chore: added the cpu utilization metrics

Author: RRashmit

internal/collector/otelcol.tmpl

@@ -7,6 +7,11 @@ receivers:
       {{- if .Receivers.HostMetrics.Scrapers }}
       {{- if .Receivers.HostMetrics.Scrapers.CPU }}
       cpu:
+      {{- if .Receivers.HostMetrics.Scrapers.CPU.Utilization }}
+        metrics:
+          utilization:
+            enabled: true
+      {{- end }}
       {{- end }}
       {{- if .Receivers.HostMetrics.Scrapers.Disk }}
       disk:

internal/collector/settings_test.go

@@ -79,7 +79,9 @@ func TestTemplateWrite(t *testing.T) {
 		CollectionInterval: time.Minute,
 		InitialDelay:       time.Second,
 		Scrapers: &config.HostMetricsScrapers{
-			CPU:        &config.CPUScraper{},
+			CPU: &config.CPUScraper{
+				Utilization: true,
+			},
 			Disk:       &config.DiskScraper{},
 			Filesystem: &config.FilesystemScraper{},
 			Memory:     &config.MemoryScraper{},

internal/config/types.go

@@ -242,7 +242,9 @@ type (
 		Memory     *MemoryScraper     `yaml:"-" mapstructure:"memory"`
 		Network    *NetworkScraper    `yaml:"-" mapstructure:"network"`
 	}
-	CPUScraper        struct{}
+	CPUScraper struct {
+		Utilization bool `yaml:"-" mapstructure:"utilization"`
+	}
 	DiskScraper       struct{}
 	FilesystemScraper struct{}
 	MemoryScraper     struct{}

test/config/collector/test-opentelemetry-collector-agent.yaml

@@ -4,6 +4,9 @@ receivers:
     initial_delay: 1s
     scrapers:
       cpu:
+        metrics:
+          utilization:
+            enabled: true
       disk:
       filesystem:
       memory:

test/mock/collector/nginx-agent.conf

@@ -38,7 +38,9 @@ collector:
       collection_interval: 1m0s
       initial_delay: 1s
       scrapers:
-        cpu: {}
+        cpu:
+          metrics:
+            utilization:
         memory: {}
         disk: {}
         network: {}

test/types/config.go

@@ -95,7 +95,9 @@ func AgentConfig() *config.Config {
 					CollectionInterval: time.Minute,
 					InitialDelay:       time.Second,
 					Scrapers: &config.HostMetricsScrapers{
-						CPU:        &config.CPUScraper{},
+						CPU: &config.CPUScraper{
+							Utilization: true,
+						},
 						Disk:       &config.DiskScraper{},
 						Filesystem: &config.FilesystemScraper{},
 						Memory:     &config.MemoryScraper{},