mirror of
https://github.com/meta-llama/llama-stack.git
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160 lines
4.5 KiB
Python
160 lines
4.5 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 enum import Enum
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from typing import Annotated, Any, Dict, List, Literal, Optional, Union
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from llama_models.llama3.api.datatypes import BuiltinTool, ToolPromptFormat
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from llama_models.schema_utils import json_schema_type, register_schema, webmethod
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from pydantic import BaseModel, Field
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from typing_extensions import Protocol, runtime_checkable
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from llama_stack.apis.common.content_types import InterleavedContent, URL
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from llama_stack.apis.resource import Resource, ResourceType
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from llama_stack.providers.utils.telemetry.trace_protocol import trace_protocol
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@json_schema_type
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class ToolParameter(BaseModel):
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name: str
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parameter_type: str
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description: str
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required: bool
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default: Optional[Any] = None
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@json_schema_type
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class ToolHost(Enum):
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distribution = "distribution"
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client = "client"
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model_context_protocol = "model_context_protocol"
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@json_schema_type
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class Tool(Resource):
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type: Literal[ResourceType.tool.value] = ResourceType.tool.value
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tool_group: str
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tool_host: ToolHost
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description: str
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parameters: List[ToolParameter]
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built_in_type: Optional[BuiltinTool] = None
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metadata: Optional[Dict[str, Any]] = None
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tool_prompt_format: Optional[ToolPromptFormat] = Field(
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default=ToolPromptFormat.json
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)
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@json_schema_type
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class ToolDef(BaseModel):
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name: str
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description: Optional[str] = None
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parameters: Optional[List[ToolParameter]] = None
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metadata: Optional[Dict[str, Any]] = None
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tool_prompt_format: Optional[ToolPromptFormat] = Field(
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default=ToolPromptFormat.json
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)
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@json_schema_type
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class MCPToolGroupDef(BaseModel):
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"""
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A tool group that is defined by in a model context protocol server.
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Refer to https://modelcontextprotocol.io/docs/concepts/tools for more information.
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"""
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type: Literal["model_context_protocol"] = "model_context_protocol"
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endpoint: URL
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@json_schema_type
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class UserDefinedToolGroupDef(BaseModel):
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type: Literal["user_defined"] = "user_defined"
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tools: List[ToolDef]
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ToolGroupDef = register_schema(
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Annotated[
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Union[MCPToolGroupDef, UserDefinedToolGroupDef], Field(discriminator="type")
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],
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name="ToolGroupDef",
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)
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@json_schema_type
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class ToolGroupInput(BaseModel):
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tool_group_id: str
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tool_group_def: ToolGroupDef
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provider_id: Optional[str] = None
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@json_schema_type
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class ToolGroup(Resource):
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type: Literal[ResourceType.tool_group.value] = ResourceType.tool_group.value
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@json_schema_type
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class ToolInvocationResult(BaseModel):
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content: InterleavedContent
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error_message: Optional[str] = None
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error_code: Optional[int] = None
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class ToolStore(Protocol):
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def get_tool(self, tool_name: str) -> Tool: ...
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@runtime_checkable
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@trace_protocol
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class ToolGroups(Protocol):
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@webmethod(route="/toolgroups/register", method="POST")
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async def register_tool_group(
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self,
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tool_group_id: str,
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tool_group_def: ToolGroupDef,
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provider_id: Optional[str] = None,
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) -> None:
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"""Register a tool group"""
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...
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@webmethod(route="/toolgroups/get", method="GET")
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async def get_tool_group(
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self,
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tool_group_id: str,
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) -> ToolGroup: ...
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@webmethod(route="/toolgroups/list", method="GET")
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async def list_tool_groups(self) -> List[ToolGroup]:
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"""List tool groups with optional provider"""
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...
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@webmethod(route="/tools/list", method="GET")
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async def list_tools(self, tool_group_id: Optional[str] = None) -> List[Tool]:
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"""List tools with optional tool group"""
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...
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@webmethod(route="/tools/get", method="GET")
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async def get_tool(self, tool_name: str) -> Tool: ...
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@webmethod(route="/toolgroups/unregister", method="POST")
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async def unregister_tool_group(self, tool_group_id: str) -> None:
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"""Unregister a tool group"""
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...
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@runtime_checkable
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@trace_protocol
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class ToolRuntime(Protocol):
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tool_store: ToolStore
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@webmethod(route="/tool-runtime/discover", method="POST")
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async def discover_tools(self, tool_group: ToolGroupDef) -> List[ToolDef]: ...
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@webmethod(route="/tool-runtime/invoke", method="POST")
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async def invoke_tool(
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self, tool_name: str, args: Dict[str, Any]
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) -> ToolInvocationResult:
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"""Run a tool with the given arguments"""
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...
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