code: /*
   * 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.server.receiver.envoy;
  
  import com.google.common.base.Strings;
  
  import java.io.IOException;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import java.util.stream.Collectors;
  import lombok.Getter;
  import org.apache.skywalking.oap.meter.analyzer.prometheus.rule.Rule;
  import org.apache.skywalking.oap.meter.analyzer.prometheus.rule.Rules;
  import org.apache.skywalking.oap.server.library.module.ModuleConfig;
  import org.apache.skywalking.oap.server.library.module.ModuleStartException;
  import org.apache.skywalking.oap.server.receiver.envoy.metrics.adapters.ClusterManagerMetricsAdapter;
  
  public class EnvoyMetricReceiverConfig extends ModuleConfig {
      @Getter
      private boolean acceptMetricsService = false;
      private String alsHTTPAnalysis;
      private String alsTCPAnalysis;
      @Getter
      private String k8sServiceNameRule;
      @Getter
      private String istioServiceNameRule;
  
      private final ServiceMetaInfoFactory serviceMetaInfoFactory = new ServiceMetaInfoFactoryImpl();
      @Getter
      private final ClusterManagerMetricsAdapter clusterManagerMetricsAdapter = new ClusterManagerMetricsAdapter(this);
  
      public List<String> getAlsHTTPAnalysis() {
          if (Strings.isNullOrEmpty(alsHTTPAnalysis)) {
              return Collections.emptyList();
          }
          return Arrays.stream(alsHTTPAnalysis.trim().split(",")).map(String::trim).collect(Collectors.toList());
      }
  
      public List<String> getAlsTCPAnalysis() {
          if (Strings.isNullOrEmpty(alsTCPAnalysis)) {
              return Collections.emptyList();
          }
          return Arrays.stream(alsTCPAnalysis.trim().split(",")).map(String::trim).collect(Collectors.toList());
      }
  
      public List<Rule> rules() throws ModuleStartException {
          try {
              return Rules.loadRules("envoy-metrics-rules", Arrays.asList("envoy", "envoy-svc-relation"));
          } catch (IOException e) {
              throw new ModuleStartException("Failed to load envoy-metrics-rules", e);
          }
      }
  
      public ServiceMetaInfoFactory serviceMetaInfoFactory() {
          return serviceMetaInfoFactory;
      }
  }
  