code: /*
   * Copyright © 2014-2017 EntIT Software LLC, a Micro Focus company (L.P.)
   *
   * 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 io.cloudslang.worker.monitor.metrics;
  
  import io.cloudslang.worker.management.services.WorkerManager;
  import io.cloudslang.worker.monitor.metric.WorkerPerfMetric;
  import io.cloudslang.worker.monitor.service.WorkerPerformanceMetric;
  import org.apache.commons.lang3.tuple.Pair;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.annotation.Qualifier;
  import oshi.software.os.OSProcess;
  
  import java.io.Serializable;
  
  import static io.cloudslang.worker.monitor.service.WorkerPerformanceMetric.THREAD_UTILIZATION;
  
  public class WorkerThreadUtilization implements WorkerPerfMetric {
  
      @Autowired
      private WorkerManager workerManager;
  
      @Autowired
      @Qualifier("numberOfExecutionThreads")
      private int numberOfThreads;
  
      @Override
      public Pair<WorkerPerformanceMetric, Serializable> measure(OSProcess crtProcess, OSProcess oldProcess) {
          return Pair.of(THREAD_UTILIZATION, getCurrentValue());
      }
  
      public int getCurrentValue() {
          return ((workerManager.getRunningTasksCount() * 100) / numberOfThreads);
      }
  }
  