java客户端访问ApiServer(kubernetes-client使用)

前言

使用kubernetes-client访问k8s apiserver，直接贴代码了

配置类ApiClientConfig（自己根据需要改）

package com.pdd.transports.config;

import com.yiran.arch.leo.client.ConfigCache;
import io.kubernetes.client.ApiClient;
import io.kubernetes.client.apis.AppsV1Api;
import io.kubernetes.client.apis.CoreV1Api;
import io.kubernetes.client.apis.ExtensionsV1beta1Api;
import io.kubernetes.client.apis.RbacAuthorizationV1Api;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

import java.io.ByteArrayInputStream;
import java.io.InputStream;

/**
 * @author jinhaozhi
 */
@Slf4j
@Configuration
public class ApiClientConfig {

    // 直接使用eden-api的配置
    private static final String CONFIG_KEY = "eden-api.k8s.kube.config";
    private static final String CONFIG_DEBUG_KEY = "eden-api.k8s.debug.switch";

    @Value("${" + CONFIG_KEY + "}")
    private String config;

    @Value("${" + CONFIG_DEBUG_KEY + "}")
    private String debug;

    @Bean
    @Primary
    public ApiClient initK8sApiClient() {
        try {
            InputStream configStream = new ByteArrayInputStream(config.getBytes());
            final ApiClient apiClient = io.kubernetes.client.util.Config.fromConfig(configStream);
            apiClient.setDebugging(Boolean.valueOf(debug));
            io.kubernetes.client.Configuration.setDefaultApiClient(apiClient);
            ConfigCache.getInstance().addChange((key, value) -> {
                if (CONFIG_KEY.equals(key)) {
                    log.warn("[ LEO ] Change k8s config, this change should have no effect.");
                } else if (CONFIG_DEBUG_KEY.equals(key)) {
                    debug = value;
                    apiClient.setDebugging(Boolean.valueOf(value));
                }
            });
            log.info("[ K8s ] Client init success, server: {} ------------------------->", apiClient.getBasePath());
            return apiClient;
        } catch (Exception e) {
            log.error("[ K8s ] Client init failed! -------------------------->", e);
            return null;
        }
    }

    @Bean
    public CoreV1Api coreV1Api(@Autowired ApiClient apiClient) {
        return new CoreV1Api(apiClient);
    }

    @Bean
    public AppsV1Api appsV1Api(@Autowired ApiClient apiClient) {
        return new AppsV1Api(apiClient);
    }

    @Bean
    public RbacAuthorizationV1Api rbacAuthorizationV1Api(@Autowired ApiClient apiClient) {
        return new RbacAuthorizationV1Api(apiClient);
    }

    @Bean
    public ExtensionsV1beta1Api extensionsV1beta1Api(@Autowired ApiClient apiClient) {
        return new ExtensionsV1beta1Api(apiClient);
    }

}

ApiServerResourceListBizService（封装的biz类）

package com.pdd.transports.k8s;

import com.google.gson.Gson;
import io.kubernetes.client.ApiException;
import io.kubernetes.client.apis.AppsV1Api;
import io.kubernetes.client.apis.CoreV1Api;
import io.kubernetes.client.apis.ExtensionsV1beta1Api;
import io.kubernetes.client.models.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/*
 * @Author jinhaozhi
 * @Description //TODO
 * @Date 14:46 2019/11/26
 * @Param
 * @return
 **/

@Service
public class ApiServerResourceListBizService {

    @Autowired
    private CoreV1Api api;

    @Autowired
    private AppsV1Api appsV1Api;

    @Autowired
    private ExtensionsV1beta1Api extensionsV1beta1Api;


    protected String name() {
        return "ApiServerResourceListBizService";
    }

    public  T getApiServerResponse(String namespace, Class t) throws ApiException {
        if (t == V1PodList.class) {
            V1PodList v1PodList = api.listNamespacedPod(namespace, true, null, null, null, null, null, null, null, null);
            return (T) v1PodList;
        } else if (t == V1DeploymentList.class) {
            V1DeploymentList v1DeploymentList = appsV1Api.listNamespacedDeployment(namespace, true, null, null, null, null, null, null, null, null);
            return (T) v1DeploymentList;
        } else if (t == V1beta1IngressList.class) {
            V1beta1IngressList v1beta1IngressList = extensionsV1beta1Api.listNamespacedIngress(namespace, true, null, null, null, null, null, null, null, null);
            return (T) v1beta1IngressList;
        } else if (t == V1ServiceList.class) {
            V1ServiceList v1ServiceList = api.listNamespacedService(namespace, true, null, null, null, null, null, null, null, null);
            return (T) v1ServiceList;
        } else if(t == V1ConfigMapList.class) {
            V1ConfigMapList v1ConfigMapList = api.listNamespacedConfigMap(namespace, true, null, null, null, null, null, null, null, null);
            return (T) v1ConfigMapList;
        } else if(t == V1beta1NetworkPolicyList.class) {
            V1beta1NetworkPolicyList v1beta1NetworkPolicyList = extensionsV1beta1Api.listNamespacedNetworkPolicy(namespace, true, null, null, null, null, null, null, null, null);
            return (T) v1beta1NetworkPolicyList;
        } else if(t == V1NodeList.class) {
            V1NodeList v1NodeList = api.listNode(null,"true",null,null,null,null,null,null,null);
            return (T) v1NodeList;
        } else if(t == V1NamespaceList.class) {
            V1NamespaceList v1NamespaceList = api.listNamespace(null,"true",null,null,null,null,null,null,null );
            return (T) v1NamespaceList;
        }
        return null;
    }

    public  T getApiServerAllResponse(Class t) throws ApiException {
        if (t == V1PodList.class) {
            V1PodList v1PodList = api.listPodForAllNamespaces(null,null,true,null,null,"true",null,null,null);
            return (T) v1PodList;
        } else if(t == V1ServiceList.class) {
            V1ServiceList v1ServiceList = api.listServiceForAllNamespaces(null,null,true,null,null,"true",null,null,null);
            return (T) v1ServiceList;
        } else if(t == V1EndpointsList.class) {
            V1EndpointsList v1EndpointsList = api.listEndpointsForAllNamespaces(null,null,true,null,null,"true",null,null,null);
            return (T) v1EndpointsList;
        } else if(t == V1ConfigMapList.class) {
            V1ConfigMapList v1ConfigMapList = api.listConfigMapForAllNamespaces(null,null,true,null,null,"true",null,null,null);
            return (T) v1ConfigMapList;
        } else if(t == V1DeploymentList.class) {
            V1DeploymentList v1DeploymentList = appsV1Api.listDeploymentForAllNamespaces(null,null,true,null,null,"true",null,null,null);
            return (T) v1DeploymentList;
        } else if(t == V1beta1IngressList.class) {
            V1beta1IngressList v1beta1IngressList = extensionsV1beta1Api.listIngressForAllNamespaces(null,null,true,null,null,"true",null,null,null);
            return (T) v1beta1IngressList;
        } else if(t == V1beta1NetworkPolicyList.class) {
            V1beta1NetworkPolicyList v1beta1NetworkPolicyList = extensionsV1beta1Api.listNetworkPolicyForAllNamespaces(null,null,true,null,null,"true",null,null,null);
            return (T) v1beta1NetworkPolicyList;
        }
        return null;
    }

    public String getApiServerAllNamespaceResponse(String type) {
        try {
            String result = "";
            Gson gson = new Gson();
            switch (type) {
                case "namespace":
                    V1NamespaceList v1NamespaceList = api.listNamespace(null,"true",null,null,null,null,null,null,null );
                    result = gson.toJson(v1NamespaceList);
                    break;
                case "node":
                    V1NodeList v1NodeList = api.listNode(null,"true",null,null,null,null,null,null,null);
                    result = gson.toJson(v1NodeList);
                    break;
                case "pod":
                    V1PodList v1PodList = api.listPodForAllNamespaces(null,null,true,null,null,"true",null,null,null);
                    result = gson.toJson(v1PodList);
                    break;
                case "service":
                    V1ServiceList v1ServiceList = api.listServiceForAllNamespaces(null,null,true,null,null,"true",null,null,null);
                    result = gson.toJson(v1ServiceList);
                    break;
                case "endPoints":
                    V1EndpointsList v1EndpointsList = api.listEndpointsForAllNamespaces(null,null,true,null,null,"true",null,null,null);
                    result = gson.toJson(v1EndpointsList);
                    break;
                case "configMap":
                    V1ConfigMapList v1ConfigMapList = api.listConfigMapForAllNamespaces(null,null,true,null,null,"true",null,null,null);
                    result = gson.toJson(v1ConfigMapList);
                    break;
                case "deployment":
                    V1DeploymentList v1DeploymentList = appsV1Api.listDeploymentForAllNamespaces(null,null,true,null,null,"true",null,null,null);
                    result = gson.toJson(v1DeploymentList);
                    break;
                case "ingress":
                    V1beta1IngressList v1beta1IngressList = extensionsV1beta1Api.listIngressForAllNamespaces(null,null,true,null,null,"true",null,null,null);
                    result = gson.toJson(v1beta1IngressList);
                    break;
                case "networkPolicy":
                    V1beta1NetworkPolicyList v1beta1NetworkPolicyList = extensionsV1beta1Api.listNetworkPolicyForAllNamespaces(null,null,true,null,null,"true",null,null,null);
                    result = gson.toJson(v1beta1NetworkPolicyList);
                    break;
                default:
                    System.out.println("输入参数不正确");
            }
            return result;
        } catch (ApiException e) {
            e.printStackTrace();
        }
        return null;
    }

}