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MariaDbEventStore.php
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MariaDbEventStore.php
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<?php
/**
* This file is part of prooph/pdo-event-store.
* (c) 2016-2019 Alexander Miertsch <kontakt@codeliner.ws>
* (c) 2016-2019 Sascha-Oliver Prolic <saschaprolic@googlemail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Prooph\EventStore\Pdo;
use Iterator;
use PDO;
use PDOException;
use Prooph\Common\Messaging\MessageFactory;
use Prooph\EventStore\Exception\StreamExistsAlready;
use Prooph\EventStore\Exception\StreamNotFound;
use Prooph\EventStore\Metadata\FieldType;
use Prooph\EventStore\Metadata\MetadataMatcher;
use Prooph\EventStore\Metadata\Operator;
use Prooph\EventStore\Pdo\Exception\ConcurrencyExceptionFactory;
use Prooph\EventStore\Pdo\Exception\ExtensionNotLoaded;
use Prooph\EventStore\Pdo\Exception\RuntimeException;
use Prooph\EventStore\Pdo\Util\Json;
use Prooph\EventStore\Pdo\WriteLockStrategy\NoLockStrategy;
use Prooph\EventStore\Stream;
use Prooph\EventStore\StreamIterator\EmptyStreamIterator;
use Prooph\EventStore\StreamName;
use Prooph\EventStore\Util\Assertion;
final class MariaDbEventStore implements PdoEventStore
{
/**
* @var MessageFactory
*/
private $messageFactory;
/**
* @var PDO
*/
private $connection;
/**
* @var PersistenceStrategy
*/
private $persistenceStrategy;
/**
* @var int
*/
private $loadBatchSize;
/**
* @var string
*/
private $eventStreamsTable;
/**
* @var bool
*/
private $duringCreate = false;
/**
* @var bool
*/
private $disableTransactionHandling;
/**
* @var WriteLockStrategy
*/
private $writeLockStrategy;
/**
* @throws ExtensionNotLoaded
*/
public function __construct(
MessageFactory $messageFactory,
PDO $connection,
PersistenceStrategy $persistenceStrategy,
int $loadBatchSize = 10000,
string $eventStreamsTable = 'event_streams',
bool $disableTransactionHandling = false,
WriteLockStrategy $writeLockStrategy = null
) {
if (! \extension_loaded('pdo_mysql')) {
throw ExtensionNotLoaded::with('pdo_mysql');
}
if (null === $writeLockStrategy) {
$writeLockStrategy = new NoLockStrategy();
}
Assertion::min($loadBatchSize, 1);
$this->messageFactory = $messageFactory;
$this->connection = $connection;
$this->persistenceStrategy = $persistenceStrategy;
$this->loadBatchSize = $loadBatchSize;
$this->eventStreamsTable = $eventStreamsTable;
$this->disableTransactionHandling = $disableTransactionHandling;
$this->writeLockStrategy = $writeLockStrategy;
}
public function fetchStreamMetadata(StreamName $streamName): array
{
$sql = <<<EOT
SELECT metadata FROM `$this->eventStreamsTable`
WHERE real_stream_name = :streamName;
EOT;
$statement = $this->connection->prepare($sql);
try {
$statement->execute(['streamName' => $streamName->toString()]);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
throw RuntimeException::fromStatementErrorInfo($statement->errorInfo());
}
$stream = $statement->fetch(PDO::FETCH_OBJ);
if (! $stream) {
throw StreamNotFound::with($streamName);
}
return Json::decode($stream->metadata);
}
public function updateStreamMetadata(StreamName $streamName, array $newMetadata): void
{
$eventStreamsTable = $this->eventStreamsTable;
$sql = <<<EOT
UPDATE `$eventStreamsTable`
SET metadata = :metadata
WHERE real_stream_name = :streamName;
EOT;
$statement = $this->connection->prepare($sql);
try {
$statement->execute([
'streamName' => $streamName->toString(),
'metadata' => Json::encode($newMetadata),
]);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
throw RuntimeException::fromStatementErrorInfo($statement->errorInfo());
}
if (1 !== $statement->rowCount()) {
throw StreamNotFound::with($streamName);
}
}
public function hasStream(StreamName $streamName): bool
{
$sql = <<<EOT
SELECT COUNT(1) FROM `$this->eventStreamsTable`
WHERE real_stream_name = :streamName;
EOT;
$statement = $this->connection->prepare($sql);
try {
$statement->execute(['streamName' => $streamName->toString()]);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
throw RuntimeException::fromStatementErrorInfo($statement->errorInfo());
}
return '1' === $statement->fetchColumn();
}
public function create(Stream $stream): void
{
$streamName = $stream->streamName();
$this->addStreamToStreamsTable($stream);
try {
$tableName = $this->persistenceStrategy->generateTableName($streamName);
$this->createSchemaFor($tableName);
} catch (RuntimeException $exception) {
$this->connection->exec("DROP TABLE IF EXISTS `$tableName`;");
$this->removeStreamFromStreamsTable($streamName);
throw $exception;
}
if (! $this->disableTransactionHandling) {
$this->connection->beginTransaction();
$this->duringCreate = true;
}
try {
$this->appendTo($streamName, $stream->streamEvents());
} catch (\Throwable $e) {
if (! $this->disableTransactionHandling) {
$this->connection->rollBack();
$this->duringCreate = false;
}
throw $e;
}
if (! $this->disableTransactionHandling) {
$this->connection->commit();
$this->duringCreate = false;
}
}
public function appendTo(StreamName $streamName, Iterator $streamEvents): void
{
$data = $this->persistenceStrategy->prepareData($streamEvents);
if (empty($data)) {
return;
}
$countEntries = \iterator_count($streamEvents);
$columnNames = $this->persistenceStrategy->columnNames();
$tableName = $this->persistenceStrategy->generateTableName($streamName);
$lockName = '_' . $tableName . '_write_lock';
if (! $this->writeLockStrategy->getLock($lockName)) {
throw ConcurrencyExceptionFactory::failedToAcquireLock();
}
$rowPlaces = '(' . \implode(', ', \array_fill(0, \count($columnNames), '?')) . ')';
$allPlaces = \implode(', ', \array_fill(0, $countEntries, $rowPlaces));
$sql = 'INSERT INTO `' . $tableName . '` (' . \implode(', ', $columnNames) . ') VALUES ' . $allPlaces;
if (! $this->disableTransactionHandling && ! $this->connection->inTransaction()) {
$this->connection->beginTransaction();
}
$statement = $this->connection->prepare($sql);
try {
$statement->execute($data);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorInfo()[0] === '42S02') {
if (! $this->disableTransactionHandling && $this->connection->inTransaction() && ! $this->duringCreate) {
$this->connection->rollBack();
}
$this->writeLockStrategy->releaseLock($lockName);
throw StreamNotFound::with($streamName);
}
if ($statement->errorCode() === '23000') {
if (! $this->disableTransactionHandling && $this->connection->inTransaction() && ! $this->duringCreate) {
$this->connection->rollBack();
}
$this->writeLockStrategy->releaseLock($lockName);
throw ConcurrencyExceptionFactory::fromStatementErrorInfo($statement->errorInfo());
}
if ($statement->errorCode() !== '00000') {
if (! $this->disableTransactionHandling && $this->connection->inTransaction() && ! $this->duringCreate) {
$this->connection->rollBack();
}
$this->writeLockStrategy->releaseLock($lockName);
throw new RuntimeException(
\sprintf(
"Error %s. Maybe the event streams table is not setup?\nError-Info: %s",
$statement->errorCode(),
$statement->errorInfo()[2]
)
);
}
if (! $this->disableTransactionHandling && $this->connection->inTransaction() && ! $this->duringCreate) {
$this->connection->commit();
}
$this->writeLockStrategy->releaseLock($lockName);
}
public function load(
StreamName $streamName,
int $fromNumber = 1,
int $count = null,
MetadataMatcher $metadataMatcher = null
): Iterator {
[$where, $values] = $this->createWhereClause($metadataMatcher);
$where[] = '`no` >= :fromNumber';
$whereCondition = 'WHERE ' . \implode(' AND ', $where);
if (null === $count) {
$limit = $this->loadBatchSize;
} else {
$limit = \min($count, $this->loadBatchSize);
}
$tableName = $this->persistenceStrategy->generateTableName($streamName);
if ($this->persistenceStrategy instanceof HasQueryHint) {
$indexName = $this->persistenceStrategy->indexName();
$queryHint = "USE INDEX($indexName)";
} else {
$queryHint = '';
}
$selectQuery = <<<EOT
SELECT * FROM `$tableName` $queryHint
$whereCondition
ORDER BY `no` ASC
LIMIT :limit;
EOT;
$countQuery = <<<EOT
SELECT COUNT(*) FROM `$tableName` $queryHint
$whereCondition
EOT;
$selectStatement = $this->connection->prepare($selectQuery);
$selectStatement->setFetchMode(PDO::FETCH_OBJ);
$selectStatement->bindValue(':fromNumber', $fromNumber, PDO::PARAM_INT);
$selectStatement->bindValue(':limit', $limit, PDO::PARAM_INT);
$countStatement = $this->connection->prepare($countQuery);
$countStatement->setFetchMode(PDO::FETCH_OBJ);
$countStatement->bindValue(':fromNumber', $fromNumber, PDO::PARAM_INT);
foreach ($values as $parameter => $value) {
$selectStatement->bindValue($parameter, $value, \is_int($value) ? PDO::PARAM_INT : PDO::PARAM_STR);
$countStatement->bindValue($parameter, $value, \is_int($value) ? PDO::PARAM_INT : PDO::PARAM_STR);
}
try {
$selectStatement->execute();
$countStatement->execute();
} catch (PDOException $exception) {
// ignore and check error code
}
if ($selectStatement->errorCode() === '42S22') {
throw new \UnexpectedValueException('Unknown field given in metadata matcher');
}
if ($selectStatement->errorCode() !== '00000') {
throw StreamNotFound::with($streamName);
}
$counted = (int) $countStatement->fetchColumn();
if (0 === (null === $count ? $counted : \min($counted, $count))) {
return new EmptyStreamIterator();
}
return new PdoStreamIterator(
$selectStatement,
$countStatement,
$this->messageFactory,
$this->loadBatchSize,
$fromNumber,
$count,
true
);
}
public function loadReverse(
StreamName $streamName,
int $fromNumber = null,
int $count = null,
MetadataMatcher $metadataMatcher = null
): Iterator {
if (null === $fromNumber) {
$fromNumber = PHP_INT_MAX;
}
[$where, $values] = $this->createWhereClause($metadataMatcher);
$where[] = '`no` <= :fromNumber';
$whereCondition = 'WHERE ' . \implode(' AND ', $where);
if (null === $count) {
$limit = $this->loadBatchSize;
} else {
$limit = \min($count, $this->loadBatchSize);
}
$tableName = $this->persistenceStrategy->generateTableName($streamName);
if ($this->persistenceStrategy instanceof HasQueryHint) {
$indexName = $this->persistenceStrategy->indexName();
$queryHint = "USE INDEX($indexName)";
} else {
$queryHint = '';
}
$selectQuery = <<<EOT
SELECT * FROM `$tableName` $queryHint
$whereCondition
ORDER BY `no` DESC
LIMIT :limit;
EOT;
$countQuery = <<<EOT
SELECT COUNT(*) FROM `$tableName` $queryHint
$whereCondition
EOT;
$selectStatement = $this->connection->prepare($selectQuery);
$selectStatement->setFetchMode(PDO::FETCH_OBJ);
$selectStatement->bindValue(':fromNumber', $fromNumber, PDO::PARAM_INT);
$selectStatement->bindValue(':limit', $limit, PDO::PARAM_INT);
$countStatement = $this->connection->prepare($countQuery);
$countStatement->setFetchMode(PDO::FETCH_OBJ);
$countStatement->bindValue(':fromNumber', $fromNumber, PDO::PARAM_INT);
foreach ($values as $parameter => $value) {
$selectStatement->bindValue($parameter, $value, \is_int($value) ? PDO::PARAM_INT : PDO::PARAM_STR);
$countStatement->bindValue($parameter, $value, \is_int($value) ? PDO::PARAM_INT : PDO::PARAM_STR);
}
try {
$selectStatement->execute();
$countStatement->execute();
} catch (PDOException $exception) {
// ignore and check error code
}
if ($selectStatement->errorCode() !== '00000') {
throw StreamNotFound::with($streamName);
}
$counted = (int) $countStatement->fetchColumn();
if (0 === (null === $count ? $counted : \min($counted, $count))) {
return new EmptyStreamIterator();
}
return new PdoStreamIterator(
$selectStatement,
$countStatement,
$this->messageFactory,
$this->loadBatchSize,
$fromNumber,
$count,
false
);
}
public function delete(StreamName $streamName): void
{
if (! $this->disableTransactionHandling && ! $this->connection->inTransaction()) {
$this->connection->beginTransaction();
}
try {
$this->removeStreamFromStreamsTable($streamName);
} catch (StreamNotFound $exception) {
if (! $this->disableTransactionHandling && $this->connection->inTransaction()) {
$this->connection->rollBack();
}
throw $exception;
}
$encodedStreamName = $this->persistenceStrategy->generateTableName($streamName);
$deleteEventStreamSql = <<<EOT
DROP TABLE IF EXISTS `$encodedStreamName`;
EOT;
$statement = $this->connection->prepare($deleteEventStreamSql);
try {
$statement->execute();
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
throw RuntimeException::fromStatementErrorInfo($statement->errorInfo());
}
if (! $this->disableTransactionHandling && $this->connection->inTransaction()) {
$this->connection->commit();
}
}
public function fetchStreamNames(
?string $filter,
?MetadataMatcher $metadataMatcher,
int $limit = 20,
int $offset = 0
): array {
[$where, $values] = $this->createWhereClause($metadataMatcher);
if (null !== $filter) {
$where[] = '`real_stream_name` = :filter';
$values[':filter'] = $filter;
}
$whereCondition = \implode(' AND ', $where);
if (! empty($whereCondition)) {
$whereCondition = 'WHERE ' . $whereCondition;
}
$query = <<<SQL
SELECT `real_stream_name` FROM `$this->eventStreamsTable`
$whereCondition
ORDER BY `real_stream_name` ASC
LIMIT $offset, $limit
SQL;
$statement = $this->connection->prepare($query);
$statement->setFetchMode(PDO::FETCH_OBJ);
try {
$statement->execute($values);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
$errorCode = $statement->errorCode();
$errorInfo = $statement->errorInfo()[2];
throw new RuntimeException(
"Error $errorCode. Maybe the event streams table is not setup?\nError-Info: $errorInfo"
);
}
$result = $statement->fetchAll();
$streamNames = [];
foreach ($result as $streamName) {
$streamNames[] = new StreamName($streamName->real_stream_name);
}
return $streamNames;
}
public function fetchStreamNamesRegex(
string $filter,
?MetadataMatcher $metadataMatcher,
int $limit = 20,
int $offset = 0
): array {
if (empty($filter) || false === @\preg_match("/$filter/", '')) {
throw new Exception\InvalidArgumentException('Invalid regex pattern given');
}
[$where, $values] = $this->createWhereClause($metadataMatcher);
$where[] = '`real_stream_name` REGEXP :filter';
$values[':filter'] = $filter;
$whereCondition = 'WHERE ' . \implode(' AND ', $where);
$query = <<<SQL
SELECT `real_stream_name` FROM `$this->eventStreamsTable`
$whereCondition
ORDER BY `real_stream_name` ASC
LIMIT $offset, $limit
SQL;
$statement = $this->connection->prepare($query);
$statement->setFetchMode(PDO::FETCH_OBJ);
try {
$statement->execute($values);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
$errorCode = $statement->errorCode();
$errorInfo = $statement->errorInfo()[2];
throw new RuntimeException(
"Error $errorCode. Maybe the event streams table is not setup?\nError-Info: $errorInfo"
);
}
$result = $statement->fetchAll();
$streamNames = [];
foreach ($result as $streamName) {
$streamNames[] = new StreamName($streamName->real_stream_name);
}
return $streamNames;
}
public function fetchCategoryNames(?string $filter, int $limit = 20, int $offset = 0): array
{
$values = [];
if (null !== $filter) {
$whereCondition = 'WHERE `category` = :filter AND `category` IS NOT NULL';
$values[':filter'] = $filter;
} else {
$whereCondition = 'WHERE `category` IS NOT NULL';
}
$query = <<<SQL
SELECT `category` FROM `$this->eventStreamsTable`
$whereCondition
GROUP BY `category`
ORDER BY `category` ASC
LIMIT $offset, $limit
SQL;
$statement = $this->connection->prepare($query);
$statement->setFetchMode(PDO::FETCH_OBJ);
try {
$statement->execute($values);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
$errorCode = $statement->errorCode();
$errorInfo = $statement->errorInfo()[2];
throw new RuntimeException(
"Error $errorCode. Maybe the event streams table is not setup?\nError-Info: $errorInfo"
);
}
$result = $statement->fetchAll();
$categoryNames = [];
foreach ($result as $categoryName) {
$categoryNames[] = $categoryName->category;
}
return $categoryNames;
}
public function fetchCategoryNamesRegex(string $filter, int $limit = 20, int $offset = 0): array
{
if (empty($filter) || false === @\preg_match("/$filter/", '')) {
throw new Exception\InvalidArgumentException('Invalid regex pattern given');
}
$values[':filter'] = $filter;
$whereCondition = 'WHERE `category` REGEXP :filter AND `category` IS NOT NULL';
$query = <<<SQL
SELECT `category` FROM `$this->eventStreamsTable`
$whereCondition
GROUP BY `category`
ORDER BY `category` ASC
LIMIT $offset, $limit
SQL;
$statement = $this->connection->prepare($query);
$statement->setFetchMode(PDO::FETCH_OBJ);
try {
$statement->execute($values);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
$errorCode = $statement->errorCode();
$errorInfo = $statement->errorInfo()[2];
throw new RuntimeException(
"Error $errorCode. Maybe the event streams table is not setup?\nError-Info: $errorInfo"
);
}
$result = $statement->fetchAll();
$categoryNames = [];
foreach ($result as $categoryName) {
$categoryNames[] = $categoryName->category;
}
return $categoryNames;
}
private function createWhereClause(?MetadataMatcher $metadataMatcher): array
{
$where = [];
$values = [];
if (! $metadataMatcher) {
return [
$where,
$values,
];
}
foreach ($metadataMatcher->data() as $key => $match) {
$this->convertToColumn($match);
/** @var FieldType $fieldType */
$fieldType = $match['fieldType'];
$field = $match['field'];
/** @var Operator $operator */
$operator = $match['operator'];
$value = $match['value'];
$parameters = [];
if (\is_array($value)) {
foreach ($value as $k => $v) {
$parameters[] = ':metadata_' . $key . '_' . $k;
}
} else {
$parameters = [':metadata_' . $key];
}
$parameterString = \implode(', ', $parameters);
$operatorStringEnd = '';
if ($operator->is(Operator::REGEX())) {
$operatorString = 'REGEXP';
} elseif ($operator->is(Operator::IN())) {
$operatorString = 'IN (';
$operatorStringEnd = ')';
} elseif ($operator->is(Operator::NOT_IN())) {
$operatorString = 'NOT IN (';
$operatorStringEnd = ')';
} else {
$operatorString = $operator->getValue();
}
if ($fieldType->is(FieldType::METADATA())) {
if (\is_bool($value)) {
$where[] = "json_extract(metadata, '$.$field') $operatorString " . ($value ? 1 : 0) . " $operatorStringEnd";
continue;
}
$where[] = "json_value(metadata, '$.$field') $operatorString $parameterString $operatorStringEnd";
} else {
if (\is_bool($value)) {
$where[] = "$field $operatorString " . \var_export($value, true) . ' ' . $operatorStringEnd;
continue;
}
$where[] = "$field $operatorString $parameterString $operatorStringEnd";
}
$value = (array) $value;
foreach ($value as $k => $v) {
$values[$parameters[$k]] = $v;
}
}
return [
$where,
$values,
];
}
private function addStreamToStreamsTable(Stream $stream): void
{
$realStreamName = $stream->streamName()->toString();
$pos = \strpos($realStreamName, '-');
if (false !== $pos && $pos > 0) {
$category = \substr($realStreamName, 0, $pos);
} else {
$category = null;
}
$streamName = $this->persistenceStrategy->generateTableName($stream->streamName());
$metadata = Json::encode($stream->metadata());
$sql = <<<EOT
INSERT INTO `$this->eventStreamsTable` (real_stream_name, stream_name, metadata, category)
VALUES (:realStreamName, :streamName, :metadata, :category);
EOT;
$statement = $this->connection->prepare($sql);
try {
$result = $statement->execute([
':realStreamName' => $realStreamName,
':streamName' => $streamName,
':metadata' => $metadata,
':category' => $category,
]);
} catch (PDOException $exception) {
$result = false;
}
if (! $result) {
if ($statement->errorCode() === '23000') {
throw StreamExistsAlready::with($stream->streamName());
}
$errorCode = $statement->errorCode();
$errorInfo = $statement->errorInfo()[2];
throw new RuntimeException(
"Error $errorCode. Maybe the event streams table is not setup?\nError-Info: $errorInfo"
);
}
}
private function removeStreamFromStreamsTable(StreamName $streamName): void
{
$deleteEventStreamTableEntrySql = <<<EOT
DELETE FROM `$this->eventStreamsTable` WHERE real_stream_name = ?;
EOT;
$statement = $this->connection->prepare($deleteEventStreamTableEntrySql);
try {
$statement->execute([$streamName->toString()]);
} catch (PDOException $exception) {
// ignore and check error code
}
if ($statement->errorCode() !== '00000') {
throw RuntimeException::fromStatementErrorInfo($statement->errorInfo());
}
if (1 !== $statement->rowCount()) {
throw StreamNotFound::with($streamName);
}
}
private function createSchemaFor(string $tableName): void
{
$schema = $this->persistenceStrategy->createSchema($tableName);
foreach ($schema as $command) {
$statement = $this->connection->prepare($command);
try {
$result = $statement->execute();
} catch (PDOException $exception) {
$result = false;
}
if (! $result) {
throw new RuntimeException('Error during createSchemaFor: ' . \implode('; ', $statement->errorInfo()));
}
}
}
/**
* Convert metadata fields into indexed columns
*
* @example `_aggregate__id` => `aggregate_id`
*/
private function convertToColumn(array &$match): void
{
if ($this->persistenceStrategy instanceof MariaDBIndexedPersistenceStrategy) {
$indexedColumns = $this->persistenceStrategy->indexedMetadataFields();
if (\in_array($match['field'], \array_keys($indexedColumns), true)) {
$match['field'] = $indexedColumns[$match['field']];
$match['fieldType'] = FieldType::MESSAGE_PROPERTY();
}
}
}
}