Add fake elasticsearch checker

UPGRADE-2.0.md

@@ -11,6 +11,7 @@
 - New method `deleteByDocumentIds` in the `MonsieurBiz\SyliusSearchPlugin\Index\IndexerInterface` interface
 - Deprecated the method `deleteByDocuments` in the `MonsieurBiz\SyliusSearchPlugin\Index\IndexerInterface` interface. Use `deleteByDocumentIds` instead. 
 - `ChannelFilter` and `EnabledFilter` in `MonsieurBiz\SyliusSearchPlugin\Search\Request\QueryFilter\Product` were moved to `MonsieurBiz\SyliusSearchPlugin\Search\Request\QueryFilter`
+- A fallback on the Sylius' taxon display is now used to keep your pages even if you Elasticsearch instance is down. If you want to disable it, check the [FakeElasticsearchChecker](docs/disable_elasticsearch_checker.md)
 
 # UPGRADE FROM v1.X.X TO v2.0.x
 

docs/disable_elasticsearch_checker.md

@@ -0,0 +1,11 @@
+# Disable the ElasticsearchChecker
+
+The plugin now checks if the Elasticsearch server is running before each search. 
+
+If you want to disable this feature, you can do it by adding the following configuration:
+
+```yaml
+services:
+    monsieurbiz.search.checker.elasticsearch_checker:
+        class: MonsieurBiz\SyliusSearchPlugin\Checker\FakeElasticsearchChecker
+```

docs/index.md

@@ -2,6 +2,7 @@
 
 ## Menu
 
+- [Disable the ElasticsearchChecker](./disable_elasticsearch_checker.md)
 - [Add custom sorts](./add_custom_sorts.md)
 - [Add custom values for an entity](./add_custom_values.md)
 - [Add custom filters](./add_custom_filters.md)

src/Checker/FakeElasticsearchChecker.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of Monsieur Biz' Search plugin for Sylius.
+ *
+ * (c) Monsieur Biz <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE.txt
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace MonsieurBiz\SyliusSearchPlugin\Checker;
+
+class FakeElasticsearchChecker implements ElasticsearchCheckerInterface
+{
+    public function check(): bool
+    {
+        return true;
+    }
+}