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.query.graphql.resolver;
  
  import graphql.kickstart.tools.GraphQLQueryResolver;
  import java.io.IOException;
  import java.util.List;
  import java.util.stream.Collectors;
  import org.apache.skywalking.oap.server.core.CoreModule;
  import org.apache.skywalking.oap.server.core.analysis.IDManager;
  import org.apache.skywalking.oap.server.core.analysis.Layer;
  import org.apache.skywalking.oap.server.core.query.MetadataQueryService;
  import org.apache.skywalking.oap.server.core.query.input.Duration;
  import org.apache.skywalking.oap.server.core.query.type.Database;
  import org.apache.skywalking.oap.server.core.query.type.Endpoint;
  import org.apache.skywalking.oap.server.core.query.type.Service;
  import org.apache.skywalking.oap.server.core.query.type.ServiceInstance;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  
  /**
   * @since 9.0.0 This query is replaced by {@link MetadataQueryV2}
   */
  @Deprecated
  public class MetadataQuery implements GraphQLQueryResolver {
  
      private final ModuleManager moduleManager;
      private MetadataQueryService metadataQueryService;
  
      public MetadataQuery(ModuleManager moduleManager) {
          this.moduleManager = moduleManager;
      }
  
      private MetadataQueryService getMetadataQueryService() {
          if (metadataQueryService == null) {
              this.metadataQueryService = moduleManager.find(CoreModule.NAME)
                                                       .provider()
                                                       .getService(MetadataQueryService.class);
          }
          return metadataQueryService;
      }
  
      public List<Service> getAllServices(final Duration duration,
                                          final String group) throws IOException {
          return getMetadataQueryService().listServices(null, group);
      }
  
      public List<Service> getAllBrowserServices(final Duration duration) throws IOException {
          return getMetadataQueryService().listServices(Layer.BROWSER.name(), null);
      }
  
      public List<Service> searchServices(final Duration duration,
                                          final String keyword) throws IOException {
          List<Service> services = getMetadataQueryService().listServices(null, null);
          return services.stream().filter(service -> service.getName().contains(keyword)).collect(Collectors.toList());
      }
  
      public Service searchService(final String serviceCode) throws IOException {
          return getMetadataQueryService().getService(IDManager.ServiceID.buildId(serviceCode, true));
      }
  
      public List<Service> searchBrowserServices(final Duration duration,
                                                 final String keyword) throws IOException {
          List<Service> services = getMetadataQueryService().listServices(Layer.BROWSER.name(), null);
          return services.stream().filter(service -> service.getName().contains(keyword)).collect(Collectors.toList());
      }
  
      public Service searchBrowserService(final String serviceCode) throws IOException {
          return getMetadataQueryService().getService(IDManager.ServiceID.buildId(serviceCode, true));
      }
  
      public List<ServiceInstance> getServiceInstances(final Duration duration,
                                                       final String serviceId) throws IOException {
          return getMetadataQueryService().listInstances(duration, serviceId);
      }
  
      public List<Endpoint> searchEndpoint(final String keyword, final String serviceId,
                                           final int limit) throws IOException {
          return getMetadataQueryService().findEndpoint(keyword, serviceId, limit);
      }
  
      public List<Database> getAllDatabases(final Duration duration) throws IOException {
          final List<Service> serviceList = getMetadataQueryService().listServices(Layer.VIRTUAL_DATABASE.name(), null);
          return serviceList.stream().map(service -> {
              Database database = new Database();
              database.setId(service.getId());
              database.setName(service.getName());
              return database;
          }).distinct().collect(Collectors.toList());
      }
  }
  