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<?php |
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namespace PragmaRX\Health\Checkers; |
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use DomainException; |
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use Carbon\CarbonInterval; |
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use PragmaRX\Health\Support\Result; |
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use PragmaRX\Health\Support\Traits\Database; |
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View Code Duplication |
class ServerUptime extends Base |
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{ |
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use Database; |
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/** |
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* Check resource. |
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* |
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* @return Result |
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*/ |
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public function check() |
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{ |
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$this->loadDatabase(); |
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$current = $this->getCurrentUptime(); |
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$this->persist($current); |
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$rebooted = |
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($cs = $this->uptimeInSeconds($current)) < |
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($ss = $this->uptimeInSeconds($this->database)); |
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return $this->makeResult( |
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!$rebooted, |
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$this->makeMessage($current, $this->database) |
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); |
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} |
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/** |
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* Execute command to get an uptime string. |
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* |
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* @return mixed|string |
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* @throws Exception |
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*/ |
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private function executeUptimeCommand() |
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{ |
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$error = exec($this->target->command, $system_string, $output); |
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if ($output !== 0) { |
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throw new DomainException((string) $error); |
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} |
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return (!is_array($system_string) || empty($system_string)) |
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? '' |
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: $system_string[0]; |
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} |
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/** |
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* Get current uptime. |
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* |
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* @return array |
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* @throws Exception |
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*/ |
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protected function getCurrentUptime() |
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{ |
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return $this->parseUptimeString($this->executeUptimeCommand()); |
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} |
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/** |
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* Normalize uptime matches. |
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* |
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* @param $matches |
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* @return \Illuminate\Support\Collection |
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*/ |
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protected function normalizeMatches($matches) |
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{ |
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return collect($matches) |
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->filter(function ($item, $key) { |
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return !is_numeric($key); |
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}) |
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->map(function ($item, $key) { |
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$return = $item[0]; |
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if (starts_with($key, 'load')) { |
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$return = floatval($return); |
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} elseif (is_numeric($return)) { |
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$return = (int) $return; |
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} elseif (empty($return)) { |
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$return = null; |
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} |
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return $return; |
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}) |
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->toArray(); |
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} |
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/** |
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* Parse the uptime string. |
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* |
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* @param $system_string |
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* @return array |
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*/ |
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protected function parseUptimeString($system_string) |
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{ |
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$matches = []; |
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preg_match( |
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$this->target->regex, |
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$system_string, |
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$matches, |
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PREG_OFFSET_CAPTURE |
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); |
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$matches = $this->normalizeMatches($matches); |
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$matches['uptime_string'] = $system_string; |
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return $matches; |
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} |
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/** |
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* Convert uptime to seconds. |
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* |
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* @param $date |
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* @return int |
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*/ |
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protected function uptimeInSeconds($date) |
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{ |
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return ( |
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(isset($date['up_days']) ? $date['up_days'] * 24 * 60 : 0) + |
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(isset($date['up_hours']) ? $date['up_hours'] * 60 : 0) + |
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(isset($date['up_minutes']) ? $date['up_minutes'] : 0) |
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); |
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} |
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/** |
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* Make uptime message. |
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* |
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* @param $current |
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* @param $saved |
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* @return string |
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*/ |
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protected function makeMessage($current, $saved = null) |
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{ |
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$current = $this->toUptimeString($current); |
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$saved = $this->toUptimeString($saved); |
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return sprintf($this->target->getErrorMessage(), $current, $saved); |
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} |
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/** |
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* Convert uptime to human readable string. |
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* |
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* @param $uptime |
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* @return string |
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*/ |
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public function toUptimeString($uptime) |
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{ |
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return (string) CarbonInterval::days( |
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isset($uptime['up_days']) ? $uptime['up_days'] : 0 |
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) |
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->hours(isset($uptime['up_hours']) ? $uptime['up_hours'] : 0) |
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->minutes(isset($uptime['up_minutes']) ? $uptime['up_minutes'] : 0); |
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} |
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} |
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Let’s assume that you have a directory layout like this:
and let’s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: