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88 lines
2.7 KiB
PHP
88 lines
2.7 KiB
PHP
# ==== Purpose ====
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#
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# Waits until a variable from SHOW STATUS has returned a specified
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# value, or until a timeout is reached.
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#
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# ==== Usage ====
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#
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# let $status_var= Threads_connected;
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# let $status_var_value= 1;
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# --source include/wait_for_status_var.inc
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#
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# Parameters:
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#
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# $status_var, $status_var_value
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# This macro will wait until the variable of SHOW STATUS
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# named $status_var gets the value $status_var_value. See
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# the example above.
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#
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# $status_type= GLOBAL|SESSION
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# To specify the type (attribute) of status variable and
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# run either SHOW GLOBAL STATUS or SHOW SESSION STATUS.
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#
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# $status_var_comparsion
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# By default, this file waits until $status_var becomes equal to
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# $status_var_value. If you want to wait until $status_var
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# becomes *unequal* to $status_var_value, set this parameter to the
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# string '!=', like this:
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# let $status_var_comparsion= !=;
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#
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# $status_timeout
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# The default timeout is 1 minute. You can change the timeout by
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# setting $status_timeout. The unit is tenths of seconds.
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#
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if (`SELECT STRCMP('$status_type', '') * STRCMP(UPPER('$status_type'), 'SESSION') * STRCMP(UPPER('$status_type'), 'GLOBAL')`)
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{
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--echo **** ERROR: Unknown type of variable status_type: allowed values are: SESSION or GLOBAL ****
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die;
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}
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let $_status_timeout_counter= $status_timeout;
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if (!$_status_timeout_counter)
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{
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let $_status_timeout_counter= 600;
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}
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let $_status_var_comparsion= $status_var_comparsion;
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if (!$_status_var_comparsion)
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{
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let $_status_var_comparsion= =;
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}
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# Get type of variable
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let $_is_number= 0;
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if (`SELECT '$status_var_value' REGEXP '^[\+\-]*[0-9]+(\.[0-9]+)*\$'`)
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{
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let $_is_number= 1;
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}
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let $_show_status_value= query_get_value("SHOW $status_type STATUS LIKE '$status_var'", Value, 1);
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# Set way of comparing
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let $_query= SELECT NOT('$_show_status_value' $_status_var_comparsion '$status_var_value');
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if ($_is_number)
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{
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let $_query= SELECT NOT($_show_status_value $_status_var_comparsion $status_var_value);
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}
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while (`$_query`)
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{
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if (!$_status_timeout_counter)
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{
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--echo **** ERROR: failed while waiting for '$status_type' '$status_var' $_status_var_comparsion '$status_var_value' ****
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--echo Note: the following output may have changed since the failure was detected
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--echo **** Showing STATUS, PROCESSLIST ****
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eval SHOW $status_type STATUS LIKE '$status_var';
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SHOW PROCESSLIST;
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die;
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}
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dec $_status_timeout_counter;
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sleep 0.1;
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let $_show_status_value= query_get_value("SHOW $status_type STATUS LIKE '$status_var'", Value, 1);
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let $_query= SELECT NOT('$_show_status_value' $_status_var_comparsion '$status_var_value');
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if ($_is_number)
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{
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let $_query= SELECT NOT($_show_status_value $_status_var_comparsion $status_var_value);
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}
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}
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