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.management.monitor;
  
  import com.google.common.collect.Maps;
  import io.cloudslang.worker.management.services.InBuffer;
  import io.cloudslang.worker.management.services.OutboundBuffer;
  import io.cloudslang.worker.management.services.WorkerManager;
  import io.cloudslang.worker.management.services.WorkerMonitorInfoEnum;
  import org.springframework.beans.factory.annotation.Autowired;
  
  import javax.annotation.PostConstruct;
  import java.io.Serializable;
  import java.util.List;
  import java.util.Map;
  
  public class WorkerMonitorsImpl implements WorkerMonitors {
      private long monitorStartTime;
      @Autowired
      private WorkerManager workerManager;
  
      @Autowired
      private OutboundBuffer outBuffer;
  
      @Autowired
      private InBuffer inBuffer;
  
      @Autowired
      private List<WorkerMonitor> monitors;
  
      @PostConstruct
      public void init() {
          resetMonitor();
      }
  
      @Override
      public synchronized Map<WorkerMonitorInfoEnum, Serializable> getMonitorInfo() {
          try {
              Map<WorkerMonitorInfoEnum, Serializable> monitorInfo = Maps.newHashMap();
  
              Runtime runtime = Runtime.getRuntime();
              monitorInfo.put(WorkerMonitorInfoEnum.TOTAL_MEMORY, runtime.totalMemory());
              monitorInfo.put(WorkerMonitorInfoEnum.FREE_MEMORY, runtime.freeMemory());
              monitorInfo.put(WorkerMonitorInfoEnum.MAX_MEMORY, runtime.maxMemory());
  
              monitorInfo.put(WorkerMonitorInfoEnum.WORKER_ID, workerManager.getWorkerUuid());
  
              monitorInfo.put(WorkerMonitorInfoEnum.EXECUTION_THREADS_AMOUNT, workerManager.getExecutionThreadsCount());
  
              monitorInfo.put(WorkerMonitorInfoEnum.OUTBUFFER_CAPACITY, outBuffer.getCapacity());
  
              monitorInfo.put(WorkerMonitorInfoEnum.INBUFFER_CAPACITY, inBuffer.getCapacity());
  
              for (WorkerMonitor monitor : monitors) {
                  monitor.captureMonitorInfo(monitorInfo);
              }
  
              monitorInfo.put(WorkerMonitorInfoEnum.MONITOR_START_TIME, monitorStartTime);
              monitorInfo.put(WorkerMonitorInfoEnum.MONITOR_END_TIME, System.currentTimeMillis());
  
              return monitorInfo;
          } finally {
              resetMonitor();
          }
      }
  
      private synchronized void resetMonitor() {
          monitorStartTime = System.currentTimeMillis();
      }
  }
  