Added metric to track returne results

.gitlab/review-apps-values.yaml

@@ -11,3 +11,7 @@ service:
   commonName: ""
   externalPort: 80
   internalPort: 80
+podAnnotations:
+  prometheus.io/scrape: "true"
+  prometheus.io/path: /metrics
+  prometheus.io/port: "80"  

app/Http/Controllers/MetaGerSearch.php

@@ -122,6 +122,10 @@ class MetaGerSearch extends Controller
             dd($timings);
         }
 
+        \Prometheus\CollectorRegistry::getDefault()
+            ->getOrRegisterCounter('metager', 'result_counter', 'counts total number of returned results')
+            ->incBy(sizeof($metager->getResults()));
+
         return $resultpage;
     }
 
@@ -183,6 +187,7 @@ class MetaGerSearch extends Controller
         ];
         $result["nextSearchLink"] = $metager->nextSearchLink();
 
+        $newResults = 0;
         foreach ($metager->getResults() as $index => $resultTmp) {
             if ($resultTmp->new) {
                 if ($metager->getFokus() !== "bilder") {
@@ -196,9 +201,14 @@ class MetaGerSearch extends Controller
                     $result['newResults'][$index] = $html;
                     $result["imagesearch"] = true;
                 }
+                $newResults++;
             }
         }
 
+        \Prometheus\CollectorRegistry::getDefault()
+            ->getOrRegisterCounter('metager', 'result_counter', 'counts total number of returned results')
+            ->incBy($newResults)
+
         $finished = true;
         foreach ($engines as $engine) {
             if (!$engine->loaded) {

composer.json

@@ -19,7 +19,8 @@
         "mews/captcha": "^2.2",
         "monospice/laravel-redis-sentinel-drivers": "^2.6",
         "predis/predis": "^1.1",
-        "symfony/dom-crawler": "^4.1"
+        "symfony/dom-crawler": "^4.1",
+        "endclothing/prometheus_client_php": "^1.0"
     },
     "require-dev": {
         "beyondcode/laravel-dump-server": "^1.0",

routes/web.php

@@ -234,4 +234,14 @@ Route::group(
                     ->header('Content-Type', 'text/plain');
             });
         });
+
+        Route::get('metrics', function() {
+            $registry = \Prometheus\CollectorRegistry::getDefault();
+
+            $renderer = new RenderTextFormat();
+            $result = $renderer->render($registry->getMetricFamilySamples());
+
+            return response($result, 200)
+                ->header('Content-Type', RenderTextFormat::MIME_TYPE);
+        });
     });