sliceutils.go

Documentation: k8s.io/kubernetes/pkg/kubelet/util/sliceutils

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package sliceutils
    18  
    19  import (
    20  	v1 "k8s.io/api/core/v1"
    21  	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
    22  )
    23  
    24  // PodsByCreationTime makes an array of pods sortable by their creation
    25  // timestamps in ascending order.
    26  type PodsByCreationTime []*v1.Pod
    27  
    28  func (s PodsByCreationTime) Len() int {
    29  	return len(s)
    30  }
    31  
    32  func (s PodsByCreationTime) Swap(i, j int) {
    33  	s[i], s[j] = s[j], s[i]
    34  }
    35  
    36  func (s PodsByCreationTime) Less(i, j int) bool {
    37  	return s[i].CreationTimestamp.Before(&s[j].CreationTimestamp)
    38  }
    39  
    40  // ByImageSize makes an array of images sortable by their size in descending
    41  // order.
    42  type ByImageSize []kubecontainer.Image
    43  
    44  func (a ByImageSize) Less(i, j int) bool {
    45  	if a[i].Size == a[j].Size {
    46  		return a[i].ID > a[j].ID
    47  	}
    48  	return a[i].Size > a[j].Size
    49  }
    50  func (a ByImageSize) Len() int      { return len(a) }
    51  func (a ByImageSize) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
    52
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