forked from phoenix-oss/llama-stack-mirror
78 lines
2.6 KiB
Python
78 lines
2.6 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 together import Together
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from llama_stack.distribution.request_headers import get_request_provider_data
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from .config import TogetherProviderDataValidator, TogetherSafetyConfig
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class TogetherSafetyImpl(Safety):
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def __init__(self, config: TogetherSafetyConfig) -> None:
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self.config = config
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async def initialize(self) -> None:
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pass
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async def run_shield(
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self, shield_type: str, messages: List[Message], params: Dict[str, Any] = None
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) -> RunShieldResponse:
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if shield_type != "llama_guard":
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raise ValueError(f"shield type {shield_type} is not supported")
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provider_data = get_request_provider_data()
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together_api_key = None
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if provider_data is not None:
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if not isinstance(provider_data, TogetherProviderDataValidator):
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raise ValueError(
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'Pass Together API Key in the header X-LlamaStack-ProviderData as { "together_api_key": <your api key>}'
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)
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together_api_key = provider_data.together_api_key
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if not together_api_key:
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together_api_key = self.config.api_key
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if not together_api_key:
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raise ValueError("The API key must be provider in the header or config")
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# messages can have role assistant or user
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api_messages = []
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for message in messages:
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if message.role in (Role.user.value, Role.assistant.value):
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api_messages.append({"role": message.role, "content": message.content})
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violation = await get_safety_response(together_api_key, api_messages)
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return RunShieldResponse(violation=violation)
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async def get_safety_response(
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api_key: str, messages: List[Dict[str, str]]
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) -> Optional[SafetyViolation]:
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client = Together(api_key=api_key)
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response = client.chat.completions.create(
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messages=messages, model="meta-llama/Meta-Llama-Guard-3-8B"
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)
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if len(response.choices) == 0:
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return None
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response_text = response.choices[0].message.content
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if response_text == "safe":
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return None
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parts = response_text.split("\n")
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if len(parts) != 2:
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return None
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if parts[0] == "unsafe":
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return SafetyViolation(
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violation_level=ViolationLevel.ERROR,
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user_message="unsafe",
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metadata={"violation_type": parts[1]},
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)
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return None
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