Package dev.langchain4j.model.vertexai

Class VertexAiGeminiChatModel

java.lang.Object

dev.langchain4j.model.vertexai.VertexAiGeminiChatModel

All Implemented Interfaces:

dev.langchain4j.model.chat.ChatLanguageModel, Closeable, AutoCloseable

public class VertexAiGeminiChatModel
extends Object
implements dev.langchain4j.model.chat.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<dev.langchain4j.model.chat.listener.ChatModelListener> listeners)

Method Summary

Modifier and Type	Method	Description
static VertexAiGeminiChatModel.VertexAiGeminiChatModelBuilder	builder()
void	close()
dev.langchain4j.model.output.Response<dev.langchain4j.data.message.AiMessage>	generate(List<dev.langchain4j.data.message.ChatMessage> messages)
dev.langchain4j.model.output.Response<dev.langchain4j.data.message.AiMessage>	generate(List<dev.langchain4j.data.message.ChatMessage> messages, dev.langchain4j.agent.tool.ToolSpecification toolSpecification)
dev.langchain4j.model.output.Response<dev.langchain4j.data.message.AiMessage>	generate(List<dev.langchain4j.data.message.ChatMessage> messages, List<dev.langchain4j.agent.tool.ToolSpecification> toolSpecifications)

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, generate, generate, 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<dev.langchain4j.model.chat.listener.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

generate

public dev.langchain4j.model.output.Response<dev.langchain4j.data.message.AiMessage> generate(List<dev.langchain4j.data.message.ChatMessage> messages)

Specified by:

generate in interface dev.langchain4j.model.chat.ChatLanguageModel

generate

public dev.langchain4j.model.output.Response<dev.langchain4j.data.message.AiMessage> generate(List<dev.langchain4j.data.message.ChatMessage> messages,
 List<dev.langchain4j.agent.tool.ToolSpecification> toolSpecifications)

Specified by:

generate in interface dev.langchain4j.model.chat.ChatLanguageModel

generate

public dev.langchain4j.model.output.Response<dev.langchain4j.data.message.AiMessage> generate(List<dev.langchain4j.data.message.ChatMessage> messages,
 dev.langchain4j.agent.tool.ToolSpecification toolSpecification)

Specified by:

generate in interface dev.langchain4j.model.chat.ChatLanguageModel

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

builder

public static VertexAiGeminiChatModel.VertexAiGeminiChatModelBuilder builder()