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.Set;
  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.LogQueryService;
  import org.apache.skywalking.oap.server.core.query.TagAutoCompleteQueryService;
  import org.apache.skywalking.oap.server.core.query.enumeration.Order;
  import org.apache.skywalking.oap.server.core.query.input.Duration;
  import org.apache.skywalking.oap.server.core.query.input.LogQueryCondition;
  import org.apache.skywalking.oap.server.core.query.type.Logs;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  import org.apache.skywalking.oap.server.library.util.CollectionUtils;
  import org.apache.skywalking.oap.server.library.util.StringUtil;
  
  import static java.util.Objects.isNull;
  
  public class LogQuery implements GraphQLQueryResolver {
      private final ModuleManager moduleManager;
      private LogQueryService logQueryService;
      private TagAutoCompleteQueryService tagQueryService;
  
      public LogQuery(ModuleManager moduleManager) {
          this.moduleManager = moduleManager;
      }
  
      private LogQueryService getQueryService() {
          if (logQueryService == null) {
              this.logQueryService = moduleManager.find(CoreModule.NAME).provider().getService(LogQueryService.class);
          }
          return logQueryService;
      }
  
      private TagAutoCompleteQueryService getTagQueryService() {
          if (tagQueryService == null) {
              this.tagQueryService = moduleManager.find(CoreModule.NAME).provider().getService(TagAutoCompleteQueryService.class);
          }
          return tagQueryService;
      }
  
      public boolean supportQueryLogsByKeywords() {
          return getQueryService().supportQueryLogsByKeywords();
      }
  
      public Logs queryLogs(LogQueryCondition condition) throws IOException {
          if (isNull(condition.getQueryDuration()) && isNull(condition.getRelatedTrace())) {
              throw new UnexpectedException("The condition must contains either queryDuration or relatedTrace.");
          }
  
          Order queryOrder = isNull(condition.getQueryOrder()) ? Order.DES : condition.getQueryOrder();
          if (CollectionUtils.isNotEmpty(condition.getTags())) {
              condition.getTags().forEach(tag -> {
                  if (tag != null) {
                      if (StringUtil.isNotEmpty(tag.getKey())) {
                          tag.setKey(tag.getKey().trim());
                      }
                      if (StringUtil.isNotEmpty(tag.getValue())) {
                          tag.setValue(tag.getValue().trim());
                      }
                  }
              });
          }
          return getQueryService().queryLogs(
              condition.getServiceId(),
              condition.getServiceInstanceId(),
              condition.getEndpointId(),
              condition.getRelatedTrace(),
              condition.getPaging(),
              queryOrder,
              condition.getQueryDuration(),
              condition.getTags(),
              condition.getKeywordsOfContent(),
              condition.getExcludingKeywordsOfContent()
          );
      }
  
      public Set<String> queryLogTagAutocompleteKeys(final Duration queryDuration) throws IOException {
          return getTagQueryService().queryTagAutocompleteKeys(TagType.LOG, queryDuration);
      }
  
      public Set<String> queryLogTagAutocompleteValues(final String tagKey, final Duration queryDuration) throws IOException {
          return getTagQueryService().queryTagAutocompleteValues(TagType.LOG, tagKey, queryDuration);
      }
  }
  