4a5d0ae3fa
Previously were not being deleted due to a bug (input stream left open, file not deletable).
813 lines
26 KiB
Java
813 lines
26 KiB
Java
/*
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GriefPrevention Server Plugin for Minecraft
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Copyright (C) 2012 Ryan Hamshire
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package me.ryanhamshire.GriefPrevention;
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import java.io.*;
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import java.nio.charset.Charset;
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import java.text.DateFormat;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.*;
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import java.util.regex.Matcher;
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import org.bukkit.*;
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import com.google.common.io.Files;
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//manages data stored in the file system
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public class FlatFileDataStore extends DataStore
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{
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private final static String claimDataFolderPath = dataLayerFolderPath + File.separator + "ClaimData";
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private final static String nextClaimIdFilePath = claimDataFolderPath + File.separator + "_nextClaimID";
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private final static String schemaVersionFilePath = dataLayerFolderPath + File.separator + "_schemaVersion";
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static boolean hasData()
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{
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File claimsDataFolder = new File(claimDataFolderPath);
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return claimsDataFolder.exists();
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}
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//initialization!
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FlatFileDataStore() throws Exception
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{
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this.initialize();
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}
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@Override
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void initialize() throws Exception
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{
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//ensure data folders exist
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boolean newDataStore = false;
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File playerDataFolder = new File(playerDataFolderPath);
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File claimDataFolder = new File(claimDataFolderPath);
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if(!playerDataFolder.exists() || !claimDataFolder.exists())
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{
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newDataStore = true;
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playerDataFolder.mkdirs();
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claimDataFolder.mkdirs();
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}
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//if there's no data yet, then anything written will use the schema implemented by this code
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if(newDataStore)
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{
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this.setSchemaVersion(DataStore.latestSchemaVersion);
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}
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//load group data into memory
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File [] files = playerDataFolder.listFiles();
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for(int i = 0; i < files.length; i++)
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{
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File file = files[i];
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if(!file.isFile()) continue; //avoids folders
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//all group data files start with a dollar sign. ignoring the rest, which are player data files.
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if(!file.getName().startsWith("$")) continue;
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String groupName = file.getName().substring(1);
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if(groupName == null || groupName.isEmpty()) continue; //defensive coding, avoid unlikely cases
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BufferedReader inStream = null;
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try
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{
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inStream = new BufferedReader(new FileReader(file.getAbsolutePath()));
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String line = inStream.readLine();
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int groupBonusBlocks = Integer.parseInt(line);
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this.permissionToBonusBlocksMap.put(groupName, groupBonusBlocks);
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}
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catch(Exception e)
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{
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StringWriter errors = new StringWriter();
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e.printStackTrace(new PrintWriter(errors));
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GriefPrevention.AddLogEntry(errors.toString(), CustomLogEntryTypes.Exception);
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}
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try
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{
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if(inStream != null) inStream.close();
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}
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catch(IOException exception) {}
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}
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//load next claim number from file
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File nextClaimIdFile = new File(nextClaimIdFilePath);
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if(nextClaimIdFile.exists())
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{
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BufferedReader inStream = null;
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try
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{
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inStream = new BufferedReader(new FileReader(nextClaimIdFile.getAbsolutePath()));
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//read the id
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String line = inStream.readLine();
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//try to parse into a long value
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this.nextClaimID = Long.parseLong(line);
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}
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catch(Exception e){ }
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try
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{
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if(inStream != null) inStream.close();
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}
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catch(IOException exception) {}
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}
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//if converting up from schema version 0, rename player data files using UUIDs instead of player names
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//get a list of all the files in the claims data folder
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if(this.getSchemaVersion() == 0)
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{
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files = playerDataFolder.listFiles();
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ArrayList<String> namesToConvert = new ArrayList<String>();
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for(File playerFile : files)
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{
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namesToConvert.add(playerFile.getName());
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}
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//resolve and cache as many as possible through various means
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try
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{
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UUIDFetcher fetcher = new UUIDFetcher(namesToConvert);
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fetcher.call();
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}
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catch(Exception e)
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{
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GriefPrevention.AddLogEntry("Failed to resolve a batch of names to UUIDs. Details:" + e.getMessage());
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e.printStackTrace();
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}
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//rename files
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for(File playerFile : files)
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{
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String currentFilename = playerFile.getName();
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//if corrected casing and a record already exists using the correct casing, skip this one
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String correctedCasing = UUIDFetcher.correctedNames.get(currentFilename);
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if(correctedCasing != null && !currentFilename.equals(correctedCasing))
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{
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File correctedCasingFile = new File(playerDataFolder.getPath() + File.separator + correctedCasing);
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if(correctedCasingFile.exists())
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{
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continue;
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}
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}
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//try to convert player name to UUID
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UUID playerID = null;
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try
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{
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playerID = UUIDFetcher.getUUIDOf(currentFilename);
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//if successful, rename the file using the UUID
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if(playerID != null)
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{
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playerFile.renameTo(new File(playerDataFolder, playerID.toString()));
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}
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}
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catch(Exception ex){ }
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}
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}
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//load claims data into memory
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//get a list of all the files in the claims data folder
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files = claimDataFolder.listFiles();
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for(int i = 0; i < files.length; i++)
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{
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if(files[i].isFile()) //avoids folders
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{
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//skip any file starting with an underscore, to avoid special files not representing land claims
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if(files[i].getName().startsWith("_")) continue;
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//the filename is the claim ID. try to parse it
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long claimID;
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try
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{
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claimID = Long.parseLong(files[i].getName());
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}
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//because some older versions used a different file name pattern before claim IDs were introduced,
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//those files need to be "converted" by renaming them to a unique ID
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catch(Exception e)
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{
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claimID = this.nextClaimID;
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this.incrementNextClaimID();
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File newFile = new File(claimDataFolderPath + File.separator + String.valueOf(this.nextClaimID));
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files[i].renameTo(newFile);
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files[i] = newFile;
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}
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BufferedReader inStream = null;
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try
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{
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Claim topLevelClaim = null;
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inStream = new BufferedReader(new FileReader(files[i].getAbsolutePath()));
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String line = inStream.readLine();
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while(line != null)
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{
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//skip any SUB:### lines from previous versions
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if(line.toLowerCase().startsWith("sub:"))
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{
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line = inStream.readLine();
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}
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//skip any UUID lines from previous versions
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Matcher match = uuidpattern.matcher(line.trim());
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if(match.find())
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{
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line = inStream.readLine();
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}
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//first line is lesser boundary corner location
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Location lesserBoundaryCorner = this.locationFromString(line);
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//second line is greater boundary corner location
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line = inStream.readLine();
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Location greaterBoundaryCorner = this.locationFromString(line);
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//third line is owner name
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line = inStream.readLine();
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String ownerName = line;
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UUID ownerID = null;
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if(ownerName.isEmpty() || ownerName.startsWith("--"))
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{
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ownerID = null; //administrative land claim or subdivision
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}
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else if(this.getSchemaVersion() == 0)
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{
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try
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{
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ownerID = UUIDFetcher.getUUIDOf(ownerName);
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}
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catch(Exception ex)
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{
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GriefPrevention.AddLogEntry("Couldn't resolve this name to a UUID: " + ownerName + ".");
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GriefPrevention.AddLogEntry(" Converted land claim to administrative @ " + lesserBoundaryCorner.toString());
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}
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}
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else
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{
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try
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{
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ownerID = UUID.fromString(ownerName);
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}
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catch(Exception ex)
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{
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GriefPrevention.AddLogEntry("Error - this is not a valid UUID: " + ownerName + ".");
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GriefPrevention.AddLogEntry(" Converted land claim to administrative @ " + lesserBoundaryCorner.toString());
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}
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}
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//fourth line is list of builders
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line = inStream.readLine();
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String [] builderNames = line.split(";");
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builderNames = this.convertNameListToUUIDList(builderNames);
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//fifth line is list of players who can access containers
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line = inStream.readLine();
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String [] containerNames = line.split(";");
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containerNames = this.convertNameListToUUIDList(containerNames);
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//sixth line is list of players who can use buttons and switches
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line = inStream.readLine();
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String [] accessorNames = line.split(";");
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accessorNames = this.convertNameListToUUIDList(accessorNames);
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//seventh line is list of players who can grant permissions
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line = inStream.readLine();
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if(line == null) line = "";
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String [] managerNames = line.split(";");
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managerNames = this.convertNameListToUUIDList(managerNames);
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//skip any remaining extra lines, until the "===" string, indicating the end of this claim or subdivision
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line = inStream.readLine();
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while(line != null && !line.contains("==="))
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line = inStream.readLine();
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//build a claim instance from those data
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//if this is the first claim loaded from this file, it's the top level claim
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if(topLevelClaim == null)
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{
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//instantiate
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topLevelClaim = new Claim(lesserBoundaryCorner, greaterBoundaryCorner, ownerID, builderNames, containerNames, accessorNames, managerNames, claimID);
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topLevelClaim.modifiedDate = new Date(files[i].lastModified());
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this.addClaim(topLevelClaim, false);
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}
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//otherwise there's already a top level claim, so this must be a subdivision of that top level claim
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else
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{
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Claim subdivision = new Claim(lesserBoundaryCorner, greaterBoundaryCorner, null, builderNames, containerNames, accessorNames, managerNames, null);
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subdivision.modifiedDate = new Date(files[i].lastModified());
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subdivision.parent = topLevelClaim;
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topLevelClaim.children.add(subdivision);
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subdivision.inDataStore = true;
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}
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//move up to the first line in the next subdivision
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line = inStream.readLine();
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}
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inStream.close();
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}
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//if there's any problem with the file's content, log an error message and skip it
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catch(Exception e)
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{
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if(e.getMessage().contains("World not found"))
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{
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inStream.close();
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files[i].delete();
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}
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else
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{
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StringWriter errors = new StringWriter();
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e.printStackTrace(new PrintWriter(errors));
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GriefPrevention.AddLogEntry(files[i].getName() + " " + errors.toString(), CustomLogEntryTypes.Exception);
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}
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}
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try
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{
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if(inStream != null) inStream.close();
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}
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catch(IOException exception) {}
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}
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}
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super.initialize();
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}
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@Override
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synchronized void writeClaimToStorage(Claim claim)
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{
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String claimID = String.valueOf(claim.id);
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BufferedWriter outStream = null;
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try
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{
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//open the claim's file
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File claimFile = new File(claimDataFolderPath + File.separator + claimID);
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claimFile.createNewFile();
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outStream = new BufferedWriter(new FileWriter(claimFile));
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//write top level claim data to the file
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this.writeClaimData(claim, outStream);
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//for each subdivision
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for(int i = 0; i < claim.children.size(); i++)
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{
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//write the subdivision's data to the file
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this.writeClaimData(claim.children.get(i), outStream);
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}
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}
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//if any problem, log it
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catch(Exception e)
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{
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StringWriter errors = new StringWriter();
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e.printStackTrace(new PrintWriter(errors));
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GriefPrevention.AddLogEntry(claimID + " " + errors.toString(), CustomLogEntryTypes.Exception);
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}
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//close the file
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try
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{
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if(outStream != null) outStream.close();
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}
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catch(IOException exception) {}
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}
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//actually writes claim data to an output stream
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synchronized private void writeClaimData(Claim claim, BufferedWriter outStream) throws IOException
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{
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//first line is lesser boundary corner location
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outStream.write(this.locationToString(claim.getLesserBoundaryCorner()));
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outStream.newLine();
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//second line is greater boundary corner location
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outStream.write(this.locationToString(claim.getGreaterBoundaryCorner()));
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outStream.newLine();
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//third line is owner name
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String lineToWrite = "";
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if(claim.ownerID != null) lineToWrite = claim.ownerID.toString();
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outStream.write(lineToWrite);
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outStream.newLine();
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ArrayList<String> builders = new ArrayList<String>();
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ArrayList<String> containers = new ArrayList<String>();
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ArrayList<String> accessors = new ArrayList<String>();
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ArrayList<String> managers = new ArrayList<String>();
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claim.getPermissions(builders, containers, accessors, managers);
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//fourth line is list of players with build permission
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for(int i = 0; i < builders.size(); i++)
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{
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outStream.write(builders.get(i) + ";");
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}
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outStream.newLine();
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//fifth line is list of players with container permission
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for(int i = 0; i < containers.size(); i++)
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{
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outStream.write(containers.get(i) + ";");
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}
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outStream.newLine();
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//sixth line is list of players with access permission
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for(int i = 0; i < accessors.size(); i++)
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{
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outStream.write(accessors.get(i) + ";");
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}
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outStream.newLine();
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//seventh line is list of players who may grant permissions for others
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for(int i = 0; i < managers.size(); i++)
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{
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outStream.write(managers.get(i) + ";");
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}
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outStream.newLine();
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//cap each claim with "=========="
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outStream.write("==========");
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outStream.newLine();
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}
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//deletes a top level claim from the file system
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@Override
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synchronized void deleteClaimFromSecondaryStorage(Claim claim)
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{
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String claimID = String.valueOf(claim.id);
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//remove from disk
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File claimFile = new File(claimDataFolderPath + File.separator + claimID);
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if(claimFile.exists() && !claimFile.delete())
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{
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GriefPrevention.AddLogEntry("Error: Unable to delete claim file \"" + claimFile.getAbsolutePath() + "\".");
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}
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}
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@Override
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synchronized PlayerData getPlayerDataFromStorage(UUID playerID)
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{
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File playerFile = new File(playerDataFolderPath + File.separator + playerID.toString());
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PlayerData playerData = new PlayerData();
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playerData.playerID = playerID;
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//if it exists as a file, read the file
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if(playerFile.exists())
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{
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boolean needRetry = false;
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int retriesRemaining = 5;
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Exception latestException = null;
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do
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{
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try
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{
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needRetry = false;
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//read the file content and immediately close it
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List<String> lines = Files.readLines(playerFile, Charset.forName("UTF-8"));
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Iterator<String> iterator = lines.iterator();
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//first line is last login timestamp
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String lastLoginTimestampString = iterator.next();
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//convert that to a date and store it
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DateFormat dateFormat = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss");
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try
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{
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playerData.setLastLogin(dateFormat.parse(lastLoginTimestampString));
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}
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catch(ParseException parseException)
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{
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GriefPrevention.AddLogEntry("Unable to load last login for \"" + playerFile.getName() + "\".");
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playerData.setLastLogin(null);
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}
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//second line is accrued claim blocks
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String accruedBlocksString = iterator.next();
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//convert that to a number and store it
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playerData.setAccruedClaimBlocks(Integer.parseInt(accruedBlocksString));
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//third line is any bonus claim blocks granted by administrators
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String bonusBlocksString = iterator.next();
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//convert that to a number and store it
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playerData.setBonusClaimBlocks(Integer.parseInt(bonusBlocksString));
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//fourth line is a double-semicolon-delimited list of claims, which is currently ignored
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//String claimsString = inStream.readLine();
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//iterator.next();
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}
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//if there's any problem with the file's content, retry up to 5 times with 5 milliseconds between
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catch(Exception e)
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{
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latestException = e;
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needRetry = true;
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retriesRemaining--;
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}
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try
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{
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if(needRetry) Thread.sleep(5);
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}
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catch(InterruptedException exception) {}
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}while(needRetry && retriesRemaining >= 0);
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//if last attempt failed, log information about the problem
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if(needRetry)
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{
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StringWriter errors = new StringWriter();
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latestException.printStackTrace(new PrintWriter(errors));
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GriefPrevention.AddLogEntry(playerID + " " + errors.toString(), CustomLogEntryTypes.Exception);
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}
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}
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return playerData;
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}
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//saves changes to player data. MUST be called after you're done making changes, otherwise a reload will lose them
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@Override
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public void overrideSavePlayerData(UUID playerID, PlayerData playerData)
|
|
{
|
|
//never save data for the "administrative" account. null for claim owner ID indicates administrative account
|
|
if(playerID == null) return;
|
|
|
|
StringBuilder fileContent = new StringBuilder();
|
|
try
|
|
{
|
|
//first line is last login timestamp
|
|
if(playerData.getLastLogin() == null) playerData.setLastLogin(new Date());
|
|
DateFormat dateFormat = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss");
|
|
fileContent.append(dateFormat.format(playerData.getLastLogin()));
|
|
fileContent.append("\n");
|
|
|
|
//second line is accrued claim blocks
|
|
fileContent.append(String.valueOf(playerData.getAccruedClaimBlocks()));
|
|
fileContent.append("\n");
|
|
|
|
//third line is bonus claim blocks
|
|
fileContent.append(String.valueOf(playerData.getBonusClaimBlocks()));
|
|
fileContent.append("\n");
|
|
|
|
//fourth line is a double-semicolon-delimited list of claims
|
|
if(playerData.getClaims().size() > 0)
|
|
{
|
|
fileContent.append(this.locationToString(playerData.getClaims().get(0).getLesserBoundaryCorner()));
|
|
for(int i = 1; i < playerData.getClaims().size(); i++)
|
|
{
|
|
fileContent.append(";;" + this.locationToString(playerData.getClaims().get(i).getLesserBoundaryCorner()));
|
|
}
|
|
}
|
|
fileContent.append("\n");
|
|
|
|
//write data to file
|
|
File playerDataFile = new File(playerDataFolderPath + File.separator + playerID.toString());
|
|
Files.write(fileContent.toString().getBytes("UTF-8"), playerDataFile);
|
|
}
|
|
|
|
//if any problem, log it
|
|
catch(Exception e)
|
|
{
|
|
GriefPrevention.AddLogEntry("GriefPrevention: Unexpected exception saving data for player \"" + playerID.toString() + "\": " + e.getMessage());
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
synchronized void incrementNextClaimID()
|
|
{
|
|
//increment in memory
|
|
this.nextClaimID++;
|
|
|
|
BufferedWriter outStream = null;
|
|
|
|
try
|
|
{
|
|
//open the file and write the new value
|
|
File nextClaimIdFile = new File(nextClaimIdFilePath);
|
|
nextClaimIdFile.createNewFile();
|
|
outStream = new BufferedWriter(new FileWriter(nextClaimIdFile));
|
|
|
|
outStream.write(String.valueOf(this.nextClaimID));
|
|
}
|
|
|
|
//if any problem, log it
|
|
catch(Exception e)
|
|
{
|
|
GriefPrevention.AddLogEntry("Unexpected exception saving next claim ID: " + e.getMessage());
|
|
e.printStackTrace();
|
|
}
|
|
|
|
//close the file
|
|
try
|
|
{
|
|
if(outStream != null) outStream.close();
|
|
}
|
|
catch(IOException exception) {}
|
|
}
|
|
|
|
//grants a group (players with a specific permission) bonus claim blocks as long as they're still members of the group
|
|
@Override
|
|
synchronized void saveGroupBonusBlocks(String groupName, int currentValue)
|
|
{
|
|
//write changes to file to ensure they don't get lost
|
|
BufferedWriter outStream = null;
|
|
try
|
|
{
|
|
//open the group's file
|
|
File groupDataFile = new File(playerDataFolderPath + File.separator + "$" + groupName);
|
|
groupDataFile.createNewFile();
|
|
outStream = new BufferedWriter(new FileWriter(groupDataFile));
|
|
|
|
//first line is number of bonus blocks
|
|
outStream.write(String.valueOf(currentValue));
|
|
outStream.newLine();
|
|
}
|
|
|
|
//if any problem, log it
|
|
catch(Exception e)
|
|
{
|
|
GriefPrevention.AddLogEntry("Unexpected exception saving data for group \"" + groupName + "\": " + e.getMessage());
|
|
}
|
|
|
|
try
|
|
{
|
|
//close the file
|
|
if(outStream != null)
|
|
{
|
|
outStream.close();
|
|
}
|
|
}
|
|
catch(IOException exception){}
|
|
}
|
|
|
|
synchronized void migrateData(DatabaseDataStore databaseStore)
|
|
{
|
|
//migrate claims
|
|
for(int i = 0; i < this.claims.size(); i++)
|
|
{
|
|
Claim claim = this.claims.get(i);
|
|
databaseStore.addClaim(claim, true);
|
|
}
|
|
|
|
//migrate groups
|
|
Iterator<String> groupNamesEnumerator = this.permissionToBonusBlocksMap.keySet().iterator();
|
|
while(groupNamesEnumerator.hasNext())
|
|
{
|
|
String groupName = groupNamesEnumerator.next();
|
|
databaseStore.saveGroupBonusBlocks(groupName, this.permissionToBonusBlocksMap.get(groupName));
|
|
}
|
|
|
|
//migrate players
|
|
File playerDataFolder = new File(playerDataFolderPath);
|
|
File [] files = playerDataFolder.listFiles();
|
|
for(int i = 0; i < files.length; i++)
|
|
{
|
|
File file = files[i];
|
|
if(!file.isFile()) continue; //avoids folders
|
|
|
|
//all group data files start with a dollar sign. ignoring those, already handled above
|
|
if(file.getName().startsWith("$")) continue;
|
|
|
|
//ignore special files
|
|
if(file.getName().startsWith("_")) continue;
|
|
if(file.getName().endsWith(".ignore")) continue;
|
|
|
|
UUID playerID = UUID.fromString(file.getName());
|
|
databaseStore.savePlayerData(playerID, this.getPlayerData(playerID));
|
|
this.clearCachedPlayerData(playerID);
|
|
}
|
|
|
|
//migrate next claim ID
|
|
if(this.nextClaimID > databaseStore.nextClaimID)
|
|
{
|
|
databaseStore.setNextClaimID(this.nextClaimID);
|
|
}
|
|
|
|
//rename player and claim data folders so the migration won't run again
|
|
int i = 0;
|
|
File claimsBackupFolder;
|
|
File playersBackupFolder;
|
|
do
|
|
{
|
|
String claimsFolderBackupPath = claimDataFolderPath;
|
|
if(i > 0) claimsFolderBackupPath += String.valueOf(i);
|
|
claimsBackupFolder = new File(claimsFolderBackupPath);
|
|
|
|
String playersFolderBackupPath = playerDataFolderPath;
|
|
if(i > 0) playersFolderBackupPath += String.valueOf(i);
|
|
playersBackupFolder = new File(playersFolderBackupPath);
|
|
i++;
|
|
} while(claimsBackupFolder.exists() || playersBackupFolder.exists());
|
|
|
|
File claimsFolder = new File(claimDataFolderPath);
|
|
File playersFolder = new File(playerDataFolderPath);
|
|
|
|
claimsFolder.renameTo(claimsBackupFolder);
|
|
playersFolder.renameTo(playersBackupFolder);
|
|
|
|
GriefPrevention.AddLogEntry("Backed your file system data up to " + claimsBackupFolder.getName() + " and " + playersBackupFolder.getName() + ".");
|
|
GriefPrevention.AddLogEntry("If your migration encountered any problems, you can restore those data with a quick copy/paste.");
|
|
GriefPrevention.AddLogEntry("When you're satisfied that all your data have been safely migrated, consider deleting those folders.");
|
|
}
|
|
|
|
@Override
|
|
synchronized void close() { }
|
|
|
|
@Override
|
|
int getSchemaVersionFromStorage()
|
|
{
|
|
File schemaVersionFile = new File(schemaVersionFilePath);
|
|
if(schemaVersionFile.exists())
|
|
{
|
|
BufferedReader inStream = null;
|
|
int schemaVersion = 0;
|
|
try
|
|
{
|
|
inStream = new BufferedReader(new FileReader(schemaVersionFile.getAbsolutePath()));
|
|
|
|
//read the version number
|
|
String line = inStream.readLine();
|
|
|
|
//try to parse into an int value
|
|
schemaVersion = Integer.parseInt(line);
|
|
}
|
|
catch(Exception e){ }
|
|
|
|
try
|
|
{
|
|
if(inStream != null) inStream.close();
|
|
}
|
|
catch(IOException exception) {}
|
|
|
|
return schemaVersion;
|
|
}
|
|
else
|
|
{
|
|
this.updateSchemaVersionInStorage(0);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
void updateSchemaVersionInStorage(int versionToSet)
|
|
{
|
|
BufferedWriter outStream = null;
|
|
|
|
try
|
|
{
|
|
//open the file and write the new value
|
|
File schemaVersionFile = new File(schemaVersionFilePath);
|
|
schemaVersionFile.createNewFile();
|
|
outStream = new BufferedWriter(new FileWriter(schemaVersionFile));
|
|
|
|
outStream.write(String.valueOf(versionToSet));
|
|
}
|
|
|
|
//if any problem, log it
|
|
catch(Exception e)
|
|
{
|
|
GriefPrevention.AddLogEntry("Unexpected exception saving schema version: " + e.getMessage());
|
|
}
|
|
|
|
//close the file
|
|
try
|
|
{
|
|
if(outStream != null) outStream.close();
|
|
}
|
|
catch(IOException exception) {}
|
|
|
|
}
|
|
}
|