allow init to work non intercepted before redis raft is up

Author: sjpotter

src/commands.c

@@ -74,7 +74,7 @@ static const CommandSpec commands[] = {
     {"auth",                        CMD_SPEC_DONT_INTERCEPT                      },
  /* queued by multi, need to intercept
     {"ping",                        CMD_SPEC_DONT_INTERCEPT                      }, */
-    {"ping",                        CMD_SPEC_READONLY                            },
+    {"ping",                        CMD_SPEC_READONLY | CMD_SPEC_ALLOW_PREINIT   },
     {"hello",                       CMD_SPEC_DONT_INTERCEPT                      },
     {"module",                      CMD_SPEC_DONT_INTERCEPT                      },
     {"config",                      CMD_SPEC_DONT_INTERCEPT                      },

src/redisraft.c

@@ -1730,6 +1730,10 @@ static void interceptRedisCommands(RedisModuleCommandFilterCtx *filter)
     if (flags != -1 && (flags & CMD_SPEC_DONT_INTERCEPT))
         return;
 
+    if (rr->state != REDIS_RAFT_UP && flags != -1 && (flags & CMD_SPEC_ALLOW_PREINIT)) {
+        return;
+    }
+
     size_t len;
     const char *str = RedisModule_StringPtrLen(cmd, &len);
 

src/redisraft.h

@@ -686,6 +686,7 @@ typedef struct {
 #define CMD_SPEC_BLOCKING       (1 << 8)  /* Blocking command */
 #define CMD_SPEC_MULTI          (1 << 9)  /* a MULTI */
 #define CMD_SPEC_SUBCOMMAND     (1 << 10) /* a command with subcommand specs */
+#define CMD_SPEC_ALLOW_PREINIT  (1 <<11)  /* if redisraft hasn't been initialized yet, allow non intercepted */
 
 /* Command filtering re-entrancy counter handling.
  *