feat(backend): Add span based metrics

src/Controller/EventsController.php

@@ -7,6 +7,7 @@
 use Cake\Controller\Controller;
 use Cake\Http\Response;
 use Sentry\Metrics\MetricsUnit;
+use Sentry\SentrySdk;
 use function Sentry\metrics;
 
 class EventsController extends Controller
@@ -50,6 +51,14 @@ public function index(): Response
             ],
         );
 
+        $span = SentrySdk::getCurrentHub()->getSpan();
+        if ($span !== null) {
+            $span->setData([
+                'gibpotato.potatoes.event_processing_time' => microtime(true) - $startTimestamp,
+                'gibpotato.potatoes.event_size' => mb_strlen(serialize($this->request->getData()), '8bit'),
+            ]);
+        }
+
         return $this->response
             ->withType('json')
             ->withStatus(200);

src/Middleware/SentryMiddleware.php

@@ -73,7 +73,11 @@ public function process(ServerRequestInterface $request, RequestHandlerInterface
 
         SentrySdk::getCurrentHub()->setSpan($transaction);
 
-        $transaction->setHttpStatus($response->getStatusCode());
+        $transaction
+            ->setHttpStatus($response->getStatusCode())
+            ->setData([
+                'gibpotato.gcp.mem_peak_usage' => memory_get_peak_usage(false),
+            ]);
 
         metrics()->distribution(
             key: 'gibpotato.gcp.mem_peak_usage',

src/Middleware/SentryUserMiddleware.php

@@ -7,8 +7,10 @@
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\MiddlewareInterface;
 use Psr\Http\Server\RequestHandlerInterface;
+use Sentry\Metrics\MetricsUnit;
 use Sentry\SentrySdk;
 use Sentry\State\Scope;
+use function Sentry\metrics;
 
 /**
  * SentryUser middleware
@@ -32,6 +34,19 @@ public function process(ServerRequestInterface $request, RequestHandlerInterface
                     'id' => $user->id,
                     'username' => $user->slack_name,
                 ]);
+
+                metrics()->set(
+                    key: 'gibpotato.users.web_ui',
+                    value: $user->id,
+                    unit: MetricsUnit::custom('user_id'),
+                );
+
+                $span = $scope->getSpan();
+                if ($span !== null) {
+                    $span->setData([
+                        'gibpotato.users.web_ui' => $user->id,
+                    ]);
+                }
             });
         }
 

src/Service/AwardService.php

@@ -8,6 +8,7 @@
 use App\Model\Entity\User;
 use Cake\ORM\Locator\LocatorAwareTrait;
 use Sentry\Metrics\MetricsUnit;
+use Sentry\SentrySdk;
 use function Sentry\metrics;
 
 class AwardService
@@ -67,5 +68,12 @@ private function gibToUser(
             value: $event->amount,
             unit: MetricsUnit::custom('potato'),
         );
+
+        $span = SentrySdk::getCurrentHub()->getSpan();
+        if ($span !== null) {
+            $span->setData([
+                'gibpotato.potatoes.given_out' => $event->amount,
+            ]);
+        }
     }
 }

src/Service/QuickWinService.php

@@ -8,6 +8,7 @@
 use App\Model\Entity\User;
 use Cake\ORM\Locator\LocatorAwareTrait;
 use Sentry\Metrics\MetricsUnit;
+use Sentry\SentrySdk;
 use function Sentry\metrics;
 
 class QuickWinService
@@ -48,6 +49,13 @@ public function store(
             unit: MetricsUnit::custom('tags'),
         );
 
+        $span = SentrySdk::getCurrentHub()->getSpan();
+        if ($span !== null) {
+            $span->setData([
+                'gibpotato.message.quick_win' => 1,
+            ]);
+        }
+
         return true;
     }
 }