Limework/RedisBungee
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Drastic bandwidth usage reduction.

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This commit is contained in:
Tux 2016-01-10 12:47:49 -05:00
parent 3b2d157943
commit 1c3c1f3ef2
2 changed files with 60 additions and 21 deletions
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48
src/main/java/com/imaginarycode/minecraft/redisbungee/RedisBungee.java
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@ -60,6 +60,10 @@ public final class RedisBungee extends Plugin {
private boolean usingLua;
private LuaManager.Script serverToPlayersScript;
private LuaManager.Script getPlayerCountScript;
private LuaManager.Script getServerPlayersScript;
private static final Object SERVER_TO_PLAYERS_KEY = new Object();
private final InternalCache<Object, Multimap<String, UUID>> serverToPlayersCache = new InternalCache<>(2000);
/**
* Fetch the {@link RedisBungeeAPI} object created on plugin start.
@ -121,21 +125,30 @@ public final class RedisBungee extends Plugin {
}
final Multimap<String, UUID> serversToPlayers() {
Collection<String> data = (Collection<String>) serverToPlayersScript.eval(ImmutableList.<String>of(), getServerIds());
try {
return serverToPlayersCache.get(SERVER_TO_PLAYERS_KEY, new Callable<Multimap<String, UUID>>() {
@Override
public Multimap<String, UUID> call() throws Exception {
Collection<String> data = (Collection<String>) serverToPlayersScript.eval(ImmutableList.<String>of(), getServerIds());
ImmutableMultimap.Builder<String, UUID> builder = ImmutableMultimap.builder();
String key = null;
for (String s : data) {
if (key == null) {
key = s;
continue;
}
ImmutableMultimap.Builder<String, UUID> builder = ImmutableMultimap.builder();
String key = null;
for (String s : data) {
if (key == null) {
key = s;
continue;
}
builder.put(key, UUID.fromString(s));
key = null;
builder.put(key, UUID.fromString(s));
key = null;
}
return builder.build();
}
});
} catch (ExecutionException e) {
throw new RuntimeException(e);
}
return builder.build();
}
final int getCount() {
@ -181,15 +194,7 @@ public final class RedisBungee extends Plugin {
final Set<UUID> getPlayersOnServer(@NonNull String server) {
checkArgument(getProxy().getServers().containsKey(server), "server does not exist");
Multimap<String, UUID> serversToPlayers = serversToPlayers();
for (String s : serversToPlayers.keySet()) {
if (s.equalsIgnoreCase(server)) {
return ImmutableSet.copyOf(serversToPlayers.get(s));
}
}
return Collections.emptySet();
return ImmutableSet.copyOf((Collection<UUID>) getServerPlayersScript.eval(ImmutableList.<String>of(), ImmutableList.<String>of(server)));
}
final void sendProxyCommand(@NonNull String proxyId, @NonNull String command) {
@ -234,6 +239,7 @@ public final class RedisBungee extends Plugin {
LuaManager manager = new LuaManager(this);
serverToPlayersScript = manager.createScript(IOUtil.readInputStreamAsString(getResourceAsStream("lua/server_to_players.lua")));
getPlayerCountScript = manager.createScript(IOUtil.readInputStreamAsString(getResourceAsStream("lua/get_player_count.lua")));
getServerPlayersScript = manager.createScript(IOUtil.readInputStreamAsString(getResourceAsStream("lua/get_server_players.lua")));
}
break;
}

33
src/main/resources/lua/get_server_players.lua Normal file
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@ -0,0 +1,33 @@
local c = redis.call
local u = string.upper
local curTime = c("TIME")
local time = tonumber(curTime[1])
local heartbeats = c("HGETALL", "heartbeats")
local all = {}
local key
local preUppercased = u(ARGV[1])
for _, v in ipairs(heartbeats) do
if not key then
key = v
else
local n = tonumber(v)
if n then
if n + 30 >= time then
local players = c("SMEMBERS", "proxy:" .. key .. ":usersOnline")
for _, player in ipairs(players) do
local server = c("HGET", "player:" .. player, "server")
if server and u(server) == preUppercased then
all[#all + 1] = player
end
end
end
end
key = nil
end
end
return all