fake_pod_container_manager.go

Documentation: k8s.io/kubernetes/pkg/kubelet/cm

     1  /*
     2  Copyright 2021 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 cm
    18  
    19  import (
    20  	"reflect"
    21  	"sync"
    22  
    23  	"k8s.io/api/core/v1"
    24  	"k8s.io/apimachinery/pkg/types"
    25  	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
    26  )
    27  
    28  type FakePodContainerManager struct {
    29  	sync.Mutex
    30  	CalledFunctions []string
    31  	Cgroups         map[types.UID]CgroupName
    32  }
    33  
    34  var _ PodContainerManager = &FakePodContainerManager{}
    35  
    36  func NewFakePodContainerManager() *FakePodContainerManager {
    37  	return &FakePodContainerManager{
    38  		Cgroups: make(map[types.UID]CgroupName),
    39  	}
    40  }
    41  
    42  func (m *FakePodContainerManager) AddPodFromCgroups(pod *kubecontainer.Pod) {
    43  	m.Lock()
    44  	defer m.Unlock()
    45  	m.Cgroups[pod.ID] = []string{pod.Name}
    46  }
    47  
    48  func (m *FakePodContainerManager) Exists(_ *v1.Pod) bool {
    49  	m.Lock()
    50  	defer m.Unlock()
    51  	m.CalledFunctions = append(m.CalledFunctions, "Exists")
    52  	return true
    53  }
    54  
    55  func (m *FakePodContainerManager) EnsureExists(_ *v1.Pod) error {
    56  	m.Lock()
    57  	defer m.Unlock()
    58  	m.CalledFunctions = append(m.CalledFunctions, "EnsureExists")
    59  	return nil
    60  }
    61  
    62  func (m *FakePodContainerManager) GetPodContainerName(_ *v1.Pod) (CgroupName, string) {
    63  	m.Lock()
    64  	defer m.Unlock()
    65  	m.CalledFunctions = append(m.CalledFunctions, "GetPodContainerName")
    66  	return nil, ""
    67  }
    68  
    69  func (m *FakePodContainerManager) Destroy(name CgroupName) error {
    70  	m.Lock()
    71  	defer m.Unlock()
    72  	m.CalledFunctions = append(m.CalledFunctions, "Destroy")
    73  	for key, cgname := range m.Cgroups {
    74  		if reflect.DeepEqual(cgname, name) {
    75  			delete(m.Cgroups, key)
    76  			return nil
    77  		}
    78  	}
    79  	return nil
    80  }
    81  
    82  func (m *FakePodContainerManager) ReduceCPULimits(_ CgroupName) error {
    83  	m.Lock()
    84  	defer m.Unlock()
    85  	m.CalledFunctions = append(m.CalledFunctions, "ReduceCPULimits")
    86  	return nil
    87  }
    88  
    89  func (m *FakePodContainerManager) GetAllPodsFromCgroups() (map[types.UID]CgroupName, error) {
    90  	m.Lock()
    91  	defer m.Unlock()
    92  	m.CalledFunctions = append(m.CalledFunctions, "GetAllPodsFromCgroups")
    93  	// return a copy for the race detector
    94  	grp := make(map[types.UID]CgroupName)
    95  	for key, value := range m.Cgroups {
    96  		grp[key] = value
    97  	}
    98  	return grp, nil
    99  }
   100  
   101  func (m *FakePodContainerManager) IsPodCgroup(cgroupfs string) (bool, types.UID) {
   102  	m.Lock()
   103  	defer m.Unlock()
   104  	m.CalledFunctions = append(m.CalledFunctions, "IsPodCgroup")
   105  	return false, types.UID("")
   106  }
   107  
   108  func (cm *FakePodContainerManager) GetPodCgroupMemoryUsage(_ *v1.Pod) (uint64, error) {
   109  	cm.Lock()
   110  	defer cm.Unlock()
   111  	cm.CalledFunctions = append(cm.CalledFunctions, "GetPodCgroupMemoryUsage")
   112  	return 0, nil
   113  }
   114  
   115  func (cm *FakePodContainerManager) GetPodCgroupConfig(_ *v1.Pod, _ v1.ResourceName) (*ResourceConfig, error) {
   116  	cm.Lock()
   117  	defer cm.Unlock()
   118  	cm.CalledFunctions = append(cm.CalledFunctions, "GetPodCgroupConfig")
   119  	return nil, nil
   120  }
   121  
   122  func (cm *FakePodContainerManager) SetPodCgroupConfig(_ *v1.Pod, _ v1.ResourceName, _ *ResourceConfig) error {
   123  	cm.Lock()
   124  	defer cm.Unlock()
   125  	cm.CalledFunctions = append(cm.CalledFunctions, "SetPodCgroupConfig")
   126  	return nil
   127  }
   128
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