import jakarta.annotation.Resource;
import jakarta.servlet.http.HttpServletRequest;

/**
 * Client class for RAG (Retrieval-Augmented Generation) chat functionality.
 *
 * Orchestrates the multi-phase RAG workflow including session management,
 * document search, and delegation to LlmClientManager for LLM operations.
 * Prompt construction and LLM-specific logic is handled by LlmClient implementations.
 *
 * @author FessProject
 */

* vSphere Cloud Provider Implementation  ([#24703](https://github.com/kubernetes/kubernetes/pull/24703), [@dagnello](https://github.com/dagnello))
* Added JobTemplate, a preliminary step for ScheduledJob and Workflow ([#21675](https://github.com/kubernetes/kubernetes/pull/21675), [@soltysh](https://github.com/soltysh))
* Openstack provider ([#21737](https://github.com/kubernetes/kubernetes/pull/21737), [@zreigz](https://github.com/zreigz))

import jakarta.servlet.http.HttpSession;

/**
 * Abstract base class for LLM client implementations.
 *
 * Provides shared infrastructure (HTTP client, availability checking) and
 * default implementations of RAG workflow methods with injectable prompt templates.
 * Subclasses implement provider-specific chat/streamChat and checkAvailabilityNow.
 */
public abstract class AbstractLlmClient implements LlmClient {