ROLE command

src/main/java/redis/clients/jedis/BinaryClient.java

@@ -1084,6 +1084,10 @@ public void slaveofNoOne() {
     sendCommand(SLAVEOF, NO.getRaw(), ONE.getRaw());
   }
 
+  public void role() {
+    sendCommand(ROLE);
+  }
+
   public void configGet(final byte[] pattern) {
     sendCommand(CONFIG, Keyword.GET.getRaw(), pattern);
   }

src/main/java/redis/clients/jedis/BinaryJedis.java

@@ -3561,6 +3561,13 @@ public String slaveofNoOne() {
     return client.getStatusCodeReply();
   }
 
+  @Override
+  public List<Object> roleBinary() {
+    checkIsInMultiOrPipeline();
+    client.role();
+    return BuilderFactory.RAW_OBJECT_LIST.build(client.getOne());
+  }
+
   /**
    * Retrieve the configuration of a running Redis server. Not all the configuration parameters are
    * supported.

src/main/java/redis/clients/jedis/BuilderFactory.java

@@ -68,6 +68,18 @@ public String toString() {
     }
   };
 
+  public static final Builder<List<Object>> ENCODED_OBJECT_LIST = new Builder<List<Object>>() {
+    @Override
+    public List<Object> build(Object data) {
+      return (List<Object>) SafeEncoder.encodeObject(data);
+    }
+
+    @Override
+    public String toString() {
+      return "List<Object>";
+    }
+  };
+
   public static final Builder<Long> LONG = new Builder<Long>() {
     @Override
     public Long build(Object data) {

src/main/java/redis/clients/jedis/Jedis.java

@@ -3145,6 +3145,13 @@ public long bitpos(final String key, final boolean value, final BitPosParams par
     return client.getIntegerReply();
   }
 
+  @Override
+  public List<Object> role() {
+    checkIsInMultiOrPipeline();
+    client.role();
+    return BuilderFactory.ENCODED_OBJECT_LIST.build(client.getOne());
+  }
+
   /**
    * Retrieve the configuration of a running Redis server. Not all the configuration parameters are
    * supported.

src/main/java/redis/clients/jedis/Protocol.java

@@ -268,7 +268,7 @@ public static enum Command implements ProtocolCommand {
     READONLY, READWRITE, GEOADD, GEODIST, GEOHASH, GEOPOS, GEORADIUS, GEORADIUS_RO, GEORADIUSBYMEMBER,
     GEORADIUSBYMEMBER_RO, MODULE, BITFIELD, HSTRLEN, TOUCH, SWAPDB, MEMORY, XADD, XLEN, XDEL,
     XTRIM, XRANGE, XREVRANGE, XREAD, XACK, XGROUP, XREADGROUP, XPENDING, XCLAIM, XAUTOCLAIM, ACL, XINFO,
-    BITFIELD_RO, LPOS, SMISMEMBER, ZMSCORE, BZPOPMIN, BZPOPMAX, BLMOVE, LMOVE, COPY;
+    BITFIELD_RO, LPOS, SMISMEMBER, ZMSCORE, BZPOPMIN, BZPOPMAX, BLMOVE, LMOVE, COPY, ROLE;
 
     private final byte[] raw;
 

src/main/java/redis/clients/jedis/commands/AdvancedBinaryJedisCommands.java

@@ -11,6 +11,8 @@
 
 public interface AdvancedBinaryJedisCommands {
 
+  List<Object> roleBinary();
+
   long move(byte[] key, int dbIndex);
 
   List<byte[]> configGet(byte[] pattern);

src/main/java/redis/clients/jedis/commands/AdvancedJedisCommands.java

@@ -13,6 +13,8 @@
 
 public interface AdvancedJedisCommands {
 
+  List<Object> role();
+
   long move(String key, int dbIndex);
 
   List<String> configGet(String pattern);

src/test/java/redis/clients/jedis/tests/commands/ControlCommandsTest.java

@@ -17,11 +17,14 @@
 import org.junit.Test;
 
 import redis.clients.jedis.DebugParams;
+import redis.clients.jedis.DefaultJedisClientConfig;
 import redis.clients.jedis.Jedis;
 import redis.clients.jedis.JedisMonitor;
 import redis.clients.jedis.Protocol;
 import redis.clients.jedis.args.ClientPauseMode;
 import redis.clients.jedis.exceptions.JedisDataException;
+import redis.clients.jedis.tests.HostAndPortUtil;
+import redis.clients.jedis.tests.utils.AssertUtil;
 import redis.clients.jedis.util.SafeEncoder;
 
 public class ControlCommandsTest extends JedisCommandTestBase {
@@ -88,6 +91,61 @@ public void readwrite() {
     }
   }
 
+  @Test
+  public void roleMaster() {
+    try (Jedis master = new Jedis(HostAndPortUtil.getRedisServers().get(0),
+        DefaultJedisClientConfig.builder().password("foobared").build())) {
+
+      List<Object> role = master.role();
+      assertEquals("master", role.get(0));
+      assertTrue(role.get(1) instanceof Long);
+      assertTrue(role.get(2) instanceof List);
+
+      // binary
+      List<Object> brole = master.roleBinary();
+      assertArrayEquals("master".getBytes(), (byte[]) brole.get(0));
+      assertTrue(brole.get(1) instanceof Long);
+      assertTrue(brole.get(2) instanceof List);
+    }
+  }
+
+  @Test
+  public void roleSlave() {
+    try (Jedis slave = new Jedis(HostAndPortUtil.getRedisServers().get(4),
+        DefaultJedisClientConfig.builder().password("foobared").build())) {
+
+      List<Object> role = slave.role();
+      assertEquals("slave", role.get(0));
+      assertEquals((long) HostAndPortUtil.getRedisServers().get(0).getPort(), role.get(2));
+      assertEquals("connected", role.get(3));
+      assertTrue(role.get(4) instanceof Long);
+
+      // binary
+      List<Object> brole = slave.roleBinary();
+      assertArrayEquals("slave".getBytes(), (byte[]) brole.get(0));
+      assertEquals((long) HostAndPortUtil.getRedisServers().get(0).getPort(), brole.get(2));
+      assertArrayEquals("connected".getBytes(), (byte[]) brole.get(3));
+      assertTrue(brole.get(4) instanceof Long);
+    }
+  }
+
+  @Test
+  public void roleSentinel() {
+    try (Jedis sentinel = new Jedis(HostAndPortUtil.getSentinelServers().get(0))) {
+
+      List<Object> role = sentinel.role();
+      assertEquals("sentinel", role.get(0));
+      assertTrue(role.get(1) instanceof List);
+      assertTrue(((List) role.get(1)).contains("mymaster"));
+
+      // binary
+      List<Object> brole = sentinel.roleBinary();
+      assertArrayEquals("sentinel".getBytes(), (byte[]) brole.get(0));
+      assertTrue(brole.get(1) instanceof List);
+      AssertUtil.assertCollectionContains((List) brole.get(1), "mymaster".getBytes());
+    }
+  }
+
   @Test
   public void monitor() {
     new Thread(new Runnable() {