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#17893298 : added DB based lock (using unique key)

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git-svn-id: http://xe-core.googlecode.com/svn/sandbox@6000 201d5d3c-b55e-5fd7-737f-ddc643e51545
This commit is contained in:
haneul 2009-03-30 16:18:43 +00:00
parent fb18db9528
commit ea7c87ec0d
5 changed files with 60 additions and 0 deletions
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28
modules/module/module.controller.php
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@ -646,5 +646,33 @@
$args->module_filebox_srl = $vars->module_filebox_srl;
return executeQuery('module.deleteModuleFileBox', $args);
}
/**
* @brief function of locking (timeout is in seconds)
*/
function lock($lock_name, $timeout, $member_srl = null) {
$this->unlockTimeoutPassed();
$args->lock_name = $lock_name;
if(!$timeout) $timeout = 60;
$args->deadline = date("YmdHis", time() + $timeout);
if($member_srl) $args->member_srl = $member_srl;
$output = executeQuery('module.insertLock', $args);
if($output->toBool()) {
$output->add('lock_name', $lock_name);
$output->add('deadline', $args->deadline);
}
return $output;
}
function unlockTimeoutPassed() {
executeQuery('module.deleteLocksTimeoutPassed');
}
function unlock($lock_name, $deadline) {
$args->lock_name = $lock_name;
$args->deadline = $deadline;
$output = executeQuery('module.deleteLock', $args);
return $output;
}
}
?>

9
modules/module/queries/deleteLock.xml Normal file
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@ -0,0 +1,9 @@
<query id="deleteLock" action="delete">
<tables>
<table name="module_locks" />
</tables>
<conditions>
<condition operation="equal" column="lock_name" var="lock_name" notnull="notnull" />
<condition operation="equal" column="deadline" var="deadline" notnull="notnull" pipe="and" />
</conditions>
</query>

8
modules/module/queries/deleteLocksTimeoutPassed.xml Normal file
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@ -0,0 +1,8 @@
<query id="deleteLocksTimeoutPassed" action="delete">
<tables>
<table name="module_locks" />
</tables>
<conditions>
<condition operation="below" column="deadline" var="deadline" default="curdate()" notnull="notnull" />
</conditions>
</query>

10
modules/module/queries/insertLock.xml Normal file
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@ -0,0 +1,10 @@
<query id="insertLock" action="insert">
<tables>
<table name="module_locks" />
</tables>
<columns>
<column name="lock_name" var="lock_name" notnull="notnull" />
<column name="deadline" var="deadline" notnull="notnull" />
<column name="member_srl" var="member_srl" />
</columns>
</query>

5
modules/module/schemas/module_locks.xml Normal file
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@ -0,0 +1,5 @@
<table name="module_locks">
<column name="lock_name" type="varchar" size="40" notnull="notnull" unique="unique_lock_name" />
<column name="deadline" type="date" index="idx_deadline" />
<column name="member_srl" type="number" size="11" />
</table>