/
prune.go
113 lines (95 loc) · 3.92 KB
/
prune.go
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package deployments
import (
"time"
"k8s.io/klog"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
appsv1 "github.com/openshift/api/apps/v1"
)
type Pruner interface {
// Prune is responsible for actual removal of deployments identified as candidates
// for pruning based on pruning algorithm.
Prune(deleter DeploymentDeleter) error
}
// DeploymentDeleter knows how to delete deployments from OpenShift.
type DeploymentDeleter interface {
// DeleteDeployment removes the deployment from OpenShift's storage.
DeleteDeployment(deployment *corev1.ReplicationController) error
}
// pruner is an object that knows how to prune a data set
type pruner struct {
resolver Resolver
}
var _ Pruner = &pruner{}
// PrunerOptions contains the fields used to initialize a new Pruner.
type PrunerOptions struct {
// KeepYoungerThan will filter out all objects from prune data set that are younger than the specified time duration.
KeepYoungerThan time.Duration
// Orphans if true will include inactive orphan deployments in candidate prune set.
Orphans bool
// KeepComplete is per DeploymentConfig how many of the most recent deployments should be preserved.
KeepComplete int
// KeepFailed is per DeploymentConfig how many of the most recent failed deployments should be preserved.
KeepFailed int
// DeploymentConfigs is the entire list of deploymentconfigs across all namespaces in the cluster.
DeploymentConfigs []*appsv1.DeploymentConfig
// Deployments is the entire list of deployments across all namespaces in the cluster.
Deployments []*corev1.ReplicationController
}
// NewPruner returns a Pruner over specified data using specified options.
// deploymentConfigs, deployments, opts.KeepYoungerThan, opts.Orphans, opts.KeepComplete, opts.KeepFailed, deploymentPruneFunc
func NewPruner(options PrunerOptions) Pruner {
klog.V(1).Infof("Creating deployment pruner with keepYoungerThan=%v, orphans=%v, keepComplete=%v, keepFailed=%v",
options.KeepYoungerThan, options.Orphans, options.KeepComplete, options.KeepFailed)
filter := &andFilter{
filterPredicates: []FilterPredicate{
FilterDeploymentsPredicate,
FilterZeroReplicaSize,
NewFilterBeforePredicate(options.KeepYoungerThan),
},
}
deployments := filter.Filter(options.Deployments)
dataSet := NewDataSet(options.DeploymentConfigs, deployments)
resolvers := []Resolver{}
if options.Orphans {
inactiveDeploymentStatus := []appsv1.DeploymentStatus{
appsv1.DeploymentStatusComplete,
appsv1.DeploymentStatusFailed,
}
resolvers = append(resolvers, NewOrphanDeploymentResolver(dataSet, inactiveDeploymentStatus))
}
resolvers = append(resolvers, NewPerDeploymentConfigResolver(dataSet, options.KeepComplete, options.KeepFailed))
return &pruner{
resolver: &mergeResolver{resolvers: resolvers},
}
}
// Prune will visit each item in the prunable set and invoke the associated DeploymentDeleter.
func (p *pruner) Prune(deleter DeploymentDeleter) error {
deployments, err := p.resolver.Resolve()
if err != nil {
return err
}
for _, deployment := range deployments {
if err := deleter.DeleteDeployment(deployment); err != nil {
return err
}
}
return nil
}
// deploymentDeleter removes a deployment from OpenShift.
type deploymentDeleter struct {
deployments corev1client.ReplicationControllersGetter
}
var _ DeploymentDeleter = &deploymentDeleter{}
// NewDeploymentDeleter creates a new deploymentDeleter.
func NewDeploymentDeleter(deployments corev1client.ReplicationControllersGetter) DeploymentDeleter {
return &deploymentDeleter{
deployments: deployments,
}
}
func (p *deploymentDeleter) DeleteDeployment(deployment *corev1.ReplicationController) error {
klog.V(4).Infof("Deleting deployment %q", deployment.Name)
policy := metav1.DeletePropagationBackground
return p.deployments.ReplicationControllers(deployment.Namespace).Delete(deployment.Name, &metav1.DeleteOptions{PropagationPolicy: &policy})
}