forked from kubernetes/kube-state-metrics
/
replicationcontroller.go
161 lines (144 loc) · 5.68 KB
/
replicationcontroller.go
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/*
Copyright 2016 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package collectors
import (
"k8s.io/kube-state-metrics/pkg/metrics"
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/watch"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
)
var (
descReplicationControllerLabelsDefaultLabels = []string{"namespace", "replicationcontroller"}
replicationControllerMetricFamilies = []metrics.FamilyGenerator{
metrics.FamilyGenerator{
Name: "kube_replicationcontroller_created",
Type: metrics.MetricTypeGauge,
Help: "Unix creation timestamp",
GenerateFunc: wrapReplicationControllerFunc(func(r *v1.ReplicationController) metrics.Family {
f := metrics.Family{}
if !r.CreationTimestamp.IsZero() {
f = append(f, &metrics.Metric{
Name: "kube_replicationcontroller_created",
Value: float64(r.CreationTimestamp.Unix()),
})
}
return f
}),
},
metrics.FamilyGenerator{
Name: "kube_replicationcontroller_status_replicas",
Type: metrics.MetricTypeGauge,
Help: "The number of replicas per ReplicationController.",
GenerateFunc: wrapReplicationControllerFunc(func(r *v1.ReplicationController) metrics.Family {
return metrics.Family{&metrics.Metric{
Name: "kube_replicationcontroller_status_replicas",
Value: float64(r.Status.Replicas),
}}
}),
},
metrics.FamilyGenerator{
Name: "kube_replicationcontroller_status_fully_labeled_replicas",
Type: metrics.MetricTypeGauge,
Help: "The number of fully labeled replicas per ReplicationController.",
GenerateFunc: wrapReplicationControllerFunc(func(r *v1.ReplicationController) metrics.Family {
return metrics.Family{&metrics.Metric{
Name: "kube_replicationcontroller_status_fully_labeled_replicas",
Value: float64(r.Status.FullyLabeledReplicas),
}}
}),
},
metrics.FamilyGenerator{
Name: "kube_replicationcontroller_status_ready_replicas",
Type: metrics.MetricTypeGauge,
Help: "The number of ready replicas per ReplicationController.",
GenerateFunc: wrapReplicationControllerFunc(func(r *v1.ReplicationController) metrics.Family {
return metrics.Family{&metrics.Metric{
Name: "kube_replicationcontroller_status_ready_replicas",
Value: float64(r.Status.ReadyReplicas),
}}
}),
},
metrics.FamilyGenerator{
Name: "kube_replicationcontroller_status_available_replicas",
Type: metrics.MetricTypeGauge,
Help: "The number of available replicas per ReplicationController.",
GenerateFunc: wrapReplicationControllerFunc(func(r *v1.ReplicationController) metrics.Family {
return metrics.Family{&metrics.Metric{
Name: "kube_replicationcontroller_status_available_replicas",
Value: float64(r.Status.AvailableReplicas),
}}
}),
},
metrics.FamilyGenerator{
Name: "kube_replicationcontroller_status_observed_generation",
Type: metrics.MetricTypeGauge,
Help: "The generation observed by the ReplicationController controller.",
GenerateFunc: wrapReplicationControllerFunc(func(r *v1.ReplicationController) metrics.Family {
return metrics.Family{&metrics.Metric{
Name: "kube_replicationcontroller_status_observed_generation",
Value: float64(r.Status.ObservedGeneration),
}}
}),
},
metrics.FamilyGenerator{
Name: "kube_replicationcontroller_spec_replicas",
Type: metrics.MetricTypeGauge,
Help: "Number of desired pods for a ReplicationController.",
GenerateFunc: wrapReplicationControllerFunc(func(r *v1.ReplicationController) metrics.Family {
f := metrics.Family{}
if r.Spec.Replicas != nil {
f = append(f, &metrics.Metric{
Name: "kube_replicationcontroller_spec_replicas",
Value: float64(*r.Spec.Replicas),
})
}
return f
}),
},
metrics.FamilyGenerator{
Name: "kube_replicationcontroller_metadata_generation",
Type: metrics.MetricTypeGauge,
Help: "Sequence number representing a specific generation of the desired state.",
GenerateFunc: wrapReplicationControllerFunc(func(r *v1.ReplicationController) metrics.Family {
return metrics.Family{&metrics.Metric{
Name: "kube_replicationcontroller_metadata_generation",
Value: float64(r.ObjectMeta.Generation),
}}
}),
},
}
)
func wrapReplicationControllerFunc(f func(*v1.ReplicationController) metrics.Family) func(interface{}) metrics.Family {
return func(obj interface{}) metrics.Family {
replicationController := obj.(*v1.ReplicationController)
metricFamily := f(replicationController)
for _, m := range metricFamily {
m.LabelKeys = append(descReplicationControllerLabelsDefaultLabels, m.LabelKeys...)
m.LabelValues = append([]string{replicationController.Namespace, replicationController.Name}, m.LabelValues...)
}
return metricFamily
}
}
func createReplicationControllerListWatch(kubeClient clientset.Interface, ns string) cache.ListWatch {
return cache.ListWatch{
ListFunc: func(opts metav1.ListOptions) (runtime.Object, error) {
return kubeClient.CoreV1().ReplicationControllers(ns).List(opts)
},
WatchFunc: func(opts metav1.ListOptions) (watch.Interface, error) {
return kubeClient.CoreV1().ReplicationControllers(ns).Watch(opts)
},
}
}