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<?php |
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namespace AsyncPHP\Doorman\Rules; |
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use AsyncPHP\Doorman\Profile; |
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use AsyncPHP\Doorman\Rule; |
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use AsyncPHP\Doorman\Rules; |
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use AsyncPHP\Doorman\Task; |
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class InMemoryRules implements Rules |
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{ |
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/** |
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* @var Rule[] |
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*/ |
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protected $rules = array(); |
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/** |
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* @inheritdoc |
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* |
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* @param Rule $rule |
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* |
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* @return $this |
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*/ |
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public function addRule(Rule $rule) |
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{ |
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$hash = spl_object_hash($rule); |
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$this->rules[$hash] = $rule; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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* |
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* @param Rule $rule |
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* |
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* @return $this |
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*/ |
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public function removeRule(Rule $rule) |
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{ |
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$hash = spl_object_hash($rule); |
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if (isset($this->rules[$hash])) { |
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unset($this->rules[$hash]); |
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} |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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* |
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* @param Task $task |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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public function canRunTask(Task $task, Profile $profile) |
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{ |
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$rules = $this->getRulesForTask($task); |
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if (count($rules) === 0) { |
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return true; |
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} |
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foreach ($rules as $rule) { |
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if ($rule->getProcesses() === null) { |
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continue; |
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} |
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if (($rule->getHandler() === null || $rule->getHandler() === $task->getHandler()) && ($this->hasTooManyProcessesRunning($rule, $profile) || $this->hasTooManySiblingProcessesRunning($rule, $profile))) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Gets all the rules that apply to a task. |
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* |
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* @param Task $task |
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* |
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* @return Rule[] |
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*/ |
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protected function getRulesForTask(Task $task) |
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{ |
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return array_filter($this->rules, function (Rule $rule) use ($task) { |
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return $rule->getHandler() === null || $rule->getHandler() === $task->getHandler(); |
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}); |
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} |
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/** |
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* Checks whether there are too many processes running to start a new one. |
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* |
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* @param Rule $rule |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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protected function hasTooManyProcessesRunning(Rule $rule, Profile $profile) |
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{ |
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return $this->withinConstraints($rule, $profile) && count($profile->getProcesses()) >= $rule->getProcesses(); |
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} |
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/** |
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* Checks whether the current profile is within the constraints of a rule. |
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* |
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* @param Rule $rule |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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protected function withinConstraints(Rule $rule, Profile $profile) |
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{ |
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return $this->withinProcessorConstraints($rule, $profile) || $this->withinMemoryConstraints($rule, $profile); |
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} |
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/** |
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* Checks whether the current profile is within the processor constraints of a rule. |
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* |
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* @param Rule $rule |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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protected function withinProcessorConstraints(Rule $rule, Profile $profile) |
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{ |
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if ($rule->getMinimumProcessorUsage() !== null && $rule->getMaximumProcessorUsage() !== null) { |
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return $profile->getProcessorLoad() >= $rule->getMinimumProcessorUsage() && $profile->getProcessorLoad() <= $rule->getMaximumProcessorUsage(); |
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} |
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return false; |
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} |
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/** |
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* Checks whether the current profile is within the memory constraints of a rule. |
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* |
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* @param Rule $rule |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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protected function withinMemoryConstraints(Rule $rule, Profile $profile) |
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{ |
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if ($rule->getMinimumMemoryUsage() !== null && $rule->getMaximumMemoryUsage() !== null) { |
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return $profile->getMemoryLoad() >= $rule->getMinimumMemoryUsage() && $profile->getMemoryLoad() <= $rule->getMaximumMemoryUsage(); |
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} |
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return false; |
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} |
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/** |
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* Checks whether there are too many sibling processes running to start a new one. |
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* |
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* @param Rule $rule |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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protected function hasTooManySiblingProcessesRunning(Rule $rule, Profile $profile) |
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{ |
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return $this->withinSiblingConstraints($rule, $profile) && count($profile->getSiblingProcesses()) >= $rule->getProcesses(); |
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} |
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/** |
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* Checks whether the profile or sibling processes is within the constraints of a rule. |
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* |
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* @param Rule $rule |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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protected function withinSiblingConstraints(Rule $rule, Profile $profile) |
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{ |
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return $this->withinSiblingProcessorConstraints($rule, $profile) || $this->withinSiblingMemoryConstraints($rule, $profile); |
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} |
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/** |
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* Checks whether the profile or sibling processes is within the processor constraints of a rule. |
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* |
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* @param Rule $rule |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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protected function withinSiblingProcessorConstraints(Rule $rule, Profile $profile) |
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{ |
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if ($rule->getMinimumSiblingProcessorUsage() !== null && $rule->getMaximumSiblingProcessorUsage() !== null) { |
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return $profile->getSiblingProcessorLoad() >= $rule->getMinimumSiblingProcessorUsage() && $profile->getSiblingProcessorLoad() <= $rule->getMaximumSiblingProcessorUsage(); |
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} |
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return false; |
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} |
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/** |
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* Checks whether the profile or sibling processes is within the memory constraints of a rule. |
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* |
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* @param Rule $rule |
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* @param Profile $profile |
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* |
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* @return bool |
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*/ |
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protected function withinSiblingMemoryConstraints(Rule $rule, Profile $profile) |
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{ |
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if ($rule->getMinimumSiblingMemoryUsage() !== null && $rule->getMaximumSiblingMemoryUsage() !== null) { |
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return $profile->getSiblingMemoryLoad() >= $rule->getMinimumSiblingMemoryUsage() && $profile->getSiblingMemoryLoad() <= $rule->getMaximumSiblingMemoryUsage(); |
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} |
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return false; |
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} |
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} |
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silverstripe /
doorman
