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# Testing master to slave heartbeat protocol
# 
# Including:
# - user interface, grammar, checking the range and warnings about 
#   unreasonable values for the heartbeat period;
# - no rotation of relay log if heartbeat is less that slave_net_timeout
# - SHOW STATUS like 'Slave_received_heartbeats' action
# - SHOW STATUS like 'Slave_heartbeat_period' report
# - SHOW STATUS like 'Slave_last_heartbeat' check

--source include/not_group_replication_plugin.inc
--let $rpl_skip_start_slave= 1
--let $rpl_skip_reset_master_and_slave= 1
--let $rpl_skip_change_master= 1
--source include/master-slave.inc

connection slave;
set @restore_slave_net_timeout= @@global.slave_net_timeout;
set @@global.slave_net_timeout= 10;

#
# check for null value of the Slave_last_heartbeat variable when the slave is not enabled
#
--query_vertical SHOW STATUS LIKE "Slave_last_heartbeat"

###
### Checking the range
###

#
# default period slave_net_timeout/2
#
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 2 ####
eval change master to master_host='127.0.0.1',master_port=$MASTER_MYPORT, master_user='root';
--query_vertical show status like 'Slave_heartbeat_period';

#
# the max for the period is ULONG_MAX/1000; an attempt to exceed it is  denied
#
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 2 ####
--error ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE
eval change master to master_host='127.0.0.1',master_port=$MASTER_MYPORT, master_user='root', master_heartbeat_period= 4294968;
--query_vertical show status like 'Slave_heartbeat_period';

#
# the min value for the period is 1 millisecond an attempt to assign a
# lesser will be warned with treating the value as zero
#
connection slave;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 2 ####
### 5.1 mtr does not have --warning ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE
eval change master to master_host='127.0.0.1',master_port=$MASTER_MYPORT, master_user='root', master_heartbeat_period= 0.0009999;
--query_vertical show status like 'Slave_heartbeat_period';

#
# the actual max and min must be accepted
#
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 2 ####
eval change master to master_host='127.0.0.1',master_port=$MASTER_MYPORT, master_user='root', master_heartbeat_period= 4294967;
--query_vertical show status like 'Slave_heartbeat_period';

--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 2 ####
eval change master to master_host='127.0.0.1',master_port=$MASTER_MYPORT, master_user='root', master_heartbeat_period= 0.001;
--query_vertical show status like 'Slave_heartbeat_period';

reset slave;

#
# A warning if period greater than slave_net_timeout
#
set @@global.slave_net_timeout= 5;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 2 ####
eval change master to master_host='127.0.0.1',master_port=$MASTER_MYPORT, master_user='root', master_heartbeat_period= 5.001;
--query_vertical show status like 'Slave_heartbeat_period';

reset slave;

#
# A warning if slave_net_timeout is set to less than the current HB period
#
set @@global.slave_net_timeout= 5;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 2 ####
eval change master to master_host='127.0.0.1',master_port=$MASTER_MYPORT, master_user='root', master_heartbeat_period= 4;
--query_vertical show status like 'Slave_heartbeat_period';
set @@global.slave_net_timeout= 3 /* must be a warning */;

reset slave;


###
### checking no rotation
###

connection master;
--disable_warnings
drop table if exists t1;
--enable_warnings
#
# Even though master_heartbeat_period= 0.5 is 20 times less than
# @@global.slave_net_timeout= 10 in some circumstances master will
# not be able to send any heartbeat during the slave's net timeout
# and slave's relay log will rotate.
# The probability for such a scenario is pretty small so the following
# part is almost deterministic.
#

connection slave;
set @@global.slave_net_timeout= 10;
--replace_result $MASTER_MYPORT MASTER_PORT
# no error this time but rather a warning
--replace_column 2 ####
eval change master to master_host='127.0.0.1',master_port=$MASTER_MYPORT, master_user='root', master_heartbeat_period= 0.5;
--query_vertical show status like 'Slave_heartbeat_period';

start slave;

connection master;
create table t1 (f1 int);

#connection slave;
--source include/sync_slave_sql_with_master.inc
let $slave_param= Relay_Log_File;
let $slave_param_value= query_get_value(SHOW SLAVE STATUS, Relay_Log_File, 1);

# there is an explicit sleep lasting longer than slave_net_timeout
# to ensure that nothing will come to slave from master for that period.
# That would cause reconnecting and relaylog rotation w/o the fix i.e
# without a heartbeat received.

real_sleep 15;

# check (compare with the previous show's results) that no rotation happened
source include/check_slave_param.inc;

###
### SHOW STATUS like 'Slave_heartbeat_period' and 'Slave_received_heartbeats'
###

--query_vertical show status like 'Slave_heartbeat_period';

#
# proof that there has been received at least one heartbeat;
# The exact number of received heartbeat is an indeterministic value
# and therefore it's not recorded into results.
#

let $slave_wait_param_counter= 300;
let $slave_value= query_get_value("SHOW STATUS like 'Slave_received_heartbeats'", Value, 1);
# Checking the fact that at least one heartbeat is received
while (!$slave_value)
{
  dec $slave_wait_param_counter;
  if (!$slave_wait_param_counter)
  {
    --echo ERROR: failed while waiting for slave parameter $slave_param: $slave_param_value
    query_vertical show slave status;
    SHOW STATUS like 'Slave_received_heartbeats';
    exit;
  }
  sleep 0.1;
  let $slave_value= query_get_value("SHOW STATUS like 'Slave_received_heartbeats'", Value, 1);
}
--echo A heartbeat has been received by the slave

#
# check for non-null value of the Slave_last_heartbeat variable when the slave is enabled
#
--let $assert_text= Slave_last_heartbeat should not be empty
--let $assert_cond= \'[SHOW STATUS LIKE "Slave_last_heartbeat", Value, 1]\' != "" 
--source include/assert.inc  

# cleanup

connection master;
drop table t1;

#connection slave;
--source include/sync_slave_sql_with_master.inc
set @@global.slave_net_timeout= @restore_slave_net_timeout;


# ==== Bug#18185490: IF MASTER_HEARTBEAT_PERIOD OPTION IS NOT PROVIDED IT IS AUTO SETTING TO DEFAULT ====

# Change master was always resetting the heartbeat period to default value
# and received heartbeat to 0 on change master. After the bug fix,
# change master should only change heartbeat_period if the corresponding option
# is given and never change Slave_received_heartbeat.


--connection slave
--source include/stop_slave.inc

CHANGE MASTER TO MASTER_HEARTBEAT_PERIOD= 10;

--let $assert_text= Slave_heartbeat_period should be 10.000
--let $assert_cond= [SHOW STATUS LIKE "Slave_heartbeat_period", Value, 1] = 10.000
--source include/assert.inc

--echo
--echo # Verify that heartbeat period is not reset to default implicitly and
--echo # received_heartbeat is not set to 0 by this.
--echo

CHANGE MASTER TO MASTER_RETRY_COUNT= 3;

--let $assert_text= Slave_heartbeat_period should be 10.000
--let $assert_cond= [SHOW STATUS LIKE "Slave_heartbeat_period", Value, 1] = 10.000
--source include/assert.inc

--let $assert_text= Slave_received_heartbeat should NOT be set to 0
--let $assert_cond= [SHOW STATUS LIKE "Slave_received_heartbeats", Value, 1] <> 0
--source include/assert.inc


###############################################################################
# BUG#18777899 HEARTBEAT_PERIOD AUTOMATICALLY SETS TO DEFAULT POST RESET SLAVE
#              COMMAND
#
# Due to the buggy behaviour, a RESET SLAVE command on the slave server
# reset heartbeat_period to default. RESET SLAVE is generally expected to
# delete slave logs and forget the replicaiton positions. This erroneous
# behavior was therefore un-intuitive.
#
# In the test we test the behaviour of heartbeat_period with RESET SLAVE,
# STOP SLAVE, CHANGE MASTER, START SLAVE and RESET SLAVE ALL.
#
# 1. RESET SLAVE:
#    ===========
#
#    Execute a RESET SLAVE and verify that the heartbeat_period is what we
#    set in the latest CHANGE MASTER and not the the default value.
#
# 2. CHANGE MASTER, START SLAVE:
#    ==========================
#
# a. Changing host resets heartbeat_period to default.
# b. Changing port resets heartbeat_period to default.
# c. changing host and port resets heartbeat_period to default.
#
# 3. RESET SLAVE ALL:
#    ===============
#
#    Execute a RESET SLAVE ALL and verify that the heartbeat_period is set to 0.
###############################################################################

--source include/stop_slave.inc
RESET SLAVE;
--source include/start_slave.inc

--let $assert_cond= [SHOW STATUS LIKE "Slave_heartbeat_period", Value, 1] = 10.000
--let $assert_text= heartbeat period should still be 10.000 after RESET SLAVE.
--source include/assert.inc

--source include/stop_slave_io.inc
--replace_result $MASTER_MYPORT MASTER_PORT
eval CHANGE MASTER TO MASTER_HOST= 'localhost', MASTER_PORT= $MASTER_MYPORT;
--source include/start_slave.inc

--let $default_heartbeat_period= @@global.slave_net_timeout/2;
--let $assert_cond= [SHOW STATUS LIKE "Slave_heartbeat_period", Value, 1] = $default_heartbeat_period
--let $assert_text= heartbeat period should reset to default.
--source include/assert.inc

--echo #
--echo # Change from default to make sure changing HOST resets heartbeat_period
--echo # to default.
--echo #
--source include/stop_slave_io.inc
CHANGE MASTER TO MASTER_HEARTBEAT_PERIOD = 10;
--source include/start_slave.inc

--source include/stop_slave.inc
eval CHANGE MASTER TO MASTER_HOST= '127.0.0.1';
--source include/start_slave.inc

--let $assert_cond= [SHOW STATUS LIKE "Slave_heartbeat_period", Value, 1] = $default_heartbeat_period
--let $assert_text= heartbeat period should reset to default on changing host.
--source include/assert.inc

--echo #
--echo # Change from default to make sure changing PORT resets heartbeat_period
--echo # to default.
--echo #
--source include/stop_slave.inc
--replace_result $MASTER_MYPORT MASTER_PORT
CHANGE MASTER TO MASTER_HEARTBEAT_PERIOD = 10;
--source include/start_slave.inc

--source include/stop_slave.inc
--replace_result $MASTER_MYPORT MASTER_PORT
eval CHANGE MASTER TO MASTER_PORT= $MASTER_MYPORT;
--source include/start_slave.inc

--let $assert_cond= [SHOW STATUS LIKE "Slave_heartbeat_period", Value, 1] = $default_heartbeat_period
--let $assert_text= heartbeat period should reset to default on changing port.
--source include/assert.inc

--echo #
--echo # Change from default to make sure changing HOST and PORT resets
--echo # heartbeat_period to default.
--echo #
--source include/stop_slave.inc
--replace_result $MASTER_MYPORT MASTER_PORT
eval CHANGE MASTER TO MASTER_HOST= '127.0.0.1', MASTER_PORT= $MASTER_MYPORT;
--source include/start_slave.inc

--let $assert_cond= [SHOW STATUS LIKE "Slave_heartbeat_period", Value, 1] = $default_heartbeat_period
--let $assert_text= heartbeat period should reset to default on changing host and port.
--source include/assert.inc

--source include/stop_slave.inc
RESET SLAVE ALL;

--let $assert_cond= [SHOW STATUS LIKE "Slave_heartbeat_period", Value, 1] = 0.000
--let $assert_text= heartbeat period should reset to zero by RESET SLAVE ALL.
--source include/assert.inc

# Make this a slave again to successfully pass through cleanup routines.
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 2 ####
--eval change master to master_host= '127.0.0.1', master_port= $MASTER_MYPORT, master_user= 'root'

# The table might have replicated again after RESET SLAVE.
--source include/start_slave.inc
--connection master
--disable_warnings
DROP TABLE IF EXISTS t1;
--source include/sync_slave_sql_with_master.inc
--enable_warnings

--source include/rpl_end.inc