mirror of
https://github.com/meta-llama/llama-stack.git
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79851d93aa
# What does this PR do?
This commit adds a new authentication system to the Llama Stack server
with support for Kubernetes and custom authentication providers. Key
changes include:
- Implemented KubernetesAuthProvider for validating Kubernetes service
account tokens
- Implemented CustomAuthProvider for validating tokens against external
endpoints - this is the same code that was already present.
- Added test for Kubernetes
- Updated server configuration to support authentication settings
- Added documentation for authentication configuration and usage
The authentication system supports:
- Bearer token validation
- Kubernetes service account token validation
- Custom authentication endpoints
## Test Plan
Setup a Kube cluster using Kind or Minikube.
Run a server with:
```
server:
port: 8321
auth:
provider_type: kubernetes
config:
api_server_url: http://url
ca_cert_path: path/to/cert (optional)
```
Run:
```
curl -s -L -H "Authorization: Bearer $(kubectl create token my-user)" http://127.0.0.1:8321/v1/providers
```
Or replace "my-user" with your service account.
Signed-off-by: Sébastien Han <seb@redhat.com>
372 lines
12 KiB
Python
372 lines
12 KiB
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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# All rights reserved.
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#
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# This source code is licensed under the terms described in the LICENSE file in
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# the root directory of this source tree.
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from unittest.mock import AsyncMock, patch
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import pytest
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from fastapi import FastAPI
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from fastapi.testclient import TestClient
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from llama_stack.distribution.datatypes import AccessAttributes
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from llama_stack.distribution.server.auth import AuthenticationMiddleware
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from llama_stack.distribution.server.auth_providers import AuthProviderConfig, AuthProviderType
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class MockResponse:
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def __init__(self, status_code, json_data):
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self.status_code = status_code
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self._json_data = json_data
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def json(self):
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return self._json_data
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@pytest.fixture
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def mock_auth_endpoint():
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return "http://mock-auth-service/validate"
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@pytest.fixture
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def valid_api_key():
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return "valid_api_key_12345"
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@pytest.fixture
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def invalid_api_key():
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return "invalid_api_key_67890"
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@pytest.fixture
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def valid_token():
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return "valid.jwt.token"
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@pytest.fixture
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def invalid_token():
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return "invalid.jwt.token"
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@pytest.fixture
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def http_app(mock_auth_endpoint):
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app = FastAPI()
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auth_config = AuthProviderConfig(
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provider_type=AuthProviderType.CUSTOM,
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config={"endpoint": mock_auth_endpoint},
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)
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app.add_middleware(AuthenticationMiddleware, auth_config=auth_config)
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@app.get("/test")
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def test_endpoint():
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return {"message": "Authentication successful"}
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return app
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@pytest.fixture
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def k8s_app():
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app = FastAPI()
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auth_config = AuthProviderConfig(
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provider_type=AuthProviderType.KUBERNETES,
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config={"api_server_url": "https://kubernetes.default.svc"},
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)
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app.add_middleware(AuthenticationMiddleware, auth_config=auth_config)
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@app.get("/test")
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def test_endpoint():
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return {"message": "Authentication successful"}
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return app
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@pytest.fixture
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def http_client(http_app):
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return TestClient(http_app)
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@pytest.fixture
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def k8s_client(k8s_app):
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return TestClient(k8s_app)
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@pytest.fixture
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def mock_scope():
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return {
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"type": "http",
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"path": "/models/list",
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"headers": [
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(b"content-type", b"application/json"),
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(b"authorization", b"Bearer test.jwt.token"),
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(b"user-agent", b"test-user-agent"),
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],
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"query_string": b"limit=100&offset=0",
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}
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@pytest.fixture
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def mock_http_middleware(mock_auth_endpoint):
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mock_app = AsyncMock()
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auth_config = AuthProviderConfig(
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provider_type=AuthProviderType.CUSTOM,
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config={"endpoint": mock_auth_endpoint},
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)
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return AuthenticationMiddleware(mock_app, auth_config), mock_app
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@pytest.fixture
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def mock_k8s_middleware():
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mock_app = AsyncMock()
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auth_config = AuthProviderConfig(
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provider_type=AuthProviderType.KUBERNETES,
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config={"api_server_url": "https://kubernetes.default.svc"},
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)
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return AuthenticationMiddleware(mock_app, auth_config), mock_app
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async def mock_post_success(*args, **kwargs):
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return MockResponse(
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200,
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{
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"message": "Authentication successful",
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"access_attributes": {
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"roles": ["admin", "user"],
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"teams": ["ml-team", "nlp-team"],
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"projects": ["llama-3", "project-x"],
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"namespaces": ["research", "production"],
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},
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},
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)
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async def mock_post_failure(*args, **kwargs):
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return MockResponse(401, {"message": "Authentication failed"})
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async def mock_post_exception(*args, **kwargs):
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raise Exception("Connection error")
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# HTTP Endpoint Tests
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def test_missing_auth_header(http_client):
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response = http_client.get("/test")
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assert response.status_code == 401
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assert "Missing or invalid Authorization header" in response.json()["error"]["message"]
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def test_invalid_auth_header_format(http_client):
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response = http_client.get("/test", headers={"Authorization": "InvalidFormat token123"})
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assert response.status_code == 401
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assert "Missing or invalid Authorization header" in response.json()["error"]["message"]
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@patch("httpx.AsyncClient.post", new=mock_post_success)
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def test_valid_http_authentication(http_client, valid_api_key):
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response = http_client.get("/test", headers={"Authorization": f"Bearer {valid_api_key}"})
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assert response.status_code == 200
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assert response.json() == {"message": "Authentication successful"}
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@patch("httpx.AsyncClient.post", new=mock_post_failure)
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def test_invalid_http_authentication(http_client, invalid_api_key):
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response = http_client.get("/test", headers={"Authorization": f"Bearer {invalid_api_key}"})
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assert response.status_code == 401
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assert "Authentication failed" in response.json()["error"]["message"]
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@patch("httpx.AsyncClient.post", new=mock_post_exception)
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def test_http_auth_service_error(http_client, valid_api_key):
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response = http_client.get("/test", headers={"Authorization": f"Bearer {valid_api_key}"})
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assert response.status_code == 401
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assert "Authentication service error" in response.json()["error"]["message"]
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def test_http_auth_request_payload(http_client, valid_api_key, mock_auth_endpoint):
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with patch("httpx.AsyncClient.post") as mock_post:
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mock_response = MockResponse(200, {"message": "Authentication successful"})
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mock_post.return_value = mock_response
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http_client.get(
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"/test?param1=value1¶m2=value2",
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headers={
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"Authorization": f"Bearer {valid_api_key}",
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"User-Agent": "TestClient",
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"Content-Type": "application/json",
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},
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)
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# Check that the auth endpoint was called with the correct payload
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call_args = mock_post.call_args
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assert call_args is not None
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url, kwargs = call_args[0][0], call_args[1]
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assert url == mock_auth_endpoint
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payload = kwargs["json"]
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assert payload["api_key"] == valid_api_key
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assert payload["request"]["path"] == "/test"
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assert "authorization" not in payload["request"]["headers"]
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assert "param1" in payload["request"]["params"]
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assert "param2" in payload["request"]["params"]
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@pytest.mark.asyncio
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async def test_http_middleware_with_access_attributes(mock_http_middleware, mock_scope):
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"""Test HTTP middleware behavior with access attributes"""
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middleware, mock_app = mock_http_middleware
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mock_receive = AsyncMock()
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mock_send = AsyncMock()
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with patch("httpx.AsyncClient.post") as mock_post:
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mock_response = MockResponse(
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200,
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{
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"message": "Authentication successful",
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"access_attributes": {
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"roles": ["admin", "user"],
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"teams": ["ml-team", "nlp-team"],
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"projects": ["llama-3", "project-x"],
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"namespaces": ["research", "production"],
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},
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},
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)
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mock_post.return_value = mock_response
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await middleware(mock_scope, mock_receive, mock_send)
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assert "user_attributes" in mock_scope
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attributes = mock_scope["user_attributes"]
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assert attributes["roles"] == ["admin", "user"]
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assert attributes["teams"] == ["ml-team", "nlp-team"]
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assert attributes["projects"] == ["llama-3", "project-x"]
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assert attributes["namespaces"] == ["research", "production"]
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mock_app.assert_called_once_with(mock_scope, mock_receive, mock_send)
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@pytest.mark.asyncio
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async def test_http_middleware_no_attributes(mock_http_middleware, mock_scope):
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"""Test middleware behavior with no access attributes"""
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middleware, mock_app = mock_http_middleware
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mock_receive = AsyncMock()
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mock_send = AsyncMock()
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with patch("httpx.AsyncClient") as mock_client:
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mock_client_instance = AsyncMock()
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mock_client.return_value.__aenter__.return_value = mock_client_instance
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mock_client_instance.post.return_value = MockResponse(
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200,
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{
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"message": "Authentication successful"
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# No access_attributes
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},
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)
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await middleware(mock_scope, mock_receive, mock_send)
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assert "user_attributes" in mock_scope
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attributes = mock_scope["user_attributes"]
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assert "namespaces" in attributes
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assert attributes["namespaces"] == ["test.jwt.token"]
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# Kubernetes Tests
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def test_missing_auth_header_k8s(k8s_client):
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response = k8s_client.get("/test")
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assert response.status_code == 401
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assert "Missing or invalid Authorization header" in response.json()["error"]["message"]
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def test_invalid_auth_header_format_k8s(k8s_client):
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response = k8s_client.get("/test", headers={"Authorization": "InvalidFormat token123"})
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assert response.status_code == 401
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assert "Missing or invalid Authorization header" in response.json()["error"]["message"]
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@patch("kubernetes.client.ApiClient")
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def test_valid_k8s_authentication(mock_api_client, k8s_client, valid_token):
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# Mock the Kubernetes client
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mock_client = AsyncMock()
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mock_api_client.return_value = mock_client
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# Mock successful token validation
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mock_client.set_default_header = AsyncMock()
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# Mock the token validation to return valid access attributes
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with patch("llama_stack.distribution.server.auth_providers.KubernetesAuthProvider.validate_token") as mock_validate:
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mock_validate.return_value = AccessAttributes(
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roles=["admin"], teams=["ml-team"], projects=["llama-3"], namespaces=["research"]
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)
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response = k8s_client.get("/test", headers={"Authorization": f"Bearer {valid_token}"})
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assert response.status_code == 200
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assert response.json() == {"message": "Authentication successful"}
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@patch("kubernetes.client.ApiClient")
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def test_invalid_k8s_authentication(mock_api_client, k8s_client, invalid_token):
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# Mock the Kubernetes client
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mock_client = AsyncMock()
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mock_api_client.return_value = mock_client
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# Mock failed token validation by raising an exception
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with patch("llama_stack.distribution.server.auth_providers.KubernetesAuthProvider.validate_token") as mock_validate:
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mock_validate.side_effect = ValueError("Invalid or expired token")
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response = k8s_client.get("/test", headers={"Authorization": f"Bearer {invalid_token}"})
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assert response.status_code == 401
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assert "Invalid or expired token" in response.json()["error"]["message"]
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@pytest.mark.asyncio
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async def test_k8s_middleware_with_access_attributes(mock_k8s_middleware, mock_scope):
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middleware, mock_app = mock_k8s_middleware
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mock_receive = AsyncMock()
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mock_send = AsyncMock()
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with patch("kubernetes.client.ApiClient") as mock_api_client:
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mock_client = AsyncMock()
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mock_api_client.return_value = mock_client
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# Mock successful token validation
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mock_client.set_default_header = AsyncMock()
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# Mock token payload with access attributes
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mock_token_parts = ["header", "eyJzdWIiOiJhZG1pbiIsImdyb3VwcyI6WyJtbC10ZWFtIl19", "signature"]
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mock_scope["headers"][1] = (b"authorization", f"Bearer {'.'.join(mock_token_parts)}".encode())
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await middleware(mock_scope, mock_receive, mock_send)
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assert "user_attributes" in mock_scope
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assert mock_scope["user_attributes"]["roles"] == ["admin"]
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assert mock_scope["user_attributes"]["teams"] == ["ml-team"]
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mock_app.assert_called_once_with(mock_scope, mock_receive, mock_send)
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@pytest.mark.asyncio
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async def test_k8s_middleware_no_attributes(mock_k8s_middleware, mock_scope):
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"""Test middleware behavior with no access attributes"""
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middleware, mock_app = mock_k8s_middleware
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mock_receive = AsyncMock()
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mock_send = AsyncMock()
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with patch("kubernetes.client.ApiClient") as mock_api_client:
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mock_client = AsyncMock()
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mock_api_client.return_value = mock_client
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# Mock successful token validation
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mock_client.set_default_header = AsyncMock()
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# Mock token payload without access attributes
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mock_token_parts = ["header", "eyJzdWIiOiJhZG1pbiJ9", "signature"]
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mock_scope["headers"][1] = (b"authorization", f"Bearer {'.'.join(mock_token_parts)}".encode())
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await middleware(mock_scope, mock_receive, mock_send)
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assert "user_attributes" in mock_scope
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attributes = mock_scope["user_attributes"]
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assert "roles" in attributes
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assert attributes["roles"] == ["admin"]
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mock_app.assert_called_once_with(mock_scope, mock_receive, mock_send)
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