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<?php |
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namespace Actuator\Health; |
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/** |
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* Default HealthAggregator implementation that aggregates Health |
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* instances and determines the final system state based on a simple ordered list. |
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*/ |
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class OrderedHealthAggregator extends AbstractHealthAggregator |
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{ |
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/** |
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* @var string[] |
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*/ |
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private $statusOrder; |
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/** |
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* Create a new OrderedHealthAggregator instance. |
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*/ |
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public function __construct() |
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{ |
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30 |
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$this->setStatusOrder( |
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[Status::DOWN, Status::OUT_OF_SERVICE, Status::UP, Status::UNKNOWN] |
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); |
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} |
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/** |
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* @param Status[] $candidates |
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* |
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* @return Status |
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*/ |
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protected function aggregateStatus($candidates) |
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{ |
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$filteredCandidates = []; |
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foreach ($candidates as $candidate) { |
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if (array_search($candidate->getCode(), $this->statusOrder) !== false) { |
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$filteredCandidates[] = $candidate; |
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} |
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} |
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30 |
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if (count($filteredCandidates) === 0) { |
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return new Status(Status::UNKNOWN); |
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3 |
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} |
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usort($filteredCandidates, [$this, 'statusComparator']); |
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27 |
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return $filteredCandidates[0]; |
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} |
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/** |
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* Callable used to order Status. |
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* |
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* @param Status $s1 |
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* @param Status $s2 |
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* |
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* @return int |
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*/ |
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private function statusComparator($s1, $s2) |
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{ |
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if (array_search($s1->getCode(), $this->statusOrder) === array_search($s2->getCode(), $this->statusOrder)) { |
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return 0; |
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} |
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return (array_search($s1->getCode(), $this->statusOrder) |
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< array_search($s2->getCode(), $this->statusOrder)) ? -1 : 1; |
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} |
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/** |
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* Set the ordering of the status. |
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* |
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* @param array $statusOrder an ordered array of the status |
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*/ |
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public function setStatusOrder($statusOrder) |
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{ |
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assert(!is_null($statusOrder), 'StatusOrder must not be null'); |
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$this->statusOrder = $statusOrder; |
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} |
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} |
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postalservice14 /
php-actuator
