Added new metric application_buildpack

README.md

@@ -137,6 +137,7 @@ The exporter returns the following `Applications` metrics:
 | *metrics.namespace*_application_instances_running             | Number of running Cloud Foundry Application Instances                                                                    | `environment`, `deployment`, `application_id`, `application_name`, `organization_id`, `organization_name`, `space_id`, `space_name`, `state`                                                |
 | *metrics.namespace*_application_memory_mb                     | Cloud Foundry Application Memory (Mb)                                                                                    | `environment`, `deployment`, `application_id`, `application_name`, `organization_id`, `organization_name`, `space_id`, `space_name`                                                         |
 | *metrics.namespace*_application_disk_quota_mb                 | Cloud Foundry Application Disk Quota (Mb)                                                                                | `environment`, `deployment`, `application_id`, `application_name`, `organization_id`, `organization_name`, `space_id`, `space_name`                                                         |
+| *metrics.namespace*_application_buildpack                     | All the buildpacks used by an Application.                                                                        | `environment`, `deployment`, `application_id`, `application_name`, `buildpack_name`
 | *metrics.namespace*_applications_scrapes_total                | Total number of scrapes for Cloud Foundry Applications                                                                   | `environment`, `deployment`                                                                                                                                                                 |
 | *metrics.namespace*_applications_scrape_errors_total          | Total number of scrape errors of Cloud Foundry Applications                                                              | `environment`, `deployment`                                                                                                                                                                 |
 | *metrics.namespace*_last_applications_scrape_error            | Whether the last scrape of Applications metrics from Cloud Foundry resulted in an error (`1` for error, `0` for success) | `environment`, `deployment`                                                                                                                                                                 |

collectors/applications.go

@@ -1,3 +1,5 @@
+// collectors/applications.go
+
 package collectors
 
 import (
@@ -15,6 +17,7 @@ type ApplicationsCollector struct {
 	environment                                 string
 	deployment                                  string
 	applicationInfoMetric                       *prometheus.GaugeVec
+	applicationBuildpackMetric                  *prometheus.GaugeVec
 	applicationInstancesMetric                  *prometheus.GaugeVec
 	applicationInstancesRunningMetric           *prometheus.GaugeVec
 	applicationMemoryMbMetric                   *prometheus.GaugeVec
@@ -42,6 +45,17 @@ func NewApplicationsCollector(
 		[]string{"application_id", "application_name", "detected_buildpack", "buildpack", "organization_id", "organization_name", "space_id", "space_name", "stack_id", "state"},
 	)
 
+	applicationBuildpackMetric := prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace:   namespace,
+			Subsystem:   "application",
+			Name:        "buildpack",
+			Help:        "Buildpack used by an Application.",
+			ConstLabels: prometheus.Labels{"environment": environment, "deployment": deployment},
+		},
+		[]string{"application_id", "application_name", "buildpack_name"},
+	)
+
 	applicationInstancesMetric := prometheus.NewGaugeVec(
 		prometheus.GaugeOpts{
 			Namespace:   namespace,
@@ -141,6 +155,7 @@ func NewApplicationsCollector(
 		environment:                                 environment,
 		deployment:                                  deployment,
 		applicationInfoMetric:                       applicationInfoMetric,
+		applicationBuildpackMetric:                  applicationBuildpackMetric,
 		applicationInstancesMetric:                  applicationInstancesMetric,
 		applicationInstancesRunningMetric:           applicationInstancesRunningMetric,
 		applicationMemoryMbMetric:                   applicationMemoryMbMetric,
@@ -185,6 +200,7 @@ func (c ApplicationsCollector) Describe(ch chan<- *prometheus.Desc) {
 	c.applicationDiskQuotaMbMetric.Describe(ch)
 	c.applicationsScrapesTotalMetric.Describe(ch)
 	c.applicationsScrapeErrorsTotalMetric.Describe(ch)
+	c.applicationBuildpackMetric.Describe(ch)
 	c.lastApplicationsScrapeErrorMetric.Describe(ch)
 	c.lastApplicationsScrapeTimestampMetric.Describe(ch)
 	c.lastApplicationsScrapeDurationSecondsMetric.Describe(ch)
@@ -242,6 +258,15 @@ func (c ApplicationsCollector) reportApp(application models.Application, objs *m
 		buildpack = appSum.DetectedBuildpack
 	}
 
+	// 3. Use the droplet data for the buildpack metric
+	for _, bp := range application.Lifecycle.Data.Buildpacks {
+		c.applicationBuildpackMetric.WithLabelValues(
+			application.GUID,
+			application.Name,
+			bp,
+		).Set(float64(1))
+	}
+
 	c.applicationInfoMetric.WithLabelValues(
 		application.GUID,
 		application.Name,
@@ -305,6 +330,7 @@ func (c ApplicationsCollector) reportApplicationsMetrics(objs *models.CFObjects,
 	c.applicationInstancesRunningMetric.Reset()
 	c.applicationMemoryMbMetric.Reset()
 	c.applicationDiskQuotaMbMetric.Reset()
+	c.applicationBuildpackMetric.Reset()
 
 	for _, application := range objs.Apps {
 		err := c.reportApp(application, objs)
@@ -320,5 +346,6 @@ func (c ApplicationsCollector) reportApplicationsMetrics(objs *models.CFObjects,
 	c.applicationInstancesRunningMetric.Collect(ch)
 	c.applicationMemoryMbMetric.Collect(ch)
 	c.applicationDiskQuotaMbMetric.Collect(ch)
+	c.applicationBuildpackMetric.Collect(ch)
 	return res
 }

fetcher/fetcher.go

@@ -81,6 +81,7 @@ func (c *Fetcher) workInit() {
 	c.worker.PushIf("service_bindings", c.fetchServiceBindings, filters.ServiceBindings)
 	c.worker.PushIf("users", c.fetchUsers, filters.Events)
 	c.worker.PushIf("events", c.fetchEvents, filters.Events)
+	c.worker.PushIf("application_buildpack", c.fetchApplications, filters.Applications)
 }
 
 func (c *Fetcher) fetch() *models.CFObjects {
@@ -98,7 +99,3 @@ func (c *Fetcher) fetch() *models.CFObjects {
 	result.Error = c.worker.Do(session, result)
 	return result
 }
-
-// Local Variables:
-// ispell-local-dictionary: "american"
-// End: