Add basic node handling

client/metrics.go

@@ -0,0 +1,25 @@
+package client
+
+import (
+	"bytes"
+	"encoding/json"
+
+	"github.com/datarhei/core/v16/http/api"
+)
+
+func (r *restclient) Metrics(query api.MetricsQuery) (api.MetricsResponse, error) {
+	var m api.MetricsResponse
+	var buf bytes.Buffer
+
+	e := json.NewEncoder(&buf)
+	e.Encode(query)
+
+	data, err := r.call("POST", "/metrics", "application/json", &buf)
+	if err != nil {
+		return m, err
+	}
+
+	err = json.Unmarshal(data, &m)
+
+	return m, err
+}