llama-stack/llama_stack/distribution/request_headers.py
2024-09-24 18:35:48 -07:00

50 lines
1.3 KiB
Python

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
import json
import threading
from typing import Any, Dict, List
from .utils.dynamic import instantiate_class_type
_THREAD_LOCAL = threading.local()
def get_request_provider_data() -> Any:
return getattr(_THREAD_LOCAL, "provider_data", None)
def set_request_provider_data(headers: Dict[str, str], validator_classes: List[str]):
if not validator_classes:
return
keys = [
"X-LlamaStack-ProviderData",
"x-llamastack-providerdata",
]
for key in keys:
val = headers.get(key, None)
if val:
break
if not val:
return
try:
val = json.loads(val)
except json.JSONDecodeError:
print("Provider data not encoded as a JSON object!", val)
return
for validator_class in validator_classes:
validator = instantiate_class_type(validator_class)
try:
provider_data = validator(**val)
if provider_data:
_THREAD_LOCAL.provider_data = provider_data
return
except Exception as e:
print("Error parsing provider data", e)