wehub-resource-sync
97 lines
3.1 KiB
Python
97 lines
3.1 KiB
Python
"""ComposioLangChain class definition"""
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import types
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import typing as t
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from inspect import Signature
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import pydantic
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from langchain_core.tools import StructuredTool as BaseStructuredTool
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from composio.core.provider import AgenticProvider, AgenticProviderExecuteFn
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from composio.types import Tool
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from composio.utils.pydantic import parse_pydantic_error
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from composio.utils.shared import (
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get_signature_format_from_schema_params,
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json_schema_to_model,
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normalize_tool_arguments,
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reinstate_reserved_python_keywords,
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substitute_reserved_python_keywords,
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)
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class StructuredTool(BaseStructuredTool): # type: ignore[misc]
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def run(self, *args, **kwargs):
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try:
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return super().run(*args, **kwargs)
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except pydantic.ValidationError as e:
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return {"successful": False, "error": parse_pydantic_error(e), "data": None}
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class LangchainProvider(
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AgenticProvider[StructuredTool, t.List[StructuredTool]],
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name="langchain",
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):
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"""
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Composio toolset for Langchain framework.
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"""
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runtime = "langchain"
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def wrap_tool(
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self, tool: Tool, execute_tool: AgenticProviderExecuteFn
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) -> StructuredTool:
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"""Wraps composio tool as Langchain StructuredTool object."""
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# Replace reserved python keywords
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schema_params, keywords = substitute_reserved_python_keywords(
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schema=tool.input_parameters
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)
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def function(**kwargs: t.Any) -> t.Dict:
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"""Wrapper function for composio action."""
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kwargs = reinstate_reserved_python_keywords(
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request=kwargs,
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keywords=keywords,
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)
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# Normalize defensively so a stringified payload is coerced to a dict (issue #2406).
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return execute_tool(tool.slug, normalize_tool_arguments(kwargs))
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action_func = types.FunctionType(
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function.__code__,
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globals=globals(),
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name=tool.slug,
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closure=function.__closure__,
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)
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action_func.__signature__ = Signature( # type: ignore
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parameters=get_signature_format_from_schema_params(
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schema_params=schema_params,
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skip_default=self.skip_default,
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)
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)
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action_func.__doc__ = tool.description
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return t.cast(
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StructuredTool,
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StructuredTool.from_function(
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name=tool.slug,
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description=tool.description,
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args_schema=json_schema_to_model(
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json_schema=schema_params,
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skip_default=self.skip_default,
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),
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return_schema=True,
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func=action_func,
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handle_tool_error=True,
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handle_validation_error=True,
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),
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)
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def wrap_tools(
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self,
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tools: t.Sequence[Tool],
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execute_tool: AgenticProviderExecuteFn,
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) -> t.List[StructuredTool]:
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"""
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Get composio tools wrapped as Langchain StructuredTool objects.
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"""
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return [self.wrap_tool(tool=tool, execute_tool=execute_tool) for tool in tools]
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