Update interface

Author: quyluongthanh

src/Tracing/TracerInterface.php

@@ -2,6 +2,7 @@
 
 namespace Tracing;
 
+use OpenTracing\Span;
 use OpenTracing\SpanContext;
 
 interface TracerInterface {
@@ -77,6 +78,8 @@ public function inject(SpanContext $spanContext, $format, &$carrier);
    */
   public function extract($format, $carrier);
 
+  public function checkThenFlush(bool $limitTagSize, bool $limitLogSize);
+
   /**
    * Allow tracer to send span data to be instrumented.
    *
@@ -98,4 +101,8 @@ public function resume();
 
   public function getTraceId(SpanContext $spanContext);
 
+  public function getSpanDuration(Span $span);
+
+  public function getAllSpanDurations();
+
 }