Adding upstream version 1:10.11.6.upstream/1%10.11.6

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 70 insertions, 0 deletions

diff --git a/mysql-test/include/get_relay_log_pos.inc b/mysql-test/include/get_relay_log_pos.inc
new file mode 100644
index 00000000..47a74c9b
--- /dev/null
+++ b/mysql-test/include/get_relay_log_pos.inc
@@ -0,0 +1,70 @@
+# For a given event which is at position $master_log_pos in the the master's
+# binary log, returns its position in the slave's relay log file
+# $relay_log_file.  
+# The position is stored in the variable $relay_log_pos.
+
+# Usage:
+#   let $relay_log_file= 'relay-log-bin.000001'; 
+#   let $master_log_pos= 106; 
+#   source include/get_relay_log_pos.inc; 
+#   # at this point, get_relay_log_pos.inc sets $relay_log_pos. echo position
+#   # in $relay_log_file: $relay_log_pos. 
+
+if (!$relay_log_file)
+{
+  --die 'variable $relay_log_file is null'
+}
+
+if (!$master_log_pos)
+{
+  --die 'variable $master_log_pos is null'
+}
+
+let $MYSQLD_DATADIR= `select @@datadir`;
+let $_suffix= `SELECT UUID()`;
+let $_tmp_file= $MYSQLTEST_VARDIR/tmp/mysqlbinlog.$_suffix;
+--exec $MYSQL_BINLOG $MYSQLD_DATADIR/$relay_log_file > $_tmp_file
+
+# All queries in this file should not be logged.
+--disable_query_log
+
+--disable_warnings
+DROP TEMPORARY TABLE IF EXISTS mysqlbinlog_events;
+DROP TEMPORARY TABLE IF EXISTS events_at;
+DROP TEMPORARY TABLE IF EXISTS events_pos;
+CREATE TEMPORARY TABLE mysqlbinlog_events(c1 INT AUTO_INCREMENT KEY, c2 varchar(256));
+
+# Event position is in the comments output by mysqlbinlog, we load this
+# comments into the table 
+# '# at 106' 
+# '# ....  end_log_pos 46'
+eval LOAD DATA LOCAL INFILE '$_tmp_file' INTO TABLE mysqlbinlog_events
+  LINES STARTING BY '#' (c2) SET c1 = NULL;
+
+# Event pos in relay log file is inserted into table events_at
+CREATE TEMPORARY TABLE events_at(c1 INT AUTO_INCREMENT KEY, c2 varchar(256))
+  SELECT c2 FROM mysqlbinlog_events WHERE c2 LIKE ' at%' ORDER BY c1;
+
+# Event pos in master log file is inserted into table events_pos
+CREATE TEMPORARY TABLE events_pos(c1 INT AUTO_INCREMENT KEY, c2 varchar(256))
+  SELECT c2 FROM mysqlbinlog_events WHERE c2 LIKE '% end_log_pos %' ORDER BY c1;
+--enable_warnings
+
+#  events_at                                events_pos
+#  c1------c2--------------------------     c1------c2------------------------
+#  1       ev1's begin pos in relay log     1      ev1's end pos in master log
+#  2       ev2's begin pos in relay log     2      ev2's end pos in master log
+#  3       ev3's begin pos in relay log     3      ev3's end pos in master log
+#  events always keep the same sequence.  
+#  Because event[N]'s end pos is equal to event[N+1]'s begin pos we want to
+#  find event's end pos in relay log, we can find the right relay_log_pos
+#  using the relationship that 'events_pos.c1 = events_at.c1 + 1'
+# 
+# There is a fault that we can't get the relay log position of the last event,
+# as it is not output by mysqlbinlog
+let $relay_log_pos= `SELECT SUBSTRING(a.c2, 5)
+  FROM events_at a, events_pos b
+  WHERE a.c1=b.c1+1 and b.c2 LIKE '% $master_log_pos%'`;
+DROP TEMPORARY TABLE mysqlbinlog_events, events_at, events_pos;
+--remove_file $_tmp_file
+--enable_query_log