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<?php declare(strict_types=1); |
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/** |
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* This file is part of the daikon-cqrs/event-sourcing project. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Daikon\EventSourcing\EventStore\Stream; |
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use Daikon\EventSourcing\Aggregate\AggregateId; |
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use Daikon\EventSourcing\Aggregate\AggregateIdInterface; |
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use Daikon\EventSourcing\Aggregate\AggregateRevision; |
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use Daikon\EventSourcing\Aggregate\Event\DomainEventSequenceInterface; |
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use Daikon\EventSourcing\EventStore\Commit\Commit; |
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use Daikon\EventSourcing\EventStore\Commit\CommitInterface; |
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use Daikon\EventSourcing\EventStore\Commit\CommitSequence; |
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use Daikon\EventSourcing\EventStore\Commit\CommitSequenceInterface; |
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use Daikon\Interop\Assertion; |
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use Daikon\Metadata\MetadataInterface; |
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use Ds\Vector; |
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final class Stream implements StreamInterface |
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{ |
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private AggregateIdInterface $aggregateId; |
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private CommitSequenceInterface $commitSequence; |
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private string $commitImplementor; |
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public static function fromAggregateId( |
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AggregateIdInterface $aggregateId, |
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string $commitImplementor = Commit::class |
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): self { |
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return new self($aggregateId); |
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} |
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/** @param array $state */ |
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public static function fromNative($state): self |
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{ |
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Assertion::keyExists($state, 'aggregateId'); |
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Assertion::keyExists($state, 'commitSequence'); |
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return new self( |
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AggregateId::fromNative($state['aggregateId']), |
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CommitSequence::fromNative($state['commitSequence']), |
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$state['commitImplementor'] ?? null |
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); |
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} |
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public function getAggregateId(): AggregateIdInterface |
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{ |
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return $this->aggregateId; |
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} |
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public function getHeadSequence(): Sequence |
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{ |
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if ($this->isEmpty()) { |
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return Sequence::makeInitial(); |
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} |
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return $this->getHead()->getSequence(); |
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} |
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public function getHeadRevision(): AggregateRevision |
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{ |
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if ($this->isEmpty()) { |
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return AggregateRevision::makeEmpty(); |
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} |
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return $this->getHead()->getHeadRevision(); |
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} |
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public function appendEvents(DomainEventSequenceInterface $eventLog, MetadataInterface $metadata): self |
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{ |
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return $this->appendCommit( |
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([$this->commitImplementor, 'make'])( |
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$this->aggregateId, |
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$this->getHeadSequence()->increment(), |
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$eventLog, |
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$metadata |
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) |
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); |
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} |
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public function appendCommit(CommitInterface $commit): self |
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{ |
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$stream = clone $this; |
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$stream->commitSequence = $this->commitSequence->push($commit); |
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return $stream; |
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} |
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public function getHead(): CommitInterface |
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{ |
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return $this->commitSequence->getHead(); |
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} |
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public function getCommitRange(Sequence $fromRev, Sequence $toRev = null): CommitSequenceInterface |
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{ |
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return $this->commitSequence->getSlice($fromRev, $toRev ?? $this->getHeadSequence()); |
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} |
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public function count(): int |
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{ |
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return $this->commitSequence->count(); |
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} |
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public function isEmpty(): bool |
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{ |
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return $this->commitSequence->isEmpty(); |
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} |
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public function toNative(): array |
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{ |
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return [ |
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'commitSequence' => $this->commitSequence->toNative(), |
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'aggregateId' => $this->aggregateId->toNative(), |
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'commitImplementor' => $this->commitImplementor |
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]; |
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} |
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public function getIterator(): Vector |
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{ |
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return $this->commitSequence->getIterator(); |
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} |
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public function findCommitsSince(AggregateRevision $incomingRevision): CommitSequenceInterface |
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{ |
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$previousCommits = []; |
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/** @var CommitInterface $commit */ |
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foreach ($this as $commit) { |
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if ($commit->getTailRevision()->isGreaterThanOrEqual($incomingRevision)) { |
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$previousCommits[] = clone $commit; |
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} |
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} |
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return new CommitSequence($previousCommits); |
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} |
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private function __construct( |
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AggregateIdInterface $aggregateId, |
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CommitSequenceInterface $commitSequence = null, |
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string $commitImplementor = null |
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) { |
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$this->aggregateId = $aggregateId; |
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$this->commitSequence = $commitSequence ?? CommitSequence::makeEmpty(); |
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$this->commitImplementor = $commitImplementor ?? Commit::class; |
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} |
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} |
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daikon-cqrs /
event-sourcing
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