MDEV-15505 Fixes to compilation without -DWITH_WSREP:BOOL=ON

Removed including wsrep_api.h from service_wsrep.h. This caused
various kinds of collisions with definitions when wsrep is
not supposed to be built in. Defined functions wsrep_xid_seqno()
and wsrep_xid_uuid() in wsrep_dummy.cc. Replaced wsrep_seqno_t
with long long where wsrep_api.h is not included.

Removed wsrep_xid_seqno() macro from wsrep_mysqld.h and made
wsrep code using wsrep_xid_seqno() in handler.cc to be compiled
in only if WITH_WSREP is ON.

Included wsrep_api.h for mariabackup if WITH_WSREP is ON.

cmake/wsrep.cmake

@@ -40,5 +40,4 @@ SET(WSREP_PROC_INFO ${WITH_WSREP})
 
 IF(WITH_WSREP)
   SET(WSREP_PATCH_VERSION "wsrep_${WSREP_VERSION}")
-  INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/wsrep)
 ENDIF()

extra/mariabackup/CMakeLists.txt

@@ -40,6 +40,10 @@ IF(NOT HAVE_SYSTEM_REGEX)
   INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/pcre)
 ENDIF()
 
+IF(WITH_WSREP)
+  INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/wsrep)
+ENDIF()
+
 ADD_DEFINITIONS(-UMYSQL_SERVER)
 ########################################################################
 # xtrabackup binary

extra/mariabackup/wsrep.cc

@@ -49,6 +49,8 @@ permission notice:
 #include "common.h"
 #ifdef WITH_WSREP
 
+#include <wsrep_api.h>
+
 /*! Name of file where Galera info is stored on recovery */
 #define XB_GALERA_INFO_FILENAME "xtrabackup_galera_info"
 
@@ -62,7 +64,7 @@ xb_write_galera_info(bool incremental_prepare)
 	FILE*		fp;
 	XID		xid;
 	char		uuid_str[40];
-	wsrep_seqno_t	seqno;
+	long long	seqno;
 	MY_STAT		statinfo;
 
 	/* Do not overwrite existing an existing file to be compatible with

include/mysql/service_wsrep.h

@@ -22,8 +22,6 @@
   For engines that want to support galera.
 */
 
-#include <wsrep_api.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -69,7 +67,9 @@ enum wsrep_trx_status {
 };
 
 struct xid_t;
+struct wsrep;
 struct wsrep_ws_handle;
+struct wsrep_buf;
 
 extern struct wsrep_service_st {
   struct wsrep *              (*get_wsrep_func)();
@@ -84,7 +84,7 @@ extern struct wsrep_service_st {
   void                        (*wsrep_aborting_thd_enqueue_func)(THD *thd);
   bool                        (*wsrep_consistency_check_func)(THD *thd);
   int                         (*wsrep_is_wsrep_xid_func)(const struct xid_t *xid);
-  wsrep_seqno_t               (*wsrep_xid_seqno_func)(const struct xid_t *xid);
+  long long                   (*wsrep_xid_seqno_func)(const struct xid_t *xid);
   const unsigned char*        (*wsrep_xid_uuid_func)(const struct xid_t *xid);
   void                        (*wsrep_lock_rollback_func)();
   int                         (*wsrep_on_func)(MYSQL_THD);
@@ -186,7 +186,7 @@ enum wsrep_exec_mode wsrep_thd_exec_mode(THD *thd);
 enum wsrep_query_state wsrep_thd_query_state(THD *thd);
 enum wsrep_trx_status wsrep_run_wsrep_commit(THD *thd, bool all);
 int wsrep_is_wsrep_xid(const struct xid_t* xid);
-wsrep_seqno_t wsrep_xid_seqno(const struct xid_t* xid);
+long long wsrep_xid_seqno(const struct xid_t* xid);
 const unsigned char* wsrep_xid_uuid(const struct xid_t* xid);
 int wsrep_on(MYSQL_THD thd);
 int wsrep_thd_retry_counter(THD *thd);

sql/handler.cc

@@ -1484,11 +1484,13 @@ int ha_commit_trans(THD *thd, bool all)
   DEBUG_SYNC(thd, "ha_commit_trans_after_prepare");
   DBUG_EXECUTE_IF("crash_commit_after_prepare", DBUG_SUICIDE(););
 
+#ifdef WITH_WSREP
   if (!error && WSREP_ON && wsrep_is_wsrep_xid(&thd->transaction.xid_state.xid))
   {
     // xid was rewritten by wsrep
     xid= wsrep_xid_seqno(thd->transaction.xid_state.xid);
   }
+#endif /* WITH_WSREP */
 
   if (!is_real_trans)
   {
@@ -1914,9 +1916,10 @@ static my_bool xarecover_handlerton(THD *unused, plugin_ref plugin,
                             got, hton_name(hton)->str);
       for (int i=0; i < got; i ++)
       {
-        my_xid x= WSREP_ON && wsrep_is_wsrep_xid(&info->list[i]) ?
-                  wsrep_xid_seqno(info->list[i]) :
-                  info->list[i].get_my_xid();
+        my_xid x= IF_WSREP(WSREP_ON && wsrep_is_wsrep_xid(&info->list[i]) ?
+                           wsrep_xid_seqno(info->list[i]) :
+                           info->list[i].get_my_xid(),
+                           info->list[i].get_my_xid());
         if (!x) // not "mine" - that is generated by external TM
         {
 #ifndef DBUG_OFF

sql/wsrep_dummy.cc

@@ -29,6 +29,15 @@ enum wsrep_conflict_state wsrep_thd_conflict_state(THD *, my_bool)
 int wsrep_is_wsrep_xid(const XID*)
 { return 0; }
 
+long long wsrep_xid_seqno(const XID* x)
+{ return -1; }
+
+const unsigned char* wsrep_xid_uuid(const XID*)
+{
+    static const unsigned char uuid[16] = {0};
+    return uuid;
+}
+
 bool wsrep_prepare_key(const uchar*, size_t, const uchar*, size_t, struct wsrep_buf*, size_t*)
 { return 0; }
 

sql/wsrep_mysqld.h

@@ -328,7 +328,6 @@ bool wsrep_node_is_synced();
 #define WSREP_FORMAT(my_format) ((ulong)my_format)
 #define WSREP_PROVIDER_EXISTS (0)
 #define wsrep_emulate_bin_log (0)
-#define wsrep_xid_seqno(X) (0)
 #define wsrep_to_isolation (0)
 #define wsrep_init() (1)
 #define wsrep_prepend_PATH(X)

sql/wsrep_xid.cc

@@ -91,7 +91,7 @@ wsrep_seqno_t wsrep_xid_seqno(const XID& xid)
   return ret;
 }
 
-wsrep_seqno_t wsrep_xid_seqno(const xid_t* xid)
+long long wsrep_xid_seqno(const xid_t* xid)
 {
   DBUG_ASSERT(xid);
   return wsrep_xid_seqno(*xid);

storage/innobase/trx/trx0rseg.cc

@@ -39,7 +39,7 @@ Created 3/26/1996 Heikki Tuuri
 
 #ifdef UNIV_DEBUG
 /** The latest known WSREP XID sequence number */
-static wsrep_seqno_t wsrep_seqno = -1;
+static long long wsrep_seqno = -1;
 #endif /* UNIV_DEBUG */
 /** The latest known WSREP XID UUID */
 static unsigned char wsrep_uuid[16];
@@ -58,7 +58,7 @@ trx_rseg_update_wsrep_checkpoint(
 
 #ifdef UNIV_DEBUG
 	/* Check that seqno is monotonically increasing */
-	wsrep_seqno_t xid_seqno = wsrep_xid_seqno(xid);
+	long long xid_seqno = wsrep_xid_seqno(xid);
 	const byte* xid_uuid = wsrep_xid_uuid(xid);
 
 	if (!memcmp(xid_uuid, wsrep_uuid, sizeof wsrep_uuid)) {
@@ -227,7 +227,7 @@ bool trx_rseg_read_wsrep_checkpoint(XID& xid)
 		}
 
 		XID tmp_xid;
-		wsrep_seqno_t tmp_seqno = 0;
+		long long tmp_seqno = 0;
 		if (trx_rseg_read_wsrep_checkpoint(rseg_header, tmp_xid)
 		    && (tmp_seqno = wsrep_xid_seqno(&tmp_xid))
 		    > max_xid_seqno) {