Modules Cluster API: node information struct and flags.

src/module.c

@@ -3825,6 +3825,13 @@ typedef struct moduleClusterReceiver {
     struct moduleClusterReceiver *next;
 } moduleClusterReceiver;
 
+typedef struct moduleClusterNodeInfo {
+    int flags;
+    char ip[NET_IP_STR_LEN];
+    int port;
+    char master_id[40]; /* Only if flags & REDISMODULE_NODE_MASTER is true. */
+} mdouleClusterNodeInfo;
+
 /* We have an array of message types: each bucket is a linked list of
  * configured receivers. */
 static moduleClusterReceiver *clusterReceivers[UINT8_MAX];

src/redismodule.h

@@ -106,6 +106,12 @@
 
 /* Cluster API defines. */
 #define REDISMODULE_NODE_ID_LEN 40
+#define REDISMODULE_NODE_MYSELF     (1<<0)
+#define REDISMODULE_NODE_MASTER     (1<<1)
+#define REDISMODULE_NODE_SLAVE      (1<<2)
+#define REDISMODULE_NODE_PFAIL      (1<<3)
+#define REDISMODULE_NODE_FAIL       (1<<4)
+#define REDISMODULE_NODE_NOFAILOVER (1<<5)
 
 #define REDISMODULE_NOT_USED(V) ((void) V)