Predis to v2.2.2

plugins/cache-redis/Predis/Configuration/Option/CRC16.php

@@ -0,0 +1,74 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) 2009-2020 Daniele Alessandri
+ * (c) 2021-2023 Till Krüss
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Predis\Configuration\Option;
+
+use InvalidArgumentException;
+use Predis\Cluster\Hash;
+use Predis\Configuration\OptionInterface;
+use Predis\Configuration\OptionsInterface;
+
+/**
+ * Configures an hash generator used by the redis-cluster connection backend.
+ */
+class CRC16 implements OptionInterface
+{
+    /**
+     * Returns an hash generator instance from a descriptive name.
+     *
+     * @param OptionsInterface $options     Client options.
+     * @param string           $description Identifier of a hash generator (`predis`, `phpiredis`)
+     *
+     * @return callable
+     */
+    protected function getHashGeneratorByDescription(OptionsInterface $options, $description)
+    {
+        if ($description === 'predis') {
+            return new Hash\CRC16();
+        } elseif ($description === 'phpiredis') {
+            return new Hash\PhpiredisCRC16();
+        } else {
+            throw new InvalidArgumentException(
+                'String value for the crc16 option must be either `predis` or `phpiredis`'
+            );
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function filter(OptionsInterface $options, $value)
+    {
+        if (is_callable($value)) {
+            $value = call_user_func($value, $options);
+        }
+
+        if (is_string($value)) {
+            return $this->getHashGeneratorByDescription($options, $value);
+        } elseif ($value instanceof Hash\HashGeneratorInterface) {
+            return $value;
+        } else {
+            $class = get_class($this);
+            throw new InvalidArgumentException("$class expects a valid hash generator");
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDefault(OptionsInterface $options)
+    {
+        return function_exists('phpiredis_utils_crc16')
+            ? new Hash\PhpiredisCRC16()
+            : new Hash\CRC16();
+    }
+}