TMP - fixup after review: Add 3 ids to RAFT__REQUESTS

Author: Mathieu Borderé

include/raft.h

@@ -919,18 +919,19 @@ RAFT_API raft_index raft_last_applied(struct raft *r);
 
 /**
  * Common fields across client request types.
- * `req_id` and `client_id` are currently unused. `reserved` fields should
- * be replaced by new members with same size and alignment requirements
- * as `uint64_t`.
- */
-#define RAFT__REQUEST     \
-    void *data;           \
-    int type;             \
-    raft_index index;     \
-    void *queue[2];       \
-    uint64_t client_id;   \
-    uint64_t req_id;      \
-    uint64_t reserved[4]  \
+ * `req_id`, `client_id` and `unique_id` are currently unused.
+ * `reserved` fields should be replaced by new members with the same size
+ * and alignment requirements as `uint64_t`.
+ */
+#define RAFT__REQUEST      \
+    void *data;            \
+    int type;              \
+    raft_index index;      \
+    void *queue[2];        \
+    uint8_t req_id[16];    \
+    uint8_t client_id[16]; \
+    uint8_t unique_id[16]; \
+    uint64_t reserved[4]   \
 
 /**
  * Asynchronous request to append a new command entry to the log and apply it to

src/request.h

@@ -11,7 +11,9 @@ struct request
     int type;
     raft_index index;
     void *queue[2];
-    uint64_t id;
+    uint8_t req_id[16];
+    uint8_t client_id[16];
+    uint8_t unique_id[16];
     uint64_t reserved[4];
 };