perf: Class lookup optimization

PROFeNoM · bwoebi · PROFeNoM · commit e44f4e456c07 · 2024-09-16T14:58:18.000+02:00
Co-authored-by: Bob Weinand &lt;bob.weinand@datadoghq.com&gt;
diff --git a/src/DDTrace/OpenTelemetry/Context.php b/src/DDTrace/OpenTelemetry/Context.php
@@ -62,9 +62,9 @@ public static function setStorage(ContextStorageInterface $storage): void
     public static function storage(): ContextStorageInterface
     {
         if (self::$storageClass === '') {
-            self::$storageClass = class_exists('\OpenTelemetry\Context\FiberBoundContextStorageExecutionAwareBC')
-                ? '\OpenTelemetry\Context\FiberBoundContextStorageExecutionAwareBC' // v1.1+
-                : '\OpenTelemetry\Context\ContextStorage';
+            self::$storageClass = class_exists('OpenTelemetry\Context\FiberBoundContextStorageExecutionAwareBC')
+                ? 'OpenTelemetry\Context\FiberBoundContextStorageExecutionAwareBC' // v1.1+
+                : 'OpenTelemetry\Context\ContextStorage';
         }
 
         return self::$storage ??= new self::$storageClass();

Original file line number	Diff line number	Diff line change
`@@ -62,9 +62,9 @@ public static function setStorage(ContextStorageInterface $storage): void`
`62`	`62`	`public static function storage(): ContextStorageInterface`
`63`	`63`	`{`
`64`	`64`	`if (self::$storageClass === '') {`
`65`		`- self::$storageClass = class_exists('\OpenTelemetry\Context\FiberBoundContextStorageExecutionAwareBC')`
`66`		`- ? '\OpenTelemetry\Context\FiberBoundContextStorageExecutionAwareBC' // v1.1+`
`67`		`- : '\OpenTelemetry\Context\ContextStorage';`
	`65`	`+ self::$storageClass = class_exists('OpenTelemetry\Context\FiberBoundContextStorageExecutionAwareBC')`
	`66`	`+ ? 'OpenTelemetry\Context\FiberBoundContextStorageExecutionAwareBC' // v1.1+`
	`67`	`+ : 'OpenTelemetry\Context\ContextStorage';`
`68`	`68`	`}`
`69`	`69`
`70`	`70`	`return self::$storage ??= new self::$storageClass();`