Fix Redis replication on Redis <5

wouterj · wouterj · commit dbe0cf7280ac · 2021-09-24T10:56:05.000+02:00
diff --git a/src/Symfony/Component/Cache/Adapter/RedisTagAwareAdapter.php b/src/Symfony/Component/Cache/Adapter/RedisTagAwareAdapter.php
@@ -159,6 +159,10 @@ protected function doDeleteYieldTags(array $ids): iterable
         });
 
         foreach ($results as $id => $result) {
+            if ($result instanceof \RedisException) {
+                throw $result;
+            }
+
             try {
                 yield $id => !\is_string($result) || '' === $result ? [] : $this->marshaller->unmarshall($result);
             } catch (\Exception $e) {
@@ -197,6 +201,8 @@ protected function doInvalidate(array $tagIds): bool
         // gargage collect that set from the client side.
 
         $lua = <<<'EOLUA'
+            redis.replicate_commands()
+
             local cursor = '0'
             local id = KEYS[1]
             repeat
@@ -234,14 +240,22 @@ protected function doInvalidate(array $tagIds): bool
         });
 
         $lua = <<<'EOLUA'
+            redis.replicate_commands()
+
             local id = KEYS[1]
             local cursor = table.remove(ARGV)
             redis.call('SREM', '{'..id..'}'..id, unpack(ARGV))
 
             return redis.call('SSCAN', '{'..id..'}'..id, cursor, 'COUNT', 5000)
 EOLUA;
 
-        foreach ($results as $id => [$cursor, $ids]) {
+        foreach ($results as $id => $values) {
+            if ($values instanceof \RedisException) {
+                throw $values;
+            }
+
+            [$cursor, $ids] = $values;
+
             while ($ids || '0' !== $cursor) {
                 $this->doDelete($ids);
 
