Class: BaseTracer

callbacks.internal.BaseTracer

Hierarchy

• BaseCallbackHandler

  ↳ BaseTracer

  ↳↳ LangChainTracer

Constructors

constructor

• Protected new BaseTracer()

Overrides

BaseCallbackHandler.constructor

Defined in

langchain/src/callbacks/tracers.ts:57

Properties

alwaysVerbose

• alwaysVerbose: boolean = false

Inherited from

BaseCallbackHandler.alwaysVerbose

Defined in

langchain/src/callbacks/base.ts:62

---

executionOrder

• Protected executionOrder: number = 1

Defined in

langchain/src/callbacks/tracers.ts:55

---

ignoreAgent

• ignoreAgent: boolean = false

Inherited from

BaseCallbackHandler.ignoreAgent

Defined in

langchain/src/callbacks/base.ts:68

---

ignoreChain

• ignoreChain: boolean = false

Inherited from

BaseCallbackHandler.ignoreChain

Defined in

langchain/src/callbacks/base.ts:66

---

ignoreLLM

• ignoreLLM: boolean = false

Inherited from

BaseCallbackHandler.ignoreLLM

Defined in

langchain/src/callbacks/base.ts:64

---

session

• Protected Optional session: TracerSession

Defined in

langchain/src/callbacks/tracers.ts:51

---

stack

• Protected stack: (LLMRun | ChainRun | ToolRun)[] = []

Defined in

langchain/src/callbacks/tracers.ts:53

Methods

_addChildRun

▸ Protected _addChildRun(parentRun, childRun): void

Parameters

Name	Type
parentRun	ChainRun | ToolRun
childRun	LLMRun | ChainRun | ToolRun

Returns

void

Defined in

langchain/src/callbacks/tracers.ts:84

---

_endTrace

▸ Protected _endTrace(): Promise<void>

Returns

Promise<void>

Defined in

langchain/src/callbacks/tracers.ts:117

---

_startTrace

▸ Protected _startTrace(run): void

Parameters

Name	Type
run	LLMRun | ChainRun | ToolRun

Returns

void

Defined in

langchain/src/callbacks/tracers.ts:99

---

handleAgentAction

▸ Optional handleAgentAction(action, verbose?): Promise<void>

Parameters

Name	Type
action	AgentAction
verbose?	boolean

Returns

Promise<void>

Inherited from

BaseCallbackHandler.handleAgentAction

Defined in

langchain/src/callbacks/base.ts:53

---

handleAgentEnd

▸ Optional handleAgentEnd(action, verbose?): Promise<void>

Parameters

Name	Type
action	AgentFinish
verbose?	boolean

Returns

Promise<void>

Inherited from

BaseCallbackHandler.handleAgentEnd

Defined in

langchain/src/callbacks/base.ts:55

---

handleChainEnd

▸ handleChainEnd(outputs, _verbose?): Promise<void>

Parameters

Name	Type
outputs	ChainValues
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleChainEnd

Defined in

langchain/src/callbacks/tracers.ts:190

---

handleChainError

▸ handleChainError(error, _verbose?): Promise<void>

Parameters

Name	Type
error	Error
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleChainError

Defined in

langchain/src/callbacks/tracers.ts:203

---

handleChainStart

▸ handleChainStart(chain, inputs, _verbose?): Promise<void>

Parameters

Name	Type
chain	Object
chain.name	string
inputs	ChainValues
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleChainStart

Defined in

langchain/src/callbacks/tracers.ts:166

---

handleLLMEnd

▸ handleLLMEnd(output, _verbose?): Promise<void>

Parameters

Name	Type
output	LLMResult
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleLLMEnd

Defined in

langchain/src/callbacks/tracers.ts:146

---

handleLLMError

▸ handleLLMError(error, _verbose?): Promise<void>

Parameters

Name	Type
error	Error
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleLLMError

Defined in

langchain/src/callbacks/tracers.ts:156

---

handleLLMNewToken

▸ Optional handleLLMNewToken(token, verbose?): Promise<void>

Parameters

Name	Type
token	string
verbose?	boolean

Returns

Promise<void>

Inherited from

BaseCallbackHandler.handleLLMNewToken

Defined in

langchain/src/callbacks/base.ts:25

---

handleLLMStart

▸ handleLLMStart(llm, prompts, _verbose?): Promise<void>

Parameters

Name	Type
llm	Object
llm.name	string
prompts	string[]
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleLLMStart

Defined in

langchain/src/callbacks/tracers.ts:125

---

handleText

▸ Optional handleText(text, verbose?): Promise<void>

Parameters

Name	Type
text	string
verbose?	boolean

Returns

Promise<void>

Inherited from

BaseCallbackHandler.handleText

Defined in

langchain/src/callbacks/base.ts:51

---

handleToolEnd

▸ handleToolEnd(output, _verbose?): Promise<void>

Parameters

Name	Type
output	string
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleToolEnd

Defined in

langchain/src/callbacks/tracers.ts:238

---

handleToolError

▸ handleToolError(error, _verbose?): Promise<void>

Parameters

Name	Type
error	Error
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleToolError

Defined in

langchain/src/callbacks/tracers.ts:248

---

handleToolStart

▸ handleToolStart(tool, input, _verbose?): Promise<void>

Parameters

Name	Type
tool	Object
tool.name	string
input	string
_verbose?	boolean

Returns

Promise<void>

Overrides

BaseCallbackHandler.handleToolStart

Defined in

langchain/src/callbacks/tracers.ts:213

---

loadDefaultSession

▸ Abstract loadDefaultSession(): Promise<TracerSession>

Returns

Promise<TracerSession>

Defined in

langchain/src/callbacks/tracers.ts:64

---

loadSession

▸ Abstract loadSession(sessionName): Promise<TracerSession>

Parameters

Name	Type
sessionName	string

Returns

Promise<TracerSession>

Defined in

langchain/src/callbacks/tracers.ts:62

---

newSession

▸ newSession(sessionName?): Promise<TracerSession>

Parameters

Name	Type
sessionName?	string

Returns

Promise<TracerSession>

Defined in

langchain/src/callbacks/tracers.ts:74

---

persistRun

▸ Protected Abstract persistRun(run): Promise<void>

Parameters

Name	Type
run	LLMRun | ChainRun | ToolRun

Returns

Promise<void>

Defined in

langchain/src/callbacks/tracers.ts:66

---

persistSession

▸ Protected Abstract persistSession(session): Promise<TracerSession>

Parameters

Name	Type
session	BaseTracerSession

Returns

Promise<TracerSession>

Defined in

langchain/src/callbacks/tracers.ts:70