Documentation
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Overview ¶
Package metrics implements common prometheus metric collectors.
For any resource that implements the standard `metav1.Conditions` array in its status, `ConditionStatusCollector` will report metrics on how many objects have been in certain conditions, and for how long.
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
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Functions ¶
This section is empty.
Types ¶
type ConditionStatusCollector ¶
type ConditionStatusCollector[K pause.HasStatusConditions] struct { metrics.BaseStableCollector ObjectCount *metrics.Desc ObjectConditionCount *metrics.Desc ObjectTimeInCondition *metrics.Desc CollectorTime *metrics.Desc CollectorErrors *metrics.Desc // contains filtered or unexported fields }
ConditionStatusCollector reports condition metrics for any type that implements a metav1.Condition list in the status.
func NewConditionStatusCollector ¶
func NewConditionStatusCollector[K pause.HasStatusConditions](namespace string, subsystem string, resourceName string) *ConditionStatusCollector[K]
NewConditionStatusCollector creates a new ConditionStatusCollector, with flags for specifying how to generate the names of the metrics.
Example ¶
package main
import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/component-base/metrics/legacyregistry"
"github.com/authzed/controller-idioms/conditions"
)
type MyObject struct {
metav1.TypeMeta `json:",inline"`
metav1.ObjectMeta `json:"metadata,omitempty"`
// this implements the conditions interface for MyObject, but note that
// this is not supported by kube codegen at the moment (don't try to use
// this in a real controller)
conditions.StatusWithConditions[*MyObjectStatus] `json:"-"`
}
type MyObjectStatus struct {
ObservedGeneration int64 `json:"observedGeneration,omitempty" protobuf:"varint,3,opt,name=observedGeneration"`
conditions.StatusConditions `json:"conditions,omitempty" patchMergeKey:"type" patchStrategy:"merge" protobuf:"bytes,1,rep,name=conditions"`
}
func main() {
databaseMetrics := NewConditionStatusCollector[*MyObject]("my_controller", "owned_objects", "myobjecttype")
// register a listerbuilder for the object with:
// databaseMetrics.AddListerBuilder()
legacyregistry.CustomMustRegister(databaseMetrics)
}
func (*ConditionStatusCollector[K]) AddListerBuilder ¶
func (c *ConditionStatusCollector[K]) AddListerBuilder(lb func() ([]K, error))
func (*ConditionStatusCollector[K]) CollectWithStability ¶
func (c *ConditionStatusCollector[K]) CollectWithStability(ch chan<- metrics.Metric)
func (*ConditionStatusCollector[K]) DescribeWithStability ¶
func (c *ConditionStatusCollector[K]) DescribeWithStability(ch chan<- *metrics.Desc)
Source Files
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