99 lines
3.9 KiB
Java
99 lines
3.9 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.velocity.service;
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import com.velocitypowered.api.proxy.server.RegisteredServer;
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import com.viaversion.viaversion.VelocityPlugin;
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import com.viaversion.viaversion.api.Via;
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import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
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import com.viaversion.viaversion.platform.AbstractProtocolDetectorService;
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import com.viaversion.viaversion.velocity.platform.VelocityViaConfig;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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import java.util.logging.Level;
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public final class ProtocolDetectorService extends AbstractProtocolDetectorService {
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@Override
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public void probeAllServers() {
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final Collection<RegisteredServer> servers = VelocityPlugin.PROXY.getAllServers();
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final Set<String> serverNames = new HashSet<>(servers.size());
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for (final RegisteredServer server : servers) {
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probeServer(server);
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serverNames.add(server.getServerInfo().getName());
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}
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// Remove servers that aren't registered anymore
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lock.writeLock().lock();
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try {
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detectedProtocolIds.keySet().retainAll(serverNames);
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} finally {
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lock.writeLock().unlock();
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}
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}
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public void probeServer(final RegisteredServer server) {
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final String serverName = server.getServerInfo().getName();
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server.ping().thenAccept(serverPing -> {
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if (serverPing == null || serverPing.getVersion() == null) {
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return;
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}
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final int oldProtocolVersion = serverProtocolVersion(serverName);
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if (oldProtocolVersion != -1 && oldProtocolVersion == serverPing.getVersion().getProtocol()) {
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// Same value as previously
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return;
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}
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setProtocolVersion(serverName, serverPing.getVersion().getProtocol());
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final VelocityViaConfig config = (VelocityViaConfig) Via.getConfig();
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if (config.isVelocityPingSave()) {
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final Map<String, Integer> servers = configuredServers();
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final Integer protocol = servers.get(serverName);
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if (protocol != null && protocol == serverPing.getVersion().getProtocol()) {
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return;
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}
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// Ensure we're the only ones writing to the config
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synchronized (Via.getPlatform().getConfigurationProvider()) {
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servers.put(serverName, serverPing.getVersion().getProtocol());
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}
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config.save();
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}
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});
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}
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@Override
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protected Map<String, Integer> configuredServers() {
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return ((VelocityViaConfig) Via.getConfig()).getVelocityServerProtocols();
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}
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@Override
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protected int lowestSupportedProtocolVersion() {
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try {
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return ProtocolVersion.getProtocol(Via.getManager().getInjector().getServerProtocolVersion()).getVersion();
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} catch (final Exception e) {
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Via.getPlatform().getLogger().log(Level.WARNING, "Failed to get lowest supported protocol version", e);
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return ProtocolVersion.v1_8.getVersion();
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}
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}
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}
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