Module●Since v1.0

tracers/log_stream

import { ... } from "@langchain/core/tracers/log_stream";

Functions

function

isLogStreamHandler→ handler is LogStreamCallbackHandler

Classes

class

LogStreamCallbackHandler

Class that extends the BaseTracer class from the langchain.callbacks.tracers.base module. It represents a callback handler that logs the execution of runs and emits RunLog instances to a RunLogStream.

class

RunLog

List of jsonpatch JSONPatchOperations, which describe how to create the run state from an empty dict. This is the minimal representation of the log, designed to be serialized as JSON and sent over the wire to reconstruct the log on the other side. Reconstruction of the state can be done with any jsonpatch-compliant library, see https://jsonpatch.com for more information.

class

RunLogPatch

Interfaces

interface

LogStreamCallbackHandlerInput

Interface for the input parameters of the BaseCallbackHandler class. It allows to specify which types of events should be ignored by the callback handler.