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# Original Author: JBM                                                      #
# Original Date: Aug/18/2005                                                #
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# TEST: To test the LOAD_FILE() in rbr                                      #
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# Change Author: JBM
# Change Date: 2006-01-16
# Change: Added Order by for NDB
##########

# Includes
-- source include/master-slave.inc
-- source include/have_binlog_format_mixed_or_row.inc

-- source extra/rpl_tests/rpl_loadfile.test

#  BUG#39701: Mixed binlog format does not switch to row mode on LOAD_FILE
#
#  DESCRIPTION
#
#    Problem: when using load_file string function and mixed binlogging format
#             there was no switch to row based binlogging format. This leads
#             to scenarios on which the slave replicates the statement and it
#             will try to load the file from local file system, which in most
#             likely it will not exist.
#
#    Solution:
#             Marking this function as unsafe for statement format, makes the
#             statement using it to be logged in row based format. As such, data 
#             replicated from the master, becomes the content of the loaded file.
#             Consequently, the slave receives the necessary data to complete
#             the load_file instruction correctly.
#
#  IMPLEMENTATION
#
#    The test is implemented as follows:
#
#      On Master,
#       i) write to file the desired content.
#      ii) create table and stored procedure with load_file
#     iii) stop slave
#     iii) execute load_file 
#      iv) remove file
#
#      On Slave,
#       v) start slave
#      vi) sync it with master so that it gets the updates from binlog (which 
#          should have bin logged in row format). 
#
#          If the the binlog format does not change to row, then the assertion
#          done in the following step fails. This happens because tables differ 
#          since the file does not exist anymore, meaning that when slave 
#          attempts to execute LOAD_FILE statement it inserts NULL on table 
#          instead of the same contents that the master loaded when it executed 
#          the procedure (which was executed when file existed).
#
#     vii) assert that the contents of master and slave 
#          table are the same

connection master;
source include/reset_master_and_slave.inc;

connection master;
let $file= $MYSQLTEST_VARDIR/tmp/bug_39701.data;

--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
--eval SELECT repeat('x',20) INTO OUTFILE '$file'

disable_warnings;
DROP TABLE IF EXISTS t1;
enable_warnings;

CREATE TABLE t1 (t text);
DELIMITER |;
CREATE PROCEDURE p(file varchar(4096)) 
  BEGIN
    INSERT INTO t1 VALUES (LOAD_FILE(file));
  END|
DELIMITER ;|

# stop slave before issuing the load_file on master
connection slave;
source include/stop_slave.inc;

connection master;

# test: check that logging falls back to rbr.
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
--eval CALL p('$file')

# test: remove the file from the filesystem and assert that slave still 
#       gets the loaded file
remove_file $file;

# now that the file is removed it is safe (regarding what we want to test) 
# to start slave
connection slave;
source include/start_slave.inc;

connection master;
sync_slave_with_master;

# assertion: assert that the slave got the updates even
#            if the file was removed before the slave started,
#            meaning that contents were indeed transfered
#            through binlog (in row format)
let $diff_table_1=master:test.t1;
let $diff_table_2=slave:test.t1;
source include/diff_tables.inc;

# CLEAN UP
DROP TABLE t1;
DROP PROCEDURE p;
sync_slave_with_master;
