github.com/kubewharf/katalyst-core@v0.5.3/pkg/util/native/container.go (about) 1 /* 2 Copyright 2022 The Katalyst 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 native 18 19 import ( 20 "fmt" 21 "strings" 22 23 v1 "k8s.io/api/core/v1" 24 ) 25 26 const ( 27 defaultDockerContainerIDPrefix = "docker://" 28 defaultContainerdContainerIDPrefix = "containerd://" 29 ) 30 31 const ( 32 ContainerMetricPortName = "metrics" 33 ContainerMetricStorePortName = "store" 34 ) 35 36 // CheckContainerNotRunning returns whether the given container is not-runnin 37 func CheckContainerNotRunning(pod *v1.Pod, containerName string) (bool, error) { 38 cstatus, err := findContainerStatusByName(&pod.Status, containerName) 39 if err != nil { 40 return false, fmt.Errorf("container status not found in pod status, err: %v", err) 41 } 42 43 return containerNotRunning([]v1.ContainerStatus{cstatus}), nil 44 } 45 46 func findContainerStatusByName(status *v1.PodStatus, name string) (v1.ContainerStatus, error) { 47 for _, containerStatus := range append(status.InitContainerStatuses, status.ContainerStatuses...) { 48 if containerStatus.Name == name { 49 return containerStatus, nil 50 } 51 } 52 return v1.ContainerStatus{}, fmt.Errorf("unable to find status for container with name %v in pod status (it may not be running)", name) 53 } 54 55 // containerNotRunning returns whether the given containers are all not-running, ie. 56 // if anyone falls to not-running state, returns false 57 func containerNotRunning(statuses []v1.ContainerStatus) bool { 58 for _, status := range statuses { 59 if status.State.Terminated == nil && status.State.Waiting == nil { 60 return false 61 } 62 } 63 return true 64 } 65 66 // TrimContainerIDPrefix is used to parse the specific containerID 67 // out of the whole containerID info 68 func TrimContainerIDPrefix(id string) string { 69 return strings.TrimPrefix(strings.TrimPrefix(id, defaultDockerContainerIDPrefix), defaultContainerdContainerIDPrefix) 70 } 71 72 // ParseHostPortsForContainer gets host port from container spec 73 func ParseHostPortsForContainer(container *v1.Container, portName string) (int32, bool) { 74 for _, port := range container.Ports { 75 if port.Name == portName && port.HostPort > 0 { 76 return port.HostPort, true 77 } 78 } 79 return 0, false 80 }