util.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.
*/

// TODO: merge with pkg/util/node

package node

import (
	"k8s.io/kubernetes/pkg/api/v1"
)

// GetNodeCondition extracts the provided condition from the given status and returns that.
// Returns nil and -1 if the condition is not present, and the index of the located condition.
func GetNodeCondition(status *v1.NodeStatus, conditionType v1.NodeConditionType) (int, *v1.NodeCondition) {
	if status == nil {
		return -1, nil
	}
	for i := range status.Conditions {
		if status.Conditions[i].Type == conditionType {
			return i, &status.Conditions[i]
		}
	}
	return -1, nil
}

// IsNodeReady returns true if a node is ready; false otherwise.
func IsNodeReady(node *v1.Node) bool {
	for _, c := range node.Status.Conditions {
		if c.Type == v1.NodeReady {
			return c.Status == v1.ConditionTrue
		}
	}
	return false
}