first commit

common/ServerTiming/ServerTiming.php

@@ -0,0 +1,90 @@
+<?php
+
+namespace Common\ServerTiming;
+
+use Symfony\Component\Stopwatch\Stopwatch;
+
+class ServerTiming
+{
+    protected array $finishedEvents = [];
+    protected array $startedEvents = [];
+
+    public function __construct(protected Stopwatch $stopwatch)
+    {
+    }
+
+    public function addMetric(string $metric)
+    {
+        $this->finishedEvents[$metric] = null;
+
+        return $this;
+    }
+
+    public function hasStartedEvent(string $key): bool
+    {
+        return array_key_exists($key, $this->startedEvents);
+    }
+
+    public function measure(string $key): static
+    {
+        if (!$this->hasStartedEvent($key)) {
+            return $this->start($key);
+        }
+
+        return $this->stop($key);
+    }
+
+    public function start(string $key): static
+    {
+        $this->stopwatch->start($key);
+
+        $this->startedEvents[$key] = true;
+
+        return $this;
+    }
+
+    public function stop(string $key): static
+    {
+        if ($this->stopwatch->isStarted($key)) {
+            $event = $this->stopwatch->stop($key);
+
+            $this->setDuration($key, $event->getDuration());
+
+            unset($this->startedEvents[$key]);
+        }
+
+        return $this;
+    }
+
+    public function stopAllUnfinishedEvents(): void
+    {
+        foreach (array_keys($this->startedEvents) as $startedEventName) {
+            $this->stop($startedEventName);
+        }
+    }
+
+    public function setDuration(string $key, $duration): static
+    {
+        if (is_callable($duration)) {
+            $this->start($key);
+
+            call_user_func($duration);
+
+            $this->stop($key);
+        } else {
+            $this->finishedEvents[$key] = $duration;
+        }
+
+        return $this;
+    }
+
+    public function getDuration(string $key)
+    {
+        return $this->finishedEvents[$key] ?? null;
+    }
+
+    public function events(): array
+    {
+        return $this->finishedEvents;
+    }
+}