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feat: fine grained access control policy

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This allows a set of rules to be defined for determining access to resources.

Signed-off-by: Gordon Sim <gsim@redhat.com>
This commit is contained in:
Gordon Sim 2025-05-06 18:54:58 +01:00
parent 9623d5d230
commit 01ad876012
20 changed files with 724 additions and 214 deletions
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22
llama_stack/distribution/request_headers.py
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@ -18,15 +18,23 @@ log = logging.getLogger(__name__)
PROVIDER_DATA_VAR = contextvars.ContextVar("provider_data", default=None)
class User:
principal: str
# further attributes that may be used for access control decisions
attributes: dict[str, list[str]]
def __init__(self, principal: str, attributes: dict[str, list[str]]):
self.principal = principal
self.attributes = attributes
class RequestProviderDataContext(AbstractContextManager):
"""Context manager for request provider data"""
def __init__(
self, provider_data: dict[str, Any] | None = None, auth_attributes: dict[str, list[str]] | None = None
):
def __init__(self, provider_data: dict[str, Any] | None = None, user: User | None = None):
self.provider_data = provider_data or {}
if auth_attributes:
self.provider_data["__auth_attributes"] = auth_attributes
if user:
self.provider_data["__authenticated_user"] = user
self.token = None
@ -95,9 +103,9 @@ def request_provider_data_context(
return RequestProviderDataContext(provider_data, auth_attributes)
def get_auth_attributes() -> dict[str, list[str]] | None:
def get_authenticated_user() -> User | None:
"""Helper to retrieve auth attributes from the provider data context"""
provider_data = PROVIDER_DATA_VAR.get()
if not provider_data:
return None
return provider_data.get("__auth_attributes")
return provider_data.get("__authenticated_user")