From e0c6a21fe9bfb01237fd145064f0af309879a9fb Mon Sep 17 00:00:00 2001 From: Keuin Date: Wed, 13 Jan 2021 17:47:20 +0800 Subject: Incremental backup now works (tested, but not thoroughly) --- .../backup/method/ConfiguredBackupMethod.java | 14 +++++ .../method/ConfiguredIncrementalBackupMethod.java | 66 +++++++++++++++++----- .../method/ConfiguredPrimitiveBackupMethod.java | 42 ++++++-------- 3 files changed, 83 insertions(+), 39 deletions(-) (limited to 'src/main/java/com/keuin/kbackupfabric/operation/backup/method') diff --git a/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredBackupMethod.java b/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredBackupMethod.java index b1b8d90..bb80c80 100644 --- a/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredBackupMethod.java +++ b/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredBackupMethod.java @@ -20,4 +20,18 @@ public interface ConfiguredBackupMethod { boolean restore() throws IOException; + /** + * Create backup save directory and do some essential initialization before the backup process. + * + * @return false if failed, then the backup process won't proceed. + */ + boolean touch(); + + /** + * Get the used backup file name. + * + * @return the file name. + */ + String getBackupFileName(); + } diff --git a/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredIncrementalBackupMethod.java b/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredIncrementalBackupMethod.java index 0201d18..b5d2463 100644 --- a/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredIncrementalBackupMethod.java +++ b/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredIncrementalBackupMethod.java @@ -1,52 +1,92 @@ package com.keuin.kbackupfabric.operation.backup.method; import com.keuin.kbackupfabric.operation.backup.feedback.IncrementalBackupFeedback; +import com.keuin.kbackupfabric.util.FilesystemUtil; +import com.keuin.kbackupfabric.util.PrintUtil; import com.keuin.kbackupfabric.util.backup.incremental.ObjectCollection; import com.keuin.kbackupfabric.util.backup.incremental.ObjectCollectionFactory; import com.keuin.kbackupfabric.util.backup.incremental.ObjectCollectionSerializer; import com.keuin.kbackupfabric.util.backup.incremental.identifier.Sha256Identifier; import com.keuin.kbackupfabric.util.backup.incremental.manager.IncrementalBackupStorageManager; -import com.keuin.kbackupfabric.util.backup.name.IncrementalBackupFileNameEncoder; import java.io.File; import java.io.IOException; import java.nio.file.Paths; -import java.time.LocalDateTime; +import java.util.Arrays; +import java.util.HashSet; public class ConfiguredIncrementalBackupMethod implements ConfiguredBackupMethod { - private final String backupFileName; + private final String backupIndexFileName; private final String levelPath; - private final String backupSavePath; + private final String backupIndexFileSaveDirectory; + private final String backupBaseDirectory; - public ConfiguredIncrementalBackupMethod(String backupFileName, String levelPath, String backupSavePath) { - this.backupFileName = backupFileName; + public ConfiguredIncrementalBackupMethod(String backupIndexFileName, String levelPath, String backupIndexFileSaveDirectory, String backupBaseDirectory) { + this.backupIndexFileName = backupIndexFileName; this.levelPath = levelPath; - this.backupSavePath = backupSavePath; + this.backupIndexFileSaveDirectory = backupIndexFileSaveDirectory; + this.backupBaseDirectory = backupBaseDirectory; } @Override public IncrementalBackupFeedback backup() throws IOException { - String customBackupName = new IncrementalBackupFileNameEncoder().decode(backupFileName).customName; - String backupIndexFileName = new IncrementalBackupFileNameEncoder().encode(customBackupName, LocalDateTime.now()); File levelPathFile = new File(levelPath); // construct incremental backup index + PrintUtil.info("Hashing files..."); ObjectCollection collection = new ObjectCollectionFactory<>(Sha256Identifier.getFactory()) - .fromDirectory(levelPathFile); + .fromDirectory(levelPathFile, new HashSet<>(Arrays.asList("session.lock", "kbackup_metadata"))); // update storage - IncrementalBackupStorageManager storageManager = new IncrementalBackupStorageManager(Paths.get(backupSavePath)); + PrintUtil.info("Copying files..."); + IncrementalBackupStorageManager storageManager = new IncrementalBackupStorageManager(Paths.get(backupBaseDirectory)); int filesAdded = storageManager.addObjectCollection(collection, levelPathFile); // save index file - ObjectCollectionSerializer.toFile(collection, new File(backupSavePath, backupIndexFileName)); + PrintUtil.info("Saving index file..."); + ObjectCollectionSerializer.toFile(collection, new File(backupIndexFileSaveDirectory, backupIndexFileName)); + // return result + PrintUtil.info("Incremental backup finished."); return new IncrementalBackupFeedback(filesAdded >= 0, filesAdded); } @Override public boolean restore() throws IOException { - return false; + // load collection + PrintUtil.info("Loading file list..."); + ObjectCollection collection = ObjectCollectionSerializer.fromFile( + new File(backupIndexFileSaveDirectory, backupIndexFileName) + ); + + // delete old level + File levelPathFile = new File(levelPath); + PrintUtil.info("Deleting old level..."); + if (!FilesystemUtil.forceDeleteDirectory(levelPathFile)) { + PrintUtil.info("Failed to delete old level!"); + return false; + } + + // restore file + PrintUtil.info("Copying files..."); + IncrementalBackupStorageManager storageManager = new IncrementalBackupStorageManager(Paths.get(backupBaseDirectory)); + int restoreObjectCount = storageManager.restoreObjectCollection(collection, levelPathFile); + + PrintUtil.info(String.format("%d file(s) restored.", restoreObjectCount)); + return true; + } + + @Override + public boolean touch() { + File baseDirectoryFile = new File(backupBaseDirectory); + return baseDirectoryFile.isDirectory() || baseDirectoryFile.mkdir(); + } + + @Override + public String getBackupFileName() { + return backupIndexFileName; } + + } diff --git a/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredPrimitiveBackupMethod.java b/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredPrimitiveBackupMethod.java index c3013e9..1c3c9f6 100644 --- a/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredPrimitiveBackupMethod.java +++ b/src/main/java/com/keuin/kbackupfabric/operation/backup/method/ConfiguredPrimitiveBackupMethod.java @@ -15,8 +15,6 @@ import java.io.IOException; import java.nio.file.Paths; import java.time.LocalDateTime; -import static org.apache.commons.io.FileUtils.forceDelete; - public class ConfiguredPrimitiveBackupMethod implements ConfiguredBackupMethod { private final String backupFileName; @@ -56,37 +54,17 @@ public class ConfiguredPrimitiveBackupMethod implements ConfiguredBackupMethod { public boolean restore() throws IOException { // Delete old level PrintUtil.info("Server stopped. Deleting old level ..."); - File levelDirFile = new File(levelPath); - long startTime = System.currentTimeMillis(); - - int failedCounter = 0; - final int MAX_RETRY_TIMES = 20; - while (failedCounter < MAX_RETRY_TIMES) { - System.gc(); - if (!levelDirFile.delete() && levelDirFile.exists()) { - System.gc(); - forceDelete(levelDirFile); // Try to force delete. - } - if (!levelDirFile.exists()) - break; - ++failedCounter; - try { - Thread.sleep(500); - } catch (InterruptedException ignored) { - } - } - if (levelDirFile.exists()) { - PrintUtil.error(String.format("Cannot restore: failed to delete old level %s .", levelDirFile.getName())); + if (!FilesystemUtil.forceDeleteDirectory(new File(levelPath))) { + PrintUtil.info("Failed to delete old level!"); return false; } + // TODO: Refactor this to the concrete BackupMethod. // Decompress archive PrintUtil.info("Decompressing archived level ..."); ZipUtil.unzip(Paths.get(backupSavePath, backupFileName).toString(), levelPath, false); - long endTime = System.currentTimeMillis(); - PrintUtil.info(String.format("Restore complete! (%.2fs) Please restart the server manually.", (endTime - startTime) / 1000.0)); - PrintUtil.info("If you want to restart automatically after restoring, please check the manual at: https://github.com/keuin/KBackup-Fabric/blob/master/README.md"); + // try { // Thread.sleep(1000); @@ -95,4 +73,16 @@ public class ConfiguredPrimitiveBackupMethod implements ConfiguredBackupMethod { return true; } + + @Override + public boolean touch() { + File backupSaveDirectoryFile = new File(backupSavePath); + return backupSaveDirectoryFile.isDirectory() || backupSaveDirectoryFile.mkdir(); + } + + @Override + public String getBackupFileName() { + return backupFileName; + } + } -- cgit v1.2.3