add account balance metric

helium-blockchain-exporter.go

@@ -30,7 +30,7 @@ const (
 var (
 	// lables
 	commonAccountLabels = []string{"account"}
-	commonHotspotLabels = append([]string{"hotspot"}, commonAccountLabels...)
+	commonHotspotLabels = append(commonAccountLabels, "hotspot", "hotspot_name")
 
 	// exporter metrics
 
@@ -138,7 +138,7 @@ var (
 	accountActivity = metricInfo{
 		prometheus.NewDesc(
 			prometheus.BuildFQName(namespace, "account", "activity_total"),
-			"The total of time an activity occurred in an account.",
+			"The total number of time an activity occurred in an account.",
 			append(commonAccountLabels, "type"), nil,
 		),
 		prometheus.CounterValue,
@@ -259,7 +259,16 @@ func (e *Exporter) collectStatsMetrics(ch chan<- prometheus.Metric) {
 
 // collectStatsMetrics collect metrics in the account group from the helium api
 func (e *Exporter) collectAccountMetrics(ch chan<- prometheus.Metric, account string) {
-	fmt.Println(account)
+	accountForAddress, err := heliumapi.GetAccountForAddress(account)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	ch <- prometheus.MustNewConstMetric(
+		accountBalanceHnt.Desc, accountBalanceHnt.Type, float64(accountForAddress.Data.Balance),
+		account,
+	)
 }
 
 // NewExporter returns an initialized Exporter

heliumapi/accounts.go

@@ -0,0 +1,38 @@
+package heliumapi
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type Account struct {
+	Data struct {
+		Address          string `json:"address"`
+		Balance          int    `json:"balance"`
+		Block            int    `json:"block"`
+		DCBalance        int    `json:"dc_balance"`
+		DCNonce          int    `json:"dc_nonce"`
+		SECBalance       int    `json:"sec_balance"`
+		SECNonce         int    `json:"sec_nonce"`
+		SpeculativeNonce int    `json:"speculative_nonce"`
+	} `json:"data"`
+}
+
+func GetAccountForAddress(account string) (*Account, error) {
+	path := "/v1/accounts/" + account
+
+	// query the api
+	respBody, err := getHeliumApi(path, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// unmarshal the response
+	respobject := Account{}
+	err = json.Unmarshal(respBody, &respobject)
+	if err != nil {
+		return nil, fmt.Errorf("failed to unmarshal response from path %v: %v", path, err)
+	}
+
+	return &respobject, nil
+}