From d4fa40655dfdbc9bbff9299f773812452875c6c8 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Mon, 25 Feb 2013 12:04:31 +0100
Subject: [PATCH] Cluster: new sub-command CLUSTER COUNTKEYSINSLOT.

The new sub-command uses the new countKeysInSlot() API and allows a
cluster client to get the number of keys for a given hashslot.
---
 src/cluster.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/cluster.c b/src/cluster.c
index e52af78b2..ce0bb8aa2 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -1640,6 +1640,12 @@ void clusterCommand(redisClient *c) {
         sds key = c->argv[2]->ptr;
 
         addReplyLongLong(c,keyHashSlot(key,sdslen(key)));
+    } else if (!strcasecmp(c->argv[1]->ptr,"countkeysinslot") && c->argc == 3) {
+        long long slot;
+
+        if (getLongLongFromObjectOrReply(c,c->argv[2],&slot,NULL) != REDIS_OK)
+            return;
+        addReplyLongLong(c,countKeysInSlot(slot));
     } else if (!strcasecmp(c->argv[1]->ptr,"getkeysinslot") && c->argc == 4) {
         long long maxkeys, slot;
         unsigned int numkeys, j;