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https://github.com/PaperMC/Waterfall.git
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303 lines
11 KiB
Diff
303 lines
11 KiB
Diff
From 0a3a3e40c649e188cf4aa5ff1d1fbcc028df9ab5 Mon Sep 17 00:00:00 2001
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From: Troy Frew <fuzzy_bot@arenaga.me>
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Date: Wed, 29 Jun 2016 04:29:25 +0200
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Subject: [PATCH] Add dynamic server addition/removal api.
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The provided methods will not move a player if a server is removed or the server ip/port is changed, however the methods return the old ServerInfo object for you to handle that yourself if needed.
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Thanks to Overcast for the idea
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diff --git a/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java b/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
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index 5a49050a..f04e2bf4 100644
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--- a/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
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+++ b/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
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@@ -32,9 +32,83 @@ public interface ProxyConfig
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/**
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* Set of all servers.
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+ *
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+ * @deprecated The returned map may be modified concurrently by the proxy.
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+ * The safe alternative is {@link #getServersCopy()}.
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*/
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+ @Deprecated // Waterfall
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Map<String, ServerInfo> getServers();
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+ // Waterfall start - Dynamic server addition/removal api
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+ /**
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+ * Return all servers registered to this proxy, keyed by name. The returned map
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+ * is an immutable snapshot of the actual server collection. It cannot be modified,
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+ * and it will not change.
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+ *
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+ * @return all registered remote server destinations
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+ */
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+ Map<String, ServerInfo> getServersCopy();
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+
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+ /**
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+ * Gets the server info of a server.
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+ *
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+ * @param name the name of the configured server
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+ * @return the server info belonging to the specified server
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+ */
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+ ServerInfo getServerInfo(String name);
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+
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+ /**
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+ * Register the given server to the proxy.
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+ * Any currently registered server with the same name will be replaced.
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+ * This change is not saved to config.yml
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+ *
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+ * @return the previously registered server with the same name, or null if there was no such server.
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+ */
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+ ServerInfo addServer(ServerInfo server);
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+
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+ /**
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+ * Register all of the given servers to the proxy.
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+ * This change is not saved to config.yml
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+ *
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+ * @return true if any servers were added or replaced.
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+ */
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+ boolean addServers(Collection<ServerInfo> servers);
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+
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+ /**
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+ * Un-register the server with the given name from the proxy.
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+ * This change is not saved to config.yml
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+ *
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+ * @return the server that was removed, or null if there is no server with the given name.
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+ */
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+ ServerInfo removeServerNamed(String name);
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+
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+ /**
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+ * Un-register the given server from the proxy.
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+ * The server is matched by name only, other fields in the given {@link ServerInfo} are ignored.
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+ * This change is not saved to config.yml
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+ *
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+ * @return the server that was removed, or null if there is no server with a matching name.
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+ */
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+ ServerInfo removeServer(ServerInfo server);
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+
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+ /**
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+ * Un-register servers with any of the given names from the proxy.
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+ * This change is not saved to config.yml
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+ *
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+ * @return true if any servers were removed.
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+ */
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+ boolean removeServersNamed(Collection<String> names);
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+
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+ /**
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+ * Un-register all of the given servers from the proxy.
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+ * The servers are matched by name only, other fields in the given {@link ServerInfo} are ignored.
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+ * This change is not saved to config.yml
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+ *
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+ * @return true if any servers were removed.
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+ */
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+ boolean removeServers(Collection<ServerInfo> servers);
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+ // Waterfall end
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+
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/**
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* Does the server authenticate with mojang
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*/
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diff --git a/api/src/main/java/net/md_5/bungee/api/ProxyServer.java b/api/src/main/java/net/md_5/bungee/api/ProxyServer.java
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index 11c5b685..1c011d08 100644
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--- a/api/src/main/java/net/md_5/bungee/api/ProxyServer.java
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+++ b/api/src/main/java/net/md_5/bungee/api/ProxyServer.java
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@@ -93,9 +93,25 @@ public abstract class ProxyServer
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* return a fresh map each time.
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*
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* @return all registered remote server destinations
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+ *
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+ * @deprecated The returned map is part of the proxy's internal state,
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+ * and may be modified concurrently by the proxy.
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+ * The safe alternative is {@link #getServersCopy()}.
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*/
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+ @Deprecated // Waterfall
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public abstract Map<String, ServerInfo> getServers();
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+ // Waterfall begin - Cloned servers map
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+ /**
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+ * Return all servers registered to this proxy, keyed by name. The returned map
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+ * is an immutable snapshot of the actual server collection. It cannot be modified,
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+ * and it will not change.
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+ *
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+ * @return all registered remote server destinations
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+ */
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+ public abstract Map<String, ServerInfo> getServersCopy();
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+ // Waterfall end
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+
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/**
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* Gets the server info of a server.
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*
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diff --git a/config/src/main/java/net/md_5/bungee/config/Configuration.java b/config/src/main/java/net/md_5/bungee/config/Configuration.java
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index 262b29c8..d7ed3e11 100644
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--- a/config/src/main/java/net/md_5/bungee/config/Configuration.java
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+++ b/config/src/main/java/net/md_5/bungee/config/Configuration.java
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@@ -44,6 +44,13 @@ public final class Configuration
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}
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}
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+ // Waterfall start - Allow configuration objects to be cloned
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+ public Configuration(Configuration values, Configuration defaults)
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+ {
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+ this( values.self, defaults );
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+ }
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+ // Waterfall end
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+
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private Configuration getSectionFor(String path)
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{
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int index = path.indexOf( SEPARATOR );
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diff --git a/module/cmd-server/src/main/java/net/md_5/bungee/module/cmd/server/CommandServer.java b/module/cmd-server/src/main/java/net/md_5/bungee/module/cmd/server/CommandServer.java
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index b3ff750f..43d11cf2 100644
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--- a/module/cmd-server/src/main/java/net/md_5/bungee/module/cmd/server/CommandServer.java
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+++ b/module/cmd-server/src/main/java/net/md_5/bungee/module/cmd/server/CommandServer.java
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@@ -83,7 +83,7 @@ public class CommandServer extends Command implements TabExecutor
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@Override
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public Iterable<String> onTabComplete(final CommandSender sender, final String[] args)
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{
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- return ( args.length > 1 ) ? Collections.EMPTY_LIST : Iterables.transform( Iterables.filter( ProxyServer.getInstance().getServers().values(), new Predicate<ServerInfo>()
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+ return ( args.length > 1 ) ? Collections.EMPTY_LIST : Iterables.transform( Iterables.filter( ProxyServer.getInstance().getServersCopy().values(), new Predicate<ServerInfo>() // Waterfall: use #getServersCopy()
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{
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private final String lower = ( args.length == 0 ) ? "" : args[0].toLowerCase();
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diff --git a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
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index 40f28a12..f14821b4 100644
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--- a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
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+++ b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
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@@ -588,10 +588,18 @@ public class BungeeCord extends ProxyServer
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return config.getServers();
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}
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+ // Waterfall start
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+ @Override
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+ public Map<String, ServerInfo> getServersCopy()
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+ {
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+ return config.getServersCopy();
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+ }
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+ // Waterfall end
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+
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@Override
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public ServerInfo getServerInfo(String name)
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{
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- return getServers().get( name );
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+ return config.getServerInfo( name ); // Waterfall
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}
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@Override
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diff --git a/proxy/src/main/java/net/md_5/bungee/conf/Configuration.java b/proxy/src/main/java/net/md_5/bungee/conf/Configuration.java
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index d131c02c..a755121a 100644
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--- a/proxy/src/main/java/net/md_5/bungee/conf/Configuration.java
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+++ b/proxy/src/main/java/net/md_5/bungee/conf/Configuration.java
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@@ -1,6 +1,7 @@
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package net.md_5.bungee.conf;
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import com.google.common.base.Preconditions;
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+import com.google.common.collect.ImmutableMap; // Waterfall
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import gnu.trove.map.TMap;
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import java.io.File;
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import java.io.IOException;
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@@ -11,6 +12,7 @@ import java.util.UUID;
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import java.util.logging.Level;
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import javax.imageio.ImageIO;
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import lombok.Getter;
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+import lombok.Synchronized; // Waterfall
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import net.md_5.bungee.BungeeCord;
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import net.md_5.bungee.api.Favicon;
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@@ -42,6 +44,7 @@ public abstract class Configuration implements ProxyConfig
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* Set of all listeners.
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*/
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private Collection<ListenerInfo> listeners;
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+ private final Object serversLock = new Object(); // Waterfall
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/**
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* Set of all servers.
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*/
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@@ -62,6 +65,7 @@ public abstract class Configuration implements ProxyConfig
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private int compressionThreshold = 256;
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private boolean preventProxyConnections;
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+ @Synchronized("serversLock") // Waterfall
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public void load()
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{
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ConfigurationAdapter adapter = ProxyServer.getInstance().getConfigurationAdapter();
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@@ -102,7 +106,7 @@ public abstract class Configuration implements ProxyConfig
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servers = new CaseInsensitiveMap<>( newServers );
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} else
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{
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- Map<String, ServerInfo> oldServers = this.servers;
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+ Map<String, ServerInfo> oldServers = getServersCopy();
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this.servers = new CaseInsensitiveMap<>(newServers);
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for ( ServerInfo oldServer : oldServers.values() )
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@@ -160,4 +164,71 @@ public abstract class Configuration implements ProxyConfig
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{
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return favicon;
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}
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+
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+ // Waterfall start
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+ @Override
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+ @Synchronized("serversLock")
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+ public Map<String, ServerInfo> getServersCopy() {
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+ return ImmutableMap.copyOf( servers );
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+ }
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+
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+ @Override
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+ @Synchronized("serversLock")
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+ public ServerInfo getServerInfo(String name)
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+ {
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+ return this.servers.get( name );
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+ }
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+
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+ @Override
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+ @Synchronized("serversLock")
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+ public ServerInfo addServer(ServerInfo server)
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+ {
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+ return this.servers.put( server.getName(), server );
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+ }
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+
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+ @Override
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+ @Synchronized("serversLock")
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+ public boolean addServers(Collection<ServerInfo> servers)
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+ {
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+ boolean changed = false;
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+ for ( ServerInfo server : servers )
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+ {
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+ if ( server != this.servers.put( server.getName(), server ) ) changed = true;
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+ }
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+ return changed;
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+ }
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+
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+ @Override
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+ @Synchronized("serversLock")
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+ public ServerInfo removeServerNamed(String name)
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+ {
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+ return this.servers.remove( name );
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+ }
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+
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+ @Override
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+ @Synchronized("serversLock")
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+ public ServerInfo removeServer(ServerInfo server)
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+ {
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+ return this.servers.remove( server.getName() );
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+ }
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+
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+ @Override
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+ @Synchronized("serversLock")
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+ public boolean removeServersNamed(Collection<String> names)
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+ {
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+ return this.servers.keySet().removeAll( names );
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+ }
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+
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+ @Override
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+ @Synchronized("serversLock")
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+ public boolean removeServers(Collection<ServerInfo> servers)
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+ {
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+ boolean changed = false;
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+ for ( ServerInfo server : servers )
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+ {
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+ if ( null != this.servers.remove( server.getName() ) ) changed = true;
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+ }
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+ return changed;
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+ }
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+ // Waterfall end
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}
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--
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2.16.1
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