Fixed null when fetching server id. (#118)

(cherry picked from commit 219a4ab)

api/src/main/java/com/imaginarycode/minecraft/redisbungee/api/PlayerDataManager.java

@@ -28,10 +28,7 @@
 import redis.clients.jedis.UnifiedJedis;
 
 import java.net.InetAddress;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Set;
-import java.util.UUID;
+import java.util.*;
 import java.util.concurrent.TimeUnit;
 
 public abstract class PlayerDataManager<P, LE, DE, PS extends IPubSubMessageEvent, SC extends IPlayerChangedServerNetworkEvent, NJE extends IPlayerLeftNetworkEvent, CE> {
@@ -248,7 +245,9 @@ protected Multimap<String, UUID> serversToPlayersBuilder(Object o) {
  public Multimap<String, UUID> doPooledPipeline(Pipeline pipeline) {
  HashMap<UUID, Response<String>> responses = new HashMap<>();
  for (UUID uuid : uuids) {
- responses.put(uuid, pipeline.hget("redis-bungee::" + networkId + "::player::" + uuid + "::data", "server"));
+ Optional.ofNullable(pipeline.hget("redis-bungee::" + networkId + "::player::" + uuid + "::data", "server")).ifPresent(stringResponse -> {
+ responses.put(uuid, stringResponse);
+ });
  }
  pipeline.sync();
  responses.forEach((uuid, response) -> {
@@ -264,13 +263,14 @@ public Multimap<String, UUID> doPooledPipeline(Pipeline pipeline) {
  public Multimap<String, UUID> clusterPipeline(ClusterPipeline pipeline) {
  HashMap<UUID, Response<String>> responses = new HashMap<>();
  for (UUID uuid : uuids) {
- responses.put(uuid, pipeline.hget("redis-bungee::" + networkId + "::player::" + uuid + "::data", "server"));
+ Optional.ofNullable(pipeline.hget("redis-bungee::" + networkId + "::player::" + uuid + "::data", "server")).ifPresent(stringResponse -> {
+ responses.put(uuid, stringResponse);
+ });
  }
  pipeline.sync();
  responses.forEach((uuid, response) -> {
  String key = response.get();
  if (key == null) return;
-
  builder.put(key, uuid);
  });
  return builder.build();