core[patch]: deprecate v1 tracer (#15608)

libs/core/langchain_core/tracers/context.py

@@ -18,6 +18,7 @@
 from langsmith import utils as ls_utils
 from langsmith.run_helpers import get_run_tree_context
 
+from langchain_core._api import deprecated
 from langchain_core.tracers.langchain import LangChainTracer
 from langchain_core.tracers.langchain_v1 import LangChainTracerV1
 from langchain_core.tracers.run_collector import RunCollectorCallbackHandler
@@ -30,6 +31,7 @@
     from langchain_core.callbacks.base import BaseCallbackHandler, Callbacks
     from langchain_core.callbacks.manager import AsyncCallbackManager, CallbackManager
 
+# Deprecated as of 0.1.0, will be removed in 0.2.0.
 tracing_callback_var: ContextVar[Optional[LangChainTracerV1]] = ContextVar(  # noqa: E501
     "tracing_callback", default=None
 )
@@ -43,6 +45,7 @@
 
 
 @contextmanager
+@deprecated("0.1.0", alternative="tracing_v2_enabled", removal="0.2.0")
 def tracing_enabled(
     session_name: str = "default",
 ) -> Generator[TracerSessionV1, None, None]:

libs/core/langchain_core/tracers/langchain_v1.py

@@ -6,6 +6,7 @@
 
 import requests
 
+from langchain_core._api import deprecated
 from langchain_core.messages import get_buffer_string
 from langchain_core.tracers.base import BaseTracer
 from langchain_core.tracers.schemas import (
@@ -34,6 +35,7 @@ def _get_endpoint() -> str:
     return os.getenv("LANGCHAIN_ENDPOINT", "http://localhost:8000")
 
 
+@deprecated("0.1.0", alternative="LangChainTracer", removal="0.2.0")
 class LangChainTracerV1(BaseTracer):
     """An implementation of the SharedTracer that POSTS to the langchain endpoint."""
 

libs/core/langchain_core/tracers/schemas.py

@@ -9,10 +9,12 @@
 from langsmith.schemas import RunBase as BaseRunV2
 from langsmith.schemas import RunTypeEnum as RunTypeEnumDep
 
+from langchain_core._api import deprecated
 from langchain_core.outputs import LLMResult
 from langchain_core.pydantic_v1 import BaseModel, Field, root_validator
 
 
+@deprecated("0.1.0", alternative="Use string instead.", removal="0.2.0")
 def RunTypeEnum() -> Type[RunTypeEnumDep]:
     """RunTypeEnum."""
     warnings.warn(
@@ -23,6 +25,7 @@ def RunTypeEnum() -> Type[RunTypeEnumDep]:
     return RunTypeEnumDep
 
 
+@deprecated("0.1.0", removal="0.2.0")
 class TracerSessionV1Base(BaseModel):
     """Base class for TracerSessionV1."""
 
@@ -31,28 +34,33 @@ class TracerSessionV1Base(BaseModel):
     extra: Optional[Dict[str, Any]] = None
 
 
+@deprecated("0.1.0", removal="0.2.0")
 class TracerSessionV1Create(TracerSessionV1Base):
     """Create class for TracerSessionV1."""
 
 
+@deprecated("0.1.0", removal="0.2.0")
 class TracerSessionV1(TracerSessionV1Base):
     """TracerSessionV1 schema."""
 
     id: int
 
 
+@deprecated("0.1.0", removal="0.2.0")
 class TracerSessionBase(TracerSessionV1Base):
     """Base class for TracerSession."""
 
     tenant_id: UUID
 
 
+@deprecated("0.1.0", removal="0.2.0")
 class TracerSession(TracerSessionBase):
     """TracerSessionV1 schema for the V2 API."""
 
     id: UUID
 
 
+@deprecated("0.1.0", alternative="Run", removal="0.2.0")
 class BaseRun(BaseModel):
     """Base class for Run."""
 
@@ -68,13 +76,15 @@ class BaseRun(BaseModel):
     error: Optional[str] = None
 
 
+@deprecated("0.1.0", alternative="Run", removal="0.2.0")
 class LLMRun(BaseRun):
     """Class for LLMRun."""
 
     prompts: List[str]
     response: Optional[LLMResult] = None
 
 
+@deprecated("0.1.0", alternative="Run", removal="0.2.0")
 class ChainRun(BaseRun):
     """Class for ChainRun."""
 
@@ -85,6 +95,7 @@ class ChainRun(BaseRun):
     child_tool_runs: List[ToolRun] = Field(default_factory=list)
 
 
+@deprecated("0.1.0", alternative="Run", removal="0.2.0")
 class ToolRun(BaseRun):
     """Class for ToolRun."""