Package dev.langchain4j.model.vertexai

Class VertexAiGeminiChatModel

java.lang.Object

dev.langchain4j.model.vertexai.VertexAiGeminiChatModel

All Implemented Interfaces:

ChatLanguageModel, Closeable, AutoCloseable

public class VertexAiGeminiChatModel
extends Object
implements ChatLanguageModel, Closeable

Represents a Google Vertex AI Gemini language model with a chat completion interface, such as gemini-pro. See details here.
Please follow these steps before using this model:
1. Authentication
When developing locally, you can use one of:
a) Google Cloud SDK
b) Service account When using service account, ensure that GOOGLE_APPLICATION_CREDENTIALS environment variable points to your JSON service account key.
2. Authorization
3. Prerequisites

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	VertexAiGeminiChatModel.VertexAiGeminiChatModelBuilder

Constructor Summary

Constructors

Constructor	Description
VertexAiGeminiChatModel(com.google.cloud.vertexai.generativeai.GenerativeModel generativeModel, com.google.cloud.vertexai.api.GenerationConfig generationConfig)
VertexAiGeminiChatModel(com.google.cloud.vertexai.generativeai.GenerativeModel generativeModel, com.google.cloud.vertexai.api.GenerationConfig generationConfig, Integer maxRetries)
VertexAiGeminiChatModel(String project, String location, String modelName, Float temperature, Integer maxOutputTokens, Integer topK, Float topP, Integer seed, Integer maxRetries, String responseMimeType, com.google.cloud.vertexai.api.Schema responseSchema, Map<HarmCategory,SafetyThreshold> safetySettings, Boolean useGoogleSearch, String vertexSearchDatastore, ToolCallingMode toolCallingMode, List<String> allowedFunctionNames, Boolean logRequests, Boolean logResponses, List<ChatModelListener> listeners)

Method Summary

Modifier and Type	Method	Description
static VertexAiGeminiChatModel.VertexAiGeminiChatModelBuilder	builder()
ChatResponse	chat(ChatRequest chatRequest)	This is the main API to interact with the chat model.
void	close()
List<ChatModelListener>	listeners()
ModelProvider	provider()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface dev.langchain4j.model.chat.ChatLanguageModel

chat, chat, chat, defaultRequestParameters, doChat, supportedCapabilities

Constructor Details

VertexAiGeminiChatModel

public VertexAiGeminiChatModel(String project,
 String location,
 String modelName,
 Float temperature,
 Integer maxOutputTokens,
 Integer topK,
 Float topP,
 Integer seed,
 Integer maxRetries,
 String responseMimeType,
 com.google.cloud.vertexai.api.Schema responseSchema,
 Map<HarmCategory,SafetyThreshold> safetySettings,
 Boolean useGoogleSearch,
 String vertexSearchDatastore,
 ToolCallingMode toolCallingMode,
 List<String> allowedFunctionNames,
 Boolean logRequests,
 Boolean logResponses,
 List<ChatModelListener> listeners)

VertexAiGeminiChatModel

public VertexAiGeminiChatModel(com.google.cloud.vertexai.generativeai.GenerativeModel generativeModel,
 com.google.cloud.vertexai.api.GenerationConfig generationConfig)

VertexAiGeminiChatModel

public VertexAiGeminiChatModel(com.google.cloud.vertexai.generativeai.GenerativeModel generativeModel,
 com.google.cloud.vertexai.api.GenerationConfig generationConfig,
 Integer maxRetries)

Method Details

chat

public ChatResponse chat(ChatRequest chatRequest)

Description copied from interface: ChatLanguageModel

This is the main API to interact with the chat model. A temporary default implementation of this method is necessary until all ChatLanguageModel implementations adopt it. It should be removed once that occurs.

Specified by:

chat in interface ChatLanguageModel

Parameters:

chatRequest - a ChatRequest, containing all the inputs to the LLM

Returns:

a ChatResponse, containing all the outputs from the LLM

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

listeners

public List<ChatModelListener> listeners()

Specified by:

listeners in interface ChatLanguageModel

provider

public ModelProvider provider()

Specified by:

provider in interface ChatLanguageModel

builder

public static VertexAiGeminiChatModel.VertexAiGeminiChatModelBuilder builder()