458 lines
21 KiB
Java
458 lines
21 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2021 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.protocol;
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import com.google.common.base.Preconditions;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Range;
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import com.google.common.util.concurrent.ThreadFactoryBuilder;
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import com.viaversion.viaversion.api.Via;
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import com.viaversion.viaversion.api.connection.UserConnection;
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import com.viaversion.viaversion.api.data.MappingDataLoader;
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import com.viaversion.viaversion.api.protocol.ProtocolManager;
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import com.viaversion.viaversion.api.protocol.ProtocolPathEntry;
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import com.viaversion.viaversion.api.protocol.ProtocolPathKey;
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import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
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import com.viaversion.viaversion.api.protocol.base.Protocol;
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import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
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import com.viaversion.viaversion.api.protocol.version.ServerProtocolVersion;
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import com.viaversion.viaversion.protocol.packet.PacketWrapperImpl;
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import com.viaversion.viaversion.protocols.base.BaseProtocol;
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import com.viaversion.viaversion.protocols.base.BaseProtocol1_16;
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import com.viaversion.viaversion.protocols.base.BaseProtocol1_7;
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import com.viaversion.viaversion.protocols.protocol1_10to1_9_3.Protocol1_10To1_9_3_4;
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import com.viaversion.viaversion.protocols.protocol1_11_1to1_11.Protocol1_11_1To1_11;
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import com.viaversion.viaversion.protocols.protocol1_11to1_10.Protocol1_11To1_10;
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import com.viaversion.viaversion.protocols.protocol1_12_1to1_12.Protocol1_12_1To1_12;
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import com.viaversion.viaversion.protocols.protocol1_12_2to1_12_1.Protocol1_12_2To1_12_1;
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import com.viaversion.viaversion.protocols.protocol1_12to1_11_1.Protocol1_12To1_11_1;
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import com.viaversion.viaversion.protocols.protocol1_13_1to1_13.Protocol1_13_1To1_13;
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import com.viaversion.viaversion.protocols.protocol1_13_2to1_13_1.Protocol1_13_2To1_13_1;
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import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.Protocol1_13To1_12_2;
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import com.viaversion.viaversion.protocols.protocol1_14_1to1_14.Protocol1_14_1To1_14;
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import com.viaversion.viaversion.protocols.protocol1_14_2to1_14_1.Protocol1_14_2To1_14_1;
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import com.viaversion.viaversion.protocols.protocol1_14_3to1_14_2.Protocol1_14_3To1_14_2;
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import com.viaversion.viaversion.protocols.protocol1_14_4to1_14_3.Protocol1_14_4To1_14_3;
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import com.viaversion.viaversion.protocols.protocol1_14to1_13_2.Protocol1_14To1_13_2;
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import com.viaversion.viaversion.protocols.protocol1_15_1to1_15.Protocol1_15_1To1_15;
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import com.viaversion.viaversion.protocols.protocol1_15_2to1_15_1.Protocol1_15_2To1_15_1;
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import com.viaversion.viaversion.protocols.protocol1_15to1_14_4.Protocol1_15To1_14_4;
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import com.viaversion.viaversion.protocols.protocol1_16_1to1_16.Protocol1_16_1To1_16;
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import com.viaversion.viaversion.protocols.protocol1_16_2to1_16_1.Protocol1_16_2To1_16_1;
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import com.viaversion.viaversion.protocols.protocol1_16_3to1_16_2.Protocol1_16_3To1_16_2;
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import com.viaversion.viaversion.protocols.protocol1_16_4to1_16_3.Protocol1_16_4To1_16_3;
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import com.viaversion.viaversion.protocols.protocol1_16to1_15_2.Protocol1_16To1_15_2;
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import com.viaversion.viaversion.protocols.protocol1_17to1_16_4.Protocol1_17To1_16_4;
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import com.viaversion.viaversion.protocols.protocol1_9_1_2to1_9_3_4.Protocol1_9_1_2To1_9_3_4;
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import com.viaversion.viaversion.protocols.protocol1_9_1to1_9.Protocol1_9_1To1_9;
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import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.Protocol1_9_3To1_9_1_2;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.Protocol1_9To1_8;
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import com.viaversion.viaversion.protocols.protocol1_9to1_9_1.Protocol1_9To1_9_1;
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import com.viaversion.viaversion.util.Pair;
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import io.netty.buffer.ByteBuf;
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import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
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import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
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import org.checkerframework.checker.nullness.qual.Nullable;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.SortedSet;
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import java.util.TreeSet;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.SynchronousQueue;
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import java.util.concurrent.ThreadFactory;
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import java.util.concurrent.ThreadPoolExecutor;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.locks.ReadWriteLock;
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import java.util.concurrent.locks.ReentrantReadWriteLock;
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import java.util.function.Function;
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public class ProtocolManagerImpl implements ProtocolManager {
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private static final Protocol BASE_PROTOCOL = new BaseProtocol();
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// Input Version -> Output Version & Protocol (Allows fast lookup)
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private final Int2ObjectMap<Int2ObjectMap<Protocol>> registryMap = new Int2ObjectOpenHashMap<>(32);
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private final Map<Class<? extends Protocol>, Protocol> protocols = new HashMap<>();
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private final Map<ProtocolPathKey, List<ProtocolPathEntry>> pathCache = new ConcurrentHashMap<>();
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private final Set<Integer> supportedVersions = new HashSet<>();
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private final List<Pair<Range<Integer>, Protocol>> baseProtocols = Lists.newCopyOnWriteArrayList();
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private final List<Protocol> registerList = new ArrayList<>();
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private final ReadWriteLock mappingLoaderLock = new ReentrantReadWriteLock();
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private Map<Class<? extends Protocol>, CompletableFuture<Void>> mappingLoaderFutures = new HashMap<>();
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private ThreadPoolExecutor mappingLoaderExecutor;
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private boolean mappingsLoaded;
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private ServerProtocolVersion serverProtocolVersion = new ServerProtocolVersionSingleton(-1);
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private int maxProtocolPathSize = 50;
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public ProtocolManagerImpl() {
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ThreadFactory threadFactory = new ThreadFactoryBuilder().setNameFormat("Via-Mappingloader-%d").build();
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mappingLoaderExecutor = new ThreadPoolExecutor(5, 16, 45L, TimeUnit.SECONDS, new SynchronousQueue<>(), threadFactory);
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mappingLoaderExecutor.allowCoreThreadTimeOut(true);
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}
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public void registerProtocols() {
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// Base Protocol
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registerBaseProtocol(BASE_PROTOCOL, Range.lessThan(Integer.MIN_VALUE));
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registerBaseProtocol(new BaseProtocol1_7(), Range.lessThan(ProtocolVersion.v1_16.getVersion()));
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registerBaseProtocol(new BaseProtocol1_16(), Range.atLeast(ProtocolVersion.v1_16.getVersion()));
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registerProtocol(new Protocol1_9To1_8(), ProtocolVersion.v1_9, ProtocolVersion.v1_8);
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registerProtocol(new Protocol1_9_1To1_9(), Arrays.asList(ProtocolVersion.v1_9_1.getVersion(), ProtocolVersion.v1_9_2.getVersion()), ProtocolVersion.v1_9.getVersion());
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registerProtocol(new Protocol1_9_3To1_9_1_2(), ProtocolVersion.v1_9_3, ProtocolVersion.v1_9_2);
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registerProtocol(new Protocol1_9To1_9_1(), ProtocolVersion.v1_9, ProtocolVersion.v1_9_1);
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registerProtocol(new Protocol1_9_1_2To1_9_3_4(), Arrays.asList(ProtocolVersion.v1_9_1.getVersion(), ProtocolVersion.v1_9_2.getVersion()), ProtocolVersion.v1_9_3.getVersion());
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registerProtocol(new Protocol1_10To1_9_3_4(), ProtocolVersion.v1_10, ProtocolVersion.v1_9_3);
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registerProtocol(new Protocol1_11To1_10(), ProtocolVersion.v1_11, ProtocolVersion.v1_10);
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registerProtocol(new Protocol1_11_1To1_11(), ProtocolVersion.v1_11_1, ProtocolVersion.v1_11);
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registerProtocol(new Protocol1_12To1_11_1(), ProtocolVersion.v1_12, ProtocolVersion.v1_11_1);
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registerProtocol(new Protocol1_12_1To1_12(), ProtocolVersion.v1_12_1, ProtocolVersion.v1_12);
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registerProtocol(new Protocol1_12_2To1_12_1(), ProtocolVersion.v1_12_2, ProtocolVersion.v1_12_1);
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registerProtocol(new Protocol1_13To1_12_2(), ProtocolVersion.v1_13, ProtocolVersion.v1_12_2);
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registerProtocol(new Protocol1_13_1To1_13(), ProtocolVersion.v1_13_1, ProtocolVersion.v1_13);
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registerProtocol(new Protocol1_13_2To1_13_1(), ProtocolVersion.v1_13_2, ProtocolVersion.v1_13_1);
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registerProtocol(new Protocol1_14To1_13_2(), ProtocolVersion.v1_14, ProtocolVersion.v1_13_2);
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registerProtocol(new Protocol1_14_1To1_14(), ProtocolVersion.v1_14_1, ProtocolVersion.v1_14);
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registerProtocol(new Protocol1_14_2To1_14_1(), ProtocolVersion.v1_14_2, ProtocolVersion.v1_14_1);
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registerProtocol(new Protocol1_14_3To1_14_2(), ProtocolVersion.v1_14_3, ProtocolVersion.v1_14_2);
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registerProtocol(new Protocol1_14_4To1_14_3(), ProtocolVersion.v1_14_4, ProtocolVersion.v1_14_3);
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registerProtocol(new Protocol1_15To1_14_4(), ProtocolVersion.v1_15, ProtocolVersion.v1_14_4);
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registerProtocol(new Protocol1_15_1To1_15(), ProtocolVersion.v1_15_1, ProtocolVersion.v1_15);
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registerProtocol(new Protocol1_15_2To1_15_1(), ProtocolVersion.v1_15_2, ProtocolVersion.v1_15_1);
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registerProtocol(new Protocol1_16To1_15_2(), ProtocolVersion.v1_16, ProtocolVersion.v1_15_2);
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registerProtocol(new Protocol1_16_1To1_16(), ProtocolVersion.v1_16_1, ProtocolVersion.v1_16);
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registerProtocol(new Protocol1_16_2To1_16_1(), ProtocolVersion.v1_16_2, ProtocolVersion.v1_16_1);
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registerProtocol(new Protocol1_16_3To1_16_2(), ProtocolVersion.v1_16_3, ProtocolVersion.v1_16_2);
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registerProtocol(new Protocol1_16_4To1_16_3(), ProtocolVersion.v1_16_4, ProtocolVersion.v1_16_3);
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registerProtocol(new Protocol1_17To1_16_4(), ProtocolVersion.v1_17, ProtocolVersion.v1_16_4);
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}
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@Override
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public void registerProtocol(Protocol protocol, ProtocolVersion supported, ProtocolVersion output) {
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registerProtocol(protocol, Collections.singletonList(supported.getVersion()), output.getVersion());
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}
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@Override
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public void registerProtocol(Protocol protocol, List<Integer> supported, int output) {
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// Clear cache as this may make new routes.
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if (!pathCache.isEmpty()) {
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pathCache.clear();
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}
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protocols.put(protocol.getClass(), protocol);
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for (int version : supported) {
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Int2ObjectMap<Protocol> protocolMap = registryMap.computeIfAbsent(version, s -> new Int2ObjectOpenHashMap<>(2));
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protocolMap.put(output, protocol);
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}
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if (Via.getPlatform().isPluginEnabled()) {
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protocol.register(Via.getManager().getProviders());
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refreshVersions();
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} else {
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registerList.add(protocol);
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}
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if (protocol.hasMappingDataToLoad()) {
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if (mappingLoaderExecutor != null) {
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// Submit mapping data loading
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addMappingLoaderFuture(protocol.getClass(), protocol::loadMappingData);
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} else {
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// Late protocol adding - just do it on the current thread
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protocol.loadMappingData();
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}
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}
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}
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@Override
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public void registerBaseProtocol(Protocol baseProtocol, Range<Integer> supportedProtocols) {
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Preconditions.checkArgument(baseProtocol.isBaseProtocol(), "Protocol is not a base protocol");
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baseProtocols.add(new Pair<>(supportedProtocols, baseProtocol));
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if (Via.getPlatform().isPluginEnabled()) {
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baseProtocol.register(Via.getManager().getProviders());
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refreshVersions();
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} else {
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registerList.add(baseProtocol);
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}
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}
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public void refreshVersions() {
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supportedVersions.clear();
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supportedVersions.add(serverProtocolVersion.lowestSupportedVersion());
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for (ProtocolVersion versions : ProtocolVersion.getProtocols()) {
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List<ProtocolPathEntry> paths = getProtocolPath(versions.getVersion(), serverProtocolVersion.lowestSupportedVersion());
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if (paths == null) continue;
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supportedVersions.add(versions.getVersion());
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for (ProtocolPathEntry path : paths) {
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supportedVersions.add(path.getOutputProtocolVersion());
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}
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}
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}
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@Override
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public @Nullable List<ProtocolPathEntry> getProtocolPath(int clientVersion, int serverVersion) {
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ProtocolPathKey protocolKey = new ProtocolPathKeyImpl(clientVersion, serverVersion);
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// Check cache
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List<ProtocolPathEntry> protocolList = pathCache.get(protocolKey);
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if (protocolList != null) {
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return protocolList;
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}
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// Generate path
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List<ProtocolPathEntry> outputPath = getProtocolPath(new ArrayList<>(), clientVersion, serverVersion);
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// If it found a path, cache it.
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if (outputPath != null) {
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pathCache.put(protocolKey, outputPath);
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}
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return outputPath;
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}
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/**
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* Calculates a path to get from an input protocol to the server's protocol.
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*
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* @param current current items in the path
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* @param clientVersion current input version
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* @param serverVersion desired output version
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* @return path that has been generated, null if failed
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*/
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private @Nullable List<ProtocolPathEntry> getProtocolPath(List<ProtocolPathEntry> current, int clientVersion, int serverVersion) {
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if (clientVersion == serverVersion) return null; // We're already there
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if (current.size() > maxProtocolPathSize) return null; // Fail safe, protocol too complicated.
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// First check if there is any protocols for this
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Int2ObjectMap<Protocol> inputMap = registryMap.get(clientVersion);
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if (inputMap == null) {
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return null; // Not supported
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}
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// Next check there isn't an obvious path
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Protocol protocol = inputMap.get(serverVersion);
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if (protocol != null) {
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current.add(new ProtocolPathEntryImpl(serverVersion, protocol));
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return current; // Easy solution
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}
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// There might be a more advanced solution... So we'll see if any of the others can get us there
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List<ProtocolPathEntry> shortest = null;
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for (Int2ObjectMap.Entry<Protocol> entry : inputMap.int2ObjectEntrySet()) {
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// Ensure it wasn't caught by the other loop
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if (entry.getIntKey() == serverVersion) continue;
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ProtocolPathEntry pathEntry = new ProtocolPathEntryImpl(entry.getIntKey(), entry.getValue());
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// Ensure no recursion
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if (current.contains(pathEntry)) continue;
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// Create a copy
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List<ProtocolPathEntry> newCurrent = new ArrayList<>(current);
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newCurrent.add(pathEntry);
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// Calculate the rest of the protocol using the current path entry
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newCurrent = getProtocolPath(newCurrent, entry.getIntKey(), serverVersion);
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// If it's shorter then choose it
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if (newCurrent != null
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&& (shortest == null || shortest.size() > newCurrent.size())) {
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shortest = newCurrent;
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}
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}
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return shortest; // null if none found
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}
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@Override
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public @Nullable <T extends Protocol> T getProtocol(Class<T> protocolClass) {
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return (T) protocols.get(protocolClass);
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}
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@Override
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public Protocol getBaseProtocol(int serverVersion) {
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for (Pair<Range<Integer>, Protocol> rangeProtocol : Lists.reverse(baseProtocols)) {
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if (rangeProtocol.getKey().contains(serverVersion)) {
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return rangeProtocol.getValue();
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}
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}
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throw new IllegalStateException("No Base Protocol for " + serverVersion);
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}
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@Override
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public boolean isBaseProtocol(Protocol protocol) {
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return protocol.isBaseProtocol();
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}
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@Override
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public ServerProtocolVersion getServerProtocolVersion() {
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return serverProtocolVersion;
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}
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public void setServerProtocol(ServerProtocolVersion serverProtocolVersion) {
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this.serverProtocolVersion = serverProtocolVersion;
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}
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@Override
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public boolean isWorkingPipe() {
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for (Int2ObjectMap<Protocol> map : registryMap.values()) {
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for (int protocolVersion : serverProtocolVersion.supportedVersions()) {
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if (map.containsKey(protocolVersion)) {
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return true;
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}
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}
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}
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return false; // No destination for protocol
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}
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@Override
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public SortedSet<Integer> getSupportedVersions() {
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return Collections.unmodifiableSortedSet(new TreeSet<>(supportedVersions));
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}
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@Override
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public int getMaxProtocolPathSize() {
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return maxProtocolPathSize;
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}
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@Override
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public void setMaxProtocolPathSize(int maxProtocolPathSize) {
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this.maxProtocolPathSize = maxProtocolPathSize;
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}
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@Override
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public Protocol getBaseProtocol() {
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return BASE_PROTOCOL;
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}
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@Override
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public void completeMappingDataLoading(Class<? extends Protocol> protocolClass) throws Exception {
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if (mappingsLoaded) return;
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CompletableFuture<Void> future = getMappingLoaderFuture(protocolClass);
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if (future != null) {
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// Wait for completion
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future.get();
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}
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}
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@Override
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public boolean checkForMappingCompletion() {
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mappingLoaderLock.readLock().lock();
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try {
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if (mappingsLoaded) return false;
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for (CompletableFuture<Void> future : mappingLoaderFutures.values()) {
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// Return if any future hasn't completed yet
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if (!future.isDone()) {
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return false;
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}
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}
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shutdownLoaderExecutor();
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return true;
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} finally {
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mappingLoaderLock.readLock().unlock();
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}
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}
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@Override
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public void addMappingLoaderFuture(Class<? extends Protocol> protocolClass, Runnable runnable) {
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CompletableFuture<Void> future = CompletableFuture.runAsync(runnable, mappingLoaderExecutor).exceptionally(mappingLoaderThrowable(protocolClass));
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mappingLoaderLock.writeLock().lock();
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try {
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mappingLoaderFutures.put(protocolClass, future);
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} finally {
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mappingLoaderLock.writeLock().unlock();
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}
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}
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@Override
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public void addMappingLoaderFuture(Class<? extends Protocol> protocolClass, Class<? extends Protocol> dependsOn, Runnable runnable) {
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CompletableFuture<Void> future = getMappingLoaderFuture(dependsOn)
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.whenCompleteAsync((v, throwable) -> runnable.run(), mappingLoaderExecutor).exceptionally(mappingLoaderThrowable(protocolClass));
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mappingLoaderLock.writeLock().lock();
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try {
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mappingLoaderFutures.put(protocolClass, future);
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} finally {
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mappingLoaderLock.writeLock().unlock();
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}
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}
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@Override
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public @Nullable CompletableFuture<Void> getMappingLoaderFuture(Class<? extends Protocol> protocolClass) {
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mappingLoaderLock.readLock().lock();
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try {
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return mappingsLoaded ? null : mappingLoaderFutures.get(protocolClass);
|
|
} finally {
|
|
mappingLoaderLock.readLock().unlock();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public PacketWrapper createPacketWrapper(int packetId, ByteBuf buf, UserConnection connection) {
|
|
return new PacketWrapperImpl(packetId, buf, connection);
|
|
}
|
|
|
|
/**
|
|
* Called when the server is enabled, to register any non-registered listeners.
|
|
*/
|
|
public void onServerLoaded() {
|
|
for (Protocol protocol : registerList) {
|
|
protocol.register(Via.getManager().getProviders());
|
|
}
|
|
registerList.clear();
|
|
}
|
|
|
|
private void shutdownLoaderExecutor() {
|
|
Preconditions.checkArgument(!mappingsLoaded);
|
|
|
|
Via.getPlatform().getLogger().info("Finished mapping loading, shutting down loader executor!");
|
|
mappingsLoaded = true;
|
|
mappingLoaderExecutor.shutdown();
|
|
mappingLoaderExecutor = null;
|
|
mappingLoaderFutures.clear();
|
|
mappingLoaderFutures = null;
|
|
if (MappingDataLoader.isCacheJsonMappings()) {
|
|
MappingDataLoader.getMappingsCache().clear();
|
|
}
|
|
}
|
|
|
|
private Function<Throwable, Void> mappingLoaderThrowable(Class<? extends Protocol> protocolClass) {
|
|
return throwable -> {
|
|
Via.getPlatform().getLogger().severe("Error during mapping loading of " + protocolClass.getSimpleName());
|
|
throwable.printStackTrace();
|
|
return null;
|
|
};
|
|
}
|
|
}
|