Add ReportableScope interface for use in pull models

Author: Aleksey Ivanov

scope.go

@@ -120,6 +120,13 @@ func NewTestScope(
 	return newRootScope(ScopeOptions{Prefix: prefix, Tags: tags}, 0)
 }
 
+// NewReportableScope creates a new ReportableScope with a set of options.
+// Must provide either a StatsReporter or a CachedStatsReporter.
+func NewReportableScope(opts ScopeOptions) ReportableScope {
+	s := newRootScope(opts, 0)
+	return s
+}
+
 func newRootScope(opts ScopeOptions, interval time.Duration) *scope {
 	sanitizer := NewNoOpSanitizer()
 	if o := opts.SanitizeOptions; o != nil {
@@ -181,6 +188,10 @@ func newRootScope(opts ScopeOptions, interval time.Duration) *scope {
 	return s
 }
 
+func (s *scope) Report() {
+	s.reportLoopRun()
+}
+
 // report dumps all aggregated stats into the reporter. Should be called automatically by the root scope periodically.
 func (s *scope) report(r StatsReporter) {
 	s.cm.RLock()

types.go

@@ -59,6 +59,14 @@ type Scope interface {
 	Capabilities() Capabilities
 }
 
+// ReportableScope is a wrapper arround Scope with Report method for manual reportig data.
+type ReportableScope interface {
+	Scope
+
+	// Manual report metrics from scope and subscopes to reporter
+	Report()
+}
+
 // Counter is the interface for emitting counter type metrics.
 type Counter interface {
 	// Inc increments the counter by a delta.