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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/message-bus 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\MessageBus; |
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use DateTimeImmutable; |
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use Daikon\MessageBus\Error\EnvelopeNotAcceptable; |
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use Daikon\MessageBus\MessageInterface; |
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use Daikon\Metadata\Metadata; |
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use Daikon\Metadata\MetadataInterface; |
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use Ramsey\Uuid\UuidInterface; |
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use Ramsey\Uuid\Uuid; |
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final class Envelope implements EnvelopeInterface |
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{ |
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private UuidInterface $uuid; |
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private DateTimeImmutable $timestamp; |
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private MessageInterface $message; |
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private MetadataInterface $metadata; |
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public static function wrap(MessageInterface $message, MetadataInterface $metadata = null): self |
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{ |
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return new self($message, $metadata); |
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} |
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private function __construct( |
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MessageInterface $message, |
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MetadataInterface $metadata = null, |
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UuidInterface $uuid = null, |
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DateTimeImmutable $timestamp = null |
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) { |
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$this->message = $message; |
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$this->metadata = $metadata ?? Metadata::makeEmpty(); |
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$this->uuid = $uuid ?? Uuid::uuid4(); |
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$this->timestamp = $timestamp ?? new DateTimeImmutable; |
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} |
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public function getTimestamp(): DateTimeImmutable |
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{ |
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return $this->timestamp; |
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} |
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public function getUuid(): UuidInterface |
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{ |
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return $this->uuid; |
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} |
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public function getMetadata(): MetadataInterface |
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{ |
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return $this->metadata; |
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} |
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public function withMetadata(MetadataInterface $metadata): self |
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{ |
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$copy = clone $this; |
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$copy->metadata = $metadata; |
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return $copy; |
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} |
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public function getMessage(): MessageInterface |
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{ |
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return $this->message; |
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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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'uuid' => $this->uuid->toString(), |
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'timestamp' => $this->timestamp->format(self::TIMESTAMP_FORMAT), |
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'metadata' => $this->metadata->toNative(), |
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'message' => $this->message->toNative(), |
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'@message_type' => get_class($this->message), |
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'@metadata_type' => get_class($this->metadata) |
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]; |
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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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$uuid = isset($state['uuid']) ? Uuid::fromString($state['uuid']) : null; |
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$timestamp = isset($state['timestamp']) |
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? DateTimeImmutable::createFromFormat(self::TIMESTAMP_FORMAT, $state['timestamp']) |
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: null; |
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if (false === $timestamp) { |
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throw new EnvelopeNotAcceptable('Unable to parse given timestamp.', EnvelopeNotAcceptable::UNPARSEABLE); |
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} |
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$messageType = $state['@message_type'] ?? null; |
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if (is_null($messageType) || !is_subclass_of($messageType, MessageInterface::class)) { |
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throw new EnvelopeNotAcceptable(sprintf( |
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"Message type '%s' given must be an instance of MessageInterface", |
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$messageType ?? 'null' |
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), EnvelopeNotAcceptable::UNPARSEABLE); |
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} |
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$metadataType = $state['@metadata_type'] ?? null; |
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/** @var MetadataInterface $metadata */ |
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$metadata = $metadataType instanceof MetadataInterface |
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? $metadataType::fromNative($state['metadata']) |
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: Metadata::fromNative($state['metadata'] ?? []); |
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/** @var MessageInterface $message */ |
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$message = $messageType::fromNative($state['message'] ?? null); |
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return new self($message, $metadata, $uuid, $timestamp); |
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} |
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} |
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daikon-cqrs /
message-bus
