Updated Couchbase4.x for data serialization

src/G4/Mcache/Driver/Couchbase/Couchbase4x.php

@@ -3,9 +3,11 @@
 namespace G4\Mcache\Driver\Couchbase;
 
 use Couchbase\ClusterOptions;
+use Couchbase\GetOptions;
 use Couchbase\Cluster;
 use Couchbase\UpsertOptions;
 use Couchbase\ReplaceOptions;
+use G4\Mcache\SerializeTranscoder;
 
 class Couchbase4x implements CouchbaseInterface
 {
@@ -32,8 +34,7 @@ public function delete($key)
             return false;
         }
         try {
-            $mutationResult = $this->clientFactory()->defaultCollection()->remove($key);
-            return $mutationResult->cas();
+            return $this->clientFactory()->defaultCollection()->remove($key)->cas();
         } catch (\Exception $e) {
             return false;
         }
@@ -44,8 +45,11 @@ public function get($key)
         if (!$this->clientFactory()) {
             return false;
         }
+
+        $options = new GetOptions();
+        $options->transcoder(new SerializeTranscoder());
         try {
-            return $this->clientFactory()->defaultCollection()->get($key)->content();
+            return $this->clientFactory()->defaultCollection()->get($key, $options)->content();
         } catch (\Exception $e) {
             return false;
         }
@@ -58,6 +62,7 @@ public function replace($key, $value, $expiration)
         }
         $replaceOptions = (new ReplaceOptions())
             ->expiry($expiration);
+        $replaceOptions->transcoder(new SerializeTranscoder());
         try {
             $mutationResult = $this->clientFactory()->defaultCollection()->replace($key, $value, $replaceOptions);
             return $mutationResult->cas();
@@ -71,8 +76,10 @@ public function set($key, $value, $expiration)
         if (!$this->clientFactory()) {
             return false;
         }
+
         $upsertOptions = (new UpsertOptions())
-            ->expiry($expiration);
+            ->expiry($expiration)
+            ->transcoder(new SerializeTranscoder());
         try {
             $mutationResult = $this->clientFactory()->defaultCollection()->upsert($key, $value, $upsertOptions);
             return $mutationResult->cas();

src/G4/Mcache/SerializeTranscoder.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace G4\Mcache;
+
+use Couchbase\Exception\DecodingFailureException;
+use Couchbase\Transcoder;
+use Couchbase\TranscoderFlags;
+
+class SerializeTranscoder implements Transcoder
+{
+    private static ?SerializeTranscoder $instance;
+
+    public static function getInstance(): Transcoder
+    {
+        if (!isset(self::$instance)) {
+            self::$instance = new SerializeTranscoder();
+        }
+        return self::$instance;
+    }
+
+    public function encode($value): array
+    {
+        return [
+            serialize($value),
+            (new TranscoderFlags(TranscoderFlags::DATA_FORMAT_BINARY))->encode(),
+        ];
+    }
+
+    public function decode(string $bytes, int $flags = 0)
+    {
+        $data = unserialize($bytes);
+        if ($data === false) {
+            throw new DecodingFailureException('Unable to unserialize bytes with SerializeTranscoder');
+        }
+        return $data;
+    }
+}