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167 changes: 167 additions & 0 deletions
167
autogpt_platform/autogpt_libs/autogpt_libs/feature_flag/client.py
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Original file line number | Diff line number | Diff line change |
---|---|---|
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import asyncio | ||
import contextlib | ||
import logging | ||
from functools import wraps | ||
from typing import Any, Awaitable, Callable, Dict, Optional, TypeVar, Union, cast | ||
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||
import ldclient | ||
from fastapi import HTTPException | ||
from ldclient import Context, LDClient | ||
from ldclient.config import Config | ||
from typing_extensions import ParamSpec | ||
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from .config import SETTINGS | ||
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logger = logging.getLogger(__name__) | ||
logging.basicConfig(level=logging.DEBUG) | ||
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P = ParamSpec("P") | ||
T = TypeVar("T") | ||
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def get_client() -> LDClient: | ||
"""Get the LaunchDarkly client singleton.""" | ||
return ldclient.get() | ||
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def initialize_launchdarkly() -> None: | ||
sdk_key = SETTINGS.launch_darkly_sdk_key | ||
logger.debug( | ||
f"Initializing LaunchDarkly with SDK key: {'present' if sdk_key else 'missing'}" | ||
) | ||
|
||
if not sdk_key: | ||
logger.warning("LaunchDarkly SDK key not configured") | ||
return | ||
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config = Config(sdk_key) | ||
ldclient.set_config(config) | ||
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if ldclient.get().is_initialized(): | ||
logger.info("LaunchDarkly client initialized successfully") | ||
else: | ||
logger.error("LaunchDarkly client failed to initialize") | ||
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def shutdown_launchdarkly() -> None: | ||
"""Shutdown the LaunchDarkly client.""" | ||
if ldclient.get().is_initialized(): | ||
ldclient.get().close() | ||
logger.info("LaunchDarkly client closed successfully") | ||
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def create_context( | ||
user_id: str, additional_attributes: Optional[Dict[str, Any]] = None | ||
) -> Context: | ||
"""Create LaunchDarkly context with optional additional attributes.""" | ||
builder = Context.builder(str(user_id)).kind("user") | ||
if additional_attributes: | ||
for key, value in additional_attributes.items(): | ||
builder.set(key, value) | ||
return builder.build() | ||
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def feature_flag( | ||
flag_key: str, | ||
default: bool = False, | ||
) -> Callable[ | ||
[Callable[P, Union[T, Awaitable[T]]]], Callable[P, Union[T, Awaitable[T]]] | ||
]: | ||
""" | ||
Decorator for feature flag protected endpoints. | ||
""" | ||
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def decorator( | ||
func: Callable[P, Union[T, Awaitable[T]]] | ||
) -> Callable[P, Union[T, Awaitable[T]]]: | ||
@wraps(func) | ||
async def async_wrapper(*args: P.args, **kwargs: P.kwargs) -> T: | ||
try: | ||
user_id = kwargs.get("user_id") | ||
if not user_id: | ||
raise ValueError("user_id is required") | ||
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if not get_client().is_initialized(): | ||
logger.warning( | ||
f"LaunchDarkly not initialized, using default={default}" | ||
) | ||
is_enabled = default | ||
else: | ||
context = create_context(str(user_id)) | ||
is_enabled = get_client().variation(flag_key, context, default) | ||
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if not is_enabled: | ||
raise HTTPException(status_code=404, detail="Feature not available") | ||
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result = func(*args, **kwargs) | ||
if asyncio.iscoroutine(result): | ||
return await result | ||
return cast(T, result) | ||
except Exception as e: | ||
logger.error(f"Error evaluating feature flag {flag_key}: {e}") | ||
raise | ||
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@wraps(func) | ||
def sync_wrapper(*args: P.args, **kwargs: P.kwargs) -> T: | ||
try: | ||
user_id = kwargs.get("user_id") | ||
if not user_id: | ||
raise ValueError("user_id is required") | ||
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if not get_client().is_initialized(): | ||
logger.warning( | ||
f"LaunchDarkly not initialized, using default={default}" | ||
) | ||
is_enabled = default | ||
else: | ||
context = create_context(str(user_id)) | ||
is_enabled = get_client().variation(flag_key, context, default) | ||
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if not is_enabled: | ||
raise HTTPException(status_code=404, detail="Feature not available") | ||
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return cast(T, func(*args, **kwargs)) | ||
except Exception as e: | ||
logger.error(f"Error evaluating feature flag {flag_key}: {e}") | ||
raise | ||
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return cast( | ||
Callable[P, Union[T, Awaitable[T]]], | ||
async_wrapper if asyncio.iscoroutinefunction(func) else sync_wrapper, | ||
) | ||
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return decorator | ||
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def percentage_rollout( | ||
flag_key: str, | ||
default: bool = False, | ||
) -> Callable[ | ||
[Callable[P, Union[T, Awaitable[T]]]], Callable[P, Union[T, Awaitable[T]]] | ||
]: | ||
"""Decorator for percentage-based rollouts.""" | ||
return feature_flag(flag_key, default) | ||
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def beta_feature( | ||
flag_key: Optional[str] = None, | ||
unauthorized_response: Any = {"message": "Not available in beta"}, | ||
) -> Callable[ | ||
[Callable[P, Union[T, Awaitable[T]]]], Callable[P, Union[T, Awaitable[T]]] | ||
]: | ||
"""Decorator for beta features.""" | ||
actual_key = f"beta-{flag_key}" if flag_key else "beta" | ||
return feature_flag(actual_key, False) | ||
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@contextlib.contextmanager | ||
def mock_flag_variation(flag_key: str, return_value: Any): | ||
"""Context manager for testing feature flags.""" | ||
original_variation = get_client().variation | ||
get_client().variation = lambda key, context, default: ( | ||
return_value if key == flag_key else original_variation(key, context, default) | ||
) | ||
try: | ||
yield | ||
finally: | ||
get_client().variation = original_variation |
45 changes: 45 additions & 0 deletions
45
autogpt_platform/autogpt_libs/autogpt_libs/feature_flag/client_test.py
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,45 @@ | ||
import pytest | ||
from ldclient import LDClient | ||
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from autogpt_libs.feature_flag.client import feature_flag, mock_flag_variation | ||
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@pytest.fixture | ||
def ld_client(mocker): | ||
client = mocker.Mock(spec=LDClient) | ||
mocker.patch("ldclient.get", return_value=client) | ||
client.is_initialized.return_value = True | ||
return client | ||
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@pytest.mark.asyncio | ||
async def test_feature_flag_enabled(ld_client): | ||
ld_client.variation.return_value = True | ||
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@feature_flag("test-flag") | ||
async def test_function(user_id: str): | ||
return "success" | ||
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result = test_function(user_id="test-user") | ||
assert result == "success" | ||
ld_client.variation.assert_called_once() | ||
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@pytest.mark.asyncio | ||
async def test_feature_flag_unauthorized_response(ld_client): | ||
ld_client.variation.return_value = False | ||
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@feature_flag("test-flag") | ||
async def test_function(user_id: str): | ||
return "success" | ||
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result = test_function(user_id="test-user") | ||
assert result == {"error": "disabled"} | ||
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def test_mock_flag_variation(ld_client): | ||
with mock_flag_variation("test-flag", True): | ||
assert ld_client.variation("test-flag", None, False) | ||
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with mock_flag_variation("test-flag", False): | ||
assert ld_client.variation("test-flag", None, False) |
15 changes: 15 additions & 0 deletions
15
autogpt_platform/autogpt_libs/autogpt_libs/feature_flag/config.py
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Original file line number | Diff line number | Diff line change |
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from pydantic import Field | ||
from pydantic_settings import BaseSettings, SettingsConfigDict | ||
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class Settings(BaseSettings): | ||
launch_darkly_sdk_key: str = Field( | ||
default="", | ||
description="The Launch Darkly SDK key", | ||
validation_alias="LAUNCH_DARKLY_SDK_KEY", | ||
) | ||
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model_config = SettingsConfigDict(case_sensitive=True, extra="ignore") | ||
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SETTINGS = Settings() |
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