メタデータの解決と保存の処理を統一

app/Listeners/LinkCollector.php

@@ -3,32 +3,23 @@
 namespace App\Listeners;
 
 use App\Events\LinkDiscovered;
-use App\Metadata;
-use App\MetadataResolver\MetadataResolver;
-use App\Tag;
-use App\Utilities\Formatter;
-use GuzzleHttp\Exception\TransferException;
+use App\Services\MetadataResolveService;
 use Illuminate\Contracts\Queue\ShouldQueue;
 use Illuminate\Queue\InteractsWithQueue;
-use Illuminate\Support\Facades\Log;
 
 class LinkCollector
 {
-    /** @var Formatter */
-    private $formatter;
-    /** @var MetadataResolver */
-    private $metadataResolver;
+    /** @var MetadataResolveService */
+    private $metadataResolveService;
 
     /**
      * Create the event listener.
      *
-     * @param Formatter $formatter
-     * @param MetadataResolver $metadataResolver
+     * @param MetadataResolveService $metadataResolveService
      */
-    public function __construct(Formatter $formatter, MetadataResolver $metadataResolver)
+    public function __construct(MetadataResolveService $metadataResolveService)
     {
-        $this->formatter = $formatter;
-        $this->metadataResolver = $metadataResolver;
+        $this->metadataResolveService = $metadataResolveService;
     }
 
     /**
@@ -39,33 +30,11 @@ class LinkCollector
      */
     public function handle(LinkDiscovered $event)
     {
-        // URLの正規化
-        $url = $this->formatter->normalizeUrl($event->url);
-
-        // 無かったら取得
-        // TODO: ある程度古かったら再取得とかありだと思う
-        $metadata = Metadata::find($url);
-        if ($metadata == null || ($metadata->expires_at !== null && $metadata->expires_at < now())) {
-            try {
-                $resolved = $this->metadataResolver->resolve($url);
-                $metadata = Metadata::updateOrCreate(['url' => $url], [
-                    'title' => $resolved->title,
-                    'description' => $resolved->description,
-                    'image' => $resolved->image,
-                    'expires_at' => $resolved->expires_at
-                ]);
-
-                $tagIds = [];
-                foreach ($resolved->normalizedTags() as $tagName) {
-                    $tag = Tag::firstOrCreate(['name' => $tagName]);
-                    $tagIds[] = $tag->id;
-                }
-                $metadata->tags()->sync($tagIds);
-            } catch (TransferException $e) {
-                // 何らかの通信エラーによってメタデータの取得に失敗した時、とりあえずエラーログにURLを残す
-                Log::error(self::class . ': メタデータの取得に失敗 URL=' . $url);
-                report($e);
-            }
+        try {
+            $this->metadataResolveService->execute($event->url);
+        } catch (\Exception $e) {
+            // 今のところこのイベントは同期実行されるので、上流をクラッシュさせないために雑catchする
+            report($e);
         }
     }
 }