import static java.util.Objects.requireNonNull;

/**
 * System {@link Logger}. Uses provided {@link PrintStream}s or {@link System#err} ones as fallback.
 * This logger is used in case of "early failures" (when no logging may be set up yet).
 */
public class SystemLogger implements Logger {
    private final PrintWriter out;
    private final Level threshold;

    public SystemLogger(@Nullable OutputStream out) {

 *  * The configuration is incapable of carrying the request, such as when the client is configured
 *    to use `H2_PRIOR_KNOWLEDGE` but the URL's scheme is `https:`.
 *  * Preemptive proxy authentication failed.
 *
 * Planning failures are not necessarily fatal. For example, even if we can't DNS lookup the first
 * proxy in a list, looking up a subsequent one may succeed.
 */
internal class FailedPlan(
  e: Throwable,
) : RoutePlanner.Plan {

 * responses coming back in. Typically interceptors add, remove, or transform headers on the request
 * or response.
 *
 * Implementations of this interface throw [IOException] to signal connectivity failures. This
 * includes both natural exceptions such as unreachable servers, as well as synthetic exceptions
 * when responses are of an unexpected type or cannot be decoded.
 *
 * Other exception types cancel the current call:
 *

package org.codelibs.fess.exception;

/**
 * System exception class for the Fess search engine.
 * This exception is thrown when system-level errors occur in the Fess application,
 * such as configuration errors, initialization failures, or critical runtime issues.
 */
public class FessSystemException extends RuntimeException {

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

When submitting code, please make every effort to follow existing conventions
and style in order to keep the code as readable as possible. Please also make
sure your code compiles by running `./gradlew check`. Checkstyle failures
during compilation indicate errors in your style and can be viewed in the
`checkstyle-result.xml` file.

Some general advice

  private void handleException(Throwable throwable) {
    checkNotNull(throwable);

    if (allMustSucceed) {
      // As soon as the first one fails, make that failure the result of the output future.
      // The results of all other inputs are then ignored (except for logging any failures).
      boolean completedWithFailure = setException(throwable);
      if (!completedWithFailure) {

    /**
     * The name of the web configuration associated with this failure URL.
     * Used to identify which web crawling configuration encountered the failure.
     */
    public String webConfigName;

    /**
     * The name of the file configuration associated with this failure URL.
     * Used to identify which file crawling configuration encountered the failure.
     */
    public String fileConfigName;

    /**

/**
 * Represents an exception that occurs during the invocation of a Maven build or command.
 * This exception is typically thrown when there are errors during the execution of a Maven
 * process, such as build failures, plugin errors, or other runtime issues.
 *
 * @since 4.0.0
 */
@Experimental
public class InvokerException extends MavenException {
    /**

    call: Call,
    inetSocketAddress: InetSocketAddress,
    proxy: Proxy,
    protocol: Protocol?,
  ) {
  }

  /**
   * Invoked when a connection attempt fails. This failure is not terminal if further routes are
   * available and failure recovery is enabled.
   *
   * If the `call` uses HTTPS, this will be invoked after [secureConnectStart], otherwise it will
   * invoked after [connectStart].
   */

import java.nio.ByteBuffer;
import java.util.UUID;

/**
 * Handle GUID structure for SMB2/3 durable and persistent handles.
 * Provides a unique identifier for each handle that can be used
 * for reconnection after network failures or server reboots.
 *
 * According to MS-SMB2, the GUID is a 16-byte structure with little-endian
 * byte ordering for the individual components.
 */
public class HandleGuid implements Serializable {