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 com.google.common.base.Strings;
  import java.io.IOException;
  import java.util.Set;
  import org.apache.skywalking.oap.server.core.Const;
  import org.apache.skywalking.oap.server.core.CoreModule;
  import org.apache.skywalking.oap.server.core.UnexpectedException;
  import org.apache.skywalking.oap.server.core.analysis.manual.searchtag.TagType;
  import org.apache.skywalking.oap.server.core.query.TagAutoCompleteQueryService;
  import org.apache.skywalking.oap.server.core.query.TraceQueryService;
  import org.apache.skywalking.oap.server.core.query.input.Duration;
  import org.apache.skywalking.oap.server.core.query.input.TraceQueryCondition;
  import org.apache.skywalking.oap.server.core.query.type.Pagination;
  import org.apache.skywalking.oap.server.core.query.type.QueryOrder;
  import org.apache.skywalking.oap.server.core.query.type.Trace;
  import org.apache.skywalking.oap.server.core.query.type.TraceBrief;
  import org.apache.skywalking.oap.server.core.query.type.TraceState;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  
  import static java.util.Objects.isNull;
  
  public class TraceQuery implements GraphQLQueryResolver {
  
      private final ModuleManager moduleManager;
      private TraceQueryService queryService;
      private TagAutoCompleteQueryService tagQueryService;
  
      public TraceQuery(ModuleManager moduleManager) {
          this.moduleManager = moduleManager;
      }
  
      private TraceQueryService getQueryService() {
          if (queryService == null) {
              this.queryService = moduleManager.find(CoreModule.NAME).provider().getService(TraceQueryService.class);
          }
          return queryService;
      }
  
      private TagAutoCompleteQueryService getTagQueryService() {
          if (tagQueryService == null) {
              this.tagQueryService = moduleManager.find(CoreModule.NAME).provider().getService(TagAutoCompleteQueryService.class);
          }
          return tagQueryService;
      }
  
      public TraceBrief queryBasicTraces(final TraceQueryCondition condition) throws IOException {
          String traceId = Const.EMPTY_STRING;
  
          if (!Strings.isNullOrEmpty(condition.getTraceId())) {
              traceId = condition.getTraceId();
          } else if (isNull(condition.getQueryDuration())) {
              throw new UnexpectedException("The condition must contains either queryDuration or traceId.");
          }
  
          int minDuration = condition.getMinTraceDuration();
          int maxDuration = condition.getMaxTraceDuration();
          String endpointId = condition.getEndpointId();
          TraceState traceState = condition.getTraceState();
          QueryOrder queryOrder = condition.getQueryOrder();
          Pagination pagination = condition.getPaging();
  
          return getQueryService().queryBasicTraces(
              condition.getServiceId(), condition.getServiceInstanceId(), endpointId, traceId, minDuration,
              maxDuration, traceState, queryOrder, pagination, condition.getQueryDuration(), condition.getTags()
          );
      }
  
      public Trace queryTrace(final String traceId) throws IOException {
          return getQueryService().queryTrace(traceId);
      }
  
      public Set<String> queryTraceTagAutocompleteKeys(final Duration queryDuration) throws IOException {
          return getTagQueryService().queryTagAutocompleteKeys(TagType.TRACE, queryDuration);
      }
  
      public Set<String> queryTraceTagAutocompleteValues(final String tagKey, final Duration queryDuration) throws IOException {
          return getTagQueryService().queryTagAutocompleteValues(TagType.TRACE, tagKey, queryDuration);
      }
  }
  