1 files changed, 77 insertions, 0 deletions
diff --git a/vendor/open-telemetry/api/Instrumentation/ConfigurationResolver.php b/vendor/open-telemetry/api/Instrumentation/ConfigurationResolver.php
new file mode 100644
index 000000000..bb5619c30
--- /dev/null
+++ b/vendor/open-telemetry/api/Instrumentation/ConfigurationResolver.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\API\Instrumentation;
+
+class ConfigurationResolver implements ConfigurationResolverInterface
+{
+    public function has(string $name): bool
+    {
+        return $this->getVariable($name) !== null;
+    }
+
+    public function getString(string $name): ?string
+    {
+        return $this->getVariable($name);
+    }
+
+    public function getBoolean(string $name): ?bool
+    {
+        $value = $this->getVariable($name);
+        if ($value === null) {
+            return null;
+        }
+
+        return ($value === 'true');
+    }
+
+    public function getInt(string $name): ?int
+    {
+        $value = $this->getVariable($name);
+        if ($value === null) {
+            return null;
+        }
+        if (filter_var($value, FILTER_VALIDATE_INT) === false) {
+            //log warning
+            return null;
+        }
+
+        return (int) $value;
+    }
+
+    public function getList(string $name): array
+    {
+        $value = $this->getVariable($name);
+        if ($value === null) {
+            return [];
+        }
+
+        return explode(',', $value);
+    }
+
+    private function getVariable(string $name): ?string
+    {
+        $value = $_SERVER[$name] ?? null;
+        if ($value !== false && !self::isEmpty($value)) {
+            assert(is_string($value));
+
+            return $value;
+        }
+        $value = getenv($name);
+        if ($value !== false && !self::isEmpty($value)) {
+            return $value;
+        }
+        $value = ini_get($name);
+        if ($value !== false && !self::isEmpty($value)) {
+            return $value;
+        }
+
+        return null;
+    }
+
+    private static function isEmpty($value): bool
+    {
+        return $value === false || $value === null || $value === '';
+    }
+}