Migrate from the consumer model to ExecutorService. The consumer was not flexible and was less reliable.

src/main/java/com/imaginarycode/minecraft/redisbungee/util/RedisCallable.java

@@ -0,0 +1,62 @@
+/**
+ * Copyright © 2013 tuxed <write@imaginarycode.com>
+ * This work is free. You can redistribute it and/or modify it under the
+ * terms of the Do What The Fuck You Want To Public License, Version 2,
+ * as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.
+ */
+package com.imaginarycode.minecraft.redisbungee.util;
+
+import com.imaginarycode.minecraft.redisbungee.RedisBungee;
+import lombok.AllArgsConstructor;
+import redis.clients.jedis.Jedis;
+import redis.clients.jedis.exceptions.JedisConnectionException;
+
+import java.util.concurrent.Callable;
+import java.util.logging.Level;
+
+@AllArgsConstructor
+public abstract class RedisCallable<T> implements Callable<T>, Runnable {
+    private final RedisBungee plugin;
+
+    @Override
+    public void run() {
+        run(false);
+    }
+
+    @Override
+    public T call() {
+        return run(false);
+    }
+
+    private T run(boolean retry) {
+        Jedis jedis = null;
+
+        try {
+            jedis = plugin.getPool().getResource();
+            return call(jedis);
+        } catch (JedisConnectionException e) {
+            plugin.getLogger().log(Level.SEVERE, "Unable to get connection", e);
+
+            if (jedis != null)
+                plugin.getPool().returnBrokenResource(jedis);
+
+            if (!retry) {
+                // Wait one second before retrying the task
+                try {
+                    Thread.sleep(1000);
+                } catch (InterruptedException e1) {
+                    throw new RuntimeException("task failed to run", e1);
+                }
+                run(true);
+            }
+        } finally {
+            if (jedis != null) {
+                plugin.getPool().returnResource(jedis);
+            }
+        }
+
+        throw new RuntimeException("task failed to run");
+    }
+
+    protected abstract T call(Jedis jedis);
+}