Added integration support for DataDog APM Tracing

vendor/gopkg.in/DataDog/dd-trace-go.v1/ddtrace/opentracer/option.go

@@ -0,0 +1,24 @@
+package opentracer // import "gopkg.in/DataDog/dd-trace-go.v1/ddtrace/opentracer"
+
+import (
+	"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/ext"
+
+	opentracing "github.com/opentracing/opentracing-go"
+)
+
+// ServiceName can be used with opentracing.StartSpan to set the
+// service name of a span.
+func ServiceName(name string) opentracing.StartSpanOption {
+	return opentracing.Tag{Key: ext.ServiceName, Value: name}
+}
+
+// ResourceName can be used with opentracing.StartSpan to set the
+// resource name of a span.
+func ResourceName(name string) opentracing.StartSpanOption {
+	return opentracing.Tag{Key: ext.ResourceName, Value: name}
+}
+
+// SpanType can be used with opentracing.StartSpan to set the type of a span.
+func SpanType(name string) opentracing.StartSpanOption {
+	return opentracing.Tag{Key: ext.SpanType, Value: name}
+}