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// Package prometheus contains code for injecting apps related metrics | ||
// into the prometheus registry running in the openshift master | ||
package prometheus |
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package prometheus | ||
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||
import ( | ||
"fmt" | ||
"strings" | ||
"time" | ||
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||
"github.com/golang/glog" | ||
"github.com/prometheus/client_golang/prometheus" | ||
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"k8s.io/apimachinery/pkg/labels" | ||
kcorelisters "k8s.io/kubernetes/pkg/client/listers/core/v1" | ||
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"github.com/openshift/origin/pkg/apps/util" | ||
) | ||
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const ( | ||
completeRolloutCount = "complete_rollouts_total" | ||
activeRolloutDurationSeconds = "active_rollouts_duration_seconds" | ||
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availablePhase = "available" | ||
failedPhase = "failed" | ||
cancelledPhase = "cancelled" | ||
) | ||
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var ( | ||
nameToQuery = func(name string) string { | ||
return strings.Join([]string{"openshift_apps", name}, "_") | ||
} | ||
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completeRolloutCountDesc = prometheus.NewDesc( | ||
nameToQuery(completeRolloutCount), | ||
"Counts total complete rollouts", | ||
[]string{"phase"}, nil, | ||
) | ||
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activeRolloutDurationSecondsDesc = prometheus.NewDesc( | ||
nameToQuery(activeRolloutDurationSeconds), | ||
"Counts total active rollouts", | ||
[]string{"namespace", "name", "phase", "generation"}, nil, | ||
) | ||
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apps = appsCollector{} | ||
registered = false | ||
) | ||
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type appsCollector struct { | ||
lister kcorelisters.ReplicationControllerLister | ||
} | ||
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func IntializeMetricsCollector(rcLister kcorelisters.ReplicationControllerLister) { | ||
apps.lister = rcLister | ||
if !registered { | ||
prometheus.MustRegister(&apps) | ||
registered = true | ||
} | ||
glog.V(4).Info("apps metrics registered with prometheus") | ||
} | ||
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func (c *appsCollector) Describe(ch chan<- *prometheus.Desc) { | ||
ch <- completeRolloutCountDesc | ||
ch <- activeRolloutDurationSecondsDesc | ||
} | ||
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// Collect implements the prometheus.Collector interface. | ||
func (c *appsCollector) Collect(ch chan<- prometheus.Metric) { | ||
result, err := c.lister.List(labels.Everything()) | ||
if err != nil { | ||
glog.V(4).Infof("Collecting metrics for apps failed: %v", err) | ||
return | ||
} | ||
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var available, failed, cancelled float64 | ||
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for _, d := range result { | ||
if util.IsTerminatedDeployment(d) { | ||
if util.IsDeploymentCancelled(d) { | ||
cancelled++ | ||
continue | ||
} | ||
if util.IsFailedDeployment(d) { | ||
failed++ | ||
continue | ||
} | ||
if util.IsCompleteDeployment(d) { | ||
available++ | ||
continue | ||
} | ||
} | ||
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// TODO: possible time screw? | ||
durationSeconds := time.Now().Unix() - d.CreationTimestamp.Unix() | ||
ch <- prometheus.MustNewConstMetric(activeRolloutDurationSecondsDesc, prometheus.GaugeValue, float64(durationSeconds), []string{ | ||
d.Namespace, | ||
util.DeploymentConfigNameFor(d), | ||
strings.ToLower(string(util.DeploymentStatusFor(d))), | ||
fmt.Sprintf("%d", d.Status.ObservedGeneration), | ||
}...) | ||
} | ||
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ch <- prometheus.MustNewConstMetric(completeRolloutCountDesc, prometheus.GaugeValue, available, []string{availablePhase}...) | ||
ch <- prometheus.MustNewConstMetric(completeRolloutCountDesc, prometheus.GaugeValue, failed, []string{failedPhase}...) | ||
ch <- prometheus.MustNewConstMetric(completeRolloutCountDesc, prometheus.GaugeValue, cancelled, []string{cancelledPhase}...) | ||
} |