MDEV-26: Global transaction ID.

Implement START SLAVE UNTIL master_gtid_pos = "<GTID position>".

Add test cases, including a test showing how to use this to promote
a new master among a set of slaves.

1 files changed, 7 insertions, 1 deletions

diff --git a/sql/rpl_rli.h b/sql/rpl_rli.h
index 7aff6720aac..6dd757343fd 100644
--- a/sql/rpl_rli.h
+++ b/sql/rpl_rli.h
@@ -263,7 +263,9 @@ public:
      thread is running).
    */
   
-  enum {UNTIL_NONE= 0, UNTIL_MASTER_POS, UNTIL_RELAY_POS} until_condition;
+  enum {
+    UNTIL_NONE= 0, UNTIL_MASTER_POS, UNTIL_RELAY_POS, UNTIL_GTID
+  } until_condition;
   char until_log_name[FN_REFLEN];
   ulonglong until_log_pos;
   /* extension extracted from log_name and converted to int */
@@ -277,6 +279,8 @@ public:
     UNTIL_LOG_NAMES_CMP_UNKNOWN= -2, UNTIL_LOG_NAMES_CMP_LESS= -1,
     UNTIL_LOG_NAMES_CMP_EQUAL= 0, UNTIL_LOG_NAMES_CMP_GREATER= 1
   } until_log_names_cmp_result;
+  /* Condition for UNTIL master_gtid_pos. */
+  slave_connection_state until_gtid_pos;
 
   char cached_charset[6];
   /*
@@ -354,6 +358,8 @@ public:
   bool is_until_satisfied(THD *thd, Log_event *ev);
   inline ulonglong until_pos()
   {
+    DBUG_ASSERT(until_condition == UNTIL_MASTER_POS ||
+                until_condition == UNTIL_RELAY_POS);
     return ((until_condition == UNTIL_MASTER_POS) ? group_master_log_pos :
 	    group_relay_log_pos);
   }