Velocity Dump WIP

proxy/src/main/java/com/velocitypowered/proxy/command/builtin/VelocityCommand.java

@@ -3,19 +3,27 @@ package com.velocitypowered.proxy.command.builtin;
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.gson.JsonObject;
 import com.velocitypowered.api.command.CommandSource;
 import com.velocitypowered.api.command.SimpleCommand;
 import com.velocitypowered.api.permission.Tristate;
 import com.velocitypowered.api.plugin.PluginContainer;
 import com.velocitypowered.api.plugin.PluginDescription;
 import com.velocitypowered.api.proxy.ProxyServer;
+import com.velocitypowered.api.proxy.server.RegisteredServer;
 import com.velocitypowered.api.util.ProxyVersion;
 import com.velocitypowered.proxy.VelocityServer;
+import com.velocitypowered.proxy.util.InformationUtils;
+
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.stream.Collectors;
+
 import net.kyori.adventure.identity.Identity;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TextComponent;
@@ -52,6 +60,7 @@ public class VelocityCommand implements SimpleCommand {
         .put("version", new Info(server))
         .put("plugins", new Plugins(server))
         .put("reload", new Reload(server))
+        .put("dump", new Dump(server))
         .build();
   }
 
@@ -289,4 +298,44 @@ public class VelocityCommand implements SimpleCommand {
       return source.getPermissionValue("velocity.command.plugins") == Tristate.TRUE;
     }
   }
+
+  private static class Dump implements SubCommand {
+
+    private final ProxyServer server;
+
+    private Dump(ProxyServer server) {
+      this.server = server;
+    }
+
+    @Override
+    public void execute(CommandSource source, String @NonNull [] args) {
+      if (args.length != 0) {
+        source.sendMessage(Identity.nil(), Component.text("/velocity dump", NamedTextColor.RED));
+        return;
+      }
+
+      Collection<RegisteredServer> allServers = ImmutableSet.copyOf(server.getAllServers());
+      JsonObject servers = new JsonObject();
+      for (RegisteredServer iter : allServers) {
+        servers.add(iter.getServerInfo().getName(),
+                InformationUtils.collectServerInfo(iter));
+      }
+
+      JsonObject proxyConfig = InformationUtils.collectProxyConfig(server.getConfiguration());
+      proxyConfig.add("servers", servers);
+
+      JsonObject dump = new JsonObject();
+      dump.add("versionInfo", InformationUtils.collectProxyInfo(server.getVersion()));
+      dump.add("platform", InformationUtils.collectEnvironmentInfo());
+      dump.add("config", proxyConfig);
+      dump.add("plugins", InformationUtils.collectPluginInfo(server));
+
+      // TODO: Finish
+    }
+
+    @Override
+    public boolean hasPermission(final CommandSource source, final String @NonNull [] args) {
+      return source.getPermissionValue("velocity.command.plugins") == Tristate.TRUE;
+    }
+  }
 }

proxy/src/main/java/com/velocitypowered/proxy/config/VelocityConfiguration.java

@@ -7,6 +7,7 @@ import com.electronwill.nightconfig.toml.TomlFormat;
 import com.google.common.base.MoreObjects;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import com.google.gson.annotations.Expose;
 import com.velocitypowered.api.proxy.config.ProxyConfig;
 import com.velocitypowered.api.util.Favicon;
 import com.velocitypowered.proxy.util.AddressUtil;
@@ -42,20 +43,20 @@ public class VelocityConfiguration implements ProxyConfig {
 
   private static final Logger logger = LogManager.getLogger(VelocityConfiguration.class);
 
-  private String bind = "0.0.0.0:25577";
+  @Expose private String bind = "0.0.0.0:25577";
-  private String motd = "&3A Velocity Server";
+  @Expose private String motd = "&3A Velocity Server";
-  private int showMaxPlayers = 500;
+  @Expose private int showMaxPlayers = 500;
-  private boolean onlineMode = true;
+  @Expose private boolean onlineMode = true;
-  private boolean preventClientProxyConnections = false;
+  @Expose private boolean preventClientProxyConnections = false;
-  private PlayerInfoForwarding playerInfoForwardingMode = PlayerInfoForwarding.NONE;
+  @Expose private PlayerInfoForwarding playerInfoForwardingMode = PlayerInfoForwarding.NONE;
   private byte[] forwardingSecret = generateRandomString(12).getBytes(StandardCharsets.UTF_8);
-  private boolean announceForge = false;
+  @Expose private boolean announceForge = false;
-  private boolean onlineModeKickExistingPlayers = false;
+  @Expose private boolean onlineModeKickExistingPlayers = false;
-  private PingPassthroughMode pingPassthrough = PingPassthroughMode.DISABLED;
+  @Expose private PingPassthroughMode pingPassthrough = PingPassthroughMode.DISABLED;
   private final Servers servers;
   private final ForcedHosts forcedHosts;
-  private final Advanced advanced;
+  @Expose private final Advanced advanced;
-  private final Query query;
+  @Expose private final Query query;
   private final Metrics metrics;
   private final Messages messages;
   private net.kyori.adventure.text.@MonotonicNonNull Component motdAsComponent;
@@ -622,18 +623,18 @@ public class VelocityConfiguration implements ProxyConfig {
 
   private static class Advanced {
 
-    private int compressionThreshold = 256;
+    @Expose private int compressionThreshold = 256;
-    private int compressionLevel = -1;
+    @Expose private int compressionLevel = -1;
-    private int loginRatelimit = 3000;
+    @Expose private int loginRatelimit = 3000;
-    private int connectionTimeout = 5000;
+    @Expose private int connectionTimeout = 5000;
-    private int readTimeout = 30000;
+    @Expose private int readTimeout = 30000;
-    private boolean proxyProtocol = false;
+    @Expose private boolean proxyProtocol = false;
-    private boolean tcpFastOpen = false;
+    @Expose private boolean tcpFastOpen = false;
-    private boolean bungeePluginMessageChannel = true;
+    @Expose private boolean bungeePluginMessageChannel = true;
-    private boolean showPingRequests = false;
+    @Expose private boolean showPingRequests = false;
-    private boolean failoverOnUnexpectedServerDisconnect = true;
+    @Expose private boolean failoverOnUnexpectedServerDisconnect = true;
-    private boolean announceProxyCommands = true;
+    @Expose private boolean announceProxyCommands = true;
-    private boolean logCommandExecutions = false;
+    @Expose private boolean logCommandExecutions = false;
 
     private Advanced() {
     }
@@ -725,10 +726,10 @@ public class VelocityConfiguration implements ProxyConfig {
 
   private static class Query {
 
-    private boolean queryEnabled = false;
+    @Expose private boolean queryEnabled = false;
-    private int queryPort = 25577;
+    @Expose private int queryPort = 25577;
-    private String queryMap = "Velocity";
+    @Expose private String queryMap = "Velocity";
-    private boolean showPlugins = false;
+    @Expose private boolean showPlugins = false;
 
     private Query() {
     }

proxy/src/main/java/com/velocitypowered/proxy/util/InformationUtils.java

@@ -0,0 +1,154 @@
+package com.velocitypowered.proxy.util;
+
+import com.google.common.collect.ImmutableList;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.velocitypowered.api.plugin.PluginContainer;
+import com.velocitypowered.api.plugin.PluginDescription;
+import com.velocitypowered.api.plugin.meta.PluginDependency;
+import com.velocitypowered.api.proxy.ProxyServer;
+import com.velocitypowered.api.proxy.config.ProxyConfig;
+import com.velocitypowered.api.proxy.server.RegisteredServer;
+import com.velocitypowered.api.util.ProxyVersion;
+
+import io.netty.channel.unix.DomainSocketAddress;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+import java.util.List;
+import joptsimple.internal.Strings;
+
+public enum InformationUtils {
+  ;
+
+  /**
+   * Retrieves a {@link JsonArray} containing basic information about all
+   * running plugins on the {@link ProxyServer} instance.
+   *
+   * @param proxy the proxy instance to retrieve from
+   * @return {@link JsonArray} containing zero or more {@link JsonObject}
+   */
+  public static JsonArray collectPluginInfo(ProxyServer proxy) {
+    List<PluginContainer> allPlugins = ImmutableList.copyOf(
+            proxy.getPluginManager().getPlugins());
+    JsonArray plugins = new JsonArray();
+
+    for (PluginContainer plugin : allPlugins) {
+      PluginDescription desc = plugin.getDescription();
+      JsonObject current = new JsonObject();
+      current.addProperty("id", desc.getId());
+      if (desc.getName().isPresent()) {
+        current.addProperty("name", desc.getName().get());
+      }
+      if (desc.getVersion().isPresent()) {
+        current.addProperty("version", desc.getVersion().get());
+      }
+      if (!desc.getAuthors().isEmpty()) {
+        current.addProperty("authors",
+                Strings.join(desc.getAuthors(), ","));
+      }
+      if (desc.getDescription().isPresent()) {
+        current.addProperty("description", desc.getDescription().get());
+      }
+      if (desc.getUrl().isPresent()) {
+        current.addProperty("url", desc.getUrl().get());
+      }
+      if (!desc.getDependencies().isEmpty()) {
+        JsonArray dependencies = new JsonArray();
+        for (PluginDependency dependency : desc.getDependencies()) {
+          dependencies.add(dependency.getId());
+        }
+        current.add("dependencies", dependencies);
+      }
+      plugins.add(current);
+    }
+    return plugins;
+  }
+
+  /**
+   * Creates a {@link JsonObject} containing information about the
+   * current environment the project is run under.
+   *
+   * @return {@link JsonObject} containing environment info
+   */
+  public static JsonObject collectEnvironmentInfo() {
+    JsonObject envInfo = new JsonObject();
+    envInfo.addProperty("operatingSystemType", System.getProperty("os.name"));
+    envInfo.addProperty("operatingSystemVersion", System.getProperty("os.version"));
+    envInfo.addProperty("operatingSystemArchitecture", System.getProperty("os.arch"));
+    envInfo.addProperty("javaVersion", System.getProperty("java.version"));
+    envInfo.addProperty("javaVendor", System.getProperty("java.vendor"));
+    return envInfo;
+  }
+
+  /**
+   * Creates a {@link JsonObject} containing most relevant
+   * information of the {@link RegisteredServer} for diagnosis.
+   *
+   * @param server the server to evaluate
+   * @return {@link JsonObject} containing server and diagnostic info
+   */
+  public static JsonObject collectServerInfo(RegisteredServer server) {
+    JsonObject info = new JsonObject();
+    info.addProperty("currentPlayers", server.getPlayersConnected().size());
+    SocketAddress address = server.getServerInfo().getAddress();
+    if (address instanceof InetSocketAddress) {
+      InetSocketAddress iaddr = (InetSocketAddress) address;
+      info.addProperty("socketType", "EventLoop");
+      info.addProperty("unresolved", iaddr.isUnresolved());
+      // Greetings form Netty 4aa10db9
+      info.addProperty("host", iaddr.getHostString());
+      info.addProperty("port", iaddr.getPort());
+    } else if (address instanceof DomainSocketAddress) {
+      DomainSocketAddress daddr = (DomainSocketAddress) address;
+      info.addProperty("socketType", "Unix/Epoll");
+      info.addProperty("host", daddr.path());
+    } else {
+      info.addProperty("socketType", "Unknown/Generic");
+      info.addProperty("host", address.toString());
+    }
+    return info;
+  }
+
+  /**
+   * Creates a {@link JsonObject} containing information about the
+   * current environment the project is run under.
+   *
+   * @param version the proxy instance to retrieve from
+   * @return {@link JsonObject} containing environment info
+   */
+  public static JsonObject collectProxyInfo(ProxyVersion version) {
+    return (JsonObject) serializeObject(version, false);
+  }
+
+  /**
+   * Creates a {@link JsonObject} containing most relevant
+   * information of the {@link ProxyConfig} for diagnosis.
+   *
+   * @param config the config instance to retrieve from
+   * @return {@link JsonObject} containing select config values
+   */
+  public static JsonObject collectProxyConfig(ProxyConfig config) {
+    return (JsonObject) serializeObject(config, true);
+  }
+
+  private static JsonElement serializeObject(Object toSerialize, boolean withExcludes) {
+    return JsonParser.parseString(
+            withExcludes ? GSON_WITH_EXCLUDES.toJson(toSerialize) :
+            GSON_WITHOUT_EXCLUDES.toJson(toSerialize));
+  }
+
+  private static final Gson GSON_WITH_EXCLUDES = new GsonBuilder()
+          .setPrettyPrinting()
+          .excludeFieldsWithoutExposeAnnotation()
+          .create();
+
+  private static final Gson GSON_WITHOUT_EXCLUDES = new GsonBuilder()
+          .setPrettyPrinting()
+          .create();
+
+
+}