Limework/RedisBungee
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One more attempt to fix player count. Now it's calculated with Lua.

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This commit is contained in:
Tux 2015-12-06 16:31:21 -05:00
parent 565de9b4c0
commit 12ad0c792b
2 changed files with 39 additions and 39 deletions
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54
src/main/java/com/imaginarycode/minecraft/redisbungee/RedisBungee.java
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@ -20,7 +20,6 @@ import net.md_5.bungee.config.ConfigurationProvider;
import net.md_5.bungee.config.YamlConfiguration;
import redis.clients.jedis.*;
import redis.clients.jedis.exceptions.JedisConnectionException;
import redis.clients.jedis.exceptions.JedisException;
import java.io.*;
import java.util.*;
@ -60,6 +59,7 @@ public final class RedisBungee extends Plugin {
private ScheduledTask heartbeatTask;
private boolean usingLua;
private LuaManager.Script serverToPlayersScript;
private LuaManager.Script getPlayerCountScript;
/**
* Fetch the {@link RedisBungeeAPI} object created on plugin start.
@ -121,51 +121,26 @@ public final class RedisBungee extends Plugin {
}
final Multimap<String, UUID> serversToPlayers() {
if (usingLua) {
Collection<String> data = (Collection<String>) serverToPlayersScript.eval(ImmutableList.<String>of(), getServerIds());
Collection<String> data = (Collection<String>) serverToPlayersScript.eval(ImmutableList.<String>of(), getServerIds());
ImmutableMultimap.Builder<String, UUID> builder = ImmutableMultimap.builder();
// TODO: This seems pretty slow, but execution times over the long term seem to stay below that of the
// Java implementation, at least. If you have a better idea, I want to see it!
String key = null;
for (String s : data) {
if (key == null) {
key = s;
continue;
}
builder.put(key, UUID.fromString(s));
key = null;
ImmutableMultimap.Builder<String, UUID> builder = ImmutableMultimap.builder();
String key = null;
for (String s : data) {
if (key == null) {
key = s;
continue;
}
return builder.build();
} else {
ImmutableMultimap.Builder<String, UUID> multimapBuilder = ImmutableMultimap.builder();
for (UUID p : getPlayers()) {
String name = dataManager.getServer(p);
if (name != null)
multimapBuilder.put(name, p);
}
return multimapBuilder.build();
builder.put(key, UUID.fromString(s));
key = null;
}
return builder.build();
}
final int getCount() {
int c = 0;
if (pool != null) {
try (Jedis rsc = pool.getResource()) {
for (String i : getServerIds()) {
c += rsc.scard("proxy:" + i + ":usersOnline");
}
} catch (JedisConnectionException e) {
// Redis server has disappeared!
getLogger().log(Level.SEVERE, "Unable to get connection from pool - did your Redis server go away?", e);
throw new RuntimeException("Unable to get total player count", e);
}
}
return c;
Long count = (Long) getPlayerCountScript.eval(ImmutableList.<String>of(), ImmutableList.<String>of());
return count.intValue();
}
private Set<String> getLocalPlayersAsUuidStrings() {
@ -250,6 +225,7 @@ public final class RedisBungee extends Plugin {
} else {
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")));
}
break;
}

24
src/main/resources/lua/get_player_count.lua Normal file
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@ -0,0 +1,24 @@
local c = redis.call
local curTime = c("TIME")
local time = tonumber(curTime[1])
local heartbeats = c("HGETALL", "heartbeats")
local total = 0
local key
for _, v in pairs(heartbeats) do
if not key then
key = v
else
local n = tonumber(v)
if n then
if n + 30 >= time then
total = total + c("SCARD", "proxy:" .. key .. ":usersOnline")
end
end
key = nil
end
end
return total