kubernetes/pkg/controller/replication/replication_controller_utils.go
Anthony Yeh 2c7ef5ad4f
Deduplicate RC/RS controller code.
The code was already 99% similar between RC and RS.
This is a wild idea to try to deduplicate the two controllers
in a type-safe manner without adding tons of boilerplate,
and without using code generation.

They are still separate resources. This is a refactor that isn't
intended to change any behavior.
2017-11-07 14:48:32 -08:00

74 lines
2.8 KiB
Go

/*
Copyright 2015 The Kubernetes Authors.
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.
*/
// If you make changes to this file, you should also make the corresponding change in ReplicaSet.
package replication
import (
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// NewReplicationControllerCondition creates a new replication controller condition.
func NewReplicationControllerCondition(condType v1.ReplicationControllerConditionType, status v1.ConditionStatus, reason, msg string) v1.ReplicationControllerCondition {
return v1.ReplicationControllerCondition{
Type: condType,
Status: status,
LastTransitionTime: metav1.Now(),
Reason: reason,
Message: msg,
}
}
// GetCondition returns a replication controller condition with the provided type if it exists.
func GetCondition(status v1.ReplicationControllerStatus, condType v1.ReplicationControllerConditionType) *v1.ReplicationControllerCondition {
for i := range status.Conditions {
c := status.Conditions[i]
if c.Type == condType {
return &c
}
}
return nil
}
// SetCondition adds/replaces the given condition in the replication controller status.
func SetCondition(status *v1.ReplicationControllerStatus, condition v1.ReplicationControllerCondition) {
currentCond := GetCondition(*status, condition.Type)
if currentCond != nil && currentCond.Status == condition.Status && currentCond.Reason == condition.Reason {
return
}
newConditions := filterOutCondition(status.Conditions, condition.Type)
status.Conditions = append(newConditions, condition)
}
// RemoveCondition removes the condition with the provided type from the replication controller status.
func RemoveCondition(status *v1.ReplicationControllerStatus, condType v1.ReplicationControllerConditionType) {
status.Conditions = filterOutCondition(status.Conditions, condType)
}
// filterOutCondition returns a new slice of replication controller conditions without conditions with the provided type.
func filterOutCondition(conditions []v1.ReplicationControllerCondition, condType v1.ReplicationControllerConditionType) []v1.ReplicationControllerCondition {
var newConditions []v1.ReplicationControllerCondition
for _, c := range conditions {
if c.Type == condType {
continue
}
newConditions = append(newConditions, c)
}
return newConditions
}