Class MessageConverter

java.lang.Object
com.google.adk.models.springai.MessageConverter
public class MessageConverter extends Object
Converts between ADK and Spring AI message formats.

This converter handles the translation between ADK's Content/Part format (based on Google's genai.types) and Spring AI's Message/ChatResponse format. It supports:

  • Text content in all message types
  • Tool/function calls in assistant messages
  • System instructions and configuration options

Note: Media attachments and tool responses are currently not supported due to Spring AI 1.1.0 API limitations (protected/private constructors). These will be added once Spring AI provides public APIs for these features.

  • Constructor Details

    • MessageConverter

      public MessageConverter(com.fasterxml.jackson.databind.ObjectMapper objectMapper)

  • Method Details

    • toLlmPrompt

      public org.springframework.ai.chat.prompt.Prompt toLlmPrompt(LlmRequest llmRequest)
      Converts an ADK LlmRequest to a Spring AI Prompt.
      Parameters:
      llmRequest - The ADK request to convert
      Returns:
      A Spring AI Prompt

    • getToolRegistry

      public Map<String, ToolConverter.ToolMetadata> getToolRegistry(LlmRequest llmRequest)
      Gets tool registry from ADK tools for internal tracking.
      Parameters:
      llmRequest - The ADK request containing tools
      Returns:
      Map of tool metadata for tracking available tools

    • toLlmResponse

      public LlmResponse toLlmResponse(org.springframework.ai.chat.model.ChatResponse chatResponse)
      Converts a Spring AI ChatResponse to an ADK LlmResponse.
      Parameters:
      chatResponse - The Spring AI response to convert
      Returns:
      An ADK LlmResponse

    • toLlmResponse

      public LlmResponse toLlmResponse(org.springframework.ai.chat.model.ChatResponse chatResponse, boolean isStreaming)
      Converts a Spring AI ChatResponse to an ADK LlmResponse with streaming context.
      Parameters:
      chatResponse - The Spring AI response to convert
      isStreaming - Whether this is part of a streaming response
      Returns:
      An ADK LlmResponse