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|
# include/wait_slave_status.inc
#
# Created by Matthias Leich
#
# SUMMARY
#
# Waits until slave has reached certain state or maximum time reached.
#
# (This script will not work, when the SHOW command delivers more than one
# result record, because only the first record will be caught.)
#
# USAGE
#
# Set $result_pattern in test file and source this file:
#
# let $result_pattern= <pattern used for LIKE on the result of
# SHOW STATUS SLAVE>
# --include wait_slave_status.inc
#
# EXAMPLE
#
# The script rpl_until.test:
# ...
# --replace_result $MASTER_MYPORT MASTER_MYPORT
# --replace_column 1 # 9 # 23 # 33 #
# --vertical_results show slave status;
#
# outputs
# show slave status;
# Slave_IO_State #
# Master_Host localhost
# Master_User root
# Master_Port MASTER_MYPORT
# Connect_Retry 1
# Master_Log_File master-bin.000001
# Read_Master_Log_Pos 776
# Relay_Log_File slave-relay-bin.000004
# Relay_Log_Pos #
# Relay_Master_Log_File master-bin.000001
# Slave_IO_Running Yes
# Slave_SQL_Running No
# Replicate_Do_DB
# Replicate_Ignore_DB
# Replicate_Do_Table
# Replicate_Ignore_Table
# Replicate_Wild_Do_Table
# Replicate_Wild_Ignore_Table
# Last_Errno 0
# Last_Error
# Skip_Counter 0
# Exec_Master_Log_Pos 319
# Relay_Log_Space #
# Until_Condition Master
# Until_Log_File master-bin.000001
# Until_Log_Pos 319
# Master_SSL_Allowed No
# Master_SSL_CA_File
# Master_SSL_CA_Path
# Master_SSL_Cert
# Master_SSL_Cipher
# Master_SSL_Key
# Seconds_Behind_Master #
#
# The main problem with the "show slave status;" in rpl_until is, that
# depending on the total test engine power and the current load caused by
# other processes, the expected slave status might be not reached though
# it will happen in maybe some seconds.
#
# The typical problem with rpl_until is that Slave_IO_Running is "No"
# instead of "Yes".
#
# The expected result follows the LIKE pattern:
#
# let $result_pattern= '%localhost%root%1%master-bin.000001%776%slave-relay-bin.000004%master-bin.000001%Yes%No%0%0%319%Master%master-bin.000001%319%No%';
#
# The Slave_IO_Running value is the "Yes" just after the "master-bin.000001".
#
# How to get this pattern ?
#
# Any lines "--replace_result ..." and "--replace_colum ..." just before
# the SHOW TABLE STATUS and of course the expected result itself
# show us columns where the content must be unified, because it is non
# deterministic or it depends on the current test environment.
#
# Unfortunately "--replace_result ..." and "--replace_colum ..." do not
# affect the result of our assignment let $my_val= `SHOW SLAVE STATUS`;
# Therefore such content must be covered by '%'.
#
# Please be careful. A more simple pattern might be dangerous, because we
# might get "wrong" matches. Example: There might be several "Yes" and "No"
# within one result row.
#
###############################################################################
# We do not want to print the auxiliary commands, because they are not of
# interest and their amount will vary depending how fast we get the
# desired state.
--disable_query_log
# The protocol should show
# - the setting of $result_pattern and
# - that this file is sourced ,
# because this increases the chance to use the protocol as replay script.
eval SELECT "let \$result_pattern= $result_pattern ;" AS "";
SELECT '--source include/wait_slave_status.inc' AS "";
let $show_type= SLAVE STATUS;
let $show_pattern= $result_pattern;
--enable_query_log
--source include/wait_show_pattern.inc
if (!$success)
{
let $message= ! Attention: Timeout in wait_slave_status.inc.
| Possible reasons with decreasing probability:
| - The LIKE pattern is wrong, because the
| testcase was altered or the layout of the
| SHOW SLAVE STATUS result set changed.
| - There is a new bug within the replication.
| - We met an extreme testing environment and timeout is
| too small.;
--source include/show_msg80.inc
--echo DEBUG INFO START (wait_slave_status.inc):
--echo $result_pattern
--vertical_results
show slave status;
--echo DEBUG INFO END
}
|