Initial commit

src/Broker/TopicManager.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace NoccyLabs\Mercureact\Broker;
+
+use SplObjectStorage;
+
+class TopicManager
+{
+    /** @var array<string,Topic> */
+    private array $topics = [];
+
+
+    public function getTopic(string $topic): Topic
+    {
+        if (!isset($this->topics[$topic])) {
+            $this->topics[$topic] = new Topic($topic);
+        }
+        return $this->topics[$topic];
+    }
+
+    public function publish(Message $message): void
+    {
+        foreach ($message->topic as $topic) {
+            $this->getTopic($topic)->publish($message);
+        }
+    }
+
+    public function getTopicCount(): int
+    {
+        return count($this->topics);
+    }
+
+    public function getSubscriberCount(): int
+    {
+        return array_sum(array_map(fn($t) => $t->getSubscriberCount(), $this->topics));
+    }
+
+    public function garbageCollect(): void
+    {
+        $this->topics = array_filter(
+            $this->topics,
+            function (Topic $topic) {
+                $topic->garbageCollect();
+                return ($topic->getHistorySize() > 0 && $topic->getSubscriberCount() > 0) || ($topic->getAge() < 60);
+            }
+        );
+    }
+
+}
+