1 files changed, 68 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Common/Configuration/Resolver/CompositeResolver.php b/vendor/open-telemetry/sdk/Common/Configuration/Resolver/CompositeResolver.php
new file mode 100644
index 000000000..b72400b01
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Common/Configuration/Resolver/CompositeResolver.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Common\Configuration\Resolver;
+
+use OpenTelemetry\SDK\Common\Configuration\Configuration;
+
+/**
+ * @interal
+ */
+class CompositeResolver
+{
+    // @var array<ResolverInterface>
+    private array $resolvers = [];
+
+    public static function instance(): self
+    {
+        static $instance;
+        $instance ??= new self([
+            new PhpIniResolver(),
+            new EnvironmentResolver(),
+        ]);
+
+        return $instance;
+    }
+
+    public function __construct($resolvers)
+    {
+        foreach ($resolvers as $resolver) {
+            $this->addResolver($resolver);
+        }
+    }
+
+    public function addResolver(ResolverInterface $resolver): void
+    {
+        $this->resolvers[] = $resolver;
+    }
+
+    public function getResolvers(): array
+    {
+        return $this->resolvers;
+    }
+
+    public function resolve(string $variableName, $default = '')
+    {
+        foreach ($this->resolvers as $resolver) {
+            if ($resolver->hasVariable($variableName)) {
+                return $resolver->retrieveValue($variableName);
+            }
+        }
+
+        return Configuration::isEmpty($default)
+            ? Configuration::getDefault($variableName)
+            : $default;
+    }
+
+    public function hasVariable(string $variableName): bool
+    {
+        foreach ($this->resolvers as $resolver) {
+            if ($resolver->hasVariable($variableName)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}