Add cluster and bucket replication metrics in metrics-v3 (#19546)

endpoint: /minio/metrics/v3/cluster/replication
metrics:
- average_active_workers
- average_queued_bytes
- average_queued_count
- average_transfer_rate
- current_active_workers
- current_transfer_rate
- last_minute_queued_bytes
- last_minute_queued_count
- max_active_workers
- max_queued_bytes
- max_queued_count
- max_transfer_rate
- recent_backlog_count

endpoint: /minio/metrics/v3/api/bucket/replication
metrics:
- last_hour_failed_bytes
- last_hour_failed_count
- last_minute_failed_bytes
- last_minute_failed_count
- latency_ms
- proxied_delete_tagging_requests_total
- proxied_get_requests_failures
- proxied_get_requests_total
- proxied_get_tagging_requests_failures
- proxied_get_tagging_requests_total
- proxied_head_requests_failures
- proxied_head_requests_total
- proxied_put_tagging_requests_failures
- proxied_put_tagging_requests_total
- sent_bytes
- sent_count
- total_failed_bytes
- total_failed_count
- proxied_delete_tagging_requests_failures

cmd/metrics-v3-types.go

@@ -72,6 +72,8 @@ const (
 	GaugeMT
 	// HistogramMT - represents a histogram metric.
 	HistogramMT
+	// rangeL - represents a range label.
+	rangeL = "range"
 )
 
 func (mt MetricType) String() string {
@@ -225,7 +227,7 @@ func (m *MetricValues) Set(name MetricName, value float64, labels ...string) {
 	}
 
 	if len(labels)/2 != len(validLabels) {
-		panic(fmt.Sprintf("not all labels were given values"))
+		panic("not all labels were given values")
 	}
 
 	v, ok := m.values[name]
@@ -284,6 +286,14 @@ func (m *MetricValues) SetHistogram(name MetricName, hist *prometheus.HistogramV
 	}
 }
 
+// SetHistogramValues - sets values for the given MetricName using the provided map of
+// range to value.
+func SetHistogramValues[V uint64 | int64 | float64](m MetricValues, name MetricName, values map[string]V, labels ...string) {
+	for rng, val := range values {
+		m.Set(name, float64(val), append(labels, rangeL, rng)...)
+	}
+}
+
 // MetricsLoaderFn - represents a function to load metrics from the
 // metricsCache.
 //