Class ZCL_LLM_CLIENT_OPENROUTER

AI Generated documentation.

Overview

The zcl_llm_client_openrouter is a specialized ABAP class for interacting with the OpenRouter AI service. It inherits from a base LLM client class and provides implementation-specific methods for authentication, HTTP client configuration, and chat endpoint management. The class is designed to be created privately and accessed through the get_client class method, ensuring controlled instantiation.

Public methods include:

• get_client(): Static method to create and return an instance of the OpenRouter LLM client
• constructor(): Initializes the client with configuration parameters

Dependencies

• zcl_llm_client_base: Base class for LLM clients
• zcl_llm_http_client_wrapper: HTTP client wrapper for network communication
• zcl_llm_common: Utility class for common LLM operations
• BADI implementation for encryption

Details

The class implements several key methods to customize OpenRouter-specific interactions:

classDiagram
    zcl_llm_client_base <|-- zcl_llm_client_openrouter
    class zcl_llm_client_openrouter {
        +get_client()
        -get_http_client()
        -get_chat_endpoint()
        -set_auth()
        -create_structured_output()
    }

Key implementation details:

• Adds custom HTTP headers for OpenRouter tracking (HTTP-Referer and X-Title)
• Supports encrypted authentication through a BADI encryption implementation
• Uses a Bearer token for authorization
• Creates a custom structured output object specific to OpenRouter responses

Authentication flow:

1. Decrypt authentication token if encrypted
2. Set Authorization header with Bearer token
3. Configure HTTP client with specific OpenRouter headers

The class follows a strategy of encapsulating provider-specific logic while maintaining a consistent interface through the base LLM client class.