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CachedClient.php
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CachedClient.php
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<?php
namespace Jackalope\Transport\DoctrineDBAL;
use Doctrine\DBAL\Connection;
use Jackalope\FactoryInterface;
use Jackalope\Node;
use Jackalope\Query\Query;
use PHPCR\ItemNotFoundException;
use PHPCR\RepositoryException;
use Psr\SimpleCache\CacheInterface;
/**
* Class to add caching to the Doctrine DBAL client.
*
* @license http://www.apache.org/licenses Apache License Version 2.0, January 2004
* @license http://opensource.org/licenses/MIT MIT License
* @author Lukas Kahwe Smith <smith@pooteeweet.org>
*/
class CachedClient extends Client
{
/**
* @var CacheInterface[]
*/
private array $caches;
/**
* @var \Closure that accepts a cache key as argument and returns a cleaned up version of the key
*/
private \Closure $keySanitizer;
/**
* @param CacheInterface[] $caches
*/
public function __construct(FactoryInterface $factory, Connection $conn, array $caches)
{
parent::__construct($factory, $conn);
if (!array_key_exists('meta', $caches)) {
throw new \InvalidArgumentException('The meta cache is required when setting up the CachedClient');
}
foreach ($caches as $type => $cache) {
if (!$cache instanceof CacheInterface) {
throw new \InvalidArgumentException(sprintf(
'Cache provided for type "%s" is %s which does not implement %s.',
$type,
is_object($cache) ? get_class($cache) : gettype($cache),
CacheInterface::class
));
}
}
$this->caches = $caches;
$this->keySanitizer = static function ($cacheKey) {
return str_replace(
['%', '.'],
['_', '|'],
\urlencode($cacheKey)
);
};
}
public function setKeySanitizer(\Closure $sanitizer): void
{
$this->keySanitizer = $sanitizer;
}
/**
* @param array|null $caches which caches to invalidate, null means all except meta
*/
private function clearCaches(?array $caches = null): void
{
$caches = $caches ?: ['nodes', 'query'];
foreach ($caches as $cache) {
if (array_key_exists($cache, $this->caches)) {
$this->caches[$cache]->clear();
}
}
}
/**
* Sanitizes the key using $this->keySanitizer.
*/
private function sanitizeKey(string $cacheKey): string
{
if ($sanitizer = $this->keySanitizer) {
return $sanitizer($cacheKey);
}
return $cacheKey;
}
/**
* @throws RepositoryException
*/
private function clearNodeCache(Node $node): void
{
$cacheKey = "nodes: {$node->getPath()}, ".$this->workspaceName;
$cacheKey = $this->sanitizeKey($cacheKey);
$this->caches['nodes']->delete($cacheKey);
// Actually in the DBAL all nodes have a uuid ..
if ($node->isNodeType('mix:referenceable')) {
$uuid = $node->getIdentifier();
$cacheKey = "nodes by uuid: $uuid, ".$this->workspaceName;
$cacheKey = $this->sanitizeKey($cacheKey);
$this->caches['nodes']->delete($cacheKey);
}
}
public function createWorkspace($name, $srcWorkspace = null): void
{
parent::createWorkspace($name, $srcWorkspace);
$this->caches['meta']->delete('workspaces');
$this->caches['meta']->set($this->sanitizeKey("workspace: $name"), 1);
}
public function deleteWorkspace($name): void
{
parent::deleteWorkspace($name);
$this->caches['meta']->delete('workspaces');
$this->caches['meta']->delete($this->sanitizeKey("workspace: $name"));
$this->clearCaches();
}
protected function workspaceExists($workspaceName): bool
{
$cacheKey = "workspace: $workspaceName";
$cacheKey = $this->sanitizeKey($cacheKey);
$result = null !== $this->caches['meta']->get($cacheKey);
if (!$result && parent::workspaceExists($workspaceName)) {
$result = true;
$this->caches['meta']->set($cacheKey, $result);
}
return $result;
}
protected function fetchUserNodeTypes(): array
{
$cacheKey = 'node_types';
$cacheKey = $this->sanitizeKey($cacheKey);
if (!$this->inTransaction && $result = $this->caches['meta']->get($cacheKey)) {
return $result;
}
$result = parent::fetchUserNodeTypes();
if (!$this->inTransaction) {
$this->caches['meta']->set($cacheKey, $result);
}
return $result;
}
public function getNodeTypes($nodeTypes = []): array
{
$cacheKey = 'nodetypes: '.serialize($nodeTypes);
$cacheKey = $this->sanitizeKey($cacheKey);
$result = $this->caches['meta']->get($cacheKey);
if (!$result) {
$result = parent::getNodeTypes($nodeTypes);
$this->caches['meta']->set($cacheKey, $result);
}
return $result;
}
public function getNamespaces(): array
{
if ($this->namespaces instanceof \ArrayObject) {
return parent::getNamespaces();
}
$cacheKey = 'namespaces';
$cacheKey = $this->sanitizeKey($cacheKey);
$result = $this->caches['meta']->get($cacheKey);
if ($result) {
$this->setNamespaces($result);
} else {
$result = parent::getNamespaces();
$this->caches['meta']->set($cacheKey, $result);
}
return (array) $result;
}
public function copyNode($srcAbsPath, $destAbsPath, $srcWorkspace = null): void
{
parent::copyNode($srcAbsPath, $destAbsPath, $srcWorkspace);
$this->clearCaches();
}
public function getAccessibleWorkspaceNames(): array
{
$cacheKey = 'workspaces';
$cacheKey = $this->sanitizeKey($cacheKey);
$workspaces = $this->caches['meta']->get($cacheKey);
if (!$workspaces) {
$workspaces = parent::getAccessibleWorkspaceNames();
$this->caches['meta']->set($cacheKey, $workspaces);
}
return $workspaces;
}
public function getNode(string $path): \stdClass
{
if (!array_key_exists('nodes', $this->caches)) {
return parent::getNode($path);
}
$this->assertLoggedIn();
$cacheKey = "nodes: $path, ".$this->workspaceName;
$cacheKey = $this->sanitizeKey($cacheKey);
if (null !== ($result = $this->caches['nodes']->get($cacheKey))) {
if ('ItemNotFoundException' === $result) {
throw new ItemNotFoundException("Item '$path' not found in workspace '$this->workspaceName'");
}
return $result;
}
try {
$node = parent::getNode($path);
} catch (ItemNotFoundException $e) {
if (array_key_exists('nodes', $this->caches)) {
$this->caches['nodes']->set($cacheKey, 'ItemNotFoundException');
}
throw $e;
}
$this->caches['nodes']->set($cacheKey, $node);
return $node;
}
public function getNodes(array $paths): array
{
if (!array_key_exists('nodes', $this->caches)) {
return parent::getNodes($paths);
}
$nodes = [];
foreach ($paths as $key => $path) {
try {
$nodes[$key] = $this->getNode($path);
} catch (ItemNotFoundException $e) {
// ignore
}
}
return $nodes;
}
public function getNodeByIdentifier(string $uuid): \stdClass
{
$path = $this->getNodePathForIdentifier($uuid);
$data = $this->getNode($path);
$data->{':jcr:path'} = $path;
return $data;
}
public function getNodesByIdentifier(array $identifiers): array
{
$data = [];
foreach ($identifiers as $uuid) {
try {
$path = $this->getNodePathForIdentifier($uuid);
$data[$path] = $this->getNode($path);
} catch (ItemNotFoundException $e) {
// skip
}
}
return $data;
}
public function deleteNodes(array $operations): void
{
parent::deleteNodes($operations);
$this->clearCaches();
}
public function deleteProperties(array $operations): void
{
parent::deleteProperties($operations);
// we do not have the node here, otherwise we could use clearNodeCache() and then just invalidate all queries
$this->clearCaches();
}
public function deleteNodeImmediately(string $path): void
{
parent::deleteNodeImmediately($path);
$this->clearCaches();
}
public function deletePropertyImmediately($path): void
{
parent::deletePropertyImmediately($path);
// we do not have the node here, otherwise we could use clearNodeCache() and then just invalidate all queries
$this->clearCaches();
}
public function moveNodes(array $operations): void
{
parent::moveNodes($operations);
$this->clearCaches();
}
public function moveNodeImmediately(string $srcAbsPath, string $destAbsPath): void
{
parent::moveNodeImmediately($srcAbsPath, $destAbsPath);
$this->clearCaches();
}
public function reorderChildren(Node $node): void
{
parent::reorderChildren($node);
$this->clearNodeCache($node);
}
public function storeNodes(array $operations): void
{
parent::storeNodes($operations);
// we do not have the node here, otherwise we could just use clearNodeCache() on pre-existing parents and then just invalidate all queries
$this->clearCaches();
}
public function getNodePathForIdentifier($uuid, $workspace = null): string
{
if (!array_key_exists('nodes', $this->caches) || null !== $workspace) {
return parent::getNodePathForIdentifier($uuid);
}
$this->assertLoggedIn();
$cacheKey = "nodes by uuid: $uuid, $this->workspaceName";
$cacheKey = $this->sanitizeKey($cacheKey);
if (null !== ($result = $this->caches['nodes']->get($cacheKey))) {
if ('ItemNotFoundException' === $result) {
throw new ItemNotFoundException("no item found with uuid $uuid");
}
return $result;
}
try {
$path = parent::getNodePathForIdentifier($uuid);
} catch (ItemNotFoundException $e) {
if (array_key_exists('nodes', $this->caches)) {
$this->caches['nodes']->set($cacheKey, 'ItemNotFoundException');
}
throw $e;
}
$this->caches['nodes']->set($cacheKey, $path);
return $path;
}
public function registerNodeTypes(array $types, bool $allowUpdate): void
{
parent::registerNodeTypes($types, $allowUpdate);
if (!$this->inTransaction) {
$this->caches['meta']->delete('node_types');
}
}
public function registerNamespace(string $prefix, string $uri): void
{
parent::registerNamespace($prefix, $uri);
$this->caches['meta']->set('namespaces', $this->namespaces);
}
public function unregisterNamespace(string $prefix): void
{
parent::unregisterNamespace($prefix);
$this->caches['meta']->set('namespaces', $this->namespaces);
}
public function getReferences($path, $name = null): array
{
if (!array_key_exists('nodes', $this->caches)) {
return parent::getReferences($path, $name);
}
$cacheKey = "nodes references: $path, $name, ".$this->workspaceName;
$cacheKey = $this->sanitizeKey($cacheKey);
if (null !== ($result = $this->caches['nodes']->get($cacheKey))) {
return $result;
}
$references = parent::getReferences($path, $name);
$this->caches['nodes']->set($cacheKey, $references);
return $references;
}
public function getWeakReferences($path, $name = null): array
{
if (!array_key_exists('nodes', $this->caches)) {
return parent::getWeakReferences($path, $name);
}
$cacheKey = "nodes weak references: $path, $name, ".$this->workspaceName;
$cacheKey = $this->sanitizeKey($cacheKey);
if ($result = $this->caches['nodes']->get($cacheKey)) {
return $result;
}
$references = parent::getWeakReferences($path, $name);
$this->caches['nodes']->set($cacheKey, $references);
return $references;
}
public function query(Query $query): array
{
if (!array_key_exists('query', $this->caches)) {
return parent::query($query);
}
$this->assertLoggedIn();
$cacheKey = "query: {$query->getStatement()}, {$query->getLimit()}, {$query->getOffset()}, {$query->getLanguage()}, ".$this->workspaceName;
$cacheKey = $this->sanitizeKey($cacheKey);
if (null !== ($result = $this->caches['query']->get($cacheKey))) {
return $result;
}
$result = parent::query($query);
$this->caches['query']->set($cacheKey, $result);
return $result;
}
public function commitTransaction(): void
{
parent::commitTransaction();
$this->clearCaches(array_keys($this->caches));
}
public function rollbackTransaction(): void
{
parent::rollbackTransaction();
$this->clearCaches(array_keys($this->caches));
}
}