fix #5024 - commandstats for multi-exec were logged as EXEC.

this was broken a while back by ba9154d7e7bf959b002533384319a1e90545447b
the purpose of which was to fix commandstats for GEOADD

src/server.c

@@ -2408,6 +2408,7 @@ void preventCommandReplication(client *c) {
 void call(client *c, int flags) {
     long long dirty, start, duration;
     int client_old_flags = c->flags;
+    struct redisCommand *real_cmd = c->cmd;
 
     /* Sent the command to clients in MONITOR mode, only if the commands are
      * not generated from reading an AOF. */
@@ -2456,8 +2457,11 @@ void call(client *c, int flags) {
         slowlogPushEntryIfNeeded(c,c->argv,c->argc,duration);
     }
     if (flags & CMD_CALL_STATS) {
-        c->lastcmd->microseconds += duration;
-        c->lastcmd->calls++;
+        /* use the real command that was executed (cmd and lastamc) may be
+         * different, in case of MULTI-EXEC or re-written commands such as
+         * EXPIRE, GEOADD, etc. */
+        real_cmd->microseconds += duration;
+        real_cmd->calls++;
     }
 
     /* Propagate the command into the AOF and replication link */

tests/unit/introspection-2.tcl

@@ -1,3 +1,9 @@
+proc cmdstat {cmd} {
+    if {[regexp "\r\ncmdstat_$cmd:(.*?)\r\n" [r info commandstats] _ value]} {
+        set _ $value
+    }
+}
+
 start_server {tags {"introspection"}} {
     test {TTL and TYPYE do not alter the last access time of a key} {
         r set foo bar
@@ -20,4 +26,55 @@ start_server {tags {"introspection"}} {
         r set key2 2
         r touch key0 key1 key2 key3
     } 2
+
+    test {command stats for GEOADD} {
+        r config resetstat
+        r GEOADD foo 0 0 bar
+        assert_match {*calls=1,*} [cmdstat geoadd]
+        assert_match {} [cmdstat zadd]
+    }
+
+    test {command stats for EXPIRE} {
+        r config resetstat
+        r SET foo bar
+        r EXPIRE foo 0
+        assert_match {*calls=1,*} [cmdstat expire]
+        assert_match {} [cmdstat del]
+    }
+
+    test {command stats for BRPOP} {
+        r config resetstat
+        r LPUSH list foo
+        r BRPOP list 0
+        assert_match {*calls=1,*} [cmdstat brpop]
+        assert_match {} [cmdstat rpop]
+    }
+
+    test {command stats for MULTI} {
+        r config resetstat
+        r MULTI
+        r set foo bar
+        r GEOADD foo2 0 0 bar
+        r EXPIRE foo2 0
+        r EXEC
+        assert_match {*calls=1,*} [cmdstat multi]
+        assert_match {*calls=1,*} [cmdstat exec]
+        assert_match {*calls=1,*} [cmdstat set]
+        assert_match {*calls=1,*} [cmdstat expire]
+        assert_match {*calls=1,*} [cmdstat geoadd]
+    }
+
+    test {command stats for scripts} {
+        r config resetstat
+        r set mykey myval
+        r eval {
+            redis.call('set', KEYS[1], 0)
+            redis.call('expire', KEYS[1], 0)
+            redis.call('geoadd', KEYS[1], 0, 0, "bar")
+        } 1 mykey
+        assert_match {*calls=1,*} [cmdstat eval]
+        assert_match {*calls=2,*} [cmdstat set]
+        assert_match {*calls=1,*} [cmdstat expire]
+        assert_match {*calls=1,*} [cmdstat geoadd]
+    }
 }