feat: cache.gz

src/Psalm/Config.php

@@ -68,6 +68,7 @@
 use function file_get_contents;
 use function flock;
 use function fopen;
+use function function_exists;
 use function get_class;
 use function get_defined_constants;
 use function get_defined_functions;
@@ -331,6 +332,9 @@ class Config
     /** @var bool */
     public $use_igbinary = false;
 
+    /** @var bool */
+    public $use_gzip = true;
+
     /**
      * @var bool
      */
@@ -1192,6 +1196,10 @@ private static function fromXmlAndPaths(
             $config->use_igbinary = version_compare($igbinary_version, '2.0.5') >= 0;
         }
 
+        if ($config->use_gzip) {
+            $config->use_gzip = function_exists('gzinflate');
+        }
+
         if (!isset($config_xml['findUnusedBaselineEntry'])) {
             $config->config_warnings[] = '"findUnusedBaselineEntry" will be defaulted to "true" in Psalm 6.'
                 . ' You should explicitly enable or disable this setting.';

src/Psalm/Internal/Cache.php

@@ -0,0 +1,92 @@
+<?php
+
+namespace Psalm\Internal;
+
+use Psalm\Config;
+use Psalm\Internal\Provider\Providers;
+
+use function file_exists;
+use function file_put_contents;
+use function gzdeflate;
+use function gzinflate;
+use function igbinary_serialize;
+use function igbinary_unserialize;
+use function serialize;
+use function unlink;
+use function unserialize;
+
+use const LOCK_EX;
+
+/**
+ * @internal
+ */
+class Cache
+{
+    private Config $config;
+
+    public bool $use_igbinary;
+
+    public function __construct(Config $config)
+    {
+        $this->config = $config;
+        $this->use_igbinary = $config->use_igbinary;
+    }
+
+    /**
+     * @return array|object|string|null
+     */
+    public function getItem(string $path)
+    {
+        if (!file_exists($path)) {
+            return null;
+        }
+
+        $cache = Providers::safeFileGetContents($path);
+        if ($this->config->use_gzip) {
+            $inflated = @gzinflate($cache);
+            if ($inflated !== false) {
+                $cache = $inflated;
+            }
+        }
+
+        if ($this->config->use_igbinary) {
+            /** @var object|false $unserialized */
+            $unserialized = igbinary_unserialize($cache);
+        } else {
+            /** @var object|false $unserialized */
+            $unserialized = @unserialize($cache);
+        }
+
+        return $unserialized !== false ? $unserialized : null;
+    }
+
+    public function deleteItem(string $path): void
+    {
+        if (file_exists($path)) {
+            unlink($path);
+        }
+    }
+
+    /**
+     * @param array|object|string $item
+     */
+    public function saveItem(string $path, $item): void
+    {
+        if ($this->config->use_igbinary) {
+            $serialized = igbinary_serialize($item);
+        } else {
+            $serialized = serialize($item);
+        }
+
+        if ($this->config->use_gzip) {
+            $serialized = gzdeflate($serialized);
+        }
+
+        file_put_contents($path, $serialized, LOCK_EX);
+    }
+
+    public function getCacheDirectory(): ?string
+    {
+        return $this->config->getCacheDirectory();
+    }
+}

src/Psalm/Internal/LanguageServer/Provider/FileReferenceCacheProvider.php

@@ -62,7 +62,7 @@ class FileReferenceCacheProvider extends InternalFileReferenceCacheProvider
 
     public function __construct(Config $config)
     {
-        $this->config = $config;
+        parent::__construct($config);
     }
 
     public function getCachedFileReferences(): ?array

src/Psalm/Internal/Provider/ClassLikeStorageCacheProvider.php

@@ -3,45 +3,40 @@
 namespace Psalm\Internal\Provider;
 
 use Psalm\Config;
+use Psalm\Internal\Cache;
 use Psalm\Storage\ClassLikeStorage;
 use RuntimeException;
 use UnexpectedValueException;
 
 use function array_merge;
 use function dirname;
 use function file_exists;
-use function file_put_contents;
 use function filemtime;
 use function get_class;
 use function hash;
-use function igbinary_serialize;
-use function igbinary_unserialize;
 use function is_dir;
 use function is_null;
 use function mkdir;
-use function serialize;
 use function strtolower;
 use function unlink;
-use function unserialize;
 
 use const DIRECTORY_SEPARATOR;
-use const LOCK_EX;
 use const PHP_VERSION_ID;
 
 /**
  * @internal
  */
 class ClassLikeStorageCacheProvider
 {
-    private Config $config;
+    private Cache $cache;
 
     private string $modified_timestamps = '';
 
     private const CLASS_CACHE_DIRECTORY = 'class_cache';
 
     public function __construct(Config $config)
     {
-        $this->config = $config;
+        $this->cache = new Cache($config);
 
         $storage_dir = dirname(__DIR__, 2) . DIRECTORY_SEPARATOR . 'Storage' . DIRECTORY_SEPARATOR;
 
@@ -64,7 +59,7 @@ public function __construct(Config $config)
             $this->modified_timestamps .= ' ' . filemtime($dependent_file_path);
         }
 
-        $this->modified_timestamps .= $this->config->computeHash();
+        $this->modified_timestamps .= $config->computeHash();
     }
 
     public function writeToCache(ClassLikeStorage $storage, string $file_path, string $file_contents): void
@@ -80,11 +75,7 @@ public function writeToCache(ClassLikeStorage $storage, string $file_path, strin
         }
 
         $cache_location = $this->getCacheLocationForClass($fq_classlike_name_lc, $file_path, true);
-        if ($this->config->use_igbinary) {
-            file_put_contents($cache_location, igbinary_serialize($storage), LOCK_EX);
-        } else {
-            file_put_contents($cache_location, serialize($storage), LOCK_EX);
-        }
+        $this->cache->saveItem($cache_location, $storage);
     }
 
     public function getLatestFromCache(
@@ -118,31 +109,11 @@ private function getCacheHash(?string $_unused_file_path, ?string $file_contents
         return PHP_VERSION_ID >= 8_01_00 ? hash('xxh128', $data) : hash('md4', $data);
     }
 
-    /**
-     * @psalm-suppress MixedAssignment
-     */
     private function loadFromCache(string $fq_classlike_name_lc, ?string $file_path): ?ClassLikeStorage
     {
-        $cache_location = $this->getCacheLocationForClass($fq_classlike_name_lc, $file_path);
-
-        if (file_exists($cache_location)) {
-            if ($this->config->use_igbinary) {
-                $storage = igbinary_unserialize(Providers::safeFileGetContents($cache_location));
-
-                if ($storage instanceof ClassLikeStorage) {
-                    return $storage;
-                }
-
-                return null;
-            }
-
-            $storage = unserialize(Providers::safeFileGetContents($cache_location));
-
-            if ($storage instanceof ClassLikeStorage) {
-                return $storage;
-            }
-
-            return null;
+        $storage = $this->cache->getItem($this->getCacheLocationForClass($fq_classlike_name_lc, $file_path));
+        if ($storage instanceof ClassLikeStorage) {
+            return $storage;
         }
 
         return null;
@@ -153,7 +124,7 @@ private function getCacheLocationForClass(
         ?string $file_path,
         bool $create_directory = false
     ): string {
-        $root_cache_directory = $this->config->getCacheDirectory();
+        $root_cache_directory = $this->cache->getCacheDirectory();
 
         if (!$root_cache_directory) {
             throw new UnexpectedValueException('No cache directory defined');
@@ -186,6 +157,6 @@ private function getCacheLocationForClass(
         return $parser_cache_directory
             . DIRECTORY_SEPARATOR
             . $file_path_sha
-            . ($this->config->use_igbinary ? '-igbinary' : '');
+            . ($this->cache->use_igbinary ? '-igbinary' : '');
     }
 }