| /* |
| * Copyright (C) 2018, Konrad Windszus <konrad_w@gmx.de> and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| package org.eclipse.jgit.internal.transport.http; |
| |
| import java.nio.file.Path; |
| |
| import org.eclipse.jgit.transport.HttpConfig; |
| import org.eclipse.jgit.util.LRUMap; |
| |
| /** |
| * A cache of all known cookie files ({@link NetscapeCookieFile}). May contain |
| * at most {@code n} entries, where the least-recently used one is evicted as |
| * soon as more entries are added. The maximum number of entries (={@code n}) |
| * can be set via the git config key {@code http.cookieFileCacheLimit}. By |
| * default it is set to 10. |
| * <p> |
| * The cache is global, i.e. it is shared among all consumers within the same |
| * Java process. |
| * |
| * @see NetscapeCookieFile |
| * |
| */ |
| public class NetscapeCookieFileCache { |
| |
| private final LRUMap<Path, NetscapeCookieFile> cookieFileMap; |
| |
| private static NetscapeCookieFileCache instance; |
| |
| private NetscapeCookieFileCache(HttpConfig config) { |
| cookieFileMap = new LRUMap<>(config.getCookieFileCacheLimit(), |
| config.getCookieFileCacheLimit()); |
| } |
| |
| /** |
| * Get singleton instance |
| * |
| * @param config |
| * the config which defines the limit for this cache |
| * @return the singleton instance of the cookie file cache. If the cache has |
| * already been created the given config is ignored (even if it |
| * differs from the config, with which the cache has originally been |
| * created) |
| */ |
| public static NetscapeCookieFileCache getInstance(HttpConfig config) { |
| if (instance == null) { |
| return new NetscapeCookieFileCache(config); |
| } |
| return instance; |
| } |
| |
| /** |
| * Get a cache entry |
| * |
| * @param path |
| * the path of the cookie file to retrieve |
| * @return the cache entry belonging to the requested file |
| */ |
| public NetscapeCookieFile getEntry(Path path) { |
| if (!cookieFileMap.containsKey(path)) { |
| synchronized (NetscapeCookieFileCache.class) { |
| if (!cookieFileMap.containsKey(path)) { |
| cookieFileMap.put(path, new NetscapeCookieFile(path)); |
| } |
| } |
| } |
| return cookieFileMap.get(path); |
| } |
| |
| } |