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531 lines
15 KiB
Python
531 lines
15 KiB
Python
"""Test Tracer classes."""
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from __future__ import annotations
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import threading
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from datetime import datetime
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from typing import List, Optional, Union
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import pytest
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from freezegun import freeze_time
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from langchain.callbacks.tracers.base import (
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BaseTracer,
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ChainRun,
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LLMRun,
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SharedTracer,
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ToolRun,
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Tracer,
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TracerException,
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TracerSession,
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)
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from langchain.callbacks.tracers.schemas import TracerSessionCreate
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from langchain.schema import AgentAction, LLMResult
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TEST_SESSION_ID = 2023
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@freeze_time("2023-01-01")
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def _get_compare_run() -> Union[LLMRun, ChainRun, ToolRun]:
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return ChainRun(
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id=None,
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error=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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inputs={},
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outputs={},
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session_id=TEST_SESSION_ID,
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child_runs=[
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ToolRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=2,
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serialized={},
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tool_input="test",
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output="test",
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action="action",
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session_id=TEST_SESSION_ID,
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error=None,
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child_runs=[
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LLMRun(
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id=None,
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error=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=3,
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serialized={},
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prompts=[],
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response=LLMResult([[]]),
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session_id=TEST_SESSION_ID,
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)
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],
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),
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LLMRun(
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id=None,
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error=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=4,
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serialized={},
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prompts=[],
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response=LLMResult([[]]),
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session_id=TEST_SESSION_ID,
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),
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],
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)
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def _perform_nested_run(tracer: BaseTracer) -> None:
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"""Perform a nested run."""
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tracer.on_chain_start(serialized={}, inputs={})
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tracer.on_tool_start(
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serialized={}, action=AgentAction(tool="action", tool_input="test", log="")
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)
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tracer.on_llm_start(serialized={}, prompts=[])
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tracer.on_llm_end(response=LLMResult([[]]))
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tracer.on_tool_end("test")
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tracer.on_llm_start(serialized={}, prompts=[])
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tracer.on_llm_end(response=LLMResult([[]]))
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tracer.on_chain_end(outputs={})
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def _add_child_run(
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parent_run: Union[ChainRun, ToolRun],
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child_run: Union[LLMRun, ChainRun, ToolRun],
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) -> None:
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"""Add child run to a chain run or tool run."""
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parent_run.child_runs.append(child_run)
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def _generate_id() -> Optional[Union[int, str]]:
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"""Generate an id for a run."""
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return None
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def load_session(session_name: str) -> TracerSession:
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"""Load a tracing session."""
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return TracerSession(id=1, name=session_name, start_time=datetime.utcnow())
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def _persist_session(session: TracerSessionCreate) -> TracerSession:
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"""Persist a tracing session."""
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return TracerSession(id=TEST_SESSION_ID, **session.dict())
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def load_default_session() -> TracerSession:
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"""Load a tracing session."""
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return TracerSession(id=1, name="default", start_time=datetime.utcnow())
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class FakeTracer(Tracer):
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"""Fake tracer that records LangChain execution."""
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def __init__(self) -> None:
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"""Initialize the tracer."""
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super().__init__()
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self.runs: List[Union[LLMRun, ChainRun, ToolRun]] = []
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def _persist_run(self, run: Union[LLMRun, ChainRun, ToolRun]) -> None:
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"""Persist a run."""
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self.runs.append(run)
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def _add_child_run(
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self,
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parent_run: Union[ChainRun, ToolRun],
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child_run: Union[LLMRun, ChainRun, ToolRun],
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) -> None:
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"""Add child run to a chain run or tool run."""
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_add_child_run(parent_run, child_run)
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def _generate_id(self) -> Optional[Union[int, str]]:
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"""Generate an id for a run."""
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return _generate_id()
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def _persist_session(self, session: TracerSessionCreate) -> TracerSession:
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"""Persist a tracing session."""
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return _persist_session(session)
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def load_session(self, session_name: str) -> TracerSession:
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"""Load a tracing session."""
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return load_session(session_name)
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def load_default_session(self) -> TracerSession:
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"""Load a tracing session."""
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return load_default_session()
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class FakeSharedTracer(SharedTracer):
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"""Fake shared tracer that records LangChain execution."""
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runs: List[Union[LLMRun, ChainRun, ToolRun]] = []
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def _persist_run(self, run: Union[LLMRun, ChainRun, ToolRun]) -> None:
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"""Persist a run."""
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with self._lock:
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self.runs.append(run)
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def remove_runs(self) -> None:
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"""Remove all runs."""
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with self._lock:
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self.runs = []
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def _add_child_run(
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self,
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parent_run: Union[ChainRun, ToolRun],
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child_run: Union[LLMRun, ChainRun, ToolRun],
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) -> None:
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"""Add child run to a chain run or tool run."""
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_add_child_run(parent_run, child_run)
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def _generate_id(self) -> Optional[Union[int, str]]:
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"""Generate an id for a run."""
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return _generate_id()
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def _persist_session(self, session: TracerSessionCreate) -> TracerSession:
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"""Persist a tracing session."""
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return _persist_session(session)
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def load_session(self, session_name: str) -> TracerSession:
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"""Load a tracing session."""
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return load_session(session_name)
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def load_default_session(self) -> TracerSession:
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"""Load a tracing session."""
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return load_default_session()
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@freeze_time("2023-01-01")
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def test_tracer_llm_run() -> None:
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"""Test tracer on an LLM run."""
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compare_run = LLMRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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prompts=[],
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response=LLMResult([[]]),
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session_id=TEST_SESSION_ID,
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error=None,
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)
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tracer = FakeTracer()
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tracer.new_session()
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tracer.on_llm_start(serialized={}, prompts=[])
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tracer.on_llm_end(response=LLMResult([[]]))
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assert tracer.runs == [compare_run]
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@freeze_time("2023-01-01")
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def test_tracer_llm_run_errors_no_session() -> None:
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"""Test tracer on an LLM run without a session."""
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tracer = FakeTracer()
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with pytest.raises(TracerException):
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tracer.on_llm_start(serialized={}, prompts=[])
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@freeze_time("2023-01-01")
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def test_tracer_llm_run_errors_no_start() -> None:
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"""Test tracer on an LLM run without a start."""
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tracer = FakeTracer()
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tracer.new_session()
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with pytest.raises(TracerException):
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tracer.on_llm_end(response=LLMResult([[]]))
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@freeze_time("2023-01-01")
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def test_tracer_multiple_llm_runs() -> None:
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"""Test the tracer with multiple runs."""
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compare_run = LLMRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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prompts=[],
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response=LLMResult([[]]),
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session_id=TEST_SESSION_ID,
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error=None,
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)
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tracer = FakeTracer()
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tracer.new_session()
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num_runs = 10
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for _ in range(num_runs):
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tracer.on_llm_start(serialized={}, prompts=[])
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tracer.on_llm_end(response=LLMResult([[]]))
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assert tracer.runs == [compare_run] * num_runs
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@freeze_time("2023-01-01")
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def test_tracer_chain_run() -> None:
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"""Test tracer on a Chain run."""
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compare_run = ChainRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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inputs={},
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outputs={},
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session_id=TEST_SESSION_ID,
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error=None,
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)
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tracer = FakeTracer()
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tracer.new_session()
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tracer.on_chain_start(serialized={}, inputs={})
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tracer.on_chain_end(outputs={})
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assert tracer.runs == [compare_run]
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@freeze_time("2023-01-01")
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def test_tracer_tool_run() -> None:
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"""Test tracer on a Tool run."""
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compare_run = ToolRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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tool_input="test",
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output="test",
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action="action",
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session_id=TEST_SESSION_ID,
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error=None,
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)
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tracer = FakeTracer()
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tracer.new_session()
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tracer.on_tool_start(
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serialized={}, action=AgentAction(tool="action", tool_input="test", log="")
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)
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tracer.on_tool_end("test")
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assert tracer.runs == [compare_run]
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@freeze_time("2023-01-01")
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def test_tracer_nested_run() -> None:
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"""Test tracer on a nested run."""
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tracer = FakeTracer()
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tracer.new_session()
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_perform_nested_run(tracer)
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assert tracer.runs == [_get_compare_run()]
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@freeze_time("2023-01-01")
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def test_tracer_llm_run_on_error() -> None:
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"""Test tracer on an LLM run with an error."""
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exception = Exception("test")
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compare_run = LLMRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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prompts=[],
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response=None,
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session_id=TEST_SESSION_ID,
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error=repr(exception),
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)
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tracer = FakeTracer()
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tracer.new_session()
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tracer.on_llm_start(serialized={}, prompts=[])
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tracer.on_llm_error(exception)
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assert tracer.runs == [compare_run]
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@freeze_time("2023-01-01")
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def test_tracer_chain_run_on_error() -> None:
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"""Test tracer on a Chain run with an error."""
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exception = Exception("test")
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compare_run = ChainRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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inputs={},
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outputs=None,
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session_id=TEST_SESSION_ID,
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error=repr(exception),
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)
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tracer = FakeTracer()
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tracer.new_session()
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tracer.on_chain_start(serialized={}, inputs={})
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tracer.on_chain_error(exception)
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assert tracer.runs == [compare_run]
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@freeze_time("2023-01-01")
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def test_tracer_tool_run_on_error() -> None:
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"""Test tracer on a Tool run with an error."""
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exception = Exception("test")
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compare_run = ToolRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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tool_input="test",
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output=None,
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action="action",
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session_id=TEST_SESSION_ID,
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error=repr(exception),
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)
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tracer = FakeTracer()
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tracer.new_session()
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tracer.on_tool_start(
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serialized={}, action=AgentAction(tool="action", tool_input="test", log="")
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)
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tracer.on_tool_error(exception)
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assert tracer.runs == [compare_run]
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@freeze_time("2023-01-01")
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def test_tracer_nested_runs_on_error() -> None:
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"""Test tracer on a nested run with an error."""
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exception = Exception("test")
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tracer = FakeTracer()
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tracer.new_session()
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for _ in range(3):
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tracer.on_chain_start(serialized={}, inputs={})
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tracer.on_llm_start(serialized={}, prompts=[])
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tracer.on_llm_end(response=LLMResult([[]]))
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tracer.on_llm_start(serialized={}, prompts=[])
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tracer.on_llm_end(response=LLMResult([[]]))
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tracer.on_tool_start(
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serialized={}, action=AgentAction(tool="action", tool_input="test", log="")
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)
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tracer.on_llm_start(serialized={}, prompts=[])
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tracer.on_llm_error(exception)
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tracer.on_tool_error(exception)
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tracer.on_chain_error(exception)
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compare_run = ChainRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=1,
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serialized={},
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session_id=TEST_SESSION_ID,
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error=repr(exception),
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inputs={},
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outputs=None,
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child_runs=[
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LLMRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=2,
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serialized={},
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session_id=TEST_SESSION_ID,
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error=None,
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prompts=[],
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response=LLMResult(generations=[[]], llm_output=None),
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),
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LLMRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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execution_order=3,
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serialized={},
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session_id=TEST_SESSION_ID,
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error=None,
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prompts=[],
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response=LLMResult(generations=[[]], llm_output=None),
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),
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ToolRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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|
execution_order=4,
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|
serialized={},
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session_id=TEST_SESSION_ID,
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error=repr(exception),
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tool_input="test",
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output=None,
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action="action",
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child_runs=[
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LLMRun(
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id=None,
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start_time=datetime.utcnow(),
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end_time=datetime.utcnow(),
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extra={},
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|
execution_order=5,
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|
serialized={},
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session_id=TEST_SESSION_ID,
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error=repr(exception),
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prompts=[],
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response=None,
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)
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],
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child_llm_runs=[],
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child_chain_runs=[],
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child_tool_runs=[],
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),
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],
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child_llm_runs=[],
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child_chain_runs=[],
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child_tool_runs=[],
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)
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assert tracer.runs == [compare_run] * 3
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|
|
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|
@freeze_time("2023-01-01")
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def test_shared_tracer_nested_run() -> None:
|
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"""Test shared tracer on a nested run."""
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tracer = FakeSharedTracer()
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tracer.new_session()
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tracer.remove_runs()
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_perform_nested_run(tracer)
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assert tracer.runs == [_get_compare_run()]
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|
|
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@freeze_time("2023-01-01")
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def test_shared_tracer_nested_run_multithreaded() -> None:
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"""Test shared tracer on a nested run."""
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tracer = FakeSharedTracer()
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tracer.remove_runs()
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tracer.new_session()
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threads = []
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num_threads = 10
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for _ in range(num_threads):
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thread = threading.Thread(target=_perform_nested_run, args=(tracer,))
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thread.start()
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threads.append(thread)
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for thread in threads:
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thread.join()
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assert tracer.runs == [_get_compare_run()] * num_threads
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