package de.micromata.borgbutler.cache;
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import de.micromata.borgbutler.BorgCommands;
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import de.micromata.borgbutler.config.BorgRepoConfig;
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import de.micromata.borgbutler.config.Configuration;
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import de.micromata.borgbutler.config.ConfigurationHandler;
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import de.micromata.borgbutler.data.Repository;
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import de.micromata.borgbutler.json.borg.BorgArchive;
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import de.micromata.borgbutler.json.borg.BorgFilesystemItem;
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import de.micromata.borgbutler.json.borg.BorgRepoList;
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import org.apache.commons.collections4.CollectionUtils;
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import org.apache.commons.jcs.JCS;
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import org.apache.commons.jcs.access.CacheAccess;
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import org.apache.commons.lang3.ObjectUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.List;
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public class ButlerCache {
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private static Logger log = LoggerFactory.getLogger(ButlerCache.class);
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public static final String CACHE_DIR_NAME = "cache";
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private static ButlerCache instance = new ButlerCache();
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private JCSCache jcsCache;
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private CacheAccess<String, Repository> repoCacheAccess;
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private CacheAccess<String, Repository> repoArchivesCacheAccess;
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private ArchiveFilelistCache archiveFilelistCache;
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public static ButlerCache getInstance() {
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return instance;
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}
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/**
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* @param idOrName
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* @return Repository without list of archives.
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*/
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public Repository getRepository(String idOrName) {
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BorgRepoConfig repoConfig = ConfigurationHandler.getConfiguration().getRepoConfig(idOrName);
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Repository repository = repoCacheAccess.get(repoConfig.getRepo());
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if (repository == null || repository.getLocation() == null) {
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repository = BorgCommands.info(repoConfig);
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repoCacheAccess.put(repoConfig.getRepo(), repository);
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}
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if (repository == null) {
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log.warn("Repo with name '" + idOrName + "' not found.");
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}
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return repository;
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}
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/**
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* @return the list of all repositories without the list of archives.
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*/
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public List<Repository> getAllRepositories() {
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List<Repository> repositories = new ArrayList<>();
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for (BorgRepoConfig repoConfig : ConfigurationHandler.getConfiguration().getRepoConfigs()) {
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Repository repository = getRepository(repoConfig.getName());
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if (repository == null) {
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continue;
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}
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repositories.add(repository);
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}
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return repositories;
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}
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public void clearAllCaches() {
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this.repoCacheAccess.clear();
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log.info("Clearing repositories cache (with included archives)...");
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this.repoArchivesCacheAccess.clear();
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log.info("Clearing cache with file lists of archives...");
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this.archiveFilelistCache.removeAllCacheFiles();
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}
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public void clearRepoCacheAccess() {
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log.info("Clearing repositories cache...");
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this.repoCacheAccess.clear();
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}
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/**
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* @param idOrName
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* @return The repository including all archives.
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*/
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public Repository getRepositoryArchives(String idOrName) {
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BorgRepoConfig repoConfig = ConfigurationHandler.getConfiguration().getRepoConfig(idOrName);
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//ArchiveInfo archiveInfo = BorgCommands.info(repoConfig, repoConfig.getRepo());
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Repository plainRepository = repoArchivesCacheAccess.get(repoConfig.getRepo());
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if (plainRepository != null) {
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return plainRepository;
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}
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plainRepository = repoCacheAccess.get(repoConfig.getRepo());
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if (plainRepository == null) {
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log.warn("Repo with name '" + idOrName + "' not found.");
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return null;
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}
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BorgRepoList repoList = BorgCommands.list(repoConfig);
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if (repoList == null) {
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log.warn("Repo with name '" + idOrName + "' not found.");
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return null;
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}
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Repository repository = ObjectUtils.clone(plainRepository);
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repository.setArchives(repoList.getArchives());
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repoArchivesCacheAccess.put(repoConfig.getRepo(), repository);
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return repository;
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}
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public BorgFilesystemItem[] getArchiveContent(BorgRepoConfig repoConfig, BorgArchive archive) {
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if (archive == null || StringUtils.isBlank(archive.getArchive())) {
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return null;
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}
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BorgFilesystemItem[] items = archiveFilelistCache.load(repoConfig, archive);
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if (items == null) {
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List<BorgFilesystemItem> list = BorgCommands.listArchiveContent(repoConfig, archive);
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if (CollectionUtils.isNotEmpty(list)) {
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archiveFilelistCache.save(repoConfig, archive, list);
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items = list.toArray(new BorgFilesystemItem[0]);
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}
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}
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if (items == null) {
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log.warn("Repo::archiv with name '" + repoConfig.getRepo() + "::" + archive.getArchive() + "' not found.");
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}
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return items;
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}
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public BorgFilesystemItem[] getArchiveContent(File file) {
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return archiveFilelistCache.load(file);
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}
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public void shutdown() {
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JCS.shutdown();
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}
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public File getCacheDir() {
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return jcsCache.getCacheDir();
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}
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private ButlerCache() {
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Configuration configuration = ConfigurationHandler.getConfiguration();
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this.jcsCache = JCSCache.getInstance();
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this.repoCacheAccess = jcsCache.getJCSCache("repositories");
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this.repoArchivesCacheAccess = jcsCache.getJCSCache("repositoriesArchives");
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this.archiveFilelistCache = new ArchiveFilelistCache(getCacheDir(), configuration.getCacheArchiveContentMaxDiscSizeMB());
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}
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}
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