Add support for CLIENT KILL USER (#2444)

Author: dengliming

src/main/java/redis/clients/jedis/params/ClientKillParams.java

@@ -6,6 +6,7 @@ public class ClientKillParams extends Params {
   private static final String TYPE = "TYPE";
   private static final String ADDR = "ADDR";
   private static final String SKIPME = "SKIPME";
+  private static final String USER = "USER";
 
   public static enum Type {
     NORMAL, MASTER, SLAVE, PUBSUB;
@@ -57,4 +58,9 @@ public ClientKillParams skipMe(SkipMe skipMe) {
     return this;
   }
 
+  public ClientKillParams user(String username) {
+    addParam(USER, username);
+    return this;
+  }
+
 }

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

@@ -182,6 +182,17 @@ public void killAddrIpPort() {
     assertDisconnected(client);
   }
 
+  @Test
+  public void killUser() {
+    Jedis client2 = new Jedis(hnp.getHost(), hnp.getPort(), 500);
+    client.aclSetUser("test_kill", "on", "+acl", ">password1");
+    client2.auth("test_kill", "password1");
+    long clients = jedis.clientKill(new ClientKillParams().user("test_kill"));
+    assertEquals(1, clients);
+    assertDisconnected(client2);
+    jedis.aclDelUser("test_kill");
+  }
+
   private void assertDisconnected(Jedis j) {
     try {
       j.ping();