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vendor/symfony/http-kernel/CacheWarmer/CacheWarmer.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\CacheWarmer;
+
+/**
+ * Abstract cache warmer that knows how to write a file to the cache.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class CacheWarmer implements CacheWarmerInterface
+{
+    protected function writeCacheFile(string $file, $content)
+    {
+        $tmpFile = @tempnam(\dirname($file), basename($file));
+        if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
+            @chmod($file, 0666 & ~umask());
+
+            return;
+        }
+
+        throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $file));
+    }
+}

vendor/symfony/http-kernel/CacheWarmer/CacheWarmerAggregate.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\CacheWarmer;
+
+/**
+ * Aggregates several cache warmers into a single one.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @final
+ */
+class CacheWarmerAggregate implements CacheWarmerInterface
+{
+    private $warmers;
+    private $debug;
+    private $deprecationLogsFilepath;
+    private $optionalsEnabled = false;
+    private $onlyOptionalsEnabled = false;
+
+    /**
+     * @param iterable<mixed, CacheWarmerInterface> $warmers
+     */
+    public function __construct(iterable $warmers = [], bool $debug = false, string $deprecationLogsFilepath = null)
+    {
+        $this->warmers = $warmers;
+        $this->debug = $debug;
+        $this->deprecationLogsFilepath = $deprecationLogsFilepath;
+    }
+
+    public function enableOptionalWarmers()
+    {
+        $this->optionalsEnabled = true;
+    }
+
+    public function enableOnlyOptionalWarmers()
+    {
+        $this->onlyOptionalsEnabled = $this->optionalsEnabled = true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function warmUp(string $cacheDir): array
+    {
+        if ($collectDeprecations = $this->debug && !\defined('PHPUNIT_COMPOSER_INSTALL')) {
+            $collectedLogs = [];
+            $previousHandler = set_error_handler(function ($type, $message, $file, $line) use (&$collectedLogs, &$previousHandler) {
+                if (\E_USER_DEPRECATED !== $type && \E_DEPRECATED !== $type) {
+                    return $previousHandler ? $previousHandler($type, $message, $file, $line) : false;
+                }
+
+                if (isset($collectedLogs[$message])) {
+                    ++$collectedLogs[$message]['count'];
+
+                    return null;
+                }
+
+                $backtrace = debug_backtrace(\DEBUG_BACKTRACE_IGNORE_ARGS, 3);
+                // Clean the trace by removing first frames added by the error handler itself.
+                for ($i = 0; isset($backtrace[$i]); ++$i) {
+                    if (isset($backtrace[$i]['file'], $backtrace[$i]['line']) && $backtrace[$i]['line'] === $line && $backtrace[$i]['file'] === $file) {
+                        $backtrace = \array_slice($backtrace, 1 + $i);
+                        break;
+                    }
+                }
+
+                $collectedLogs[$message] = [
+                    'type' => $type,
+                    'message' => $message,
+                    'file' => $file,
+                    'line' => $line,
+                    'trace' => $backtrace,
+                    'count' => 1,
+                ];
+
+                return null;
+            });
+        }
+
+        $preload = [];
+        try {
+            foreach ($this->warmers as $warmer) {
+                if (!$this->optionalsEnabled && $warmer->isOptional()) {
+                    continue;
+                }
+                if ($this->onlyOptionalsEnabled && !$warmer->isOptional()) {
+                    continue;
+                }
+
+                $preload[] = array_values((array) $warmer->warmUp($cacheDir));
+            }
+        } finally {
+            if ($collectDeprecations) {
+                restore_error_handler();
+
+                if (is_file($this->deprecationLogsFilepath)) {
+                    $previousLogs = unserialize(file_get_contents($this->deprecationLogsFilepath));
+                    if (\is_array($previousLogs)) {
+                        $collectedLogs = array_merge($previousLogs, $collectedLogs);
+                    }
+                }
+
+                file_put_contents($this->deprecationLogsFilepath, serialize(array_values($collectedLogs)));
+            }
+        }
+
+        return array_values(array_unique(array_merge([], ...$preload)));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function isOptional(): bool
+    {
+        return false;
+    }
+}

vendor/symfony/http-kernel/CacheWarmer/CacheWarmerInterface.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\CacheWarmer;
+
+/**
+ * Interface for classes able to warm up the cache.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface CacheWarmerInterface extends WarmableInterface
+{
+    /**
+     * Checks whether this warmer is optional or not.
+     *
+     * Optional warmers can be ignored on certain conditions.
+     *
+     * A warmer should return true if the cache can be
+     * generated incrementally and on-demand.
+     *
+     * @return bool
+     */
+    public function isOptional();
+}

vendor/symfony/http-kernel/CacheWarmer/WarmableInterface.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\CacheWarmer;
+
+/**
+ * Interface for classes that support warming their cache.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface WarmableInterface
+{
+    /**
+     * Warms up the cache.
+     *
+     * @return string[] A list of classes or files to preload on PHP 7.4+
+     */
+    public function warmUp(string $cacheDir);
+}