/*
    * Licensed under the GPL License. You may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *   https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
    *
    * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
    * WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
    * PURPOSE.
   */
  package psiprobe.beans.stats.collectors;
  
  import javax.inject.Inject;
  
  import org.springframework.beans.factory.annotation.Value;
  
  import psiprobe.beans.RuntimeInfoAccessorBean;
  import psiprobe.model.jmx.RuntimeInformation;
  import psiprobe.tools.TimeExpression;
  
  /**
   * The Class RuntimeStatsCollectorBean.
   */
  public class RuntimeStatsCollectorBean extends AbstractStatsCollectorBean {
  
    /** The runtime info accessor bean. */
    @Inject
    private RuntimeInfoAccessorBean runtimeInfoAccessorBean;
  
    /**
     * Gets the runtime info accessor bean.
     *
     * @return the runtime info accessor bean
     */
    public RuntimeInfoAccessorBean getRuntimeInfoAccessorBean() {
      return runtimeInfoAccessorBean;
    }
  
    /**
     * Sets the runtime info accessor bean.
     *
     * @param runtimeInfoAccessorBean the new runtime info accessor bean
     */
    public void setRuntimeInfoAccessorBean(RuntimeInfoAccessorBean runtimeInfoAccessorBean) {
      this.runtimeInfoAccessorBean = runtimeInfoAccessorBean;
    }
  
    @Override
    public void collect() throws Exception {
      RuntimeInformation ri = runtimeInfoAccessorBean.getRuntimeInformation();
      if (ri != null) {
        long time = System.currentTimeMillis();
        buildAbsoluteStats("os.memory.committed", ri.getCommittedVirtualMemorySize() / 1024, time);
        buildAbsoluteStats("os.memory.physical",
            (ri.getTotalPhysicalMemorySize() - ri.getFreePhysicalMemorySize()) / 1024, time);
        buildAbsoluteStats("os.memory.swap",
            (ri.getTotalSwapSpaceSize() - ri.getFreeSwapSpaceSize()) / 1024, time);
  
        buildAbsoluteStats("os.fd.open", ri.getOpenFileDescriptorCount(), time);
        buildAbsoluteStats("os.fd.max", ri.getMaxFileDescriptorCount(), time);
        // convert from nanoseconds so times use the same units
        long processCpuTimeMs = ri.getProcessCpuTime() / 1000000;
        // divide by the number of processors to reflect shared load (<= 100%)
        buildTimePercentageStats("os.cpu", processCpuTimeMs / ri.getAvailableProcessors(), time);
      }
    }
  
    /**
     * Sets the max series expression.
     *
     * @param period the period
     * @param span the span
     */
    public void setMaxSeries(@Value("${psiprobe.beans.stats.collectors.runtime.period}") long period,
        @Value("${psiprobe.beans.stats.collectors.runtime.span}") long span) {
      super.setMaxSeries((int) TimeExpression.dataPoints(period, span));
    }
  
  }