Package dev.langchain4j.model.bedrock

Class BedrockStreamingChatModel

java.lang.Object
dev.langchain4j.model.bedrock.BedrockStreamingChatModel
All Implemented Interfaces:
dev.langchain4j.model.chat.StreamingChatModel
public class BedrockStreamingChatModel extends Object implements dev.langchain4j.model.chat.StreamingChatModel
BedrockStreamingChatModel uses the Bedrock ConverseAPI.
See Also:

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static class 
    BedrockStreamingChatModel.Builder
     

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected final BedrockChatRequestParameters
    defaultRequestParameters
     
    protected final List<dev.langchain4j.model.chat.listener.ChatModelListener>
    listeners
     
    protected final software.amazon.awssdk.regions.Region
    region
     
    protected final boolean
    returnThinking
     
    protected final boolean
    sendThinking
     
    protected final Duration
    timeout
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    BedrockStreamingChatModel(BedrockStreamingChatModel.Builder builder)
     
    BedrockStreamingChatModel(String modelId)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    protected software.amazon.awssdk.core.document.Document
    additionalRequestModelFieldsFrom(dev.langchain4j.model.chat.request.ChatRequestParameters chatRequestParameters)
     
    protected dev.langchain4j.data.message.AiMessage
    aiMessageFrom(software.amazon.awssdk.services.bedrockruntime.model.ConverseResponse converseResponse)
     
    static BedrockStreamingChatModel.Builder
    builder()
     
    protected software.amazon.awssdk.services.bedrockruntime.model.ContentBlock
    convertContent(dev.langchain4j.data.message.Content content)
     
    protected List<software.amazon.awssdk.services.bedrockruntime.model.ContentBlock>
    convertContents(List<dev.langchain4j.data.message.Content> contents)
     
    protected software.amazon.awssdk.services.bedrockruntime.model.Message
    convertToBedRockMessage(dev.langchain4j.data.message.ChatMessage message)
     
    protected List<software.amazon.awssdk.services.bedrockruntime.model.ContentBlock>
    convertToolRequests(List<dev.langchain4j.agent.tool.ToolExecutionRequest> requests)
     
    protected software.amazon.awssdk.services.bedrockruntime.model.Message
    createAiMessage(dev.langchain4j.data.message.AiMessage message)
     
    protected software.amazon.awssdk.services.bedrockruntime.model.ContentBlock
    createImageBlock(dev.langchain4j.data.message.ImageContent imageContent)
     
    protected software.amazon.awssdk.services.bedrockruntime.model.ContentBlock
    createToolResultBlock(dev.langchain4j.data.message.ToolExecutionResultMessage toolResult)
     
    protected software.amazon.awssdk.services.bedrockruntime.model.Message
    createUserMessage(dev.langchain4j.data.message.UserMessage message)
     
    protected static Float
    dblToFloat(Double d)
     
    BedrockChatRequestParameters
    defaultRequestParameters()
     
    void
    doChat(dev.langchain4j.model.chat.request.ChatRequest chatRequest, dev.langchain4j.model.chat.response.StreamingChatResponseHandler handler)
     
    protected static String
    extractFilenameWithoutExtensionFromUri(URI uri)
     
    protected List<software.amazon.awssdk.services.bedrockruntime.model.Message>
    extractRegularMessages(List<dev.langchain4j.data.message.ChatMessage> messages)
     
    protected List<software.amazon.awssdk.services.bedrockruntime.model.SystemContentBlock>
    extractSystemMessages(List<dev.langchain4j.data.message.ChatMessage> messages)
     
    protected software.amazon.awssdk.services.bedrockruntime.model.ToolConfiguration
    extractToolConfigurationFrom(dev.langchain4j.model.chat.request.ChatRequest chatRequest)
     
    protected dev.langchain4j.model.output.FinishReason
    finishReasonFrom(software.amazon.awssdk.services.bedrockruntime.model.StopReason stopReason)
     
    protected void
    handleToolResult(dev.langchain4j.data.message.ToolExecutionResultMessage toolResult, List<software.amazon.awssdk.services.bedrockruntime.model.ContentBlock> blocks, List<software.amazon.awssdk.services.bedrockruntime.model.Message> bedrockMessages, int currentIndex, List<dev.langchain4j.data.message.ChatMessage> allMessages)
     
    protected software.amazon.awssdk.services.bedrockruntime.model.InferenceConfiguration
    inferenceConfigFrom(dev.langchain4j.model.chat.request.ChatRequestParameters parameters)
     
    List<dev.langchain4j.model.chat.listener.ChatModelListener>
    listeners()
     
    dev.langchain4j.model.ModelProvider
    provider()
     
    protected dev.langchain4j.model.output.TokenUsage
    tokenUsageFrom(software.amazon.awssdk.services.bedrockruntime.model.TokenUsage tokenUsage)
     
    protected static void
    validate(dev.langchain4j.model.chat.request.ChatRequestParameters parameters)
     

    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.StreamingChatModel

    chat, chat, chat, supportedCapabilities

  • Field Details

    • region

      protected final software.amazon.awssdk.regions.Region region

    • timeout

      protected final Duration timeout

    • returnThinking

      protected final boolean returnThinking

    • sendThinking

      protected final boolean sendThinking

    • defaultRequestParameters

      protected final BedrockChatRequestParameters defaultRequestParameters

    • listeners

      protected final List<dev.langchain4j.model.chat.listener.ChatModelListener> listeners

  • Constructor Details

  • Method Details

    • doChat

      public void doChat(dev.langchain4j.model.chat.request.ChatRequest chatRequest, dev.langchain4j.model.chat.response.StreamingChatResponseHandler handler)
      Specified by:
      doChat in interface dev.langchain4j.model.chat.StreamingChatModel

    • defaultRequestParameters

      public BedrockChatRequestParameters defaultRequestParameters()
      Specified by:
      defaultRequestParameters in interface dev.langchain4j.model.chat.StreamingChatModel

    • listeners

      public List<dev.langchain4j.model.chat.listener.ChatModelListener> listeners()
      Specified by:
      listeners in interface dev.langchain4j.model.chat.StreamingChatModel

    • provider

      public dev.langchain4j.model.ModelProvider provider()
      Specified by:
      provider in interface dev.langchain4j.model.chat.StreamingChatModel

    • builder

      public static BedrockStreamingChatModel.Builder builder()

    • extractSystemMessages

      protected List<software.amazon.awssdk.services.bedrockruntime.model.SystemContentBlock> extractSystemMessages(List<dev.langchain4j.data.message.ChatMessage> messages)

    • extractRegularMessages

      protected List<software.amazon.awssdk.services.bedrockruntime.model.Message> extractRegularMessages(List<dev.langchain4j.data.message.ChatMessage> messages)

    • handleToolResult

      protected void handleToolResult(dev.langchain4j.data.message.ToolExecutionResultMessage toolResult, List<software.amazon.awssdk.services.bedrockruntime.model.ContentBlock> blocks, List<software.amazon.awssdk.services.bedrockruntime.model.Message> bedrockMessages, int currentIndex, List<dev.langchain4j.data.message.ChatMessage> allMessages)

    • createToolResultBlock

      protected software.amazon.awssdk.services.bedrockruntime.model.ContentBlock createToolResultBlock(dev.langchain4j.data.message.ToolExecutionResultMessage toolResult)

    • convertToBedRockMessage

      protected software.amazon.awssdk.services.bedrockruntime.model.Message convertToBedRockMessage(dev.langchain4j.data.message.ChatMessage message)

    • createUserMessage

      protected software.amazon.awssdk.services.bedrockruntime.model.Message createUserMessage(dev.langchain4j.data.message.UserMessage message)

    • createAiMessage

      protected software.amazon.awssdk.services.bedrockruntime.model.Message createAiMessage(dev.langchain4j.data.message.AiMessage message)

    • convertToolRequests

      protected List<software.amazon.awssdk.services.bedrockruntime.model.ContentBlock> convertToolRequests(List<dev.langchain4j.agent.tool.ToolExecutionRequest> requests)

    • convertContents

      protected List<software.amazon.awssdk.services.bedrockruntime.model.ContentBlock> convertContents(List<dev.langchain4j.data.message.Content> contents)

    • convertContent

      protected software.amazon.awssdk.services.bedrockruntime.model.ContentBlock convertContent(dev.langchain4j.data.message.Content content)

    • createImageBlock

      protected software.amazon.awssdk.services.bedrockruntime.model.ContentBlock createImageBlock(dev.langchain4j.data.message.ImageContent imageContent)

    • extractToolConfigurationFrom

      protected software.amazon.awssdk.services.bedrockruntime.model.ToolConfiguration extractToolConfigurationFrom(dev.langchain4j.model.chat.request.ChatRequest chatRequest)

    • aiMessageFrom

      protected dev.langchain4j.data.message.AiMessage aiMessageFrom(software.amazon.awssdk.services.bedrockruntime.model.ConverseResponse converseResponse)

    • tokenUsageFrom

      protected dev.langchain4j.model.output.TokenUsage tokenUsageFrom(software.amazon.awssdk.services.bedrockruntime.model.TokenUsage tokenUsage)

    • finishReasonFrom

      protected dev.langchain4j.model.output.FinishReason finishReasonFrom(software.amazon.awssdk.services.bedrockruntime.model.StopReason stopReason)

    • inferenceConfigFrom

      protected software.amazon.awssdk.services.bedrockruntime.model.InferenceConfiguration inferenceConfigFrom(dev.langchain4j.model.chat.request.ChatRequestParameters parameters)

    • additionalRequestModelFieldsFrom

      protected software.amazon.awssdk.core.document.Document additionalRequestModelFieldsFrom(dev.langchain4j.model.chat.request.ChatRequestParameters chatRequestParameters)

    • validate

      protected static void validate(dev.langchain4j.model.chat.request.ChatRequestParameters parameters)

    • dblToFloat

      protected static Float dblToFloat(Double d)

    • extractFilenameWithoutExtensionFromUri

      protected static String extractFilenameWithoutExtensionFromUri(URI uri)