DATAREDIS-315 - Add Support for redis cluster.

Added ClusterConnection and started implementing required stuff for jedis as a start. Since there’s an open PR for jedis (redis/jedis#671) we should wait for that one to be fixed since it includes major stuff that’s currently missing to it still allowes to issue invalid commands like move that cannot be run in cluster mode….

Author: christophstrobl

src/main/java/org/springframework/data/redis/connection/RedisClusterCommands.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2015 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.redis.connection;
+
+/**
+ * @author Christoph Strobl
+ */
+public interface RedisClusterCommands {
+
+	Iterable<RedisNode> getClusterNodes();
+
+}

src/main/java/org/springframework/data/redis/connection/RedisClusterConnection.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2015 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.redis.connection;
+
+import java.util.Properties;
+import java.util.Set;
+
+/**
+ * @author Christoph Strobl
+ * @since 1.5
+ */
+public interface RedisClusterConnection extends RedisConnection, RedisClusterCommands {
+
+	String ping(RedisNode node);
+
+	void bgRewriteAof(RedisNode node);
+
+	void bgSave(RedisNode node);
+
+	Long lastSave(RedisNode node);
+
+	void save(RedisNode node);
+
+	Long dbSize(RedisNode node);
+
+	void flushDb(RedisNode node);
+
+	void flushAll(RedisNode node);
+
+	Properties info(RedisNode node);
+
+	Set<byte[]> keys(byte[] pattern, RedisNode node);
+
+	byte[] randomKey(RedisNode node);
+
+	void shutdown(RedisNode node);
+
+}