better-testing

PhabricatorSetupCheckMySQL.php
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			<?php

			final class PhabricatorSetupCheckMySQL extends PhabricatorSetupCheck {

			protected function executeChecks() {
			$conn_raw = id(new PhabricatorUser())->establishConnection('w');

			$max_allowed_packet = queryfx_one(
			$conn_raw,
			'SHOW VARIABLES LIKE %s',
			'max_allowed_packet');
			$max_allowed_packet = idx($max_allowed_packet, 'Value', PHP_INT_MAX);

			$recommended_minimum = 1024 * 1024;
			if ($max_allowed_packet < $recommended_minimum) {
			$message = pht(
			"MySQL is configured with a very small 'max_allowed_packet' (%d), ".
			"which may cause some large writes to fail. Strongly consider raising ".
			"this to at least %d in your MySQL configuration.",
			$max_allowed_packet,
			$recommended_minimum);

			$this->newIssue('mysql.max_allowed_packet')
			->setName(pht('Small MySQL "max_allowed_packet"'))
			->setMessage($message);
			}
			}

			}