From eb213e7a94682c4560a7a76a5d3a552aee535c82 Mon Sep 17 00:00:00 2001
From: VladislavSenkevich <vladislav.senkevich@effective-soft.com>
Date: Wed, 16 Aug 2023 15:53:06 +0300
Subject: [PATCH] GROUNDWORK-2604: fix linter

---
 .../events-connector/eventsConnector.go       | 48 ++++++++++---------
 .../events-connector/helpers/builder.go       |  2 +-
 2 files changed, 27 insertions(+), 23 deletions(-)

diff --git a/connectors/events-connector/eventsConnector.go b/connectors/events-connector/eventsConnector.go
index 4f03771a..1d8a95c8 100644
--- a/connectors/events-connector/eventsConnector.go
+++ b/connectors/events-connector/eventsConnector.go
@@ -34,45 +34,49 @@ func receiver(c *gin.Context) {
 	}
 	log.Debug().Interface("data", data).Msg("receive data")
 
-	host, group, mb, err := helpers.GetMetricBuildersFromPrometheusData(data, helpers.GetExtConfig())
+	results, err := helpers.ParsePrometheusData(data, helpers.GetExtConfig())
 	if err != nil {
 		log.Debug().Err(err).
-			Msg("could not process incomings")
+			Msg("could not parse prometheus data")
 		c.JSON(http.StatusInternalServerError, err.Error())
 		return
 	}
 
-	monitoredServices := make([]transit.MonitoredService, 0, len(mb))
-	for _, m := range mb {
-		service, err := connectors.BuildServiceForMetric(host, m)
+	groups := make([]transit.ResourceGroup, 0)
+	hostToServiceMap := make(map[string][]*transit.MonitoredService)
+	hostToHostGroupMap := make(map[string]string)
+
+	for _, r := range results {
+		service, err := connectors.BuildServiceForMetric(r.HostName, r.MetricBuilder)
 		if err != nil {
-			log.Debug().Err(err).
-				Str("host", host).
-				Msg("could not build service")
 			c.JSON(http.StatusInternalServerError, err.Error())
 		}
 		service.Status = transit.ServiceWarning
-		service.LastPluginOutput = helpers.GetLastPluginOutput(m.Tags)
-		monitoredServices = append(monitoredServices, *service)
+		service.LastPluginOutput = helpers.GetLastPluginOutput(r.MetricBuilder.Tags)
+
+		hostToServiceMap[r.HostName] = append(hostToServiceMap[r.HostName], service)
+		if r.HostGroupName != "" {
+			hostToHostGroupMap[r.HostName] = r.HostGroupName
+		}
 	}
 
-	resource, err := connectors.CreateResource(host, monitoredServices)
-	if err != nil {
-		log.Debug().Err(err).
-			Str("host", host).
-			Msg("could not create resource")
-		c.JSON(http.StatusInternalServerError, err.Error())
-		return
+	monitoredResources := make([]transit.MonitoredResource, 0, len(hostToServiceMap))
+	for h, s := range hostToServiceMap {
+		resource, err := connectors.CreateResource(h, s)
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, err.Error())
+			return
+		}
+		monitoredResources = append(monitoredResources, *resource)
 	}
 
-	groups := make([]transit.ResourceGroup, 0)
-	if group != "" {
-		resourceRef := connectors.CreateResourceRef(host, "", transit.ResourceTypeHost)
-		resourceGroup := connectors.CreateResourceGroup(group, group, transit.HostGroup, []transit.ResourceRef{resourceRef})
+	for h, hg := range hostToHostGroupMap {
+		resourceRef := connectors.CreateResourceRef(h, "", transit.ResourceTypeHost)
+		resourceGroup := connectors.CreateResourceGroup(hg, hg, transit.HostGroup, []transit.ResourceRef{resourceRef})
 		groups = append(groups, resourceGroup)
 	}
 
-	if err = connectors.SendMetrics(c.Request.Context(), []transit.MonitoredResource{*resource}, &groups); err != nil {
+	if err = connectors.SendMetrics(c.Request.Context(), monitoredResources, &groups); err != nil {
 		log.Err(err).
 			Msg("could not send metrics")
 		c.JSON(http.StatusInternalServerError, err.Error())
diff --git a/connectors/events-connector/helpers/builder.go b/connectors/events-connector/helpers/builder.go
index a9c2e283..d0c9610c 100644
--- a/connectors/events-connector/helpers/builder.go
+++ b/connectors/events-connector/helpers/builder.go
@@ -18,7 +18,7 @@ const (
 )
 
 func ParsePrometheusData(data template.Data, cfg *ExtConfig) ([]ParseResult, error) {
-	var results []ParseResult
+	results := make([]ParseResult, 0)
 
 	for _, alert := range data.Alerts {
 		hostName, err := cfg.HostMappings.Apply(alert.Labels)