docker-182

package com.citigroup.get.quantum.config.v2.internal.soap;

import java.util.Collections;
import java.util.List;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * <h2>SOAPConfigurationRetrievalManager</h2>
 *
 * <p>Centralized business orchestration manager responsible for executing<br>
 * configuration data extraction strategies against legacy backend targets.<br>
 * This manager decouples incoming SOAP endpoint envelopes from core internal<br>
 * retrieval mechanics, wrapping execution exceptions in functional fallback<br>
 * boundaries and providing clean execution tracking logging.</p>
 *
 * <p><b>Architectural Context &amp; High-Concurrency Profiles:</b><br>
 * Modernized and stabilized for native execution within <b>Java 21</b> and<br>
 * <b>Spring 6.1</b> environments. To maximize request processing throughput<br>
 * when running inside non-blocking environments powered by Java 21 Virtual<br>
 * Threads, this class maintains a completely stateless execution paradigm.<br>
 * Dependencies are isolated to localized method frames, ensuring thread<br>
 * safety across concurrent worker tasks without invoking expensive heap<br>
 * synchronization locks or blocking states.</p>
 *
 * <p><b>Exception Handling &amp; Fallback Constraints:</b><br>
 * Defensive programming patterns are embedded across all collection retrieval<br>
 * vectors. If a downstream lookup operation suffers a connection fault, an<br>
 * invalid key criteria argument, or an unexpected runtime failure, the engine<br>
 * safely catches the underlying exception, routes the stack details to an<br>
 * internal asynchronous Log4j2 tracing log, and returns empty collections<br>
 * via {@link Collections#emptyList()} rather than allowing raw null values or<br>
 * unhandled bubbles to disrupt active consumer loops.</p>
 *
 * <p>The class exposes the following public API processing vectors:<br>
 * <ul>
 * <li>{@code getInstance()}: Thread-safe global access provider returning<br>
 * the singleton orchestration instance of the manager subsystem.</li>
 * <li>{@code getProperty(GetProperty req)}: Extracts a singular property<br>
 * metadata object matching the designated request criteria.</li>
 * <li>{@code getProperties(GetProperties req)}: Transforms and resolves a<br>
 * specified collection array of targeted configuration tokens.</li>
 * <li>{@code getGroupOfProperties(GetGroupOfProperties req)}: Extracts a<br>
 * comprehensive system property configuration context bundle.</li>
 * <li>{@code getAllProperties(GetAllProperties req)}: Scans and aggregates<br>
 * the entirety of active property matrices assigned to a workspace.</li>
 * <li>{@code getFile(GetFile req)}: Specialized payload vector dedicated to<br>
 * streaming binary or raw flat file configuration resources down the wire.</li>
 * </ul>
 *
 * @since CPLS Migration 2.0 (Java 21 / Spring 6.1 Baseline)
 * @see ObjectFactory
 * @see Property
 * @see GetProperty
 * @see GetProperties
 * @see GetGroupOfProperties
 * @see GetAllProperties
 * @see GetFile
 */
public class SOAPConfigurationRetrievalManager {

    private static final Logger logger = LogManager.getLogger(SOAPConfigurationRetrievalManager.class);

    private static final SOAPConfigurationRetrievalManager INSTANCE = new SOAPConfigurationRetrievalManager();

    private SOAPConfigurationRetrievalManager() {
        // Enforce private construction for singleton integrity
    }

    public static SOAPConfigurationRetrievalManager getInstance() {
        return INSTANCE;
    }

    // Business orchestration methods follow...
}