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.storage.plugin.banyandb.measure;
  
  import com.google.common.collect.ImmutableSet;
  
  import java.io.IOException;
  import java.util.Collections;
  import java.util.List;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  import org.apache.skywalking.banyandb.v1.client.MeasureQuery;
  import org.apache.skywalking.oap.server.core.analysis.manual.process.ServiceLabelRecord;
  import org.apache.skywalking.oap.server.core.storage.profiling.ebpf.IServiceLabelDAO;
  import org.apache.skywalking.oap.server.storage.plugin.banyandb.BanyanDBStorageClient;
  import org.apache.skywalking.oap.server.storage.plugin.banyandb.stream.AbstractBanyanDBDAO;
  
  public class BanyanDBServiceLabelDAO extends AbstractBanyanDBDAO implements IServiceLabelDAO {
      private static final Set<String> TAGS = ImmutableSet.of(ServiceLabelRecord.LABEL, ServiceLabelRecord.SERVICE_ID);
  
      public BanyanDBServiceLabelDAO(final BanyanDBStorageClient client) {
          super(client);
      }
  
      @Override
      public List<String> queryAllLabels(String serviceId) throws IOException {
          return query(ServiceLabelRecord.INDEX_NAME, TAGS,
                  Collections.emptySet(), new QueryBuilder<MeasureQuery>() {
                      @Override
                      protected void apply(final MeasureQuery query) {
                          query.and(eq(ServiceLabelRecord.SERVICE_ID, serviceId));
                      }
                  }).getDataPoints()
                  .stream()
                  .map(point -> (String) point.getTagValue(ServiceLabelRecord.LABEL))
                  .collect(Collectors.toList());
      }
  }
  