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|
# include/socket_event.inc
#
# Auxiliary routine running
# - some statement in connection con1
# or
# - connect/disconnect
# $loop_rounds times and checking if the changes to values caused by the action
# are reasonable.
#
# Requirements:
# 1. Have socket_summary_by_instance_func running
# 2a. Have a connection con1
# @con1_object_instance_begin needs to be the OBJECT_INSTANCE_BEGIN
# value of the "client_connction" entry belonging to con1 within
# socket_summary_by_instance.
# $statement needs to contain the statement to be executed by con1.
# or
# 2b. Have assigned values to the following variables
# $connect_host $connect_db $connect_user
#
let $my_errno= 0;
let $loop_round= 1;
while($loop_round <= $loop_rounds)
{
--disable_query_log
# Collect the current state
#==========================
eval $truncate;
eval $insert_before;
# Run the operation
#==================
if($is_connect)
{
let $statement= Connect (con*,$connect_host,$connect_user,,$connect_db,,);
# Some statements fail with ER_ACCESS_DENIED_ERROR
--disable_abort_on_error
--connect (con$loop_round,$connect_host,$connect_user,,$connect_db,,)
--enable_abort_on_error
let $my_errno= $mysql_errno;
if(!$my_errno)
{
# Note(mleich):
# We are aware that this additional statement is overhead.
# But it ensures that SUM_NUMBER_OF_BYTES_READ and
# SUM_NUMBER_OF_BYTES_WRITE are updated.
# And this avoids the instabilities found when running
# the connect without this additional statement.
DO 1;
}
--connection default
}
if(!$is_connect)
{
--connection con1
# Print the statement outcome once.
if($loop_round == 1)
{
--enable_query_log
--enable_result_log
--horizontal_results
}
# One of the statements to be checked is expected to fail with ER_NO_SUCH_TABLE.
--disable_abort_on_error
eval $statement;
--connection default
--enable_abort_on_error
--disable_query_log
--disable_result_log
}
# Wait till the operation is really finished. We expect that there will be no
# changes to the statistics of the additional connection after this point of time.
#=================================================================================
--connection default
# Variants:
#----------
# 1. Connect failed ($my_errno <> 0)
# no entry in performance_schema.threads -> wait_till_sleep.inc cannot be used
# short life entry in socket_summary_by_instance -> wait till it doesn't exist
# 2. Connect with success ($my_errno = 0)
# entry in performance_schema.threads -> wait_till_sleep.inc can be used
# entry in socket_summary_by_instance -> wait till it does exist
# 3. SQL command failed ($my_errno <> 0)
# entry in performance_schema.threads -> wait_till_sleep.inc can be used
if($is_connect)
{
let $part=
FROM performance_schema.socket_summary_by_instance
WHERE EVENT_NAME LIKE '%client_connection'
AND OBJECT_INSTANCE_BEGIN <> @default_object_instance_begin;
if(!$my_errno)
{
# Wait till the new connection is visible in performance_schema.threads
# and processlist_command is 'Sleep'.
--source ../include/wait_till_sleep.inc
# A successful connect causes that a new second row in
# performance_schema.socket_summary_by_instance shows up.
# Wait till this row is there.
let $wait_timeout= 10;
let $wait_condition=
SELECT COUNT(*) = 1
$part;
--source include/wait_condition.inc
if (!$success)
{
--echo # Error: We did not reach the expected state where a new
--echo # row in socket_summary_by_instance is visible
eval
SELECT *
$part;
--echo # abort
exit;
}
}
if($my_errno)
{
# Experiments with high parallel load showed that there is a very
# period of time where a "client_connection" entry for a failing
# Connect is visible.
# We hope that sleep 1 is long enough so that PERFORMANCE_SCHEMA
# can remove this row before we collect the after action state.
let $wait_timeout= 5;
let $wait_condition=
SELECT COUNT(*) = 0
$part;
--source include/wait_condition.inc
if(!$success)
{
--echo # Error: We did not reach the expected state.
--echo # A failing connect causes a "client_connection" entry
--echo # within socket_summary_by_instance having an extreme
--echo # short lifetime.
--echo # This entry must have now disappeared.
eval
SELECT *
$part;
--echo # abort
exit;
}
}
# --sleep 3
}
if(!$is_connect)
{
--source ../include/wait_till_sleep.inc
}
# Various checks
#===============
# 1. Check statistics in general
#-------------------------------
# ../include/socket_summary_check.inc also inserts the 'After' state into
# mysqltest.my_socket_summary_by_instance.
--source ../include/socket_summary_check.inc
--disable_query_log
--disable_result_log
if($is_connect)
{
eval $get_object_instance_begin;
eval $insert_pseudo_before;
}
eval $insert_delta;
# Correct the values of the columns statement and run
eval
UPDATE mysqltest.socket_summary_by_instance_detail
SET statement = '$statement'
WHERE statement IS NULL;
eval
UPDATE mysqltest.socket_summary_by_instance_detail
SET run = $loop_round
WHERE run IS NULL;
if($is_connect)
{
# Only in case the connect was successful ($my_errno = 0) than we have to disconnect.
if(!$my_errno)
{
--disconnect con$loop_round
# Wait till the connection using the DB = 'mysqltest' or
# 'mysqlsupertest' has disappeared from performance_schema.threads
let $part=
FROM performance_schema.threads
WHERE processlist_db IN ('mysqltest','mysqlsupertest');
let $wait_timeout= 10;
let $wait_condition=
SELECT COUNT(*) = 0
$part;
--source include/wait_condition.inc
if (!$success)
{
--echo # Error: The disconnect of the connection with processlist_db
--echo # IN ('mysqltest','mysqlsupertest') failed
SELECT *
$part;
--echo # abort
exit;
}
# Wait in addition till the corresponding 'client_connection' entry of
# the connection using the DB = 'mysqltest' or 'mysqlsupertest' has disappeared.
let $part=
FROM performance_schema.socket_summary_by_instance
WHERE EVENT_NAME LIKE '%client_connection'
AND OBJECT_INSTANCE_BEGIN <> @default_object_instance_begin;
let $wait_timeout= 10;
let $wait_condition=
SELECT COUNT(*) = 0
$part;
--source include/wait_condition.inc
if (!$success)
{
--echo # Error: The entry of the disconnectd connection with processlist_db
--echo # IN ('mysqltest','mysqlsupertest') did not disappear
SELECT *
$part;
--echo # abort
exit;
}
}
# --sleep 3
}
inc $loop_round;
}
--enable_query_log
--enable_result_log
|
