Merge pull request #49 from mintopia/feature/frankenphp

Blacklist prometheus metrics endpoint from OpenTelemetry traces

Author: mintopia

app/Http/Middleware/MeasureRequest.php

@@ -26,6 +26,17 @@ public function handle(Request $request, Closure $next): Response
         if ($name === null) {
             $name = $request->getRequestUri();
         }
+
+        $blacklist = config('open-telemetry.traces.disabledroutes', []);
+        if (in_array($name, $blacklist)) {
+            return $next($request);
+        }
+
+        $blacklist = config('open-telemetry.traces.disabledpaths', []);
+        if (in_array($request->getRequestUri(), $blacklist)) {
+            return $next($request);
+        }
+
         $trace = $request->header('traceparent');
         $state = $request->header('tracestate');
         $span = OpenTelemetry::startSpan(name: "{$request->getMethod()} {$name}", parentTrace: $trace, parentState: $state);

config/open-telemetry.php

@@ -13,4 +13,11 @@
         'version' => env('OPENTELEMETRY_SERVICE_VERSION', '1.0.0'),
     ],
     'environment' => env('OPENTELEMETRY_ENVIRONMENT', config('app.env')),
+    'traces' => [
+        'disabledroutes' => [
+        ],
+        'disabledpaths' => [
+            '/' . env('PROMETHEUS_PATH', 'prometheus'),
+        ]
+    ],
 ];