Config for protocol versions

Also make config concurrent

bukkit/src/main/java/us/myles/ViaVersion/bukkit/platform/BukkitConfigAPI.java

@@ -8,9 +8,10 @@ import us.myles.ViaVersion.util.Config;
 import java.io.File;
 import java.util.Arrays;
 import java.util.List;
+import java.util.Map;
 
 public class BukkitConfigAPI extends Config implements ViaVersionConfig {
-    private static List<String> UNSUPPORTED = Arrays.asList();
+    private static List<String> UNSUPPORTED = Arrays.asList("bungee-ping-interval", "bungee-ping-save", "bungee-servers");
 
     public BukkitConfigAPI() {
         super(new File(((ViaVersionPlugin) Via.getPlatform()).getDataFolder(), "config.yml"));
@@ -166,6 +167,11 @@ public class BukkitConfigAPI extends Config implements ViaVersionConfig {
         return getString("reload-disconnect-msg", "Server reload, please rejoin!");
     }
 
+    @Override
+    protected void handleConfig(Map<String, Object> config) {
+        // Nothing currently
+    }
+
     @Override
     public List<String> getUnsupportedOptions() {
         return UNSUPPORTED;

bungee/src/main/java/us/myles/ViaVersion/BungeePlugin.java

@@ -58,8 +58,6 @@ public class BungeePlugin extends Plugin implements ViaPlatform, Listener {
                 .loader(new BungeeViaLoader(this))
                 .commandHandler(commandHandler)
                 .build());
-
-        getProxy().getPluginManager().registerListener(this, this);
     }
 
     @Override
@@ -137,7 +135,7 @@ public class BungeePlugin extends Plugin implements ViaPlatform, Listener {
     }
 
     @Override
-    public ViaVersionConfig getConf() {
+    public BungeeConfigAPI getConf() {
         return config;
     }
 
@@ -160,7 +158,7 @@ public class BungeePlugin extends Plugin implements ViaPlatform, Listener {
             plugins.add(new PluginInfo(true, p.getDescription().getName(), p.getDescription().getVersion(), p.getDescription().getMain(), Arrays.asList(p.getDescription().getAuthor())));
 
         platformSpecific.add("plugins", GsonUtil.getGson().toJsonTree(plugins));
-        platformSpecific.add("servers", GsonUtil.getGson().toJsonTree(ProtocolDetectorService.getProtocolIds()));
+        platformSpecific.add("servers", GsonUtil.getGson().toJsonTree(ProtocolDetectorService.getDetectedIds()));
         return platformSpecific;
     }
 

bungee/src/main/java/us/myles/ViaVersion/bungee/handlers/BungeeEncodeHandler.java

@@ -102,12 +102,6 @@ public class BungeeEncodeHandler extends MessageToMessageEncoder<ByteBuf> {
 
                     storage.setCurrentServer(serverName);
 
-                    // TODO HANDLE
-                    if (!ProtocolDetectorService.hasProtocolId(serverName)) {
-                        Via.getPlatform().getLogger().severe("Could not find the protocol id for server " + serverName);
-                        return;
-                    }
-
                     int protocolId = ProtocolDetectorService.getProtocolId(serverName);
 
                     UserConnection viaConnection = Via.getManager().getConnection(player.getUniqueId());
@@ -124,7 +118,6 @@ public class BungeeEncodeHandler extends MessageToMessageEncoder<ByteBuf> {
                             pipeline.add(prot.getValue());
                         }
 
-
                     viaConnection.put(info);
                     viaConnection.put(storage);
 
@@ -137,7 +130,6 @@ public class BungeeEncodeHandler extends MessageToMessageEncoder<ByteBuf> {
 
                     Object wrapper = ReflectionUtil.get(player, "ch", Object.class);
                     wrapper.getClass().getDeclaredMethod("setVersion", int.class).invoke(wrapper, protocolId);
-//                    ReflectionUtil.invoke(player, "init");
 
                     Object entityMap = Class.forName("net.md_5.bungee.entitymap.EntityMap").getDeclaredMethod("getEntityMap", int.class).invoke(null, protocolId);
                     ReflectionUtil.set(player, "entityRewrite", entityMap);

bungee/src/main/java/us/myles/ViaVersion/bungee/platform/BungeeConfigAPI.java

@@ -1,11 +1,12 @@
 package us.myles.ViaVersion.bungee.platform;
 
 import us.myles.ViaVersion.api.ViaVersionConfig;
+import us.myles.ViaVersion.api.protocol.ProtocolVersion;
+import us.myles.ViaVersion.bungee.providers.BungeeVersionProvider;
 import us.myles.ViaVersion.util.Config;
 
 import java.io.File;
-import java.util.Arrays;
-import java.util.List;
+import java.util.*;
 
 public class BungeeConfigAPI extends Config implements ViaVersionConfig {
     private static List<String> UNSUPPORTED = Arrays.asList("nms-player-ticking", "item-cache", "anti-xray-patch");
@@ -14,6 +15,38 @@ public class BungeeConfigAPI extends Config implements ViaVersionConfig {
         super(new File(configFile, "config.yml"));
     }
 
+    @Override
+    protected void handleConfig(Map<String, Object> config) {
+        // Parse servers
+        Map<String, Object> servers;
+        if (!(config.get("bungee-servers") instanceof Map)) {
+            servers = new HashMap<>();
+        } else {
+            servers = (Map) config.get("bungee-servers");
+        }
+        // Convert any bad Protocol Ids
+        for (Map.Entry<String, Object> entry : new HashSet<>(servers.entrySet())) {
+            if (!(entry.getValue() instanceof Integer)) {
+                if (entry.getValue() instanceof String) {
+                    ProtocolVersion found = ProtocolVersion.getClosest((String) entry.getValue());
+                    if (found != null) {
+                        servers.put(entry.getKey(), found.getId());
+                    } else {
+                        servers.remove(entry.getKey()); // Remove!
+                    }
+                } else {
+                    servers.remove(entry.getKey()); // Remove!
+                }
+            }
+        }
+        // Ensure default exists
+        if (!servers.containsKey("default")) {
+            servers.put("default", BungeeVersionProvider.getLowestSupportedVersion());
+        }
+        // Put back
+        config.put("bungee-servers", servers);
+    }
+
     @Override
     public List<String> getUnsupportedOptions() {
         return UNSUPPORTED;
@@ -167,4 +200,33 @@ public class BungeeConfigAPI extends Config implements ViaVersionConfig {
     public String getReloadDisconnectMsg() {
         return getString("reload-disconnect-msg", "Server reload, please rejoin!");
     }
+
+    /**
+     * What is the interval for checking servers via ping
+     * -1 for disabled
+     *
+     * @return Ping interval in seconds
+     */
+    public int getBungeePingInterval() {
+        return getInt("bungee-ping-interval", 60);
+    }
+
+    /**
+     * Should the bungee ping be saved to the config on change.
+     *
+     * @return True if it should save
+     */
+    public boolean isBungeePingSave() {
+        return getBoolean("bungee-ping-save", true);
+    }
+
+    /**
+     * Get the listed server protocols in the config.
+     * default will be listed as default.
+     *
+     * @return Map of String, Integer
+     */
+    public Map<String, Integer> getBungeeServerProtocols() {
+        return get("bungee-servers", Map.class, new HashMap<>());
+    }
 }

bungee/src/main/java/us/myles/ViaVersion/bungee/platform/BungeeViaLoader.java

@@ -1,6 +1,7 @@
 package us.myles.ViaVersion.bungee.platform;
 
 import lombok.AllArgsConstructor;
+import net.md_5.bungee.api.ProxyServer;
 import us.myles.ViaVersion.BungeePlugin;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.platform.ViaPlatformLoader;
@@ -18,9 +19,13 @@ public class BungeeViaLoader implements ViaPlatformLoader {
 
     @Override
     public void load() {
+        // Listeners
+        ProxyServer.getInstance().getPluginManager().registerListener(plugin, plugin);
+        // Providers
         Via.getManager().getProviders().use(MovementTransmitterProvider.class, new BungeeMovementTransmitter());
         Via.getManager().getProviders().use(VersionProvider.class, new BungeeVersionProvider());
-
-        plugin.getProxy().getScheduler().schedule(plugin, new ProtocolDetectorService(plugin), 0, 1, TimeUnit.MINUTES);
+        if (plugin.getConf().getBungeePingInterval() > 0) {
+            plugin.getProxy().getScheduler().schedule(plugin, new ProtocolDetectorService(plugin), 0, plugin.getConf().getBungeePingInterval(), TimeUnit.SECONDS);
+        }
     }
 }

bungee/src/main/java/us/myles/ViaVersion/bungee/providers/BungeeVersionProvider.java

@@ -1,6 +1,7 @@
 package us.myles.ViaVersion.bungee.providers;
 
 import com.google.common.collect.Lists;
+import net.md_5.bungee.api.ProxyServer;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.protocols.base.ProtocolInfo;
 import us.myles.ViaVersion.protocols.base.VersionProvider;
@@ -11,7 +12,7 @@ import java.util.List;
 public class BungeeVersionProvider extends VersionProvider {
     private static Class<?> ref;
 
-    public BungeeVersionProvider() {
+    static {
         try {
             ref = Class.forName("net.md_5.bungee.protocol.ProtocolConstants");
         } catch (Exception e) {
@@ -35,7 +36,7 @@ public class BungeeVersionProvider extends VersionProvider {
 
         // Older than bungee supports, get the lowest version
         if (info.getProtocolVersion() < list.get(0)) {
-            return list.get(0);
+            return getLowestSupportedVersion();
         }
 
         // Loop through all protocols to get the closest protocol id that bungee supports
@@ -47,4 +48,18 @@ public class BungeeVersionProvider extends VersionProvider {
         System.out.println("Panic, no protocol id found for " + info.getProtocolVersion());
         return info.getProtocolVersion();
     }
+
+    public static int getLowestSupportedVersion() {
+        List<Integer> list;
+        try {
+            list = ReflectionUtil.getStatic(ref, "SUPPORTED_VERSION_IDS", List.class);
+            return list.get(0);
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        // Fallback
+        return ProxyServer.getInstance().getProtocolVersion();
+    }
 }

bungee/src/main/java/us/myles/ViaVersion/bungee/service/ProtocolDetectorService.java

@@ -2,16 +2,22 @@ package us.myles.ViaVersion.bungee.service;
 
 import lombok.Getter;
 import net.md_5.bungee.api.Callback;
+import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.ServerPing;
 import net.md_5.bungee.api.config.ServerInfo;
 import us.myles.ViaVersion.BungeePlugin;
+import us.myles.ViaVersion.api.Via;
+import us.myles.ViaVersion.bungee.platform.BungeeConfigAPI;
+import us.myles.ViaVersion.bungee.providers.BungeeVersionProvider;
+import us.myles.ViaVersion.util.ReflectionUtil;
 
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
 public class ProtocolDetectorService implements Runnable {
-    private static final Map<String, Integer> protocolIds = new ConcurrentHashMap<>();
+    private static final Map<String, Integer> detectedProtocolIds = new ConcurrentHashMap<>();
     private BungeePlugin plugin;
     @Getter
     private static ProtocolDetectorService instance;
@@ -22,13 +28,21 @@ public class ProtocolDetectorService implements Runnable {
     }
 
     public static Integer getProtocolId(String serverName) {
-        if (!hasProtocolId(serverName))
-            return -1;
-        return protocolIds.get(serverName);
+        // Step 1. Check Config
+        Map<String, Integer> servers = ((BungeeConfigAPI) Via.getConfig()).getBungeeServerProtocols();
+        if (servers.containsKey(serverName)) {
+            return servers.get(serverName);
         }
-
-    public static boolean hasProtocolId(String serverName) {
-        return protocolIds.containsKey(serverName);
+        // Step 2. Check Detected
+        if (detectedProtocolIds.containsKey(serverName)) {
+            return detectedProtocolIds.get(serverName);
+        }
+        // Step 3. Use Default
+        if (servers.containsKey("default")) {
+            return servers.get("default");
+        }
+        // Step 4: Use bungee lowest supported... *cries*
+        return BungeeVersionProvider.getLowestSupportedVersion();
     }
 
     @Override
@@ -42,14 +56,27 @@ public class ProtocolDetectorService implements Runnable {
         value.ping(new Callback<ServerPing>() {
             @Override
             public void done(ServerPing serverPing, Throwable throwable) {
-                if (throwable == null)
-                    protocolIds.put(key, serverPing.getVersion().getProtocol());
+                if (throwable == null) {
+                    detectedProtocolIds.put(key, serverPing.getVersion().getProtocol());
+                    if (((BungeeConfigAPI) Via.getConfig()).isBungeePingSave()) {
+                        Map<String, Integer> servers = ((BungeeConfigAPI) Via.getConfig()).getBungeeServerProtocols();
+                        if (servers.containsKey(key)) {
+                            if (servers.get(key) == serverPing.getVersion().getProtocol()) {
+                                return;
+                            }
+                        }
+                        // Save Server
+                        servers.put(key, serverPing.getVersion().getProtocol());
+                        // Save
+                        Via.getPlatform().getConfigurationProvider().saveConfig();
+                    }
+                }
             }
         });
     }
 
-    public static Map<String, Integer> getProtocolIds() {
-        return new HashMap<>(protocolIds);
+    public static Map<String, Integer> getDetectedIds() {
+        return new HashMap<>(detectedProtocolIds);
     }
 
 }

common/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolVersion.java

@@ -51,7 +51,8 @@ public class ProtocolVersion {
         register(v1_9_2 = new ProtocolVersion(109, "1.9.2"));
         register(v1_9_3 = new ProtocolVersion(110, "1.9.3/4"));
         register(v1_10 = new ProtocolVersion(210, "1.10"));
-        register(vSNAPSHOT = new ProtocolVersion(309, "1.11-SNAPSHOT"));
+        // Snapshot uses colon as dashes are used other places...
+        register(vSNAPSHOT = new ProtocolVersion(309, "1.11:SNAPSHOT"));
         register(unknown = new ProtocolVersion(-1, "UNKNOWN"));
     }
 
@@ -80,6 +81,24 @@ public class ProtocolVersion {
         return Collections.unmodifiableList(new ArrayList<>(versions.values()));
     }
 
+    public static ProtocolVersion getClosest(String protocol) {
+        for (ProtocolVersion version : versions.values()) {
+            if (version.getName().equals(protocol))
+                return version;
+            if (version.getName().equals(protocol + ".x"))
+                return version;
+            String[] parts = version.getName().split("-");
+            for (String part : parts) {
+                if (part.equalsIgnoreCase(protocol)) {
+                    return version;
+                }
+                if (part.equals(protocol + ".x"))
+                    return version;
+            }
+        }
+        return null;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;

common/src/main/java/us/myles/ViaVersion/util/Config.java

@@ -1,5 +1,6 @@
 package us.myles.ViaVersion.util;
 
+import org.yaml.snakeyaml.DumperOptions;
 import org.yaml.snakeyaml.Yaml;
 import us.myles.ViaVersion.api.configuration.ConfigurationProvider;
 
@@ -9,17 +10,21 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 public abstract class Config implements ConfigurationProvider {
     private static ThreadLocal<Yaml> yaml = new ThreadLocal<Yaml>() {
         @Override
         protected Yaml initialValue() {
-            return new Yaml();
+            DumperOptions options = new DumperOptions();
+//            options.setPrettyFlow(true);
+            options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
+            return new Yaml(options);
         }
     };
     private CommentStore commentStore = new CommentStore('.', 2);
     private final File configFile;
-    private Map<String, Object> config;
+    private ConcurrentHashMap<String, Object> config;
 
     public Config(File configFile) {
         this.configFile = configFile;
@@ -70,12 +75,16 @@ public abstract class Config implements ConfigurationProvider {
         } catch (IOException e) {
             e.printStackTrace();
         }
+        // Call Handler
+        handleConfig(defaults);
         // Save
         saveConfig(location, defaults);
 
         return defaults;
     }
 
+    protected abstract void handleConfig(Map<String, Object> config);
+
     public void saveConfig(File location, Map<String, Object> config) {
         try {
             commentStore.writeComments(yaml.get().dump(config), location);
@@ -100,7 +109,7 @@ public abstract class Config implements ConfigurationProvider {
     @Override
     public void reloadConfig() {
         this.configFile.getParentFile().mkdirs();
-        this.config = loadConfig(this.configFile);
+        this.config = new ConcurrentHashMap<>(loadConfig(this.configFile));
     }
 
     @Override
@@ -108,6 +117,14 @@ public abstract class Config implements ConfigurationProvider {
         return this.config;
     }
 
+    public <T> T get(String key, Class<T> clazz, T def) {
+        if (this.config.containsKey(key)) {
+            return (T) this.config.get(key);
+        } else {
+            return def;
+        }
+    }
+
     public boolean getBoolean(String key, boolean def) {
         if (this.config.containsKey(key)) {
             return (boolean) this.config.get(key);

common/src/main/resources/config.yml

@@ -3,6 +3,7 @@
 # If you need help:
 # viaversion.com - Discussion tab
 # IRC - https://elmer.spi.gt/iris/?nick=&channels=viaversion #viaversion on irc.spi.gt
+# Docs - https://docs.viaversion.com/display/VIAVERSION/Configuration
 #
 #----------------------------------------------------------#
 #                     GLOBAL OPTIONS                       #
@@ -23,6 +24,28 @@ block-disconnect-msg: "You are using an unsupported Minecraft version!"
 reload-disconnect-msg: "Server reload, please rejoin!"
 #
 #----------------------------------------------------------#
+#                     BUNGEE OPTIONS                       #
+#----------------------------------------------------------#
+#
+# BungeeCord allows you to have different server versions inside.
+# Instead of you entering all the versions of these servers, we can ping them.
+#
+# What interval would you like us to ping at? (in seconds)
+# Use -1 to disable.
+bungee-ping-interval: 60
+# If the above is enabled, should we save the info to the config (in the section below)
+bungee-ping-save: true
+# To get a servers protocol, ViaVersion will do the following:
+# Look for the server in the following section, then look for the last ping if bungee-ping is enabled
+# otherwise use default.
+#
+# The format for the following is:
+#  servername: protocolversion
+# You can find protocol ids on http://wiki.vg/Protocol_version_numbers
+# It will fallback to the default option if none found.
+bungee-servers: {}
+#
+#----------------------------------------------------------#
 #                  GLOBAL PACKET LIMITER                   #
 #----------------------------------------------------------#
 #

sponge/src/main/java/us/myles/ViaVersion/SpongePlugin.java

@@ -13,7 +13,6 @@ import org.spongepowered.api.scheduler.SpongeExecutorService;
 import org.spongepowered.api.text.serializer.TextSerializers;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.ViaAPI;
-import us.myles.ViaVersion.api.ViaVersionConfig;
 import us.myles.ViaVersion.api.command.ViaCommandSender;
 import us.myles.ViaVersion.api.configuration.ConfigurationProvider;
 import us.myles.ViaVersion.api.platform.TaskId;
@@ -162,7 +161,7 @@ public class SpongePlugin implements ViaPlatform {
     }
 
     @Override
-    public ViaVersionConfig getConf() {
+    public SpongeConfigAPI getConf() {
         return conf;
     }
 

sponge/src/main/java/us/myles/ViaVersion/sponge/platform/SpongeConfigAPI.java

@@ -6,14 +6,20 @@ import us.myles.ViaVersion.util.Config;
 import java.io.File;
 import java.util.Arrays;
 import java.util.List;
+import java.util.Map;
 
 public class SpongeConfigAPI extends Config implements ViaVersionConfig {
-    private static List<String> UNSUPPORTED = Arrays.asList("anti-xray-patch");
+    private static List<String> UNSUPPORTED = Arrays.asList("anti-xray-patch", "bungee-ping-interval", "bungee-ping-save", "bungee-servers");
 
     public SpongeConfigAPI(File configFile) {
         super(new File(configFile, "config.yml"));
     }
 
+    @Override
+    protected void handleConfig(Map<String, Object> config) {
+        // Nothing Currently
+    }
+
     @Override
     public List<String> getUnsupportedOptions() {
         return UNSUPPORTED;