snapshot of https://github.com/espocrm/espocrm.git (master, 2026-09-18; blobs > 131072B omitted)

application/Espo/Core/Utils/Cache/DataCacheAccess.php

@@ -0,0 +1,172 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Utils\Cache;
+
+use Closure;
+use Espo\Core\Utils\Cache\Exceptions\ReadError;
+use Espo\Core\Utils\Config\SystemConfig;
+use Espo\Core\Utils\DataCache;
+use Espo\Core\Utils\Log;
+use LogicException;
+use stdClass;
+
+/**
+ * @internal
+ * @since 10.1.0
+ * @template T of array<int|string, mixed> | stdClass = array<int|string, mixed> | stdClass
+ * @todo Test.
+ */
+class DataCacheAccess
+{
+    /** @var T|null  */
+    private mixed $data = null;
+
+    private ?string $key = null;
+
+    /** @var (Closure(): T)|null  */
+    private ?Closure $loader = null;
+
+    /** @var (Closure(T): bool)|null  */
+    private ?Closure $validityChecker = null;
+
+    public function __construct(
+        private DataCache $dataCache,
+        private SystemConfig $systemConfig,
+        private Log $log,
+    ) {}
+
+    /**
+     * @param Closure(): T $loader
+     * @param (Closure(T): bool)|null $validityChecker
+     */
+    public function init(string $key, Closure $loader, ?Closure $validityChecker = null): void
+    {
+        $this->key = $key;
+        $this->loader = $loader;
+        $this->validityChecker = $validityChecker;
+
+        $this->data = null;
+    }
+
+    public function reset(): void
+    {
+        $this->data = null;
+    }
+
+    /**
+     * @param T $data
+     */
+    public function set(mixed $data): void
+    {
+        $this->data = $data;
+    }
+
+    public function store(): void
+    {
+        if (!$this->key) {
+            throw new LogicException("Not initialized.");
+        }
+
+        if ($this->data === null) {
+            throw new LogicException("Data not set.");
+        }
+
+        if ($this->systemConfig->useCache()) {
+            $this->dataCache->store($this->key, $this->data);
+        }
+    }
+
+    /**
+     * @return T
+     */
+    public function get(): mixed
+    {
+        if ($this->data && $this->validityChecker && !($this->validityChecker)($this->data)) {
+            $this->data = null;
+        }
+
+        if ($this->data !== null) {
+            return $this->data;
+        }
+
+        $key = $this->key;
+        $loader = $this->loader;
+
+        if (!$key || !$loader) {
+            throw new LogicException("Not initialized.");
+        }
+
+        if ($this->systemConfig->useCache() && $this->dataCache->has($key)) {
+            $this->loadFromCache();
+        }
+
+        if ($this->data === null) {
+            $this->data = $loader();
+
+            if ($this->systemConfig->useCache()) {
+                $this->dataCache->store($key, $this->data);
+            }
+        }
+
+        return $this->data;
+    }
+
+    private function loadFromCache(): void
+    {
+        $key = $this->key ?? throw new LogicException();
+
+        try {
+            $data = $this->dataCache->get($key);
+        } catch (ReadError $e) {
+            $this->log->warning("Corrupted cache data by key '{key}'.", [
+                'exception' => $e,
+                'key' => $key,
+            ]);
+
+            $this->dataCache->clear($key);
+
+            return;
+        }
+
+        if ($data === null) {
+            return;
+        }
+
+        /** @var T $data */
+
+        if ($this->validityChecker && !($this->validityChecker)($data)) {
+            $this->data = null;
+
+            return;
+        }
+
+        $this->data = $data;
+    }
+}