Removed OpenAI based context formatting
This commit is contained in:
Adithya Suresh
committed by
Aleix Conchillo Flaqué
Aleix Conchillo Flaqué
parent
88c9e08bd8
commit
05ae8d3ffa
@@ -46,16 +46,6 @@ from pipecat.processors.aggregators.openai_llm_context import (
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from pipecat.processors.frame_processor import FrameDirection
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from pipecat.services.ai_services import LLMService
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try:
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from anthropic import NOT_GIVEN, NotGiven
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except ModuleNotFoundError as e:
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logger.error(f"Exception: {e}")
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logger.error(
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"In order to use Anthropic, you need to `pip install pipecat-ai[anthropic]`. "
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+ "Also, set `ANTHROPIC_API_KEY` environment variable."
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)
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raise Exception(f"Missing module: {e}")
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@dataclass
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class BedrockContextAggregatorPair:
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@@ -69,288 +59,6 @@ class BedrockContextAggregatorPair:
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return self._assistant
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class BedrockLLMService(LLMService):
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"""This class implements inference with AWS Bedrock models including Amazon Nova and Anthropic Claude.
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Requires AWS credentials to be configured in the environment or through boto3 configuration.
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"""
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class InputParams(BaseModel):
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max_tokens: Optional[int] = Field(default_factory=lambda: 4096, ge=1)
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temperature: Optional[float] = Field(default_factory=lambda: 0.7, ge=0.0, le=1.0)
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top_p: Optional[float] = Field(default_factory=lambda: 0.999, ge=0.0, le=1.0)
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stop_sequences: Optional[List[str]] = Field(default_factory=lambda: [])
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latency: Optional[str] = Field(default_factory=lambda: "standard")
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additional_model_request_fields: Optional[Dict[str, Any]] = Field(default_factory=dict)
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def __init__(
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self,
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*,
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aws_access_key: str,
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aws_secret_key: str,
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aws_session_token: Optional[str] = None,
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aws_region: str = "us-east-1",
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model: str,
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params: InputParams = InputParams(),
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client_config: Optional[Config] = None,
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**kwargs,
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):
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super().__init__(**kwargs)
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# Initialize the Bedrock client
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if not client_config:
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client_config = Config(
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connect_timeout=300, # 5 minutes
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read_timeout=300, # 5 minutes
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retries={'max_attempts': 3}
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)
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session = boto3.Session(
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aws_access_key_id=aws_access_key,
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aws_secret_access_key=aws_secret_key,
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aws_session_token=aws_session_token,
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region_name=aws_region
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)
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self._client = session.client(
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service_name='bedrock-runtime',
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config=client_config
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)
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self.set_model_name(model)
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self._settings = {
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"max_tokens": params.max_tokens,
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"temperature": params.temperature,
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"top_p": params.top_p,
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"latency": params.latency,
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"additional_model_request_fields": params.additional_model_request_fields if isinstance(params.additional_model_request_fields, dict) else {},
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}
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# Determine model provider from model ID
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self.model_provider = self._get_model_provider(model)
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logger.info(f"Using AWS Bedrock model: {model} from provider: {self.model_provider}")
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def _get_model_provider(self, model: str) -> str:
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"""Determine the model provider from the model ID"""
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if "anthropic." in model:
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return "anthropic"
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elif "amazon." in model:
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return "amazon"
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else:
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raise ValueError(f"Unsupported model: {model}. Only Anthropic Claude and Amazon Nova model families are supported.")
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def can_generate_metrics(self) -> bool:
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return True
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def create_context_aggregator(
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self,
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context: OpenAILLMContext,
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*,
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user_kwargs: Mapping[str, Any] = {},
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assistant_kwargs: Mapping[str, Any] = {},
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) -> BedrockContextAggregatorPair:
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"""Create an instance of BedrockContextAggregatorPair from an
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OpenAILLMContext. Constructor keyword arguments for both the user and
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assistant aggregators can be provided.
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Args:
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context (OpenAILLMContext): The LLM context.
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user_kwargs (Mapping[str, Any], optional): Additional keyword
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arguments for the user context aggregator constructor. Defaults
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to an empty mapping.
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assistant_kwargs (Mapping[str, Any], optional): Additional keyword
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arguments for the assistant context aggregator
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constructor. Defaults to an empty mapping.
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Returns:
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BedrockContextAggregatorPair: A pair of context aggregators, one
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for the user and one for the assistant, encapsulated in an
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BedrockContextAggregatorPair.
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"""
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context.set_llm_adapter(self.get_llm_adapter())
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if isinstance(context, OpenAILLMContext):
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context = BedrockLLMContext.from_openai_context(context)
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user = BedrockUserContextAggregator(context, **user_kwargs)
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assistant = BedrockAssistantContextAggregator(context, **assistant_kwargs)
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return BedrockContextAggregatorPair(_user=user, _assistant=assistant)
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async def _process_context(self, context: "BedrockLLMContext"):
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# Usage tracking
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prompt_tokens = 0
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completion_tokens = 0
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completion_tokens_estimate = 0
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use_completion_tokens_estimate = False
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try:
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await self.push_frame(LLMFullResponseStartFrame())
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await self.start_processing_metrics()
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# logger.debug(
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# f"{self}: Generating chat with Bedrock model {self.model_name} | [{context.get_messages_for_logging()}]"
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# )
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await self.start_ttfb_metrics()
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# Set up inference config
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inference_config = {
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"maxTokens": self._settings["max_tokens"],
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"temperature": self._settings["temperature"],
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"topP": self._settings["top_p"],
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}
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# Prepare request parameters
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request_params = {
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"modelId": self.model_name,
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"messages": context.messages,
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"inferenceConfig": inference_config,
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"additionalModelRequestFields": self._settings["additional_model_request_fields"]
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}
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# Add system message
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request_params["system"] = [{"text": context.system}]
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# Add tools if present
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if context.tools:
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tool_config = {
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"tools": context.tools
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}
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# Add tool_choice if specified
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if context.tool_choice:
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if context.tool_choice == "auto":
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tool_config["toolChoice"] = {"auto": {}}
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elif context.tool_choice == "none":
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# Skip adding toolChoice for "none"
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pass
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elif isinstance(context.tool_choice, dict) and "function" in context.tool_choice:
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tool_config["toolChoice"] = {
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"tool": {
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"name": context.tool_choice["function"]["name"]
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}
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}
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request_params["toolConfig"] = tool_config
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# Add performance config if latency is specified
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if self._settings["latency"] in ["standard", "optimized"]:
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request_params["performanceConfig"] = {
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"latency": self._settings["latency"]
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}
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logger.debug(f"Calling Bedrock model with: {request_params}")
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# Call Bedrock with streaming
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response = self._client.converse_stream(**request_params)
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await self.stop_ttfb_metrics()
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# Process the streaming response
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tool_use_block = None
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json_accumulator = ""
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for event in response["stream"]:
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# Handle text content
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if "contentBlockDelta" in event:
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delta = event["contentBlockDelta"]["delta"]
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if "text" in delta:
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await self.push_frame(LLMTextFrame(delta["text"]))
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completion_tokens_estimate += self._estimate_tokens(delta["text"])
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elif "toolUse" in delta and "input" in delta["toolUse"]:
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# Handle partial JSON for tool use
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json_accumulator += delta["toolUse"]["input"]
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completion_tokens_estimate += self._estimate_tokens(delta["toolUse"]["input"])
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# Handle tool use start
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elif "contentBlockStart" in event:
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content_block_start = event["contentBlockStart"]['start']
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if "toolUse" in content_block_start:
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tool_use_block = {
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"id": content_block_start["toolUse"].get("toolUseId", ""),
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"name": content_block_start["toolUse"].get("name", "")
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}
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json_accumulator = ""
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# Handle message completion with tool use
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elif "messageStop" in event and "stopReason" in event["messageStop"]:
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if event["messageStop"]["stopReason"] == "tool_use" and tool_use_block:
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try:
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arguments = json.loads(json_accumulator) if json_accumulator else {}
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await self.call_function(
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context=context,
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tool_call_id=tool_use_block["id"],
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function_name=tool_use_block["name"],
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arguments=arguments,
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)
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except json.JSONDecodeError:
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logger.error(f"Failed to parse tool arguments: {json_accumulator}")
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# Handle usage metrics if available
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if "metadata" in event and "usage" in event["metadata"]:
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usage = event["metadata"]["usage"]
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prompt_tokens += usage.get("inputTokens", 0)
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completion_tokens += usage.get("outputTokens", 0)
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except asyncio.CancelledError:
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# If we're interrupted, we won't get a complete usage report. So set our flag to use the
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# token estimate. The reraise the exception so all the processors running in this task
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# also get cancelled.
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use_completion_tokens_estimate = True
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raise
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except httpx.TimeoutException:
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await self._call_event_handler("on_completion_timeout")
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except Exception as e:
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logger.exception(f"{self} exception: {e}")
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finally:
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await self.stop_processing_metrics()
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await self.push_frame(LLMFullResponseEndFrame())
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comp_tokens = (
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completion_tokens
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if not use_completion_tokens_estimate
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else completion_tokens_estimate
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)
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await self._report_usage_metrics(
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prompt_tokens=prompt_tokens,
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completion_tokens=comp_tokens,
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)
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async def process_frame(self, frame: Frame, direction: FrameDirection):
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await super().process_frame(frame, direction)
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context = None
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if isinstance(frame, OpenAILLMContextFrame):
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context = BedrockLLMContext.upgrade_to_bedrock(frame.context)
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elif isinstance(frame, LLMMessagesFrame):
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context = BedrockLLMContext.from_messages(frame.messages)
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elif isinstance(frame, VisionImageRawFrame):
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# This is only useful in very simple pipelines because it creates
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# a new context. Generally we want a context manager to catch
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# UserImageRawFrames coming through the pipeline and add them
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# to the context.
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context = BedrockLLMContext.from_image_frame(frame)
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elif isinstance(frame, LLMUpdateSettingsFrame):
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await self._update_settings(frame.settings)
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else:
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await self.push_frame(frame, direction)
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if context:
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await self._process_context(context)
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def _estimate_tokens(self, text: str) -> int:
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return int(len(re.split(r"[^\w]+", text)) * 1.3)
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async def _report_usage_metrics(
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self,
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prompt_tokens: int,
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completion_tokens: int,
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):
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if prompt_tokens or completion_tokens:
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tokens = LLMTokenUsage(
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prompt_tokens=prompt_tokens,
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completion_tokens=completion_tokens,
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total_tokens=prompt_tokens + completion_tokens,
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)
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await self.start_llm_usage_metrics(tokens)
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class BedrockLLMContext(OpenAILLMContext):
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def __init__(
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self,
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@@ -358,7 +66,7 @@ class BedrockLLMContext(OpenAILLMContext):
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tools: Optional[List[dict]] = None,
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tool_choice: Optional[dict] = None,
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*,
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system: Union[str, NotGiven] = NOT_GIVEN,
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system: Optional[str] = None,
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):
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super().__init__(messages=messages, tools=tools, tool_choice=tool_choice)
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self.system = system
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@@ -375,6 +83,7 @@ class BedrockLLMContext(OpenAILLMContext):
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@classmethod
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def from_openai_context(cls, openai_context: OpenAILLMContext):
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logger.debug("from_openai_context called")
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self = cls(
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messages=openai_context.messages,
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tools=openai_context.tools,
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@@ -621,6 +330,7 @@ class BedrockLLMContext(OpenAILLMContext):
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merging consecutive messages with the same role, and ensuring proper content formatting.
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"""
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# Handle system message if present at the beginning
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logger.debug(f"_restructure_from_bedrock_messages: {self.messages}")
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if self.messages and self.messages[0]["role"] == "system":
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if len(self.messages) == 1:
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self.messages[0]["role"] = "user"
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@@ -653,6 +363,7 @@ class BedrockLLMContext(OpenAILLMContext):
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self.messages.extend(merged_messages)
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def _restructure_from_openai_messages(self):
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logger.debug(f"_restructure_from_openai_messages: {self.messages}")
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# first, map across self._messages calling self.from_standard_message(m) to modify messages in place
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try:
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self._messages[:] = [self.from_standard_message(m) for m in self._messages]
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@@ -794,4 +505,285 @@ class BedrockAssistantContextAggregator(LLMAssistantContextAggregator):
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image=frame.image,
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text=frame.request.context,
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)
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class BedrockLLMService(LLMService):
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"""This class implements inference with AWS Bedrock models including Amazon Nova and Anthropic Claude.
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Requires AWS credentials to be configured in the environment or through boto3 configuration.
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"""
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class InputParams(BaseModel):
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max_tokens: Optional[int] = Field(default_factory=lambda: 4096, ge=1)
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temperature: Optional[float] = Field(default_factory=lambda: 0.7, ge=0.0, le=1.0)
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top_p: Optional[float] = Field(default_factory=lambda: 0.999, ge=0.0, le=1.0)
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stop_sequences: Optional[List[str]] = Field(default_factory=lambda: [])
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latency: Optional[str] = Field(default_factory=lambda: "standard")
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additional_model_request_fields: Optional[Dict[str, Any]] = Field(default_factory=dict)
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def __init__(
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self,
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*,
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aws_access_key: Optional[str] = None,
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aws_secret_key: Optional[str] = None,
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aws_session_token: Optional[str] = None,
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aws_region: str = "us-east-1",
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model: str,
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params: InputParams = InputParams(),
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client_config: Optional[Config] = None,
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**kwargs,
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):
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super().__init__(**kwargs)
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# Initialize the Bedrock client
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if not client_config:
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client_config = Config(
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connect_timeout=300, # 5 minutes
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read_timeout=300, # 5 minutes
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retries={'max_attempts': 3}
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)
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session = boto3.Session(
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aws_access_key_id=aws_access_key,
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aws_secret_access_key=aws_secret_key,
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aws_session_token=aws_session_token,
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region_name=aws_region
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)
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self._client = session.client(
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service_name='bedrock-runtime',
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config=client_config
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)
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self.set_model_name(model)
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self._settings = {
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"max_tokens": params.max_tokens,
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"temperature": params.temperature,
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"top_p": params.top_p,
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"latency": params.latency,
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"additional_model_request_fields": params.additional_model_request_fields if isinstance(params.additional_model_request_fields, dict) else {},
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}
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# Determine model provider from model ID
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self.model_provider = self._get_model_provider(model)
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logger.info(f"Using AWS Bedrock model: {model} from provider: {self.model_provider}")
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def _get_model_provider(self, model: str) -> str:
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"""Determine the model provider from the model ID"""
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if "anthropic." in model:
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return "anthropic"
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elif "amazon." in model:
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return "amazon"
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else:
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raise ValueError(f"Unsupported model: {model}. Only Anthropic Claude and Amazon Nova model families are supported.")
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def can_generate_metrics(self) -> bool:
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return True
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def create_context_aggregator(
|
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self,
|
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context: BedrockLLMContext,
|
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*,
|
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user_kwargs: Mapping[str, Any] = {},
|
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assistant_kwargs: Mapping[str, Any] = {},
|
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) -> BedrockContextAggregatorPair:
|
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"""Create an instance of BedrockContextAggregatorPair from an
|
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OpenAILLMContext. Constructor keyword arguments for both the user and
|
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assistant aggregators can be provided.
|
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|
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Args:
|
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context (OpenAILLMContext): The LLM context.
|
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user_kwargs (Mapping[str, Any], optional): Additional keyword
|
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arguments for the user context aggregator constructor. Defaults
|
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to an empty mapping.
|
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assistant_kwargs (Mapping[str, Any], optional): Additional keyword
|
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arguments for the assistant context aggregator
|
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constructor. Defaults to an empty mapping.
|
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|
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Returns:
|
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BedrockContextAggregatorPair: A pair of context aggregators, one
|
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for the user and one for the assistant, encapsulated in an
|
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BedrockContextAggregatorPair.
|
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"""
|
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context.set_llm_adapter(self.get_llm_adapter())
|
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|
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if isinstance(context, OpenAILLMContext) and not isinstance(context, BedrockLLMContext):
|
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context = BedrockLLMContext.from_openai_context(context)
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user = BedrockUserContextAggregator(context, **user_kwargs)
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assistant = BedrockAssistantContextAggregator(context, **assistant_kwargs)
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return BedrockContextAggregatorPair(_user=user, _assistant=assistant)
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async def _process_context(self, context: "BedrockLLMContext"):
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# Usage tracking
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prompt_tokens = 0
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completion_tokens = 0
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completion_tokens_estimate = 0
|
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use_completion_tokens_estimate = False
|
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try:
|
||||
await self.push_frame(LLMFullResponseStartFrame())
|
||||
await self.start_processing_metrics()
|
||||
|
||||
# logger.debug(
|
||||
# f"{self}: Generating chat with Bedrock model {self.model_name} | [{context.get_messages_for_logging()}]"
|
||||
# )
|
||||
|
||||
await self.start_ttfb_metrics()
|
||||
|
||||
# Set up inference config
|
||||
inference_config = {
|
||||
"maxTokens": self._settings["max_tokens"],
|
||||
"temperature": self._settings["temperature"],
|
||||
"topP": self._settings["top_p"],
|
||||
}
|
||||
|
||||
# Prepare request parameters
|
||||
request_params = {
|
||||
"modelId": self.model_name,
|
||||
"messages": context.messages,
|
||||
"inferenceConfig": inference_config,
|
||||
"additionalModelRequestFields": self._settings["additional_model_request_fields"]
|
||||
}
|
||||
|
||||
# Add system message
|
||||
request_params["system"] = [{"text": context.system}]
|
||||
|
||||
# Add tools if present
|
||||
if context.tools:
|
||||
tool_config = {
|
||||
"tools": context.tools
|
||||
}
|
||||
|
||||
# Add tool_choice if specified
|
||||
if context.tool_choice:
|
||||
if context.tool_choice == "auto":
|
||||
tool_config["toolChoice"] = {"auto": {}}
|
||||
elif context.tool_choice == "none":
|
||||
# Skip adding toolChoice for "none"
|
||||
pass
|
||||
elif isinstance(context.tool_choice, dict) and "function" in context.tool_choice:
|
||||
tool_config["toolChoice"] = {
|
||||
"tool": {
|
||||
"name": context.tool_choice["function"]["name"]
|
||||
}
|
||||
}
|
||||
|
||||
request_params["toolConfig"] = tool_config
|
||||
|
||||
# Add performance config if latency is specified
|
||||
if self._settings["latency"] in ["standard", "optimized"]:
|
||||
request_params["performanceConfig"] = {
|
||||
"latency": self._settings["latency"]
|
||||
}
|
||||
|
||||
logger.debug(f"Calling Bedrock model with: {request_params}")
|
||||
|
||||
# Call Bedrock with streaming
|
||||
response = self._client.converse_stream(**request_params)
|
||||
|
||||
await self.stop_ttfb_metrics()
|
||||
|
||||
# Process the streaming response
|
||||
tool_use_block = None
|
||||
json_accumulator = ""
|
||||
|
||||
for event in response["stream"]:
|
||||
# Handle text content
|
||||
if "contentBlockDelta" in event:
|
||||
delta = event["contentBlockDelta"]["delta"]
|
||||
if "text" in delta:
|
||||
await self.push_frame(LLMTextFrame(delta["text"]))
|
||||
completion_tokens_estimate += self._estimate_tokens(delta["text"])
|
||||
elif "toolUse" in delta and "input" in delta["toolUse"]:
|
||||
# Handle partial JSON for tool use
|
||||
json_accumulator += delta["toolUse"]["input"]
|
||||
completion_tokens_estimate += self._estimate_tokens(delta["toolUse"]["input"])
|
||||
|
||||
# Handle tool use start
|
||||
elif "contentBlockStart" in event:
|
||||
content_block_start = event["contentBlockStart"]['start']
|
||||
if "toolUse" in content_block_start:
|
||||
tool_use_block = {
|
||||
"id": content_block_start["toolUse"].get("toolUseId", ""),
|
||||
"name": content_block_start["toolUse"].get("name", "")
|
||||
}
|
||||
json_accumulator = ""
|
||||
|
||||
# Handle message completion with tool use
|
||||
elif "messageStop" in event and "stopReason" in event["messageStop"]:
|
||||
if event["messageStop"]["stopReason"] == "tool_use" and tool_use_block:
|
||||
try:
|
||||
arguments = json.loads(json_accumulator) if json_accumulator else {}
|
||||
await self.call_function(
|
||||
context=context,
|
||||
tool_call_id=tool_use_block["id"],
|
||||
function_name=tool_use_block["name"],
|
||||
arguments=arguments,
|
||||
)
|
||||
except json.JSONDecodeError:
|
||||
logger.error(f"Failed to parse tool arguments: {json_accumulator}")
|
||||
|
||||
# Handle usage metrics if available
|
||||
if "metadata" in event and "usage" in event["metadata"]:
|
||||
usage = event["metadata"]["usage"]
|
||||
prompt_tokens += usage.get("inputTokens", 0)
|
||||
completion_tokens += usage.get("outputTokens", 0)
|
||||
|
||||
except asyncio.CancelledError:
|
||||
# If we're interrupted, we won't get a complete usage report. So set our flag to use the
|
||||
# token estimate. The reraise the exception so all the processors running in this task
|
||||
# also get cancelled.
|
||||
use_completion_tokens_estimate = True
|
||||
raise
|
||||
except httpx.TimeoutException:
|
||||
await self._call_event_handler("on_completion_timeout")
|
||||
except Exception as e:
|
||||
logger.exception(f"{self} exception: {e}")
|
||||
finally:
|
||||
await self.stop_processing_metrics()
|
||||
await self.push_frame(LLMFullResponseEndFrame())
|
||||
comp_tokens = (
|
||||
completion_tokens
|
||||
if not use_completion_tokens_estimate
|
||||
else completion_tokens_estimate
|
||||
)
|
||||
await self._report_usage_metrics(
|
||||
prompt_tokens=prompt_tokens,
|
||||
completion_tokens=comp_tokens,
|
||||
)
|
||||
|
||||
async def process_frame(self, frame: Frame, direction: FrameDirection):
|
||||
await super().process_frame(frame, direction)
|
||||
|
||||
context = None
|
||||
if isinstance(frame, OpenAILLMContextFrame):
|
||||
context = BedrockLLMContext.upgrade_to_bedrock(frame.context)
|
||||
elif isinstance(frame, LLMMessagesFrame):
|
||||
context = BedrockLLMContext.from_messages(frame.messages)
|
||||
elif isinstance(frame, VisionImageRawFrame):
|
||||
# This is only useful in very simple pipelines because it creates
|
||||
# a new context. Generally we want a context manager to catch
|
||||
# UserImageRawFrames coming through the pipeline and add them
|
||||
# to the context.
|
||||
context = BedrockLLMContext.from_image_frame(frame)
|
||||
elif isinstance(frame, LLMUpdateSettingsFrame):
|
||||
await self._update_settings(frame.settings)
|
||||
else:
|
||||
await self.push_frame(frame, direction)
|
||||
|
||||
if context:
|
||||
await self._process_context(context)
|
||||
|
||||
def _estimate_tokens(self, text: str) -> int:
|
||||
return int(len(re.split(r"[^\w]+", text)) * 1.3)
|
||||
|
||||
async def _report_usage_metrics(
|
||||
self,
|
||||
prompt_tokens: int,
|
||||
completion_tokens: int,
|
||||
):
|
||||
if prompt_tokens or completion_tokens:
|
||||
tokens = LLMTokenUsage(
|
||||
prompt_tokens=prompt_tokens,
|
||||
completion_tokens=completion_tokens,
|
||||
total_tokens=prompt_tokens + completion_tokens,
|
||||
)
|
||||
await self.start_llm_usage_metrics(tokens)
|
||||
|
||||
Reference in New Issue
Block a user