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