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<?php |
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/** |
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* Copyright 2014 SURFnet bv |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace Surfnet\StepupMiddleware\CommandHandlingBundle\SensitiveData\EventSourcing; |
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use ArrayIterator; |
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use Broadway\Domain\DomainEventStream; |
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use Broadway\Domain\DomainMessage; |
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use Iterator; |
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use IteratorAggregate; |
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use Surfnet\StepupMiddleware\CommandHandlingBundle\SensitiveData\Exception\SensitiveDataApplicationException; |
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use Surfnet\StepupMiddleware\CommandHandlingBundle\SensitiveData\Forgettable; |
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/** |
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* @implements IteratorAggregate<SensitiveDataMessage> |
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*/ |
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class SensitiveDataMessageStream implements IteratorAggregate |
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{ |
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/** |
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* @param SensitiveDataMessage[] $messages |
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*/ |
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public function __construct(private readonly array $messages) |
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{ |
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} |
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public function applyToDomainEventStream(DomainEventStream $domainEventStream): void |
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{ |
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$sensitiveDataMap = $this->createSensitiveDataMap($this->messages); |
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/** @var DomainMessage $domainMessage */ |
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foreach ($domainEventStream as $domainMessage) { |
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$sensitiveDataMessage = $sensitiveDataMap[$domainMessage->getPlayhead()] ?? null; |
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unset($sensitiveDataMap[$domainMessage->getPlayhead()]); |
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$this->setSensitiveData($domainMessage, $sensitiveDataMessage); |
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} |
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if ($sensitiveDataMap !== []) { |
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throw new SensitiveDataApplicationException( |
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sprintf( |
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'%d sensitive data messages are still to be matched to events', |
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count($sensitiveDataMap), |
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), |
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); |
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} |
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} |
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public function forget(): void |
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{ |
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foreach ($this->messages as $message) { |
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$message->forget(); |
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} |
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} |
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public function getIterator(): Iterator |
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{ |
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return new ArrayIterator($this->messages); |
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} |
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private function setSensitiveData( |
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DomainMessage $domainMessage, |
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SensitiveDataMessage $sensitiveDataMessage = null, |
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): void { |
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$event = $domainMessage->getPayload(); |
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$eventIsForgettable = $event instanceof Forgettable; |
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if (!$eventIsForgettable && !$sensitiveDataMessage) { |
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return; |
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} |
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if ($eventIsForgettable && !$sensitiveDataMessage) { |
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throw new SensitiveDataApplicationException( |
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sprintf( |
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'Sensitive data is missing for event with UUID %s, playhead %d', |
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$domainMessage->getId(), |
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$domainMessage->getPlayhead(), |
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), |
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); |
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} |
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if (!$eventIsForgettable) { |
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throw new SensitiveDataApplicationException( |
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sprintf( |
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'Encountered sensitive data for event which does not support sensitive data, UUID %s, playhead %d', |
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$domainMessage->getId(), |
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$domainMessage->getPlayhead(), |
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), |
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); |
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} |
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if ($domainMessage->getId() != $sensitiveDataMessage->getIdentityId()) { |
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throw new SensitiveDataApplicationException( |
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sprintf( |
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'Encountered sensitive data from stream %s for event from stream %s', |
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$sensitiveDataMessage->getIdentityId(), |
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$domainMessage->getId(), |
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), |
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); |
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} |
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$event->setSensitiveData($sensitiveDataMessage->getSensitiveData()); |
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} |
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/** |
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* @param SensitiveDataMessage[] $messages |
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* @return SensitiveDataMessage[] The same messages, but indexed by their playheads. |
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*/ |
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private function createSensitiveDataMap(array $messages): array |
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{ |
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$map = []; |
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foreach ($messages as $message) { |
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$map[$message->getPlayhead()] = $message; |
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} |
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return $map; |
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} |
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} |
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OpenConext /
Stepup-Middleware
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