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#173 Fix race condition on certificate issues in scheduled task

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This commit is contained in:
Eugene Venter 2018-03-27 15:30:50 +13:00 committed by Mark Nelson
parent ef239e178e
commit c0e15cbb88
1 changed files with 14 additions and 9 deletions
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23
classes/task/email_certificate_task.php
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@ -125,16 +125,21 @@ class email_certificate_task extends \core\task\scheduled_task {
}
}
// Ok, issue them the certificate.
$customcertissue = new \stdClass();
$customcertissue->customcertid = $customcert->id;
$customcertissue->userid = $enroluser->id;
$customcertissue->code = \mod_customcert\certificate::generate_code();
$customcertissue->emailed = 0;
$customcertissue->timecreated = time();
// Ensure the cert hasn't already been issued, e.g via the UI (view.php) - a race condition.
$issueid = $DB->get_field('customcert_issues', 'id',
array('userid' => $enroluser->id, 'customcertid' => $customcert->id));
if (empty($issueid)) {
// Ok, issue them the certificate.
$customcertissue = new \stdClass();
$customcertissue->customcertid = $customcert->id;
$customcertissue->userid = $enroluser->id;
$customcertissue->code = \mod_customcert\certificate::generate_code();
$customcertissue->emailed = 0;
$customcertissue->timecreated = time();
// Insert the record into the database.
$issueid = $DB->insert_record('customcert_issues', $customcertissue);
// Insert the record into the database.
$issueid = $DB->insert_record('customcert_issues', $customcertissue);
}
// Add them to the array so we email them.
$enroluser->issueid = $issueid;