wankai123 commented on a change in pull request #6608: URL: https://github.com/apache/skywalking/pull/6608#discussion_r601023238
########## File path: oap-server/analyzer/meter-analyzer/src/main/java/org/apache/skywalking/oap/meter/analyzer/k8s/K8sInfoRegistry.java ########## @@ -0,0 +1,233 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package org.apache.skywalking.oap.meter.analyzer.k8s; + +import com.google.common.util.concurrent.ThreadFactoryBuilder; +import io.kubernetes.client.informer.ResourceEventHandler; +import io.kubernetes.client.informer.SharedInformerFactory; +import io.kubernetes.client.openapi.Configuration; +import io.kubernetes.client.openapi.apis.CoreV1Api; +import io.kubernetes.client.openapi.models.V1Endpoints; +import io.kubernetes.client.openapi.models.V1EndpointsList; +import io.kubernetes.client.openapi.models.V1ObjectMeta; +import io.kubernetes.client.openapi.models.V1PodList; +import io.kubernetes.client.util.Config; +import io.kubernetes.client.openapi.ApiClient; +import io.kubernetes.client.openapi.models.V1Pod; +import java.util.Arrays; +import java.util.List; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicBoolean; +import lombok.SneakyThrows; +import lombok.extern.slf4j.Slf4j; +import org.apache.skywalking.oap.meter.analyzer.prometheus.rule.Rule; + +import static com.google.common.base.Strings.isNullOrEmpty; +import static java.util.Objects.isNull; +import static java.util.Optional.ofNullable; + +@Slf4j +public class K8sInfoRegistry { + + private final static K8sInfoRegistry INSTANCE = new K8sInfoRegistry(); + private final AtomicBoolean isStarted = new AtomicBoolean(false); + private final List<String> matchedFunc = Arrays.asList(".k8sTagServiceByPodName"); + private final Map<String/* ip */, V1Pod> ipPodMap = new ConcurrentHashMap<>(); + private final Map<String/* ip */, String/* namespace:serviceName */> ipServiceMap = new ConcurrentHashMap<>(); + private final Map<String/* podName */, String /* namespace:serviceName*/> podServiceMap = new ConcurrentHashMap<>(); + private ExecutorService executor; + + public static K8sInfoRegistry getInstance() { + return INSTANCE; + } + + private void init() { + executor = Executors.newCachedThreadPool( + new ThreadFactoryBuilder() + .setNameFormat("K8sInfoRegistry-%d") + .setDaemon(true) + .build() + ); + } + + @SneakyThrows + public void start(Rule rule) { + if (isStarted.compareAndSet(false, true)) { Review comment: changed the initialize logical -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
