111 lines
4.0 KiB
Java
111 lines
4.0 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2024 ViaVersion and contributors
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*
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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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*
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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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*
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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 com.viaversion.viaversion.connection;
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import com.viaversion.viaversion.api.Via;
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import com.viaversion.viaversion.api.connection.ConnectionManager;
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import com.viaversion.viaversion.api.connection.UserConnection;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelFutureListener;
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import java.util.Collections;
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import java.util.Map;
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import java.util.Objects;
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import java.util.Set;
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import java.util.UUID;
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import java.util.concurrent.ConcurrentHashMap;
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import org.checkerframework.checker.nullness.qual.Nullable;
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public class ConnectionManagerImpl implements ConnectionManager {
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protected final Map<UUID, UserConnection> clients = new ConcurrentHashMap<>();
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protected final Set<UserConnection> connections = Collections.newSetFromMap(new ConcurrentHashMap<>());
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@Override
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public void onLoginSuccess(UserConnection connection) {
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Objects.requireNonNull(connection, "connection is null!");
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Channel channel = connection.getChannel();
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// This user has already disconnected...
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if (channel != null && !channel.isOpen()) return;
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boolean newlyAdded = connections.add(connection);
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if (isFrontEnd(connection)) {
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UUID id = connection.getProtocolInfo().getUuid();
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UserConnection previous = clients.put(id, connection);
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if (previous != null && previous != connection) {
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Via.getPlatform().getLogger().warning("Duplicate UUID on frontend connection! (" + id + ")");
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}
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}
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if (channel != null) {
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// We managed to add a user that had already disconnected!
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// Let's clean up the mess here and now
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if (!channel.isOpen()) {
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onDisconnect(connection);
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} else if (newlyAdded) { // Setup to clean-up on disconnect
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channel.closeFuture().addListener((ChannelFutureListener) future -> onDisconnect(connection));
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}
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}
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}
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@Override
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public void onDisconnect(UserConnection connection) {
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Objects.requireNonNull(connection, "connection is null!");
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connections.remove(connection);
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if (isFrontEnd(connection)) {
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UUID id = connection.getProtocolInfo().getUuid();
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clients.remove(id);
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}
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connection.clearStoredObjects();
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}
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@Override
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public Map<UUID, UserConnection> getConnectedClients() {
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return Collections.unmodifiableMap(clients);
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}
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@Override
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public @Nullable UserConnection getConnectedClient(UUID clientIdentifier) {
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return clients.get(clientIdentifier);
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}
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@Override
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public @Nullable UUID getConnectedClientId(UserConnection connection) {
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if (connection.getProtocolInfo() == null) return null;
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UUID uuid = connection.getProtocolInfo().getUuid();
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UserConnection client = clients.get(uuid);
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if (connection.equals(client)) {
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// This is frontend
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return uuid;
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}
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return null;
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}
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@Override
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public Set<UserConnection> getConnections() {
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return Collections.unmodifiableSet(connections);
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}
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@Override
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public boolean isClientConnected(UUID playerId) {
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return clients.containsKey(playerId);
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}
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}
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