128 lines
5.0 KiB
Java
128 lines
5.0 KiB
Java
/*
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* This file is part of Player Analytics (Plan).
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*
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* Plan is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License v3 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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*
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* Plan 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Plan. If not, see <https://www.gnu.org/licenses/>.
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*/
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package com.djrapitops.plan.gathering;
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import com.djrapitops.plan.exceptions.database.DBInitException;
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import com.djrapitops.plan.gathering.afk.AFKTracker;
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import com.djrapitops.plan.gathering.cache.SessionCache;
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import com.djrapitops.plan.gathering.domain.ActiveSession;
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import com.djrapitops.plan.gathering.domain.FinishedSession;
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import com.djrapitops.plan.settings.locale.Locale;
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import com.djrapitops.plan.settings.locale.lang.PluginLang;
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import com.djrapitops.plan.storage.database.DBSystem;
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import com.djrapitops.plan.storage.database.Database;
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import com.djrapitops.plan.storage.database.transactions.events.ServerShutdownTransaction;
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import com.djrapitops.plan.utilities.logging.ErrorContext;
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import com.djrapitops.plan.utilities.logging.ErrorLogger;
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import net.playeranalytics.plugin.server.PluginLogger;
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import java.util.Collection;
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import java.util.Optional;
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import java.util.concurrent.Future;
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import java.util.stream.Collectors;
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/**
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* Class in charge of performing save operations when the server shuts down.
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*
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* @author AuroraLS3
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*/
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public abstract class ServerShutdownSave {
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protected final PluginLogger logger;
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private final DBSystem dbSystem;
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private final Locale locale;
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private final ErrorLogger errorLogger;
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private boolean shuttingDown = false;
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protected ServerShutdownSave(
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Locale locale,
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DBSystem dbSystem,
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PluginLogger logger,
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ErrorLogger errorLogger
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) {
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this.locale = locale;
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this.dbSystem = dbSystem;
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this.logger = logger;
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this.errorLogger = errorLogger;
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}
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protected abstract boolean checkServerShuttingDownStatus();
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public abstract Optional<AFKTracker> getAfkTracker();
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public void serverIsKnownToBeShuttingDown() {
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shuttingDown = true;
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}
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public Optional<Future<?>> performSave() {
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if (!checkServerShuttingDownStatus() && !shuttingDown) {
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return Optional.empty();
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}
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Collection<ActiveSession> activeSessions = SessionCache.getActiveSessions();
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if (activeSessions.isEmpty()) {
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return Optional.empty();
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}
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// This check ensures that logging is not attempted on JVM shutdown.
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// Underlying Logger might not be available leading to an exception.
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if (!shuttingDown) {
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logger.info(locale.getString(PluginLang.DISABLED_UNSAVED_SESSIONS));
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}
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return attemptSave(activeSessions);
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}
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private Optional<Future<?>> attemptSave(Collection<ActiveSession> activeSessions) {
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try {
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return saveActiveSessions(finishSessions(activeSessions, System.currentTimeMillis()));
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} catch (DBInitException e) {
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errorLogger.error(e, ErrorContext.builder()
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.whatToDo("Find the sessions in the error file and save them manually or ignore. Report & delete the error file after.")
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.related("Shutdown save failed to init database.")
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.related(activeSessions)
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.build());
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return Optional.empty();
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} catch (IllegalStateException ignored) {
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/* Database is not initialized */
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return Optional.empty();
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}
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}
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private Optional<Future<?>> saveActiveSessions(Collection<FinishedSession> finishedSessions) {
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Database database = dbSystem.getDatabase();
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if (database.getState() == Database.State.CLOSED) {
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// Don't attempt to save if database is closed, session storage will be handled by
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// ShutdownDataPreservation instead.
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// Previously database reboot was attempted, but this could lead to server hang.
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return Optional.empty();
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}
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return Optional.of(saveSessions(finishedSessions, database));
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}
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Collection<FinishedSession> finishSessions(Collection<ActiveSession> activeSessions, long now) {
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return activeSessions.stream().map(session -> {
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getAfkTracker().ifPresent(afkTracker -> afkTracker.performedAction(session.getPlayerUUID(), now));
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return session.toFinishedSession(now);
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}).collect(Collectors.toList());
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}
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private Future<?> saveSessions(Collection<FinishedSession> finishedSessions, Database database) {
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return database.executeTransaction(new ServerShutdownTransaction(finishedSessions));
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}
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} |