forked from phoenix-oss/llama-stack-mirror
34ab7a3b6c
Lint check in main branch is failing. This fixes the lint check after we moved to ruff in https://github.com/meta-llama/llama-stack/pull/921. We need to move to a `ruff.toml` file as well as fixing and ignoring some additional checks. Signed-off-by: Yuan Tang <terrytangyuan@gmail.com>
112 lines
4.2 KiB
Python
112 lines
4.2 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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import json
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import logging
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from typing import Any, Dict, List
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from llama_stack.apis.inference import Message
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from llama_stack.apis.safety import (
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RunShieldResponse,
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Safety,
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SafetyViolation,
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ViolationLevel,
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)
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from llama_stack.apis.shields import Shield
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from llama_stack.providers.datatypes import ShieldsProtocolPrivate
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from llama_stack.providers.utils.bedrock.client import create_bedrock_client
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from .config import BedrockSafetyConfig
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logger = logging.getLogger(__name__)
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class BedrockSafetyAdapter(Safety, ShieldsProtocolPrivate):
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def __init__(self, config: BedrockSafetyConfig) -> None:
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self.config = config
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self.registered_shields = []
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async def initialize(self) -> None:
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try:
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self.bedrock_runtime_client = create_bedrock_client(self.config)
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self.bedrock_client = create_bedrock_client(self.config, "bedrock")
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except Exception as e:
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raise RuntimeError("Error initializing BedrockSafetyAdapter") from e
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async def shutdown(self) -> None:
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pass
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async def register_shield(self, shield: Shield) -> None:
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response = self.bedrock_client.list_guardrails(
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guardrailIdentifier=shield.provider_resource_id,
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)
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if (
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not response["guardrails"]
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or len(response["guardrails"]) == 0
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or response["guardrails"][0]["version"] != shield.params["guardrailVersion"]
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):
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raise ValueError(
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f"Shield {shield.provider_resource_id} with version {shield.params['guardrailVersion']} not found in Bedrock"
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)
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async def run_shield(
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self, shield_id: str, messages: List[Message], params: Dict[str, Any] = None
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) -> RunShieldResponse:
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shield = await self.shield_store.get_shield(shield_id)
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if not shield:
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raise ValueError(f"Shield {shield_id} not found")
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"""This is the implementation for the bedrock guardrails. The input to the guardrails is to be of this format
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```content = [
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{
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"text": {
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"text": "Is the AB503 Product a better investment than the S&P 500?"
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}
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}
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]```
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However the incoming messages are of this type UserMessage(content=....) coming from
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https://github.com/meta-llama/llama-models/blob/main/models/llama3/api/datatypes.py
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They contain content, role . For now we will extract the content and default the "qualifiers": ["query"]
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"""
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shield_params = shield.params
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logger.debug(f"run_shield::{shield_params}::messages={messages}")
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# - convert the messages into format Bedrock expects
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content_messages = []
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for message in messages:
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content_messages.append({"text": {"text": message.content}})
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logger.debug(f"run_shield::final:messages::{json.dumps(content_messages, indent=2)}:")
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response = self.bedrock_runtime_client.apply_guardrail(
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guardrailIdentifier=shield.provider_resource_id,
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guardrailVersion=shield_params["guardrailVersion"],
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source="OUTPUT", # or 'INPUT' depending on your use case
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content=content_messages,
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)
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if response["action"] == "GUARDRAIL_INTERVENED":
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user_message = ""
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metadata = {}
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for output in response["outputs"]:
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# guardrails returns a list - however for this implementation we will leverage the last values
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user_message = output["text"]
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for assessment in response["assessments"]:
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# guardrails returns a list - however for this implementation we will leverage the last values
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metadata = dict(assessment)
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return RunShieldResponse(
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violation=SafetyViolation(
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user_message=user_message,
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violation_level=ViolationLevel.ERROR,
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metadata=metadata,
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)
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)
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return RunShieldResponse()
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