add cloudwatch internal metrics (#6990)

pkg/api/cloudwatch/cloudwatch.go

@@ -18,6 +18,7 @@ import (
 	"github.com/aws/aws-sdk-go/service/ec2"
 	"github.com/aws/aws-sdk-go/service/sts"
 	"github.com/grafana/grafana/pkg/log"
+	"github.com/grafana/grafana/pkg/metrics"
 	"github.com/grafana/grafana/pkg/middleware"
 	m "github.com/grafana/grafana/pkg/models"
 )
@@ -213,6 +214,7 @@ func handleGetMetricStatistics(req *cwRequest, c *middleware.Context) {
 		c.JsonApiErr(500, "Unable to call AWS API", err)
 		return
 	}
+	metrics.M_Aws_CloudWatch_GetMetricStatistics.Inc(1)
 
 	c.JSON(200, resp)
 }
@@ -239,6 +241,7 @@ func handleListMetrics(req *cwRequest, c *middleware.Context) {
 	var resp cloudwatch.ListMetricsOutput
 	err := svc.ListMetricsPages(params,
 		func(page *cloudwatch.ListMetricsOutput, lastPage bool) bool {
+			metrics.M_Aws_CloudWatch_ListMetrics.Inc(1)
 			metrics, _ := awsutil.ValuesAtPath(page, "Metrics")
 			for _, metric := range metrics {
 				resp.Metrics = append(resp.Metrics, metric.(*cloudwatch.Metric))

pkg/api/cloudwatch/metrics.go

@@ -11,6 +11,7 @@ import (
 	"github.com/aws/aws-sdk-go/aws/awsutil"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/cloudwatch"
+	"github.com/grafana/grafana/pkg/metrics"
 	"github.com/grafana/grafana/pkg/middleware"
 	"github.com/grafana/grafana/pkg/util"
 )
@@ -261,6 +262,7 @@ func getAllMetrics(cwData *datasourceInfo) (cloudwatch.ListMetricsOutput, error)
 	var resp cloudwatch.ListMetricsOutput
 	err := svc.ListMetricsPages(params,
 		func(page *cloudwatch.ListMetricsOutput, lastPage bool) bool {
+			metrics.M_Aws_CloudWatch_ListMetrics.Inc(1)
 			metrics, _ := awsutil.ValuesAtPath(page, "Metrics")
 			for _, metric := range metrics {
 				resp.Metrics = append(resp.Metrics, metric.(*cloudwatch.Metric))

pkg/metrics/metrics.go

@@ -47,6 +47,8 @@ var (
 	M_Alerting_Notification_Sent_PagerDuty Counter
 	M_Alerting_Notification_Sent_Victorops Counter
 	M_Alerting_Notification_Sent_OpsGenie  Counter
+	M_Aws_CloudWatch_GetMetricStatistics   Counter
+	M_Aws_CloudWatch_ListMetrics           Counter
 
 	// Timers
 	M_DataSource_ProxyReq_Timer Timer
@@ -113,6 +115,9 @@ func initMetricVars(settings *MetricSettings) {
 	M_Alerting_Notification_Sent_Victorops = RegCounter("alerting.notifications_sent", "type", "victorops")
 	M_Alerting_Notification_Sent_OpsGenie = RegCounter("alerting.notifications_sent", "type", "opsgenie")
 
+	M_Aws_CloudWatch_GetMetricStatistics = RegCounter("aws.cloudwatch.get_metric_statistics")
+	M_Aws_CloudWatch_ListMetrics = RegCounter("aws.cloudwatch.list_metrics")
+
 	// Timers
 	M_DataSource_ProxyReq_Timer = RegTimer("api.dataproxy.request.all")
 	M_Alerting_Execution_Time = RegTimer("alerting.execution_time")