import org.codelibs.core.concurrent.CommonPoolUtil;
import org.codelibs.core.lang.ThreadUtil;

/**
 * The abstract helper for configuration.
 *
 * This class provides a basic framework for managing configurations that can be reloaded.
 * It includes functionality for updating configurations in a separate thread and controlling the reloading interval.
 */
public abstract class AbstractConfigHelper {

    /**
     * Default constructor.
     */

/**
 * Exception thrown when a dictionary has expired and is no longer valid.
 * This runtime exception indicates that a dictionary file or dictionary data
 * has exceeded its lifetime and should be refreshed or reloaded.
 */
public class DictionaryExpiredException extends RuntimeException {

    /** Serial version UID for serialization. */
    private static final long serialVersionUID = 1L;

    /**

        append("^(?:")
        append(
          listOf(
            "Inaccessible trust store",
            "trustStore is",
            "Reload the trust store",
            "Reload trust certs",
            "Reloaded",
            "adding as trusted certificates",
            "Ignore disabled cipher suite",
            "Ignore unsupported cipher suite",
          ).joinToString(separator = "|"),
        )
        append(").*")

- The JWT authenticator configuration set via the `--authentication-config` flag is now dynamically reloaded as the file changes on disk. ([#123525](https://github.com/kubernetes/kubernetes/pull/123525), [@enj](https://github.com/enj))

- A new API server flag `--encryption-provider-config-automatic-reload` was added to control when the encryption config should be automatically reloaded without needing to restart the server.  All KMS plugins are now merged into a single healthz check at `/healthz/kms-providers` when reload is enabled, or when only KMS v2 plugins are used. ([#113529](https://github.com/kubernetes/kubernetes/pull/113529),...

         */
        public JvmClassesObj() {
            // Default constructor
        }

        /** Currently loaded classes */
        public long loaded;
        /** Total classes loaded since JVM start */
        public long total_loaded;
        /** Total classes unloaded */
        public long unloaded;
    }

    /**
     * Data transfer object representing process statistics.
     */

- CA, certificate and key bundles for the `generic-apiserver` based servers will be reloaded immediately after the files are changed. ([#104102](https://github.com/kubernetes/kubernetes/pull/104102), [@tnqn](https://github.com/tnqn))

     * won't be cleared as long as the enum constant is referenced somewhere, and the enum constant
     * is referenced somewhere for as long as the enum class is loaded. *Maybe in theory* the enum
     * class could be unloaded after the above call to `getEnumConstants` but before we call
     * `get()`, but that is vanishingly unlikely.
     */

        buf.append("},");
        final Classes classes = jvmStats.getClasses();
        buf.append("\"classes\":{");
        append(buf, "loaded", () -> classes.getLoadedClassCount()).append(',');
        append(buf, "total_loaded", () -> classes.getTotalLoadedClassCount()).append(',');
        append(buf, "unloaded", () -> classes.getUnloadedClassCount());
        buf.append("},");
        append(buf, "uptime", () -> jvmStats.getUptime().getMillis());

    //                                                                           =========
    // keeping parsed request parameters, normal texts or uploaded files
    // keys are requested parameter names (treated as field name here)
    protected Map<String, Object> elementsAll; // lazy-loaded, then after not null
    protected Map<String, MultipartFormFile> elementsFile; // me too
    protected Map<String, String[]> elementsText; // me too