feature: recreate indexes by swapping them under a common alias

src/CoreShop2VueStorefrontBundle/Bridge/EnginePersister.php

@@ -14,7 +14,7 @@
 
 class EnginePersister
 {
-    /** @var Manager */
+    /** @var IndexService */
     private $indexService;
     /** @var DocumentMapperFactory */
     private $documentMapperFactory;

src/CoreShop2VueStorefrontBundle/Bridge/ImporterFactory.php

@@ -26,9 +26,9 @@ public function __construct(PersisterFactory $persisterFactory)
     /**
      * @return array<ImporterFactory>
      */
-    public function create(?string $site = null, ?string $type = null, ?string $language = null, ?string $store = null, ?\DateTimeInterface $since = null): array
+    public function create(?string $site = null, ?string $type = null, ?string $language = null, ?string $store = null, ?\DateTimeInterface $since = null, ?string $runTimestamp = null): array
     {
-        $persisters = $this->persisterFactory->create($site, $type, $language, $store);
+        $persisters = $this->persisterFactory->create($site, $type, $language, $store, $runTimestamp);
         $importers = [];
         foreach ($persisters as $config) {
             $importers[] = new ElasticsearchImporter($config['repository'], $config['persister'], $config['site'], $config['type'], $config['language'], $config['store'], $since);

src/CoreShop2VueStorefrontBundle/Bridge/PersisterFactory.php

@@ -4,6 +4,7 @@
 
 namespace CoreShop2VueStorefrontBundle\Bridge;
 
+use CoreShop2VueStorefrontBundle\Bridge\SwappingIndexService;
 use ONGR\ElasticsearchBundle\Mapping\Converter;
 use ONGR\ElasticsearchBundle\Mapping\IndexSettings;
 use ONGR\ElasticsearchBundle\Service\IndexService;
@@ -77,7 +78,7 @@ public function __construct(ContainerInterface $container, Converter $converter,
     /**
      * @return array<array{persister: PersisterFactory, store: string, language: string, type: string}>
      */
-    public function create(?string $site = null, ?string $type = null, ?string $language = null, ?string $store = null): array
+    public function create(?string $site = null, ?string $type = null, ?string $language = null, ?string $store = null, ?string $runTimestamp = null): array
     {
         $options = $this->resolver->resolve(['site' => $site, 'type' => $type, 'language' => $language, 'store' => $store]);
 
@@ -115,16 +116,9 @@ public function create(?string $site = null, ?string $type = null, ?string $lang
                         ];
 
                         $indexName = $this->inject($this->elasticsearchConfig['index'], $variables);
-                        $settings = new IndexSettings(
-                            $className,
-                            $indexName,
-                            $indexName,
-                            $this->elasticsearchConfig['templates'][$className] ?? [],
-                            $this->inject($this->elasticsearchConfig['hosts'], $variables, true)
-                        );
                         $indexSettings = new IndexSettings(
                             $className,
-                            $indexName,
+                            $runTimestamp ? $indexName.'_'.$runTimestamp : $indexName,
                             $indexName,
                             array_replace_recursive(
                                 $indexSettings->getIndexMetadata(),
@@ -139,6 +133,10 @@ public function create(?string $site = null, ?string $type = null, ?string $lang
                             $indexSettings
                         );
 
+                        if ($runTimestamp) {
+                            $indexService = new SwappingIndexService($indexService, $runTimestamp);
+                        }
+
                         $persisters[] = [
                             'persister' => new EnginePersister($indexService, $this->documentMapperFactory, $language, $concreteStore),
                             'site' => $name,

src/CoreShop2VueStorefrontBundle/Bridge/SwappingIndexService.php

@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace CoreShop2VueStorefrontBundle\Bridge;
+
+use ONGR\ElasticsearchBundle\Service\IndexService;
+
+class SwappingIndexService extends IndexService
+{
+    private $runTimestamp;
+    /**
+     * @var IndexService
+     */
+    private $baseIndexService;
+
+    public function __construct(IndexService $baseIndexService, string $runTimestamp)
+    {
+        $this->baseIndexService = $baseIndexService;
+        $this->runTimestamp = $runTimestamp;
+    }
+
+    /**
+     * Flushes ES and adds extra steps needed for swapping (assign alias to new index, remove from old indices, drop old indices)
+     *
+     * @param array $params
+     * @return array
+     */
+    public function flush(array $params = []): array
+    {
+        $return = $this->baseIndexService->flush($params);
+
+        $indicesClient = $this->baseIndexService->getClient()->indices();
+        $settings = $this->baseIndexService->indexSettings;
+
+        $oldIndices = null;
+        // if alias doesn't exist, the previous index will have a clashing name with alias we're creating so we have to drop it
+        if(!$indicesClient->existsAlias(['name' => $settings->getAlias()])) {
+            $this->baseIndexService->dropIndex();
+        }
+        else {
+            //get index names associated with alias
+            $oldIndices = implode(',', array_keys($indicesClient->getAlias(['name' => $settings->getAlias()])));
+            //delete alias from old indices
+            $indicesClient->deleteAlias([
+                "index" => $oldIndices,
+                "name" => $settings->getAlias()
+            ]);
+        }
+        //assign alias to new index
+        $indicesClient->putAlias([
+            "index" => $settings->getIndexName(),
+            "name" => $settings->getAlias()
+        ]);
+
+        if($oldIndices) {
+            //drop old indices
+            $indicesClient->delete([
+                "index" => $oldIndices
+            ]);
+        }
+
+        return $return;
+    }
+
+    public function getBaseIndexService(): IndexService
+    {
+        return $this->baseIndexService;
+    }
+
+    public function __call($method, $args)
+    {
+        if (!method_exists($this, $method) && method_exists($this->baseIndexService, $method)) {
+            return $this->baseIndexService->$method($args);
+        }
+    }
+}

src/CoreShop2VueStorefrontBundle/Command/IndexCommand.php

@@ -35,6 +35,7 @@ protected function configure()
             ->addArgument('language', InputArgument::OPTIONAL, 'Language to index')
             ->addArgument('store', InputArgument::OPTIONAL, 'Site store to index')
             ->addOption('updated-since', 's', InputOption::VALUE_OPTIONAL, 'Fetch objects updated in the relative timeframe ("5minute", "2hour", "1day", "yesterday" etc)')
+            ->addOption('swap', null, InputOption::VALUE_OPTIONAL, 'Do a full reingest by swapping indices', false)
             ->setName('vsbridge:index-objects')
             ->setDescription('Indexing objects of given type in vuestorefront');
     }
@@ -63,6 +64,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $language = $input->getArgument('language');
         $store = $input->getArgument('store');
 
+        $runTimestamp = date('YmdHis');
         $sinceDatetime = null;
         if (null !== $since = $input->getOption('updated-since')) {
             $sinceDatetime = new \Datetime();
@@ -78,7 +80,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $style->warning(sprintf('Indexing only updated since: %1$s', $sinceDatetime->format('c')));
         }
 
-        $importers = $this->importerFactory->create($site, $type, $language, $store, $sinceDatetime);
+        $importers = $this->importerFactory->create($site, $type, $language, $store, $sinceDatetime, $input->getOption('swap') ? $runTimestamp : null);
 
         /** @var ImporterInterface $importer */
         foreach ($importers as $importer) {