151 lines
6.1 KiB
Java
151 lines
6.1 KiB
Java
package com.Acrobot.ChestShop.Database;
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import com.Acrobot.ChestShop.ChestShop;
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import com.j256.ormlite.dao.CloseableIterator;
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import com.j256.ormlite.dao.Dao;
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import com.j256.ormlite.dao.GenericRawResults;
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import java.io.IOException;
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import java.sql.SQLException;
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import java.util.Date;
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import java.util.UUID;
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import java.util.logging.Level;
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/**
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* File handling the database migrations
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*
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* @author Andrzej Pomirski
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*/
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public class Migrations {
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public static final int CURRENT_DATABASE_VERSION = 4;
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/**
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* Migrates a database from the given version
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*
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* @param currentVersion Current version of the database
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* @return Current database version
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*/
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public static int migrate(int currentVersion) {
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if (currentVersion != CURRENT_DATABASE_VERSION) {
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ChestShop.getBukkitLogger().info("Updating database...");
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}
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switch (currentVersion) {
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case 1:
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if (migrateTo2()) {
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currentVersion++;
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} else {
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return -1;
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}
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case 2:
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if (migrateTo3()) {
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currentVersion++;
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} else {
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return -1;
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}
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case 3:
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if (migrateTo4()) {
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currentVersion++;
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} else {
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return -1;
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}
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case 4:
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default:
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break;
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//do nothing
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}
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return currentVersion;
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}
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private static boolean migrateTo2() {
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try {
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Dao<Account, String> accounts = DaoCreator.getDao(Account.class);
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accounts.executeRaw("ALTER TABLE `accounts` ADD COLUMN lastSeenName VARCHAR");
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return true;
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} catch (SQLException e) {
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ChestShop.getBukkitLogger().log(Level.SEVERE, "Error while migrating database to v2", e);
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return false;
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}
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}
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private static boolean migrateTo3() {
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try {
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Dao<Account, String> accountsOld = DaoCreator.getDao(Account.class);
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accountsOld.executeRawNoArgs("ALTER TABLE `accounts` RENAME TO `accounts-old`");
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Dao<Account, String> accounts = DaoCreator.getDaoAndCreateTable(Account.class);
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long start = System.currentTimeMillis();
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try {
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accounts.executeRawNoArgs("INSERT INTO `accounts` (name, shortName, uuid) SELECT name, shortName, uuid FROM `accounts-old`");
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} catch (SQLException e) {
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ChestShop.getBukkitLogger().log(Level.WARNING, "Fast accounts migration failed!\n" + e + "\nCause: " + e.getCause());
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ChestShop.getBukkitLogger().log(Level.INFO, "Starting slow migration...");
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accounts.executeRawNoArgs("DELETE FROM `accounts`");
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GenericRawResults<String[]> results = accounts.queryRaw("SELECT name, shortName, uuid FROM `accounts-old`");
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Date zero = new Date(0);
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int success = 0;
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int error = 0;
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CloseableIterator<String[]> resultIterator = results.closeableIterator();
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long lastInfo = System.currentTimeMillis();
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while (resultIterator.hasNext()) {
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String[] strings = resultIterator.next();
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Account account = new Account(strings[0], UUID.fromString(strings[2]));
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account.setShortName(strings[1]);
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account.setLastSeen(zero);
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try {
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accounts.create(account);
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success++;
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} catch (SQLException x) {
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error++;
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ChestShop.getBukkitLogger().log(Level.SEVERE, "Could not migrate account " + account.getName() + "/" + account.getShortName() + "/" + account.getUuid() + " to new database format:\n" + x + "\nCause: " + x.getCause());
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ChestShop.getBukkitLogger().log(Level.INFO, "If the cause is a constraint violation then this is nothing to worry about!");
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}
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if (lastInfo + 60 * 1000 < System.currentTimeMillis()) {
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ChestShop.getBukkitLogger().log(Level.INFO, "Slow migration in progress... " + (System.currentTimeMillis() - start) / 1000.0 + "s elapsed - " + success + " migrated - " + error + " errors");
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lastInfo = System.currentTimeMillis();
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}
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}
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try {
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results.close();
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} catch (Exception e1) {
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ChestShop.getBukkitLogger().log(Level.WARNING, "Error while closing results! " + e.getMessage());
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}
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ChestShop.getBukkitLogger().log(Level.INFO, success + " accounts successfully migrated. " + error + " accounts failed to migrate!");
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}
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ChestShop.getBukkitLogger().log(Level.INFO, "Migration of accounts table finished in " + (System.currentTimeMillis() - start) / 1000.0 + "s!");
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return true;
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} catch (SQLException e) {
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ChestShop.getBukkitLogger().log(Level.SEVERE, "Error while migrating database to v3", e);
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return false;
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}
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}
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private static boolean migrateTo4() {
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try {
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Dao<Item, Integer> itemsOld = DaoCreator.getDao(Item.class);
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itemsOld.executeRawNoArgs("ALTER TABLE `items` RENAME TO `items-old`");
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Dao<Item, Integer> items = DaoCreator.getDaoAndCreateTable(Item.class);
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long start = System.currentTimeMillis();
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try {
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items.executeRawNoArgs("INSERT INTO `items` (id, code) SELECT id, code uuid FROM `items-old`");
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} catch (SQLException e) {
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e.printStackTrace();
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}
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ChestShop.getBukkitLogger().log(Level.INFO, "Migration of items table finished in " + (System.currentTimeMillis() - start) / 1000.0 + "s!");
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return true;
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} catch (SQLException e) {
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ChestShop.getBukkitLogger().log(Level.SEVERE, "Error while migrating database to v4", e);
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return false;
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}
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}
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}
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