/**
* @return MigrationsService
*/
protected function createServiceWithMigrations()
{
$this->migrationsDirectory = __DIR__ . '/../../../Fixtures/Migrations';
require_once __DIR__ . '/../../../Fixtures/BlogEventSourced.php';
// simulate an application and aggregate version state
$currentApplicationVersion = Version::fromString('0.1.0');
VersionManager::setCurrentApplicationVersion($currentApplicationVersion);
VersionManager::persistVersionOfClass(PostEventSourced::class, $currentApplicationVersion);
VersionManager::persistVersionOfClass(\BlogEventSourced::class, $currentApplicationVersion);
// creating migration store
$aggregates = [PostEventSourced::class, \BlogEventSourced::class];
$migratorStore = new InMemoryMigrationStore();
$migratorStore->persist(new Migration($aggregates, $currentApplicationVersion, new \DateTime()));
// creating event store
$eventStore = new InMemoryEventStore();
// add the event store flow
$postId1 = PostId::fromNative(md5(rand()));
$postEventStream1 = new EventStream($this->streamName(PostEventSourced::class), $postId1, [new PostWasCreated($postId1, 'Best restaurants in barcelona', 'empty'), new PostTitleWasChanged($postId1, 'Best cuban restaurants in barcelona')]);
$postId2 = PostId::fromNative(md5(rand()));
$postEventStream2 = new EventStream($this->streamName(PostEventSourced::class), $postId2, [new PostWasCreated($postId2, 'Best things to do with children in barcelona', 'empty'), new PostTitleWasChanged($postId2, 'Things to do with children in barcelona this weekend')]);
$eventStore->persist($postEventStream1, $currentApplicationVersion, $currentApplicationVersion);
$eventStore->persist($postEventStream2, $currentApplicationVersion, $currentApplicationVersion);
// fake BlogEventSourced event stream
$postId2 = PostId::fromNative(md5(rand()));
$postEventStream2 = new EventStream($this->streamName(\BlogEventSourced::class), $postId2, [new PostWasCreated($postId2, 'Blog', 'empty'), new PostTitleWasChanged($postId2, 'new title')]);
$eventStore->persist($postEventStream2, $currentApplicationVersion, $currentApplicationVersion);
return new MigrationsService(new Migrator($this->getClassMetadataFactory(), $migratorStore, $eventStore, $this->migrationsDirectory));
}
/**
* Test migrate method.
*/
public function testMigrate()
{
$this->migrationsDirectory = __DIR__ . '/../../Fixtures/Migrations';
require_once __DIR__ . '/../../Fixtures/BlogEventSourced.php';
// simulate an application and aggregate version state
$currentApplicationVersion = Version::fromString('0.1.0');
$aggregateVersion = Version::fromString('0.1.0');
VersionManager::setCurrentApplicationVersion($currentApplicationVersion);
VersionManager::persistVersionOfClass(PostEventSourced::class, $aggregateVersion);
VersionManager::persistVersionOfClass(\BlogEventSourced::class, $aggregateVersion);
// creating migration store
$aggregates = [PostEventSourced::class, \BlogEventSourced::class];
$migratorStore = new InMemoryMigrationStore();
$migratorStore->persist(new Migration($aggregates, $aggregateVersion, new \DateTime()));
// creating event store
$eventStore = new InMemoryEventStore();
// add the event store flow
$postId1 = PostId::fromNative(md5(rand()));
$postEventStream1 = new EventStream($this->streamName(PostEventSourced::class), $postId1, [new PostWasCreated($postId1, 'Best restaurants in barcelona', 'empty'), new PostTitleWasChanged($postId1, 'Best cuban restaurants in barcelona')]);
$postId2 = PostId::fromNative(md5(rand()));
$postEventStream2 = new EventStream($this->streamName(PostEventSourced::class), $postId2, [new PostWasCreated($postId2, 'Best things to do with children in barcelona', 'empty'), new PostTitleWasChanged($postId2, 'Things to do with children in barcelona this weekend')]);
$eventStore->persist($postEventStream1, $aggregateVersion, $currentApplicationVersion);
$eventStore->persist($postEventStream2, $aggregateVersion, $currentApplicationVersion);
// fake BlogEventSourced event stream
$postId3 = PostId::fromNative(md5(rand()));
$postEventStream2 = new EventStream($this->streamName(\BlogEventSourced::class), $postId3, []);
$eventStore->persist($postEventStream2, $aggregateVersion, $currentApplicationVersion);
// creating snapshot store
$snapshotStore = new InMemorySnapshotStore();
// creating the migrator
$migrator = new MigratorWithSnapshot($this->getClassMetadataFactory(), $migratorStore, $eventStore, $snapshotStore, $this->migrationsDirectory);
$emptyMigrator = new MigratorWithSnapshot($this->getClassMetadataFactory(), $migratorStore, $eventStore, $snapshotStore, __DIR__ . '/../../Fixtures/EmptyMigrations');
$this->given($result = $emptyMigrator->migrate())->then()->boolean($result)->isFalse();
$this->given($status = $migrator->status())->and($nextVersion = $status->nextAvailableVersion())->then()->boolean($migratorStore->hasMigration($nextVersion))->isFalse()->variable($snapshotStore->load('post_event_sourced', $postId1, $aggregateVersion, $currentApplicationVersion))->isNull()->and()->when($result = $migrator->migrate())->and(VersionManager::setCurrentApplicationVersion($migratorStore->getLast()->version()))->then()->boolean($migratorStore->hasMigration($nextVersion))->isTrue()->boolean($result)->isTrue()->variable($snapshotStore->load('post_event_sourced', $postId1, $aggregateVersion, $nextVersion))->isNotNull()->variable($snapshotStore->load('post_event_sourced', $postId2, $aggregateVersion, $nextVersion))->isNotNull()->and()->exception(function () use($migrator) {
// because the V1_0_0\BlogEventSourcedMigration class return an invalid stream
$migrator->migrate();
})->isInstanceOf(\RuntimeException::class);
}
/**
* @return bool
*/
public function migrate()
{
$nextMigration = $this->migrationManager()->nextMigrationToExecute();
$currentApplicationVersion = VersionManager::currentApplicationVersion();
if ($nextMigration !== null) {
foreach ($nextMigration->aggregates() as $aggregateMigrationClass) {
// -- start current application context --
/** @var MigrationInterface $migrationClass */
$migrationClass = new $aggregateMigrationClass();
$aggregateClassName = $migrationClass->aggregateClassName();
$currentAggregateVersion = VersionManager::versionOfClass($aggregateClassName, $currentApplicationVersion);
// get all event streams for this aggregate class name
$eventStreams = $this->eventStore->loadAll($this->streamName($aggregateClassName), $currentAggregateVersion, $currentApplicationVersion);
// -- end current application context --
// -- start new version context --
$nextApplicationVersion = $nextMigration->version();
// iterate for every aggregateRoot event stream
foreach ($eventStreams as $aggregateRootEventStream) {
// migrate the current aggregate event stream
$newAggregateRootEventStream = $migrationClass->migrate($aggregateRootEventStream);
if ($newAggregateRootEventStream === null || $newAggregateRootEventStream !== null && !$newAggregateRootEventStream instanceof EventStream) {
throw new \RuntimeException(sprintf('Invalid migration class %s. The migration method should return the new EventStream', $aggregateMigrationClass));
}
// calculate the new version for every event
$pathVersion = 0;
foreach ($newAggregateRootEventStream->events() as $event) {
$event->setVersion(++$pathVersion);
}
// and the new version for this aggregateRoot
$newAggregateRootVersion = Version::fromString($nextMigration->version()->__toString());
$newAggregateRootVersion->setPatch($pathVersion);
// persist the new event stream for this aggregateRoot.
$this->migrateAggregateRoot($aggregateClassName, $newAggregateRootEventStream, $newAggregateRootVersion, $nextApplicationVersion);
}
// persist the new version of this aggregate class in the VersionManager
VersionManager::persistVersionOfClass($aggregateClassName, $nextMigration->version(), $nextApplicationVersion);
// -- end new version context --
}
// persist the new migration in the store
$this->migrationManager->persistMigration($nextMigration);
return true;
}
return false;
}
