Update pod.go
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@ -16,31 +16,24 @@ var Pod pod
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type pod struct{}
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// PodsResp 定义列表的返回内容,Items是Pod的元素列表,Total是元素数量
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type PodsResp struct {
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Total int `json:"total"`
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Items []corev1.Pod `json:"items"`
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}
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//声明类型
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type PodsNp struct {
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Namespace string
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PodNum int
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}
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// GetPods 获取Pod列表,支持过滤、排序、分页
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//context.TODD()用于声明一个空的context上下文,用于List方法内设置这个请求的超时(源码),这里是常用用法
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//metav1.ListOptions{}用于过滤List数据,如使用label,field等
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func (p *pod) GetPods(filterName, namespace string, limit, page int) (podsResp *PodsResp, err error) {
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podList, err := K8s.ClientSet.CoreV1().Pods(namespace).List(context.TODO(), metav1.ListOptions{})
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if err != nil {
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//打印日志,排错
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logger.Info("获取Pod列表失败," + err.Error())
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//返回给上一层,最终返回给前端,前端打印出该error
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return nil, errors.New("获取Pod列表失败," + err.Error())
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}
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//实例化dataSelector结构体,组装数据
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selectableData := &dataSelector{
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GenericDataList: p.toCells(podList.Items),
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DataSelect: &DataSelectQuery{
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@ -52,13 +45,11 @@ func (p *pod) GetPods(filterName, namespace string, limit, page int) (podsResp *
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},
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}
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//先过滤
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filtered := selectableData.Filter()
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total := len(filtered.GenericDataList)
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//排序和分页
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data := filtered.Sort().Paginate()
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//将DataCell类型转换成Pod
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pods := p.fromCells(data.GenericDataList)
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return &PodsResp{
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@ -91,7 +82,6 @@ func (p *pod) DeletePod(podName, namespace string) (err error) {
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//更新Pod
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func (p *pod) UpdatePod(namespace, content string) (err error) {
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pod := &corev1.Pod{}
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//将json反序列化为pod类型
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err = json.Unmarshal([]byte(content), pod)
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if err != nil {
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logger.Error("反序列化失败," + err.Error())
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@ -112,7 +102,6 @@ func (p *pod) GetPodContainer(podName, namespace string) (containers []string, e
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if err != nil {
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return nil, err
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}
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//从Pod对象中拿到容器名
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for _, container := range pod.Spec.Containers {
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containers = append(containers, container.Name)
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}
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@ -121,7 +110,6 @@ func (p *pod) GetPodContainer(podName, namespace string) (containers []string, e
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//获取Pod内容器日志
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func (p *pod) GetPodLog(containerName, podName, namespace string) (log string, err error) {
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//设置日志的配置,容器名、获取内容的配置
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lineLimit := int64(config.PodLogTailLine)
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option := &corev1.PodLogOptions{
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Container: containerName,
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@ -129,14 +117,12 @@ func (p *pod) GetPodLog(containerName, podName, namespace string) (log string, e
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}
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//获取request实例
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req := K8s.ClientSet.CoreV1().Pods(namespace).GetLogs(podName, option)
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//发起request请求,返回一个io.ReadCloser类型(等同于response.body)
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podLogs, err := req.Stream(context.TODO())
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if err != nil {
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logger.Error(errors.New("获取PodLogs失败," + err.Error()))
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return "", errors.New("获取PodLogs失败," + err.Error())
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}
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defer podLogs.Close() //处理完关闭
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//将response body写入到缓冲区,目的是为了转成string返回
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buf := new(bytes.Buffer)
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_, err = io.Copy(buf, podLogs)
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if err != nil {
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@ -160,18 +146,15 @@ func (p *pod) GetPodNumPerNp() (podsNps []*PodsNp, err error) {
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if err != nil {
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return nil, err
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}
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//组装数据
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podsNp := &PodsNp{
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Namespace: namespace.Name,
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PodNum: len(podList.Items),
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}
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//添加到podsNps数组中
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podsNps = append(podsNps, podsNp)
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}
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return podsNps, nil
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}
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//类型转换的方法 corev1.Pod -> DataCell, DataCell --> corev1.Pod
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func (p *pod) toCells(pods []corev1.Pod) []DataCell {
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cells := make([]DataCell, len(pods))
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for i := range pods {
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@ -183,7 +166,6 @@ func (p *pod) toCells(pods []corev1.Pod) []DataCell {
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func (p *pod) fromCells(cells []DataCell) []corev1.Pod {
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pods := make([]corev1.Pod, len(cells))
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for i := range cells {
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//cells[i].(podCell)是将DataCell类型转成podCell类型
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pods[i] = corev1.Pod(cells[i].(podCell))
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}
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return pods
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