github.com/jingruilea/kubeedge@v1.2.0-beta.0.0.20200410162146-4bb8902b3879/edge/pkg/edged/clcm/internal_life_cycle.go (about)

     1  /*
     2  Copyright 2017 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  @CHANGELOG
    17  KubeEdge Authors: To create mini-kubelet for edge deployment scenario,
    18  This file is derived from K8S Kubelet code with reduced set of methods
    19  */
    20  
    21  package clcm
    22  
    23  import (
    24  	"k8s.io/api/core/v1"
    25  	utilfeature "k8s.io/apiserver/pkg/util/feature"
    26  	kubefeatures "k8s.io/kubernetes/pkg/features"
    27  	"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager"
    28  )
    29  
    30  // InternalContainerLifecycle interface.
    31  type InternalContainerLifecycle interface {
    32  	PreStartContainer(pod *v1.Pod, container *v1.Container, containerID string) error
    33  	PreStopContainer(containerID string) error
    34  	PostStopContainer(containerID string) error
    35  }
    36  
    37  // Implements InternalContainerLifecycle interface.
    38  type internalContainerLifecycleImpl struct {
    39  	cpuManager cpumanager.Manager
    40  }
    41  
    42  // Implements PreStartContainer
    43  func (i *internalContainerLifecycleImpl) PreStartContainer(pod *v1.Pod, container *v1.Container, containerID string) error {
    44  	if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.CPUManager) {
    45  		return i.cpuManager.AddContainer(pod, container, containerID)
    46  	}
    47  	return nil
    48  }
    49  
    50  // Implements PreStopContainer
    51  func (i *internalContainerLifecycleImpl) PreStopContainer(containerID string) error {
    52  	if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.CPUManager) {
    53  		return i.cpuManager.RemoveContainer(containerID)
    54  	}
    55  	return nil
    56  }
    57  
    58  // Implements PostStopContainer
    59  func (i *internalContainerLifecycleImpl) PostStopContainer(containerID string) error {
    60  	if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.CPUManager) {
    61  		return i.cpuManager.RemoveContainer(containerID)
    62  	}
    63  	return nil
    64  }