added range

README.md

@@ -3,7 +3,7 @@ This golang package is used for monitoring [emitter.io](emitter.io) cluster. Thi
 
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-[![Coverage Status](https://coveralls.io/repos/github/emitter-io/stats/badge.svg?branch=master)](https://coveralls.io/github/emitter-io/emitter?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/emitter-io/stats/badge.svg?branch=master)](https://coveralls.io/github/emitter-io/stats?branch=master)
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 ## Installation

monitor.go

@@ -71,8 +71,7 @@ func (m *Monitor) Tag(name, tag string) {
 // Snapshot encodes the metrics into a binary representation
 func (m *Monitor) Snapshot() (out []byte) {
 	var snapshots []Snapshot
-	m.registry.Range(func(k, v interface{}) bool {
-		metric := v.(*Metric)
+	m.Range(func(metric *Metric) bool {
 		snapshots = append(snapshots, *metric.Snapshot())
 		metric.Reset()
 		return true
@@ -85,6 +84,14 @@ func (m *Monitor) Snapshot() (out []byte) {
 	return
 }
 
+// Range ranges over all the metrics in the monitor. The iteration stops if the function
+// returns false, similar to sync.Map
+func (m *Monitor) Range(f func(*Metric) bool) {
+	m.registry.Range(func(k, v interface{}) bool {
+		return f(v.(*Metric))
+	})
+}
+
 // MeasureRuntime captures the runtime metrics, this is a relatively slow process
 // and code is largely inspired by go-metrics.
 func (m *Monitor) MeasureRuntime() {