VOL-3588 Update OFAgent to support new version of protos
Change-Id: Ic3944779f9a600ebcd5d7a916616f473059e311e
diff --git a/vendor/github.com/opentracing/opentracing-go/ext.go b/vendor/github.com/opentracing/opentracing-go/ext.go
new file mode 100644
index 0000000..e11977e
--- /dev/null
+++ b/vendor/github.com/opentracing/opentracing-go/ext.go
@@ -0,0 +1,24 @@
+package opentracing
+
+import (
+ "context"
+)
+
+// TracerContextWithSpanExtension is an extension interface that the
+// implementation of the Tracer interface may want to implement. It
+// allows to have some control over the go context when the
+// ContextWithSpan is invoked.
+//
+// The primary purpose of this extension are adapters from opentracing
+// API to some other tracing API.
+type TracerContextWithSpanExtension interface {
+ // ContextWithSpanHook gets called by the ContextWithSpan
+ // function, when the Tracer implementation also implements
+ // this interface. It allows to put extra information into the
+ // context and make it available to the callers of the
+ // ContextWithSpan.
+ //
+ // This hook is invoked before the ContextWithSpan function
+ // actually puts the span into the context.
+ ContextWithSpanHook(ctx context.Context, span Span) context.Context
+}