* Lesser General Public License for more details.
 */
package jcifs.internal.smb2.persistent;

import java.io.Serializable;
import java.util.Arrays;

import jcifs.internal.smb2.lease.Smb2LeaseKey;

/**
 * Information about a durable or persistent SMB handle.
 * This class holds all the necessary information to reconnect
 * a handle after network failures or server reboots.
 */

import org.slf4j.LoggerFactory;

import jcifs.CIFSException;
import jcifs.internal.smb2.lease.DirectoryCacheScope;
import jcifs.internal.smb2.lease.DirectoryLeaseManager;
import jcifs.internal.smb2.lease.Smb2LeaseKey;
import jcifs.internal.smb2.lease.Smb2LeaseState;

/**
 * Extension methods for SmbFile to support directory leasing functionality.
 *
 * This utility class provides static methods that enhance SmbFile operations with

/**
 * Cache entry for directory contents with thread-safe operations
 */
public class DirectoryCacheEntry {

    private final String directoryPath;
    private final Smb2LeaseKey leaseKey;
    private final long createTime;
    private volatile long lastUpdateTime;
    private volatile long lastAccessTime;

    private final ConcurrentHashMap<String, FileInfo> children;

    /**
     * Change notification handle
     */
    public static class ChangeNotificationHandle {
        private final String directoryPath;
        private final Smb2LeaseKey leaseKey;
        private final SmbFile directoryFile;
        private volatile boolean active;
        private CompletableFuture<Void> notificationFuture;

        /**

/**
 * Unit tests for DirectoryCacheEntry
 */
public class DirectoryCacheEntryTest {

    private DirectoryCacheEntry entry;
    private Smb2LeaseKey leaseKey;
    private String directoryPath = "/test/dir";

    @BeforeEach
    public void setUp() {
        leaseKey = new Smb2LeaseKey();
        entry = new DirectoryCacheEntry(directoryPath, leaseKey, DirectoryCacheScope.IMMEDIATE_CHILDREN);
    }

    @Test

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

import jcifs.CIFSContext;
import jcifs.internal.smb2.lease.Smb2LeaseKey;
import jcifs.internal.smb2.persistent.HandleGuid;
import jcifs.internal.smb2.persistent.HandleInfo;
import jcifs.internal.smb2.persistent.HandleType;
import jcifs.internal.smb2.persistent.PersistentHandleManager;

/**

     * @param requestedState the requested lease state
     * @param parentLeaseKey the parent lease key (can be null)
     * @param epoch the lease epoch
     */
    public void addLeaseV2Context(Smb2LeaseKey leaseKey, int requestedState, Smb2LeaseKey parentLeaseKey, int epoch) {
        LeaseV2CreateContextRequest leaseContext = new LeaseV2CreateContextRequest(leaseKey, requestedState, parentLeaseKey, epoch);
        addCreateContext(leaseContext);

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantReadWriteLock;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSContext;
import jcifs.internal.smb2.lease.Smb2LeaseKey;

/**
 * Manager for persistent and durable SMB handles.
 *
 * This class provides:
 * - Handle lifecycle management
 * - Persistent storage for persistent handles
 * - Expiration tracking for durable handles

        private volatile long lastAccessTime;
        private final Smb2LeaseKey leaseKey;  // Associated lease if any
        private volatile boolean reconnecting;
        private transient SmbFile file;  // Not serialized
        
        public HandleInfo(String path, HandleGuid guid, byte[] fileId, 
                         HandleType type, long timeout, Smb2LeaseKey leaseKey) {
            this.path = path;

#### 1.1 Core Lease Infrastructure
```
Package: jcifs.internal.smb2.lease
├── Smb2LeaseBreak.java          - Lease break notification handling
├── Smb2LeaseContext.java        - Lease context for create requests
├── Smb2LeaseKey.java            - 16-byte lease key management
├── Smb2LeaseState.java          - Lease state flags (R, H, W)
└── LeaseManager.java            - Central lease management
```

#### 1.2 Implementation Tasks