content: /**
   * Licensed 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.aurora.scheduler.thrift.aop;
  
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  import java.util.function.Function;
  
  import org.apache.aurora.gen.Result;
  
  /**
   * Marks a scheduler thrift server method as a target for workload measuring.
   */
  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.METHOD)
  public @interface ThriftWorkload {
  
    /**
     * Translates Thrift server call {@link Result} to an {@literal Integer} that represents the
     * amount of workload generated by the call.
     */
    interface ThriftWorkloadCounter extends Function<Result, Integer> { }
  
    /**
     * Specify the class that will do the thrift load mapping.
     */
    Class<? extends ThriftWorkloadCounter> value() default ThriftWorkloadCounterImpl.class;
  
    class ThriftWorkloadCounterImpl implements ThriftWorkloadCounter {
      @Override
      public Integer apply(Result result) {
        int count = 0;
        if (result.isSetScheduleStatusResult()) {
          count = result.getScheduleStatusResult().getTasksSize();
        } else if (result.isSetGetPendingReasonResult()) {
          count = result.getGetPendingReasonResult().getReasonsSize();
        } else if (result.isSetConfigSummaryResult()) {
          count = result.getConfigSummaryResult().getSummary().getGroupsSize();
        } else if (result.isSetRoleSummaryResult()) {
          count = result.getRoleSummaryResult().getSummariesSize();
        } else if (result.isSetJobSummaryResult()) {
          count = result.getJobSummaryResult().getSummariesSize();
        } else if (result.isSetGetJobsResult()) {
          count = result.getGetJobsResult().getConfigsSize();
        } else if (result.isSetGetJobUpdateSummariesResult()) {
          count = result.getGetJobUpdateSummariesResult().getUpdateSummariesSize();
        } else if (result.isSetGetJobUpdateDetailsResult()) {
          count = result.getGetJobUpdateDetailsResult().getDetailsListSize();
        }
        return count;
      }
    }
  
  }
  