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<?php |
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namespace PSB\Core\Feature; |
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use PSB\Core\ObjectBuilder\BuilderInterface; |
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use PSB\Core\Pipeline\PipelineModifications; |
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use PSB\Core\Util\Settings; |
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class FeatureActivator |
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{ |
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/** |
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* @var Settings |
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*/ |
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private $settings; |
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/** |
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* @var Feature[] |
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*/ |
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private $features = []; |
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/** |
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* @param Settings $settings |
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*/ |
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public function __construct(Settings $settings) |
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{ |
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$this->settings = $settings; |
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} |
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/** |
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* @param Feature $feature |
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*/ |
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public function addFeature(Feature $feature) |
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{ |
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if ($feature->isEnabledByDefault()) { |
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FeatureSettingsExtensions::enableFeatureByDefault(get_class($feature), $this->settings); |
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} |
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$this->features[] = $feature; |
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} |
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/** |
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* @param BuilderInterface $builder |
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* @param PipelineModifications $pipelineModifications |
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*/ |
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public function activateFeatures(BuilderInterface $builder, PipelineModifications $pipelineModifications) |
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{ |
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$sortedFeatures = $this->sort(); |
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$enabledFeatures = []; |
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foreach ($sortedFeatures as $feature) { |
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$featureFqcn = get_class($feature); |
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if (FeatureSettingsExtensions::isFeatureEnabled($featureFqcn, $this->settings)) { |
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$enabledFeatures[$featureFqcn] = $feature; |
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$feature->configureDefaults($this->settings); |
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} |
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} |
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foreach ($enabledFeatures as $feature) { |
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$this->activateFeature($feature, $enabledFeatures, $builder, $pipelineModifications); |
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} |
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} |
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/** |
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* @return Feature[] |
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*/ |
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private function sort() |
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{ |
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if (empty($this->features)) { |
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return []; |
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} |
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$dependencyGraphBuilder = new FeatureDependencyGraphBuilder($this->features); |
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return $dependencyGraphBuilder->build()->sort(); |
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} |
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/** |
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* @param Feature $feature |
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* @param Feature[] $enabledFeatures |
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* @param BuilderInterface $builder |
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* @param PipelineModifications $pipelineModifications |
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* |
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* @return bool |
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*/ |
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private function activateFeature( |
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Feature $feature, |
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$enabledFeatures, |
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BuilderInterface $builder, |
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PipelineModifications $pipelineModifications |
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) { |
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if ($feature->isActive()) { |
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return true; |
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} |
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$dependencyGroups = $feature->getDependencies(); |
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$groupsActivationStatus = []; |
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foreach ($dependencyGroups as $dependencyGroup) { |
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$dependentFeaturesToActivate = []; |
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foreach ($dependencyGroup as $dependencyFqcn) { |
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if (isset($enabledFeatures[$dependencyFqcn])) { |
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$dependentFeaturesToActivate[$dependencyFqcn] = $enabledFeatures[$dependencyFqcn]; |
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} |
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} |
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$dependenciesActivationStatus = []; |
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foreach ($dependentFeaturesToActivate as $featureFqcn => $dependentFeature) { |
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$dependenciesActivationStatus[$featureFqcn] = $this->activateFeature( |
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$dependentFeature, |
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$enabledFeatures, |
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$builder, |
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$pipelineModifications |
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); |
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} |
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// if at least one dependency in the group has been activated |
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$groupsActivationStatus[] = in_array(true, $dependenciesActivationStatus); |
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} |
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$featureFqcn = get_class($feature); |
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// if all groups have been activated |
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if (!in_array(false, $groupsActivationStatus)) { |
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if (!$feature->checkPrerequisites($this->settings, $builder, $pipelineModifications)) { |
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FeatureSettingsExtensions::markFeatureAsInactive($featureFqcn, $this->settings); |
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return false; |
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} |
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FeatureSettingsExtensions::markFeatureAsActive($featureFqcn, $this->settings); |
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$feature->activate($this->settings, $builder, $pipelineModifications); |
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return true; |
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} |
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FeatureSettingsExtensions::markFeatureAsInactive($featureFqcn, $this->settings); |
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return false; |
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} |
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/** |
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* @return Feature[] |
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*/ |
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1 |
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public function getFeatures() |
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{ |
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return $this->features; |
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} |
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} |
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phpservicebus /
core
