EventStreamRepository::load() - Code Metrics - Inspection of "update to php 7.4 version" - php-service-bus/event-sourcing - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — v4.0 ( ff495d...e0bacf )

by Masiukevich

created 2019-12-02 19:38 UTC

EventStreamRepository::load() A

↳ Parent: EventStreamRepository

Complexity

Conditions	3
Paths	1

Size

Total Lines	66
Code Lines	36

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	28
CRAP Score	3.072

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	3
eloc	36
c	1
b	0
f	0
nc	1
nop	1
dl	0
loc	66
ccs	28
cts	35
cp	0.8
crap	3.072
rs	9.344

How to fix Long Method

<?php

/**
 * Event Sourcing implementation.
 *
 * @author  Maksim Masiukevich <[email protected]>
 * @license MIT
 * @license https://opensource.org/licenses/MIT
 */

declare(strict_types = 1);

namespace ServiceBus\EventSourcing\EventStream;

use function Amp\call;
use function ServiceBus\Common\createWithoutConstructor;
use function ServiceBus\Common\invokeReflectionMethod;
use function ServiceBus\EventSourcing\EventStream\Store\streamToDomainRepresentation;
use function ServiceBus\EventSourcing\EventStream\Store\streamToStoredRepresentation;
use Amp\Promise;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
use ServiceBus\EventSourcing\Aggregate;
use ServiceBus\EventSourcing\AggregateId;
use ServiceBus\EventSourcing\EventStream\Serializer\EventSerializer;
use ServiceBus\EventSourcing\EventStream\Store\EventStreamStore;
use ServiceBus\EventSourcing\EventStream\Store\StoredAggregateEventStream;
use ServiceBus\EventSourcing\Snapshots\Snapshot;
use ServiceBus\EventSourcing\Snapshots\Snapshotter;

/**
 * Repository for working with event streams.
 */
final class EventStreamRepository
{
    public const REVERT_MODE_SOFT_DELETE = 1;

    public const REVERT_MODE_DELETE = 2;

    private EventStreamStore $store;

    private EventSerializer $serializer;

    private Snapshotter $snapshotter;

    private LoggerInterface $logger;

    public function __construct(
        EventStreamStore $store,
        Snapshotter $snapshotter,
        EventSerializer $serializer,
        ?LoggerInterface $logger = null
    ) {
        $this->store       = $store;
        $this->snapshotter = $snapshotter;
        $this->serializer  = $serializer;
        $this->logger      = $logger ?? new NullLogger();
    }

    /**
     * Load aggregate.
     *
     * Returns \ServiceBus\EventSourcing\Aggregate|null
     *
     * @throws \ServiceBus\Common\Exceptions\DateTimeException
     * @throws \ServiceBus\Common\Exceptions\ReflectionApiException
     * @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
     * @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
     * @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
     */
    public function load(AggregateId $id): Promise
    {
        $store      = $this->store;
        $serializer = $this->serializer;
        $snaphotter = $this->snapshotter;
        $logger     = $this->logger;

        return call(
            static function(AggregateId $id) use ($store, $serializer, $snaphotter, $logger): \Generator
            {
                $idValue = $id->toString();
                $idClass = \get_class($id);

                $logger->debug('Load aggregate with id "{aggregateIdClass}:{aggregateId}"', [
                    'aggregateIdClass' => $idClass,
                    'aggregateId'      => $idValue,
                ]);

                try
                {
                    $aggregate         = null;
                    $fromStreamVersion = Aggregate::START_PLAYHEAD_INDEX;

                    /** @var \ServiceBus\EventSourcing\Snapshots\Snapshot|null $loadedSnapshot */
                    $loadedSnapshot = yield $snaphotter->load($id);

                    if (null !== $loadedSnapshot)
                    {
                        $aggregate         = $loadedSnapshot->aggregate;
                        $fromStreamVersion = $aggregate->version() + 1;

                        $logger->debug(
                            'Found a snapshot of the state of the aggregate with the identifier "{aggregateIdClass}:{aggregateId}" on version "{aggregateVersion}"',
                            [
                                'aggregateIdClass' => $idClass,
                                'aggregateId'      => $idValue,
                                'aggregateVersion' => $aggregate->version(),
                            ]
                        );
                    }

                    /** @var \ServiceBus\EventSourcing\EventStream\Store\StoredAggregateEventStream|null $storedEventStream */
                    $storedEventStream = yield $store->load($id, $fromStreamVersion);

                    $aggregate = self::restoreStream($serializer, $aggregate, $storedEventStream);

                    return $aggregate;
                }
                catch (\Throwable $throwable)
                {
                    $logger->debug('Load aggregate with id "{aggregateIdClass}:{aggregateId}" failed', [
                        'aggregateIdClass' => $idClass,
                        'aggregateId'      => $idValue,
                        'throwableMessage' => $throwable->getMessage(),
                        'throwablePoint'   => \sprintf('%s:%d', $throwable->getFile(), $throwable->getLine()),
                    ]);

                    throw $throwable;
                }
                finally
                {
                    /** @psalm-suppress PossiblyUndefinedVariable */
                    unset($storedEventStream, $loadedSnapshot, $fromStreamVersion);
                }
            },
            $id
        );
    }

    /**
     * Save a new event stream.
     *
     * Returns array<int, object>
     *
     * @throws \ServiceBus\Common\Exceptions\DateTimeException
     * @throws \ServiceBus\Common\Exceptions\ReflectionApiException
     * @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
     * @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
     * @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
     * @throws \ServiceBus\Storage\Common\Exceptions\UniqueConstraintViolationCheckFailed
     */
    public function save(Aggregate $aggregate): Promise
    {
        $store      = $this->store;
        $serializer = $this->serializer;
        $snaphotter = $this->snapshotter;
        $logger     = $this->logger;

        return call(
            static function(Aggregate $aggregate) use ($store, $serializer, $snaphotter, $logger): \Generator
            {
                $id = $aggregate->id();

                $idValue = $id->toString();
                $idClass = \get_class($id);

                $logger->debug('Save new aggregate with identifier "{aggregateIdClass}:{aggregateId}"', [
                    'aggregateIdClass' => $idClass,
                    'aggregateId'      => $idValue,
                ]);

                try
                {
                    /**
                     * @psalm-var array<int, object> $raisedEvents
                     *
                     * @var object[] $raisedEvents
                     */
                    $raisedEvents = yield from self::doStore($serializer, $store, $snaphotter, $aggregate, true);

                    return $raisedEvents;
                }
                catch (\Throwable $throwable)
                {
                    $logger->debug('Save new aggregate with identifier "{aggregateIdClass}:{aggregateId}" failed', [
                        'aggregateIdClass' => $idClass,
                        'aggregateId'      => $idValue,
                        'throwableMessage' => $throwable->getMessage(),
                        'throwablePoint'   => \sprintf('%s:%d', $throwable->getFile(), $throwable->getLine()),
                    ]);

                    throw $throwable;
                }
            },
            $aggregate
        );
    }

    /**
     * Update existent event stream (append events).
     *
     * Returns array<int, object>
     *
     * @throws \ServiceBus\Common\Exceptions\DateTimeException
     * @throws \ServiceBus\Common\Exceptions\ReflectionApiException
     * @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
     * @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
     * @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
     */
    public function update(Aggregate $aggregate): Promise
    {
        $store      = $this->store;
        $serializer = $this->serializer;
        $snaphotter = $this->snapshotter;
        $logger     = $this->logger;

        return call(
            static function(Aggregate $aggregate) use ($store, $serializer, $snaphotter, $logger): \Generator
            {
                $id = $aggregate->id();

                $idValue = $id->toString();
                $idClass = \get_class($id);

                $logger->debug('Adding events to an existing stream with identifier "{aggregateIdClass}:{aggregateId}"', [
                    'aggregateIdClass' => $idClass,
                    'aggregateId'      => $idValue,
                ]);

                try
                {
                    /**
                     * @psalm-var array<int, object> $raisedEvents
                     *
                     * @var object[] $raisedEvents
                     */
                    $raisedEvents = yield from self::doStore($serializer, $store, $snaphotter, $aggregate, false);

                    return $raisedEvents;
                }
                catch (\Throwable $throwable)
                {
                    $logger->debug('Adding events to an existing stream with identifier "{aggregateIdClass}:{aggregateId}', [
                        'aggregateIdClass' => $idClass,
                        'aggregateId'      => $idValue,
                        'throwableMessage' => $throwable->getMessage(),
                        'throwablePoint'   => \sprintf('%s:%d', $throwable->getFile(), $throwable->getLine()),
                    ]);

                    throw $throwable;
                }
            },
            $aggregate
        );
    }

    /**
     * Revert aggregate to specified version.
     *
     * Returns \ServiceBus\EventSourcing\Aggregate
     *
     * Mode options:
     *   - 1 (self::REVERT_MODE_SOFT_DELETE): Mark tail events as deleted (soft deletion). There may be version
     *   conflicts in some situations
     *   - 2 (self::REVERT_MODE_DELETE): Removes tail events from the database (the best option)
     *
     * @throws \ServiceBus\Common\Exceptions\DateTimeException
     * @throws \ServiceBus\Common\Exceptions\ReflectionApiException
     * @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
     * @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
     * @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
     */
    public function revert(Aggregate $aggregate, int $toVersion, int $mode = self::REVERT_MODE_SOFT_DELETE): Promise
    {
        $store      = $this->store;
        $serializer = $this->serializer;
        $snaphotter = $this->snapshotter;
        $logger     = $this->logger;

        return call(
            static function(Aggregate $aggregate, int $toVersion, int $mode) use ($store, $serializer, $snaphotter, $logger): \Generator
            {
                $id = $aggregate->id();

                $idValue = $id->toString();
                $idClass = \get_class($id);

                $logger->debug('Rollback of aggregate with identifier "{aggregateIdClass}:{aggregateId}" to version "{aggregateVersion}"', [
                    'aggregateIdClass' => $idClass,
                    'aggregateId'      => $idValue,
                    'aggregateVersion' => $toVersion,
                ]);

                try
                {
                    yield $store->revert($aggregate->id(), $toVersion, self::REVERT_MODE_DELETE === $mode);

                    /** @var StoredAggregateEventStream|null $storedEventStream */
                    $storedEventStream = yield $store->load($aggregate->id());

                    /** @var Aggregate $aggregate */
                    $aggregate = self::restoreStream($serializer, null, $storedEventStream);

                    yield $snaphotter->store(new Snapshot($aggregate, $aggregate->version()));

                    return $aggregate;
                }
                catch (\Throwable $throwable)
                {
                    $logger->debug('Error when rolling back the version of the aggregate with the identifier "{aggregateIdClass}:{aggregateId}', [
                        'aggregateIdClass' => $idClass,
                        'aggregateId'      => $idValue,
                        'throwableMessage' => $throwable->getMessage(),
                        'throwablePoint'   => \sprintf('%s:%d', $throwable->getFile(), $throwable->getLine()),
                    ]);

                    throw $throwable;
                }
                finally
                {
                    /** @psalm-suppress PossiblyUndefinedVariable */
                    unset($storedEventStream);
                }
            },
            $aggregate,
            $toVersion,
            $mode
        );
    }

    /**
     * @throws \ServiceBus\Common\Exceptions\DateTimeException
     * @throws \ServiceBus\Common\Exceptions\ReflectionApiException
     * @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
     * @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
     * @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
     * @throws \ServiceBus\Storage\Common\Exceptions\UniqueConstraintViolationCheckFailed
     */
    private static function doStore(
        EventSerializer $eventSerializer,
        EventStreamStore $eventStreamStore,
        Snapshotter $snapshotter,
        Aggregate $aggregate,
        bool $isNew
    ): \Generator {
        /** @var \ServiceBus\EventSourcing\EventStream\AggregateEventStream $eventStream */
        $eventStream    = invokeReflectionMethod($aggregate, 'makeStream');
        $receivedEvents = $eventStream->originEvents;

        $storedEventStream = streamToStoredRepresentation($eventSerializer, $eventStream);

        /** @noinspection PhpUnnecessaryLocalVariableInspection */
        $promise = true === $isNew
            ? $eventStreamStore->save($storedEventStream)
            : $eventStreamStore->append($storedEventStream);

        yield $promise;

        /** @var \ServiceBus\EventSourcing\Snapshots\Snapshot|null $loadedSnapshot */
        $loadedSnapshot = yield $snapshotter->load($aggregate->id());

        if (true === $snapshotter->snapshotMustBeCreated($aggregate, $loadedSnapshot))
        {
            yield $snapshotter->store(new Snapshot($aggregate, $aggregate->version()));
        }

        unset($eventStream, $loadedSnapshot, $storedEventStream);

        return $receivedEvents;
    }

    /**
     * Restore the aggregate from the event stream/Add missing events to the aggregate from the snapshot.
     *
     * @throws \ServiceBus\Common\Exceptions\DateTimeException
     * @throws \ServiceBus\EventSourcing\EventStream\Serializer\Exceptions\SerializeEventFailed
     * @throws \ServiceBus\Common\Exceptions\ReflectionApiException
     */
    private static function restoreStream(
        EventSerializer $eventSerializer,
        ?Aggregate $aggregate,
        ?StoredAggregateEventStream $storedEventStream
    ): ?Aggregate {
        if (null === $storedEventStream)
        {
            return null;
        }

        $eventStream = streamToDomainRepresentation($eventSerializer, $storedEventStream);

        if (null === $aggregate)
        {
            /**
             * @noinspection CallableParameterUseCaseInTypeContextInspection
             *
             * @var Aggregate $aggregate
             */
            $aggregate = createWithoutConstructor($storedEventStream->aggregateClass);
        }

        invokeReflectionMethod($aggregate, 'appendStream', $eventStream);

        return $aggregate;
    }
}


1		<?php
2
3		/**
4		* Event Sourcing implementation.
5		*
6		* @author Maksim Masiukevich <[email protected]>
7		* @license MIT
8		* @license https://opensource.org/licenses/MIT
9		*/
10
11		declare(strict_types = 1);
12
13		namespace ServiceBus\EventSourcing\EventStream;
14
15		use function Amp\call;
16		use function ServiceBus\Common\createWithoutConstructor;
17		use function ServiceBus\Common\invokeReflectionMethod;
18		use function ServiceBus\EventSourcing\EventStream\Store\streamToDomainRepresentation;
19		use function ServiceBus\EventSourcing\EventStream\Store\streamToStoredRepresentation;
20		use Amp\Promise;
21		use Psr\Log\LoggerInterface;
22		use Psr\Log\NullLogger;
23		use ServiceBus\EventSourcing\Aggregate;
24		use ServiceBus\EventSourcing\AggregateId;
25		use ServiceBus\EventSourcing\EventStream\Serializer\EventSerializer;
26		use ServiceBus\EventSourcing\EventStream\Store\EventStreamStore;
27		use ServiceBus\EventSourcing\EventStream\Store\StoredAggregateEventStream;
28		use ServiceBus\EventSourcing\Snapshots\Snapshot;
29		use ServiceBus\EventSourcing\Snapshots\Snapshotter;
30
31		/**
32		* Repository for working with event streams.
33		*/
34		final class EventStreamRepository
35		{
36		public const REVERT_MODE_SOFT_DELETE = 1;
37
38		public const REVERT_MODE_DELETE = 2;
39
40		private EventStreamStore $store;
41
42		private EventSerializer $serializer;
43
44		private Snapshotter $snapshotter;
45
46		private LoggerInterface $logger;
47
48	8	public function __construct(
49		EventStreamStore $store,
50		Snapshotter $snapshotter,
51		EventSerializer $serializer,
52		?LoggerInterface $logger = null
53		) {
54	8	$this->store = $store;
55	8	$this->snapshotter = $snapshotter;
56	8	$this->serializer = $serializer;
57	8	$this->logger = $logger ?? new NullLogger();
58	8	}
59
60		/**
61		* Load aggregate.
62		*
63		* Returns \ServiceBus\EventSourcing\Aggregate\|null
64		*
65		* @throws \ServiceBus\Common\Exceptions\DateTimeException
66		* @throws \ServiceBus\Common\Exceptions\ReflectionApiException
67		* @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
68		* @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
69		* @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
70		*/
71	2	public function load(AggregateId $id): Promise
72		{
73	2	$store = $this->store;
74	2	$serializer = $this->serializer;
75	2	$snaphotter = $this->snapshotter;
76	2	$logger = $this->logger;
77
78	2	return call(
79		static function(AggregateId $id) use ($store, $serializer, $snaphotter, $logger): \Generator
80		{
81	2	$idValue = $id->toString();
82	2	$idClass = \get_class($id);
83
84	2	$logger->debug('Load aggregate with id "{aggregateIdClass}:{aggregateId}"', [
85	2	'aggregateIdClass' => $idClass,
86	2	'aggregateId' => $idValue,
87		]);
88
89		try
90		{
91	2	$aggregate = null;
92	2	$fromStreamVersion = Aggregate::START_PLAYHEAD_INDEX;
93
94		/** @var \ServiceBus\EventSourcing\Snapshots\Snapshot\|null $loadedSnapshot */
95	2	$loadedSnapshot = yield $snaphotter->load($id);
96
97	2	if (null !== $loadedSnapshot)
98		{
99	1	$aggregate = $loadedSnapshot->aggregate;
100	1	$fromStreamVersion = $aggregate->version() + 1;
101
102	1	$logger->debug(
103	1	'Found a snapshot of the state of the aggregate with the identifier "{aggregateIdClass}:{aggregateId}" on version "{aggregateVersion}"',
104		[
105	1	'aggregateIdClass' => $idClass,
106	1	'aggregateId' => $idValue,
107	1	'aggregateVersion' => $aggregate->version(),
108		]
109		);
110		}
111
112		/** @var \ServiceBus\EventSourcing\EventStream\Store\StoredAggregateEventStream\|null $storedEventStream */
113	2	$storedEventStream = yield $store->load($id, $fromStreamVersion);
114
115	2	$aggregate = self::restoreStream($serializer, $aggregate, $storedEventStream);
116
117	2	return $aggregate;
118		}
119		catch (\Throwable $throwable)
120		{
121		$logger->debug('Load aggregate with id "{aggregateIdClass}:{aggregateId}" failed', [
122		'aggregateIdClass' => $idClass,
123		'aggregateId' => $idValue,
124		'throwableMessage' => $throwable->getMessage(),
125		'throwablePoint' => \sprintf('%s:%d', $throwable->getFile(), $throwable->getLine()),
126		]);
127
128		throw $throwable;
129		}
130		finally
131		{
132		/** @psalm-suppress PossiblyUndefinedVariable */
133	2	unset($storedEventStream, $loadedSnapshot, $fromStreamVersion);
134		}
135	2	},
136	2	$id
137		);
138		}
139
140		/**
141		* Save a new event stream.
142		*
143		* Returns array<int, object>
144		*
145		* @throws \ServiceBus\Common\Exceptions\DateTimeException
146		* @throws \ServiceBus\Common\Exceptions\ReflectionApiException
147		* @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
148		* @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
149		* @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
150		* @throws \ServiceBus\Storage\Common\Exceptions\UniqueConstraintViolationCheckFailed
151		*/
152	7	public function save(Aggregate $aggregate): Promise
153		{
154	7	$store = $this->store;
155	7	$serializer = $this->serializer;
156	7	$snaphotter = $this->snapshotter;
157	7	$logger = $this->logger;
158
159	7	return call(
160		static function(Aggregate $aggregate) use ($store, $serializer, $snaphotter, $logger): \Generator
161		{
162	7	$id = $aggregate->id();
163
164	7	$idValue = $id->toString();
165	7	$idClass = \get_class($id);
166
167	7	$logger->debug('Save new aggregate with identifier "{aggregateIdClass}:{aggregateId}"', [
168	7	'aggregateIdClass' => $idClass,
169	7	'aggregateId' => $idValue,
170		]);
171
172		try
173		{
174		/**
175		* @psalm-var array<int, object> $raisedEvents
176		*
177		* @var object[] $raisedEvents
178		*/
179	7	$raisedEvents = yield from self::doStore($serializer, $store, $snaphotter, $aggregate, true);
180
181	7	return $raisedEvents;
182		}
183	1	catch (\Throwable $throwable)
184		{
185	1	$logger->debug('Save new aggregate with identifier "{aggregateIdClass}:{aggregateId}" failed', [
186	1	'aggregateIdClass' => $idClass,
187	1	'aggregateId' => $idValue,
188	1	'throwableMessage' => $throwable->getMessage(),
189	1	'throwablePoint' => \sprintf('%s:%d', $throwable->getFile(), $throwable->getLine()),
190		]);
191
192	1	throw $throwable;
193		}
194	7	},
195	7	$aggregate
196		);
197		}
198
199		/**
200		* Update existent event stream (append events).
201		*
202		* Returns array<int, object>
203		*
204		* @throws \ServiceBus\Common\Exceptions\DateTimeException
205		* @throws \ServiceBus\Common\Exceptions\ReflectionApiException
206		* @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
207		* @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
208		* @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
209		*/
210	5	public function update(Aggregate $aggregate): Promise
211		{
212	5	$store = $this->store;
213	5	$serializer = $this->serializer;
214	5	$snaphotter = $this->snapshotter;
215	5	$logger = $this->logger;
216
217	5	return call(
218		static function(Aggregate $aggregate) use ($store, $serializer, $snaphotter, $logger): \Generator
219		{
220	5	$id = $aggregate->id();
221
222	5	$idValue = $id->toString();
223	5	$idClass = \get_class($id);
224
225	5	$logger->debug('Adding events to an existing stream with identifier "{aggregateIdClass}:{aggregateId}"', [
226	5	'aggregateIdClass' => $idClass,
227	5	'aggregateId' => $idValue,
228		]);
229
230		try
231		{
232		/**
233		* @psalm-var array<int, object> $raisedEvents
234		*
235		* @var object[] $raisedEvents
236		*/
237	5	$raisedEvents = yield from self::doStore($serializer, $store, $snaphotter, $aggregate, false);
238
239	5	return $raisedEvents;
240		}
241		catch (\Throwable $throwable)
242		{
243		$logger->debug('Adding events to an existing stream with identifier "{aggregateIdClass}:{aggregateId}', [
244		'aggregateIdClass' => $idClass,
245		'aggregateId' => $idValue,
246		'throwableMessage' => $throwable->getMessage(),
247		'throwablePoint' => \sprintf('%s:%d', $throwable->getFile(), $throwable->getLine()),
248		]);
249
250		throw $throwable;
251		}
252	5	},
253	5	$aggregate
254		);
255		}
256
257		/**
258		* Revert aggregate to specified version.
259		*
260		* Returns \ServiceBus\EventSourcing\Aggregate
261		*
262		* Mode options:
263		* - 1 (self::REVERT_MODE_SOFT_DELETE): Mark tail events as deleted (soft deletion). There may be version
264		* conflicts in some situations
265		* - 2 (self::REVERT_MODE_DELETE): Removes tail events from the database (the best option)
266		*
267		* @throws \ServiceBus\Common\Exceptions\DateTimeException
268		* @throws \ServiceBus\Common\Exceptions\ReflectionApiException
269		* @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
270		* @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
271		* @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
272		*/
273	4	public function revert(Aggregate $aggregate, int $toVersion, int $mode = self::REVERT_MODE_SOFT_DELETE): Promise
274		{
275	4	$store = $this->store;
276	4	$serializer = $this->serializer;
277	4	$snaphotter = $this->snapshotter;
278	4	$logger = $this->logger;
279
280	4	return call(
281		static function(Aggregate $aggregate, int $toVersion, int $mode) use ($store, $serializer, $snaphotter, $logger): \Generator
282		{
283	4	$id = $aggregate->id();
284
285	4	$idValue = $id->toString();
286	4	$idClass = \get_class($id);
287
288	4	$logger->debug('Rollback of aggregate with identifier "{aggregateIdClass}:{aggregateId}" to version "{aggregateVersion}"', [
289	4	'aggregateIdClass' => $idClass,
290	4	'aggregateId' => $idValue,
291	4	'aggregateVersion' => $toVersion,
292		]);
293
294		try
295		{
296	4	yield $store->revert($aggregate->id(), $toVersion, self::REVERT_MODE_DELETE === $mode);
297
298		/** @var StoredAggregateEventStream\|null $storedEventStream */
299	3	$storedEventStream = yield $store->load($aggregate->id());
300
301		/** @var Aggregate $aggregate */
302	3	$aggregate = self::restoreStream($serializer, null, $storedEventStream);
303
304	3	yield $snaphotter->store(new Snapshot($aggregate, $aggregate->version()));
305
306	3	return $aggregate;
307		}
308	2	catch (\Throwable $throwable)
309		{
310	2	$logger->debug('Error when rolling back the version of the aggregate with the identifier "{aggregateIdClass}:{aggregateId}', [
311	2	'aggregateIdClass' => $idClass,
312	2	'aggregateId' => $idValue,
313	2	'throwableMessage' => $throwable->getMessage(),
314	2	'throwablePoint' => \sprintf('%s:%d', $throwable->getFile(), $throwable->getLine()),
315		]);
316
317	2	throw $throwable;
318		}
319		finally
320		{
321		/** @psalm-suppress PossiblyUndefinedVariable */
322	4	unset($storedEventStream);
323		}
324	4	},
325	4	$aggregate,
326	4	$toVersion,
327	4	$mode
328		);
329		}
330
331		/**
332		* @throws \ServiceBus\Common\Exceptions\DateTimeException
333		* @throws \ServiceBus\Common\Exceptions\ReflectionApiException
334		* @throws \ServiceBus\Storage\Common\Exceptions\ConnectionFailed
335		* @throws \ServiceBus\Storage\Common\Exceptions\InvalidConfigurationOptions
336		* @throws \ServiceBus\Storage\Common\Exceptions\StorageInteractingFailed
337		* @throws \ServiceBus\Storage\Common\Exceptions\UniqueConstraintViolationCheckFailed
338		*/
339	7	private static function doStore(
340		EventSerializer $eventSerializer,
341		EventStreamStore $eventStreamStore,
342		Snapshotter $snapshotter,
343		Aggregate $aggregate,
344		bool $isNew
345		): \Generator {
346		/** @var \ServiceBus\EventSourcing\EventStream\AggregateEventStream $eventStream */
347	7	$eventStream = invokeReflectionMethod($aggregate, 'makeStream');
348	7	$receivedEvents = $eventStream->originEvents;
349
350	7	$storedEventStream = streamToStoredRepresentation($eventSerializer, $eventStream);
351
352		/** @noinspection PhpUnnecessaryLocalVariableInspection */
353	7	$promise = true === $isNew
354	7	? $eventStreamStore->save($storedEventStream)
355	7	: $eventStreamStore->append($storedEventStream);
356
357	7	yield $promise;
358
359		/** @var \ServiceBus\EventSourcing\Snapshots\Snapshot\|null $loadedSnapshot */
360	7	$loadedSnapshot = yield $snapshotter->load($aggregate->id());
361
362	7	if (true === $snapshotter->snapshotMustBeCreated($aggregate, $loadedSnapshot))
363		{
364	7	yield $snapshotter->store(new Snapshot($aggregate, $aggregate->version()));
365		}
366
367	7	unset($eventStream, $loadedSnapshot, $storedEventStream);
368
369	7	return $receivedEvents;
370		}
371
372		/**
373		* Restore the aggregate from the event stream/Add missing events to the aggregate from the snapshot.
374		*
375		* @throws \ServiceBus\Common\Exceptions\DateTimeException
376		* @throws \ServiceBus\EventSourcing\EventStream\Serializer\Exceptions\SerializeEventFailed
377		* @throws \ServiceBus\Common\Exceptions\ReflectionApiException
378		*/
379	5	private static function restoreStream(
380		EventSerializer $eventSerializer,
381		?Aggregate $aggregate,
382		?StoredAggregateEventStream $storedEventStream
383		): ?Aggregate {
384	5	if (null === $storedEventStream)
385		{
386		return null;
387		}
388
389	5	$eventStream = streamToDomainRepresentation($eventSerializer, $storedEventStream);
390
391	5	if (null === $aggregate)
392		{
393		/**
394		* @noinspection CallableParameterUseCaseInTypeContextInspection
395		*
396		* @var Aggregate $aggregate
397		*/
398	4	$aggregate = createWithoutConstructor($storedEventStream->aggregateClass);
399		}
400
401	5	invokeReflectionMethod($aggregate, 'appendStream', $eventStream);
402
403	5	return $aggregate;
404		}
405		}
406

php-service-bus / event-sourcing

Push — v4.0 ( ff495d...e0bacf )

EventStreamRepository::load() A

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