
]
# We will migrate all the old RTs into a new app powered by MSAL
config = json.load(open(sys.argv[1]))
app = msal.PublicClientApplication(
config["client_id"], authority=config["authority"],
# token_cache=... # Default cache is in memory only.
# You can learn how to use SerializableTokenCache from
# https://msal-python.readthedocs.io/en/latest/#msal.SerializableTokenCache
)
# We choose a migration strategy of migrating all RTs in one loop
for old_rt, scopes in get_preexisting_rt_and_their_scopes_from_elsewhere():
result = app.acquire_token_by_refresh_token(old_rt, scopes)
if "error" in result:
print("Discarding unsuccessful RT. Error: ", json.dumps(result, indent=2))
print("Migration completed")
# From now on, those successfully-migrated RTs are saved inside MSAL's cache,
# and becomes available in normal MSAL coding pattern, which is NOT part of migration.
# You can refer to:
# https://github.com/AzureAD/microsoft-authentication-library-for-python/blob/1.2.0/sample/device_flow_sample.py#L42-L60
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