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Merge pull request #5359 from Sleet01/RFE_5261_rotating_autosaves
Implements #5261: Simple rotating per-round save file system.
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114 changes: 114 additions & 0 deletions
114
megamek/src/megamek/common/service/AutosaveService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| /* | ||
| * Copyright (c) 2024 - The MegaMek Team. All Rights Reserved. | ||
| * | ||
| * This file is part of MegaMek. | ||
| * | ||
| * MegaMek is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * MegaMek is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with MegaMek. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package megamek.common.service; | ||
|
|
||
| import megamek.MMConstants; | ||
| import megamek.codeUtilities.StringUtility; | ||
| import megamek.common.annotations.Nullable; | ||
| import megamek.common.options.OptionsConstants; | ||
| import megamek.common.preference.PreferenceManager; | ||
| import megamek.server.GameManager; | ||
| import org.apache.logging.log4j.LogManager; | ||
|
|
||
| import java.io.File; | ||
| import java.nio.file.Paths; | ||
| import java.time.LocalDateTime; | ||
| import java.time.format.DateTimeFormatter; | ||
| import java.util.Arrays; | ||
| import java.util.Comparator; | ||
| import java.util.List; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| public class AutosaveService { | ||
| public final String FILENAME_FORMAT = "Round-%d-autosave%s.sav.gz"; | ||
|
|
||
| //region Constructors | ||
| public AutosaveService() { | ||
|
|
||
| } | ||
| //endregion Constructors | ||
|
|
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| public void performRollingAutosave(final GameManager gameManager) { | ||
| final int maxNumberAutosaves = gameManager.getGame().getOptions().intOption(OptionsConstants.BASE_MAX_NUMBER_ROUND_SAVES); | ||
| if (maxNumberAutosaves > 0) { | ||
| try { | ||
| final String fileName = getAutosaveFilename(gameManager); | ||
| if (!StringUtility.isNullOrBlank(fileName)) { | ||
| gameManager.saveGame(fileName, gameManager.getGame().getOptions().booleanOption(OptionsConstants.BASE_AUTOSAVE_MSG)); | ||
| } else { | ||
| LogManager.getLogger().error("Unable to perform an autosave because of a null or empty file name"); | ||
| } | ||
| } catch (Exception ex) { | ||
| LogManager.getLogger().error("", ex); | ||
| } | ||
| } | ||
| } | ||
|
|
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| private @Nullable String getAutosaveFilename(final GameManager gameManager) { | ||
| // Get all autosave files in ascending order of date creation | ||
| final String savesDirectoryPath = MMConstants.SAVEGAME_DIR; | ||
| final File folder = new File(savesDirectoryPath); | ||
| final File[] files = folder.listFiles(); | ||
| if (files != null) { | ||
| final List<File> autosaveFiles = Arrays.stream(files) | ||
| .filter(f -> f.getName().startsWith("Round-")) | ||
| .sorted(Comparator.comparing(File::lastModified)) | ||
| .collect(Collectors.toList()); | ||
|
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| // Delete older autosave files if needed | ||
| final int maxNumberAutosaves = gameManager.getGame().getOptions().intOption(OptionsConstants.BASE_MAX_NUMBER_ROUND_SAVES); | ||
|
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| int index = 0; | ||
| while ((autosaveFiles.size() >= maxNumberAutosaves) && (autosaveFiles.size() > index)) { | ||
| if (autosaveFiles.get(index).delete()) { | ||
| autosaveFiles.remove(index); | ||
| } else { | ||
| LogManager.getLogger().error("Unable to delete file " + autosaveFiles.get(index).getName()); | ||
| index++; | ||
| } | ||
| } | ||
|
|
||
| // Find a unique name for this autosave | ||
| String fileName = null; | ||
|
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| boolean repeatedName = true; | ||
| index = 1; | ||
| String localDateTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern( | ||
| PreferenceManager.getClientPreferences().getStampFormat())); | ||
| while (repeatedName) { | ||
| fileName = String.format( | ||
| FILENAME_FORMAT, | ||
| gameManager.getGame().getRoundCount(), | ||
| localDateTime | ||
| ); | ||
|
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||
| repeatedName = false; | ||
| for (final File file : autosaveFiles) { | ||
| if (file.getName().compareToIgnoreCase(fileName) == 0) { | ||
| repeatedName = true; | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| // Don't prepend the save dir as we're going to let saveGame handle that. | ||
| return Paths.get(fileName).toString(); | ||
| } | ||
| return null; | ||
| } | ||
| } |
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