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geforkt von Mirrors/Paper

Add GS4 Query event

Dieser Commit ist enthalten in:
Mark Vainomaa 2019-03-17 21:46:27 +02:00
Ursprung 13d4e540cf
Commit 86603709de

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@ -0,0 +1,395 @@
package com.destroystokyo.paper.event.server;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.bukkit.Server;
import org.bukkit.event.Event;
import org.bukkit.event.HandlerList;
import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
import org.jetbrains.annotations.ApiStatus;
import org.jspecify.annotations.NullMarked;
/**
* This event is fired if server is getting queried over GS4 Query protocol.
* <br>
* Adapted from Velocity's ProxyQueryEvent
*
* @author Mark Vainomaa
*/
@NullMarked
public final class GS4QueryEvent extends Event {
private static final HandlerList HANDLER_LIST = new HandlerList();
private final QueryType queryType;
private final InetAddress querierAddress;
private QueryResponse response;
@ApiStatus.Internal
public GS4QueryEvent(final QueryType queryType, final InetAddress querierAddress, final QueryResponse response) {
super(true); // should always be called async
this.queryType = queryType;
this.querierAddress = querierAddress;
this.response = response;
}
/**
* Get query type
*
* @return query type
*/
public QueryType getQueryType() {
return this.queryType;
}
/**
* Get querier address
*
* @return querier address
*/
public InetAddress getQuerierAddress() {
return this.querierAddress;
}
/**
* Get query response
*
* @return query response
*/
public QueryResponse getResponse() {
return this.response;
}
/**
* Set query response
*
* @param response query response
*/
public void setResponse(final QueryResponse response) {
this.response = Preconditions.checkNotNull(response, "response");
}
@Override
public HandlerList getHandlers() {
return HANDLER_LIST;
}
public static HandlerList getHandlerList() {
return HANDLER_LIST;
}
/**
* The type of query
*/
public enum QueryType {
/**
* Basic query asks only a subset of information, such as motd, game type (hardcoded to <pre>MINECRAFT</pre>), map,
* current players, max players, server port and server motd
*/
BASIC,
/**
* Full query asks pretty much everything present on this event (only hardcoded values cannot be modified here).
*/
FULL
}
public static final class QueryResponse {
private final String motd;
private final String gameVersion;
private final String map;
private final int currentPlayers;
private final int maxPlayers;
private final String hostname;
private final int port;
private final Collection<String> players;
private final String serverVersion;
private final Collection<PluginInformation> plugins;
private QueryResponse(final String motd, final String gameVersion, final String map, final int currentPlayers, final int maxPlayers, final String hostname, final int port, final Collection<String> players, final String serverVersion, final Collection<PluginInformation> plugins) {
this.motd = motd;
this.gameVersion = gameVersion;
this.map = map;
this.currentPlayers = currentPlayers;
this.maxPlayers = maxPlayers;
this.hostname = hostname;
this.port = port;
this.players = players;
this.serverVersion = serverVersion;
this.plugins = plugins;
}
/**
* Get motd which will be used to reply to the query. By default, it is {@link Server#getMotd()}.
*
* @return motd
*/
public String getMotd() {
return this.motd;
}
/**
* Get game version which will be used to reply to the query. By default, supported Minecraft versions range is sent.
*
* @return game version
*/
public String getGameVersion() {
return this.gameVersion;
}
/**
* Get map name which will be used to reply to the query. By default {@code world} is sent.
*
* @return map name
*/
public String getMap() {
return this.map;
}
/**
* Get current online player count which will be used to reply to the query.
*
* @return online player count
*/
public int getCurrentPlayers() {
return this.currentPlayers;
}
/**
* Get max player count which will be used to reply to the query.
*
* @return max player count
*/
public int getMaxPlayers() {
return this.maxPlayers;
}
/**
* Get server (public facing) hostname.
*
* @return server hostname
*/
public String getHostname() {
return this.hostname;
}
/**
* Get server (public facing) port.
*
* @return server port
*/
public int getPort() {
return this.port;
}
/**
* Get collection of players which will be used to reply to the query.
*
* @return collection of players
*/
public Collection<String> getPlayers() {
return this.players;
}
/**
* Get server software (name and version) which will be used to reply to the query.
*
* @return server software
*/
public String getServerVersion() {
return this.serverVersion;
}
/**
* Get list of plugins which will be used to reply to the query.
*
* @return collection of plugins
*/
public Collection<PluginInformation> getPlugins() {
return this.plugins;
}
/**
* Creates a new {@link Builder} instance from data represented by this response.
*
* @return {@link QueryResponse} builder
*/
public Builder toBuilder() {
return QueryResponse.builder()
.motd(this.getMotd())
.gameVersion(this.getGameVersion())
.map(this.getMap())
.currentPlayers(this.getCurrentPlayers())
.maxPlayers(this.getMaxPlayers())
.hostname(this.getHostname())
.port(this.getPort())
.players(this.getPlayers())
.serverVersion(this.getServerVersion())
.plugins(this.getPlugins());
}
/**
* Creates a new {@link Builder} instance.
*
* @return {@link QueryResponse} builder
*/
public static Builder builder() {
return new Builder();
}
/**
* A builder for {@link QueryResponse} objects.
*/
public static final class Builder {
private @MonotonicNonNull String motd;
private @MonotonicNonNull String gameVersion;
private @MonotonicNonNull String map;
private @MonotonicNonNull String hostname;
private @MonotonicNonNull String serverVersion;
private int currentPlayers;
private int maxPlayers;
private int port;
private final List<String> players = new ArrayList<>();
private final List<PluginInformation> plugins = new ArrayList<>();
private Builder() {
}
public Builder motd(final String motd) {
this.motd = Preconditions.checkNotNull(motd, "motd");
return this;
}
public Builder gameVersion(final String gameVersion) {
this.gameVersion = Preconditions.checkNotNull(gameVersion, "gameVersion");
return this;
}
public Builder map(final String map) {
this.map = Preconditions.checkNotNull(map, "map");
return this;
}
public Builder currentPlayers(final int currentPlayers) {
Preconditions.checkArgument(currentPlayers >= 0, "currentPlayers cannot be negative");
this.currentPlayers = currentPlayers;
return this;
}
public Builder maxPlayers(final int maxPlayers) {
Preconditions.checkArgument(maxPlayers >= 0, "maxPlayers cannot be negative");
this.maxPlayers = maxPlayers;
return this;
}
public Builder hostname(final String hostname) {
this.hostname = Preconditions.checkNotNull(hostname, "hostname");
return this;
}
public Builder port(final int port) {
Preconditions.checkArgument(port >= 1 && port <= 65535, "port must be between 1-65535");
this.port = port;
return this;
}
public Builder players(final Collection<String> players) {
this.players.addAll(Preconditions.checkNotNull(players, "players"));
return this;
}
public Builder players(final String... players) {
this.players.addAll(Arrays.asList(Preconditions.checkNotNull(players, "players")));
return this;
}
public Builder clearPlayers() {
this.players.clear();
return this;
}
public Builder serverVersion(final String serverVersion) {
this.serverVersion = Preconditions.checkNotNull(serverVersion, "serverVersion");
return this;
}
public Builder plugins(final Collection<PluginInformation> plugins) {
this.plugins.addAll(Preconditions.checkNotNull(plugins, "plugins"));
return this;
}
public Builder plugins(final PluginInformation... plugins) {
this.plugins.addAll(Arrays.asList(Preconditions.checkNotNull(plugins, "plugins")));
return this;
}
public Builder clearPlugins() {
this.plugins.clear();
return this;
}
/**
* Builds new {@link QueryResponse} with supplied data.
*
* @return response
*/
public QueryResponse build() {
return new QueryResponse(
Preconditions.checkNotNull(this.motd, "motd"),
Preconditions.checkNotNull(this.gameVersion, "gameVersion"),
Preconditions.checkNotNull(this.map, "map"),
this.currentPlayers,
this.maxPlayers,
Preconditions.checkNotNull(this.hostname, "hostname"),
this.port,
ImmutableList.copyOf(this.players),
Preconditions.checkNotNull(this.serverVersion, "serverVersion"),
ImmutableList.copyOf(this.plugins)
);
}
}
/**
* Plugin information
*/
public static class PluginInformation {
private String name;
private String version;
public PluginInformation(final String name, final String version) {
this.name = Preconditions.checkNotNull(name, "name");
this.version = Preconditions.checkNotNull(version, "version");
}
public String getName() {
return this.name;
}
public void setName(final String name) {
this.name = name;
}
public void setVersion(final String version) {
this.version = version;
}
public String getVersion() {
return this.version;
}
public static PluginInformation of(final String name, final String version) {
return new PluginInformation(name, version);
}
}
}
}