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https://github.com/meta-llama/llama-stack.git
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2089427d60
PR #201 had made several changes while trying to fix issues with getting the stream=False branches of inference and agents API working. As part of this, it made a change which was slightly gratuitous. Namely, making chat_completion() and brethren "def" instead of "async def". The rationale was that this allowed the user (within llama-stack) of this to use it as: ``` async for chunk in api.chat_completion(params) ``` However, it causes unnecessary confusion for several folks. Given that clients (e.g., llama-stack-apps) anyway use the SDK methods (which are completely isolated) this choice was not ideal. Let's revert back so the call now looks like: ``` async for chunk in await api.chat_completion(params) ``` Bonus: Added a completion() implementation for the meta-reference provider. Technically should have been another PR :)
158 lines
4.7 KiB
Python
158 lines
4.7 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 typing import Any, AsyncGenerator, Dict, List
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from llama_stack.distribution.datatypes import RoutingTable
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from llama_stack.apis.memory import * # noqa: F403
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from llama_stack.apis.inference import * # noqa: F403
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from llama_stack.apis.safety import * # noqa: F403
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class MemoryRouter(Memory):
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"""Routes to an provider based on the memory bank identifier"""
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def __init__(
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self,
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routing_table: RoutingTable,
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) -> None:
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self.routing_table = routing_table
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async def initialize(self) -> None:
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pass
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async def shutdown(self) -> None:
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pass
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async def register_memory_bank(self, memory_bank: MemoryBankDef) -> None:
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await self.routing_table.register_memory_bank(memory_bank)
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async def insert_documents(
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self,
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bank_id: str,
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documents: List[MemoryBankDocument],
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ttl_seconds: Optional[int] = None,
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) -> None:
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return await self.routing_table.get_provider_impl(bank_id).insert_documents(
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bank_id, documents, ttl_seconds
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)
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async def query_documents(
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self,
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bank_id: str,
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query: InterleavedTextMedia,
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params: Optional[Dict[str, Any]] = None,
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) -> QueryDocumentsResponse:
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return await self.routing_table.get_provider_impl(bank_id).query_documents(
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bank_id, query, params
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)
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class InferenceRouter(Inference):
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"""Routes to an provider based on the model"""
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def __init__(
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self,
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routing_table: RoutingTable,
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) -> None:
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self.routing_table = routing_table
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async def initialize(self) -> None:
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pass
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async def shutdown(self) -> None:
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pass
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async def register_model(self, model: ModelDef) -> None:
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await self.routing_table.register_model(model)
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async def chat_completion(
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self,
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model: str,
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messages: List[Message],
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sampling_params: Optional[SamplingParams] = SamplingParams(),
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tools: Optional[List[ToolDefinition]] = None,
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tool_choice: Optional[ToolChoice] = ToolChoice.auto,
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tool_prompt_format: Optional[ToolPromptFormat] = ToolPromptFormat.json,
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stream: Optional[bool] = False,
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logprobs: Optional[LogProbConfig] = None,
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) -> AsyncGenerator:
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params = dict(
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model=model,
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messages=messages,
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sampling_params=sampling_params,
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tools=tools or [],
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tool_choice=tool_choice,
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tool_prompt_format=tool_prompt_format,
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stream=stream,
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logprobs=logprobs,
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)
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provider = self.routing_table.get_provider_impl(model)
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if stream:
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return (chunk async for chunk in await provider.chat_completion(**params))
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else:
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return await provider.chat_completion(**params)
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async def completion(
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self,
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model: str,
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content: InterleavedTextMedia,
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sampling_params: Optional[SamplingParams] = SamplingParams(),
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stream: Optional[bool] = False,
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logprobs: Optional[LogProbConfig] = None,
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) -> AsyncGenerator:
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provider = self.routing_table.get_provider_impl(model)
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params = dict(
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model=model,
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content=content,
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sampling_params=sampling_params,
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stream=stream,
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logprobs=logprobs,
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)
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if stream:
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return (chunk async for chunk in await provider.completion(**params))
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else:
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return await provider.completion(**params)
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async def embeddings(
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self,
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model: str,
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contents: List[InterleavedTextMedia],
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) -> EmbeddingsResponse:
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return await self.routing_table.get_provider_impl(model).embeddings(
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model=model,
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contents=contents,
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)
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class SafetyRouter(Safety):
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def __init__(
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self,
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routing_table: RoutingTable,
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) -> None:
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self.routing_table = routing_table
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async def initialize(self) -> None:
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pass
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async def shutdown(self) -> None:
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pass
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async def register_shield(self, shield: ShieldDef) -> None:
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await self.routing_table.register_shield(shield)
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async def run_shield(
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self,
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shield_type: str,
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messages: List[Message],
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params: Dict[str, Any] = None,
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) -> RunShieldResponse:
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return await self.routing_table.get_provider_impl(shield_type).run_shield(
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shield_type=shield_type,
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messages=messages,
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params=params,
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)
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