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[API Updates] Model / shield / memory-bank routing + agent persistence + support for private headers (#92)

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This is yet another of those large PRs (hopefully we will have less and less of them as things mature fast). This one introduces substantial improvements and some simplifications to the stack.

Most important bits:

* Agents reference implementation now has support for session / turn persistence. The default implementation uses sqlite but there's also support for using Redis.

* We have re-architected the structure of the Stack APIs to allow for more flexible routing. The motivating use cases are:
  - routing model A to ollama and model B to a remote provider like Together
  - routing shield A to local impl while shield B to a remote provider like Bedrock
  - routing a vector memory bank to Weaviate while routing a keyvalue memory bank to Redis

* Support for provider specific parameters to be passed from the clients. A client can pass data using `x_llamastack_provider_data` parameter which can be type-checked and provided to the Adapter implementations.
This commit is contained in:
Ashwin Bharambe 2024-09-23 14:22:22 -07:00 • committed by GitHub
parent 8bf8c07eb3
commit ec4fc800cc
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130 changed files with 9701 additions and 11227 deletions
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26
llama_stack/apis/models/models.py
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@ -4,11 +4,29 @@
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
from typing import Protocol
from typing import List, Optional, Protocol
from llama_models.schema_utils import webmethod # noqa: F401
from llama_models.llama3.api.datatypes import Model
from pydantic import BaseModel # noqa: F401
from llama_models.schema_utils import json_schema_type, webmethod
from pydantic import BaseModel, Field
from llama_stack.distribution.datatypes import GenericProviderConfig
class Models(Protocol): ...
@json_schema_type
class ModelServingSpec(BaseModel):
llama_model: Model = Field(
description="All metadatas associated with llama model (defined in llama_models.models.sku_list).",
)
provider_config: GenericProviderConfig = Field(
description="Provider config for the model, including provider_id, and corresponding config. ",
)
class Models(Protocol):
@webmethod(route="/models/list", method="GET")
async def list_models(self) -> List[ModelServingSpec]: ...
@webmethod(route="/models/get", method="GET")
async def get_model(self, core_model_id: str) -> Optional[ModelServingSpec]: ...