chore: add missing methods

composer.json

@@ -61,7 +61,8 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "allow-plugins": {
-      "php-http/discovery": false
+      "php-http/discovery": false,
+      "tbachert/spi": false
     }
   },
   "extra": {

src/Metrics/CounterAdapter.php

@@ -42,4 +42,9 @@ public function add($amount, iterable $attributes = [], $context = null): void
 
         $counter->incBy($amount, $labelValues);
     }
+
+    public function isEnabled(): bool
+    {
+        return true;
+    }
 }

src/Metrics/HistogramAdapter.php

@@ -41,4 +41,9 @@ public function record($amount, iterable $attributes = [], $context = null): voi
         );
         $histogram->observe($amount, $labelValues);
     }
+
+    public function isEnabled(): bool
+    {
+        return true;
+    }
 }

src/Metrics/Meter.php

@@ -9,6 +9,7 @@
 
 use OpenTelemetry\API\Metrics\AsynchronousInstrument;
 use OpenTelemetry\API\Metrics\CounterInterface;
+use OpenTelemetry\API\Metrics\GaugeInterface;
 use OpenTelemetry\API\Metrics\HistogramInterface;
 use OpenTelemetry\API\Metrics\MeterInterface;
 use OpenTelemetry\API\Metrics\ObservableCallbackInterface;
@@ -79,6 +80,11 @@ public function createHistogram(string $name, string|null $unit = null, string|n
         return new HistogramAdapter($name, $description ?: '', $this->collectorRegistry);
     }
 
+    public function createGauge(string $name, string|null $unit = null, string|null $description = null, array $advisory = []): GaugeInterface
+    {
+        throw new \LogicException(\sprintf('Method %s is not implemented', __METHOD__));
+    }
+
     /**
      * Creates an `ObservableGauge`.
      *

src/Metrics/UpDownCounterAdapter.php

@@ -45,4 +45,9 @@ public function add($amount, iterable $attributes = [], $context = null): void
             $gauge->decBy(abs($amount), $labelValues);
         }
     }
+
+    public function isEnabled(): bool
+    {
+        return true;
+    }
 }